Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — M&T BANK CORP

Accession: 0000036270-26-000054

Filed: 2026-09-28

Period: 2026-09-28

CIK: 0000036270

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — mbt-20260928.htm (Primary)

EX-99.1 (ex991historicalfinancialin.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: mbt-20260928.htm · Sequence: 1

mbt-20260928

FALSE000003627000000362702026-09-282026-09-280000036270us-gaap:CommonStockMember2026-09-282026-09-280000036270mbt:PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesHMember2026-09-282026-09-280000036270mbt:PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesJMember2026-09-282026-09-280000036270mbt:PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesKMember2026-09-282026-09-280000036270mbt:PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesLMember2026-09-282026-09-28

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

___________________________________

FORM 8-K

___________________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (date of earliest event reported): September 28, 2026

___________________________________

M&T BANK CORPORATION

(Exact name of registrant as specified in its charter)

___________________________________

New York

(State or other jurisdiction of incorporation)

1-9861

(Commission File Number)

16-0968385

(I.R.S. Employer Identification Number)

One M&T Plaza, Buffalo, New York

14203

(Address of principal executive offices)

(Zip Code)

Registrant's telephone number, including area code: (716) 635-4000

___________________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instructions A.2. below):

☐

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbols

Name of Each Exchange on Which Registered

Common Stock, $.50 par value

MTB

New York Stock Exchange

Perpetual Fixed-to-Floating Rate

Non-Cumulative Preferred Stock, Series H

MTBPrH

New York Stock Exchange

Perpetual Fixed Rate Non-Cumulative

Preferred Stock, Series J

MTBPrJ

New York Stock Exchange

Perpetual Fixed Rate Non-Cumulative

Preferred Stock, Series K

MTBPrK

New York Stock Exchange

Perpetual Fixed Rate Non-Cumulative

Preferred Stock, Series L

MTBPrL

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company    ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01. Regulation FD Disclosure.

Effective for the third quarter of 2026, M&T Bank Corporation ("M&T") will make certain changes and reclassifications to Other income categories presented in its Consolidated Statement of Income. These changes, a description of which follows, will have no impact on M&T's total Other income, Income before taxes, Net income or earnings per common share.

•Trust and investment services income will be primarily comprised of Trust income and Brokerage services income which were previously reported as separate Other income categories.

•There will be no changes to Mortgage banking revenues.

•Service charges on deposit accounts will exclude debit card interchange revenues.

•Card revenues will be primarily comprised of credit card interchange and merchant discount revenue previously included in Other revenues from operations and debit card interchange revenues previously included in Service charges on deposit accounts.

•Letter of credit and other credit-related fees were previously included in Other revenues from operations.

•Capital markets and advisory revenues will include a former category, Trading account and other non-hedging derivative gains, as well as loan syndication, underwriting and advisory fees previously included in Other revenues from operations.

•There will be no changes to Gain (loss) on bank investment securities.

•Other revenues from operations will continue to include bank owned life insurance revenue, equipment operating lease income, distributions from M&T's investment in Bayview Lending Group LLC ("BLG") and other fees and revenues.

Also effective for the third quarter of 2026, M&T will begin separately presenting loans held for sale from loans held for investment in its Consolidated Balance Sheet and its Average Balance Sheet and Taxable-equivalent Rates disclosures. Accordingly, annualized taxable-equivalent rates for each impacted loan category and certain loan-based credit quality ratios will exclude loans held for sale.

As of September 28, 2026, M&T is providing unaudited supplemental historical financial information that conforms the historical financial statement presentation to the new financial statement presentation.

The information in Item 7.01 of this Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of such section, nor shall it be deemed incorporated by reference in any filing of M&T under the Securities Act of 1933 or the Exchange Act, regardless of any general incorporation language in such filing, unless expressly incorporated by specific reference in such filing.

Item 9.01 - Financial Statements and Exhibits

(d) The following exhibits are being filed herewith:

Exhibit No.

Exhibit Description

99.1

Unaudited Supplemental Historical Financial Information

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

M&T BANK CORPORATION

Date:

September 28, 2026

By:

/s/ Daryl N. Bible

Daryl N. Bible

Senior Executive Vice President

and Chief Financial Officer

EX-99.1

EX-99.1

Filename: ex991historicalfinancialin.htm · Sequence: 2

Document

Exhibit 99.1

Effective for the third quarter of 2026, M&T Bank Corporation will make certain changes and reclassifications to the presentation of its Consolidated Statement of Income, its Consolidated Balance Sheet and its Average Balance Sheet and Taxable-equivalent Rates disclosures. The following unaudited supplemental historical financial information reflects these changes and reclassifications, which have been applied retrospectively to all periods presented. This information is being provided for illustrative purposes only.

Unaudited Supplemental Historical Consolidated Statement of Income Information

Three Months Ended

June 30, March 31, December 31, September 30, June 30, March 31,

(Dollars in millions) 2026 2026 2025 2025 2025 2025

Interest income $ 2,620  $ 2,536  $ 2,637  $ 2,680  $ 2,609  $ 2,560

Interest expense 828  784  858  919  896  865

Net interest income 1,792  1,752  1,779  1,761  1,713  1,695

Provision for credit losses 120  140  125  125  125  130

Net interest income after provision for credit losses 1,672  1,612  1,654  1,636  1,588  1,565

Other income:

Trust and investment services income 235  219  220  217  216  210

Mortgage banking revenues 127  127  155  147  130  118

Service charges on deposit accounts 107  106  105  105  102  100

Card revenues 89  78  87  90  91  76

Letter of credit and credit-related fees 44  42  47  45  44  43

Capital markets and advisory revenues 41  36  31  35  33  21

Gain (loss) on bank investment securities 2  4  1  1  —  —

Other revenues from operations 95  77  50  112  67  43

Total other income 740  689  696  752  683  611

Other expense:

Salaries and employee benefits 826  914  809  833  813  887

Outside data processing and software 154  144  146  138  138  136

Equipment and net occupancy 129  133  134  129  130  132

Professional and other services 89  93  105  81  86  84

FDIC assessments 18  23  (8) 13  22  23

Advertising and marketing 27  21  32  23  25  22

Amortization of core deposit and other intangible assets 7  9  10  10  9  13

Other costs of operations 99  101  151  136  113  118

Total other expense 1,349  1,438  1,379  1,363  1,336  1,415

Income before taxes 1,063  863  971  1,025  935  761

Income taxes 245  199  212  233  219  177

Net income $ 818  $ 664  $ 759  $ 792  $ 716  $ 584

1

Exhibit 99.1

Unaudited Supplemental Historical Consolidated Statement of Income Information

Six Months Ended Nine Months Ended Year Ended

June 30, June 30, September 30,  December 31,  December 31,

(Dollars in millions) 2026 2025 2025 2025 2024

Interest income $ 5,156  $ 5,169  $ 7,849  $ 10,486  $ 11,026

Interest expense 1,612  1,761  2,680  3,538  4,174

Net interest income 3,544  3,408  5,169  6,948  6,852

Provision for credit losses 260  255  380  505  610

Net interest income after provision for credit losses 3,284  3,153  4,789  6,443  6,242

Other income:

Trust and investment services income 454  426  643  863  806

Mortgage banking revenues 254  248  395  550  436

Service charges on deposit accounts 213  202  307  412  375

Card revenues 167  167  257  344  331

Letter of credit and credit-related fees 86  87  132  179  164

Capital markets and advisory revenues 77  54  89  120  84

Gain (loss) on bank investment securities 6  —  1  2  10

Other revenues from operations 172  110  222  272  221

Total other income 1,429  1,294  2,046  2,742  2,427

Other expense:

Salaries and employee benefits 1,740  1,700  2,533  3,342  3,162

Outside data processing and software 298  274  412  558  492

Equipment and net occupancy 262  262  391  525  512

Professional and other services 182  170  251  356  344

FDIC assessments 41  45  58  50  146

Advertising and marketing 48  47  70  102  104

Amortization of core deposit and other intangible assets 16  22  32  42  53

Other costs of operations 200  231  367  518  546

Total other expense 2,787  2,751  4,114  5,493  5,359

Income before taxes 1,926  1,696  2,721  3,692  3,310

Income taxes 444  396  629  841  722

Net income $ 1,482  $ 1,300  $ 2,092  $ 2,851  $ 2,588

2

Exhibit 99.1

Unaudited Supplemental Historical Other Revenues from Operations

Three Months Ended

June 30, March 31, December 31, September 30, June 30, March 31,

(Dollars in millions) 2026 2026 2025 2025 2025 2025

Bank owned life insurance revenue $ 20  $ 18  $ 19  $ 21  $ 17  $ 18

Equipment operating lease income 11  11  11  12  14  11

BLG income 47  33  —  20  —  —

Earnout payment related to 2023 sale of Collective Investment Trust business —  —  —  28  —  —

Gain on sale of out-of-footprint loan portfolio —  —  —  —  15  —

Gain on sale of institutional services subsidiary —  —  —  —  10  —

Other 17  15  20  31  11  14

Total other revenues from operations $ 95  $ 77  $ 50  $ 112  $ 67  $ 43

Six Months Ended Nine Months Ended Year Ended

June 30, June 30, September 30, December 31, December 31,

(Dollars in millions) 2026 2025 2025 2025 2024

Bank owned life insurance revenue $ 38  $ 35  $ 56  $ 75  $ 65

Equipment operating lease income 22  25  37  48  44

BLG income 80  —  20  20  48

Earnout payment related to 2023 sale of Collective Investment Trust business —  —  28  28  —

Gain on sale of out-of-footprint loan portfolio —  15  15  15  —

Gain on sale of institutional services subsidiary —  10  10  10  —

Other 32  25  56  76  64

Total other revenues from operations $ 172  $ 110  $ 222  $ 272  $ 221

3

Exhibit 99.1

Unaudited Supplemental Historical Consolidated Balance Sheet Information

June 30, March 31, December 31, September 30, June 30, March 31, December 31,

(Dollars in millions) 2026 2026 2025 2025 2025 2025 2024

ASSETS

Cash and due from banks $ 1,939  $ 1,903  $ 1,701  $ 1,950  $ 2,128  $ 2,109  $ 1,909

Interest-bearing deposits at banks 15,499  14,445  17,068  16,751  19,297  20,656  18,873

Investment securities 38,374  38,621  36,649  36,864  35,568  35,137  34,051

Loans held for sale 663  861  1,067  629  625  1,140  566

Loans:

Commercial and industrial 65,995  65,216  63,406  61,863  61,642  60,520  61,436

Real estate - commercial 24,233  22,986  23,335  23,768  24,182  24,982  26,454

Real estate - residential 25,128  24,530  24,433  24,335  23,895  23,105  22,955

Consumer 27,174  26,321  26,461  26,379  25,772  24,827  24,170

Total loans

142,530  139,053  137,635  136,345  135,491  133,434  135,015

Allowance for loan losses (2,176) (2,136) (2,116) (2,161) (2,197) (2,200) (2,184)

Net loans 140,354  136,917  135,519  134,184  133,294  131,234  132,831

Goodwill 8,465  8,465  8,465  8,465  8,465  8,465  8,465

Core deposit and other intangible assets 48  55  64  74  84  93  94

Other assets 13,919  13,469  12,977  12,360  12,123  11,487  11,316

Total assets $ 219,261  $ 214,736  $ 213,510  $ 211,277  $ 211,584  $ 210,321  $ 208,105

LIABILITIES AND SHAREHOLDERS' EQUITY

Noninterest-bearing deposits $ 48,295  $ 45,892  $ 46,509  $ 44,994  $ 47,485  $ 49,051  $ 46,020

Interest-bearing deposits 120,590  117,849  120,400  118,432  116,968  116,358  115,075

Total deposits 168,885  163,741  166,909  163,426  164,453  165,409  161,095

Short-term borrowings 4,614  7,851  2,149  2,059  2,071  1,573  1,060

Long-term borrowings 13,568  11,175  10,911  12,928  12,380  10,496  12,605

Accrued interest and other liabilities 4,248  3,997  4,364  4,136  4,155  3,852  4,318

Total liabilities 191,315  186,764  184,333  182,549  183,059  181,330  179,078

Shareholders' equity:

Preferred 2,434  2,434  2,834  2,394  2,394  2,394  2,394

Common 25,512  25,538  26,343  26,334  26,131  26,597  26,633

Total shareholders' equity 27,946  27,972  29,177  28,728  28,525  28,991  29,027

Total liabilities and shareholders' equity $ 219,261  $ 214,736  $ 213,510  $ 211,277  $ 211,584  $ 210,321  $ 208,105

LOAN RATIOS

Allowance for loan losses to total loans 1.53  % 1.54  % 1.54  % 1.59  % 1.62  % 1.65  % 1.62  %

Nonaccrual loans to total loans .85  .89  .91  1.11  1.16  1.15  1.25

4

Exhibit 99.1

In conjunction with the implementation of a new general ledger platform during the second quarter of 2026, the Company modified its methodology for calculating annualized taxable-equivalent rates for certain earning assets and interest-bearing liabilities, including certain average deposit balances. Previously reported amounts have been adjusted to conform to the current presentation.

Unaudited Supplemental Historical Average Balance Sheet and Taxable-equivalent Rates Information

Three Months Ended

June 30, March 31, December 31, September 30, June 30, March 31,

2026 2026 2025 2025 2025 2025

(Dollars in millions) Balance Rate Balance Rate Balance Rate Balance Rate Balance Rate Balance Rate

ASSETS

Interest-bearing deposits at banks $ 15,061  3.72  % $ 16,231  3.71  % $ 17,964  3.98  % $ 17,739  4.43  % $ 19,698  4.47  % $ 19,695  4.48  %

Investment securities 38,728  4.29  37,845  4.22  36,705  4.19  36,559  4.15  35,335  3.80  34,480  3.97

Loans held for sale 777  5.50  1,002  5.39  1,058  5.52  637  5.85  1,096  8.12  505  5.69

Loans:

Commercial and industrial 65,883  6.00  63,622  6.00  62,190  6.22  61,687  6.45  60,991  6.40  61,018  6.36

Real estate - commercial 23,221  6.29  23,025  6.14  23,507  6.32  23,982  6.45  24,473  6.32  25,966  6.26

Real estate - residential 24,827  4.63  24,468  4.54  24,368  4.57  24,122  4.57  23,493  4.50  23,003  4.43

Consumer 26,719  6.46  26,306  6.48  26,477  6.58  26,099  6.60  25,354  6.57  24,352  6.57

Total loans 140,650  5.89  137,421  5.85  136,542  6.01  135,890  6.15  134,311  6.09  134,339  6.05

Other —  —  95  3.49  97  3.40  95  3.45  95  3.47  97  3.47

Total earning assets 195,216  5.40  192,594  5.35  192,366  5.47  190,920  5.60  190,535  5.51  189,116  5.50

Goodwill 8,465  8,465  8,465  8,465  8,465  8,465

Core deposit and other intangible assets 51  59  69  79  89  92

Other assets 12,800  12,710  11,991  11,589  11,172  10,648

Total assets $ 216,532  $ 213,828  $ 212,891  $ 211,053  $ 210,261  $ 208,321

LIABILITIES AND SHAREHOLDERS' EQUITY

Interest-bearing deposits:

Savings and interest-checking deposits $ 105,752  1.81  % $ 106,570  1.84  % $ 107,257  2.04  % $ 104,630  2.23  % $ 103,934  2.24  % $ 101,536  2.20  %

Time deposits 13,808  3.02  13,059  3.02  13,499  3.20  13,890  3.40  14,171  3.48  14,107  3.57

Total interest-bearing deposits 119,560  1.95  119,629  1.97  120,756  2.17  118,520  2.36  118,105  2.39  115,643  2.37

Short-term borrowings 8,016  3.86  5,695  3.86  2,064  4.21  2,844  4.50  3,327  4.49  2,869  4.52

Long-term borrowings 12,778  5.33  11,064  5.41  12,555  5.56  12,789  5.64  10,936  5.70  11,285  5.58

Total interest-bearing liabilities 140,354  2.36  136,388  2.32  135,375  2.52  134,153  2.72  132,368  2.71  129,797  2.70

Noninterest-bearing deposits 43,964  44,547  44,184  44,056  45,153  45,436

Other liabilities 4,275  4,245  4,362  4,261  4,074  4,090

Total liabilities 188,593  185,180  183,921  182,470  181,595  179,323

Shareholders' equity 27,939  28,648  28,970  28,583  28,666  28,998

Total liabilities and shareholders' equity $ 216,532  $ 213,828  $ 212,891  $ 211,053  $ 210,261  $ 208,321

Net interest spread 3.04  3.03  2.95  2.88  2.80  2.80

Contribution of interest-free funds .66  .67  .75  .81  .82  .85

Net interest margin 3.70  % 3.70  % 3.70  % 3.69  % 3.62  % 3.65  %

5

Exhibit 99.1

Unaudited Supplemental Historical Average Balance Sheet and Taxable-equivalent Rates Information

Six Months Ended Nine Months Ended Year Ended

June 30, June 30, September 30, December 31,

2026 2025 2025 2025 2024

(Dollars in millions) Balance Rate Balance Rate Balance Rate Balance Rate Balance Rate

ASSETS

Interest-bearing deposits at banks $ 15,642  3.72  % $ 19,697  4.48  % $ 19,037  4.46  % $ 18,767  4.35  % $ 27,244  5.33  %

Investment securities 38,289  4.25  34,909  3.88  35,466  3.98  35,778  4.03  30,755  3.64

Loans held for sale 888  5.44  805  7.38  750  6.92  828  6.47  637  6.05

Loans:

Commercial and industrial 64,759  6.00  61,004  6.38  61,234  6.41  61,475  6.36  58,821  6.89

Real estate - commercial 23,124  6.21  25,213  6.29  24,796  6.34  24,471  6.34  29,885  6.43

Real estate - residential 24,648  4.59  23,249  4.46  23,543  4.50  23,751  4.52  22,855  4.34

Consumer 26,514  6.47  24,856  6.57  25,275  6.58  25,578  6.58  22,519  6.63

Total loans 139,045  5.87  134,322  6.07  134,848  6.09  135,275  6.07  134,080  6.31

Other 47  —  96  3.47  96  3.46  96  3.45  102  3.42

Total earning assets 193,911  5.38  189,829  5.51  190,197  5.54  190,744  5.52  192,818  5.74

Goodwill 8,465  8,465  8,465  8,465  8,465

Core deposit and other intangible assets 55  90  86  82  120

Other assets 12,755  10,912  11,141  11,354  9,817

Total assets $ 215,186  $ 209,296  $ 209,889  $ 210,645  $ 211,220

LIABILITIES AND SHAREHOLDERS' EQUITY

Interest-bearing deposits:

Savings and interest-checking deposits $ 106,159  1.82  % $ 102,741  2.22  % $ 103,378  2.22  % $ 104,356  2.18  % $ 97,788  2.57  %

Time deposits 13,435  3.02  14,140  3.52  14,056  3.48  13,915  3.41  18,126  4.31

Total interest-bearing deposits 119,594  1.96  116,881  2.38  117,434  2.37  118,271  2.32  115,914  2.84

Short-term borrowings 6,862  3.86  3,100  4.51  3,013  4.50  2,774  4.45  4,440  5.45

Long-term borrowings 11,926  5.37  11,109  5.64  11,675  5.64  11,897  5.61  11,083  5.76

Total interest-bearing liabilities 138,382  2.35  131,090  2.70  132,122  2.71  132,942  2.66  131,437  3.17

Noninterest-bearing deposits 44,254  45,294  44,877  44,702  47,260

Other liabilities 4,259  4,081  4,142  4,197  4,471

Total liabilities 186,895  180,465  181,141  181,841  183,168

Shareholders' equity 28,291  28,831  28,748  28,804  28,052

Total liabilities and shareholders' equity $ 215,186  $ 209,296  $ 209,889  $ 210,645  $ 211,220

Net interest spread 3.03  2.81  2.83  2.86  2.57

Contribution of interest-free funds .67  .83  .82  .81  1.01

Net interest margin 3.70  % 3.64  % 3.65  % 3.67  % 3.58  %

6

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 8

v3.26.3

Cover

Sep. 28, 2026

Document Information [Line Items]

Document Type

8-K

Document Period End Date

Sep. 28, 2026

Entity Registrant Name

M&T BANK CORPORATION

Entity Incorporation, State or Country Code

NY

Entity Tax Identification Number

16-0968385

Entity File Number

1-9861

Entity Address, Postal Zip Code

14203

Entity Address, Address Line One

One M&T Plaza

Entity Address, City or Town

Buffalo

Entity Address, State or Province

NY

Local Phone Number

635-4000

City Area Code

716

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Entity Emerging Growth Company

false

Amendment Flag

false

Entity Central Index Key

0000036270

Common Stock

Document Information [Line Items]

Title of 12(b) Security

Common Stock, $.50 par value

Trading Symbol

MTB

Security Exchange Name

NYSE

Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series H

Document Information [Line Items]

Title of 12(b) Security

Perpetual Fixed-to-Floating RateNon-Cumulative Preferred Stock, Series H

Trading Symbol

MTBPrH

Security Exchange Name

NYSE

Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series J

Document Information [Line Items]

Title of 12(b) Security

Perpetual Fixed Rate Non-CumulativePreferred Stock, Series J

Trading Symbol

MTBPrJ

Security Exchange Name

NYSE

Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series K

Document Information [Line Items]

Title of 12(b) Security

Perpetual Fixed Rate Non-Cumulative Preferred Stock, Series K

Trading Symbol

MTBPrK

Security Exchange Name

NYSE

Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series L

Document Information [Line Items]

Title of 12(b) Security

Perpetual Fixed Rate Non-Cumulative Preferred Stock, Series L

Trading Symbol

MTBPrL

Security Exchange Name

NYSE

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:

dei_DocumentInformationLineItems

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=mbt_PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesHMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=mbt_PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesJMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=mbt_PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesKMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type:

X

- Details

Name:

us-gaap_StatementClassOfStockAxis=mbt_PerpetualFixedToFloatingRateNonCumulativePreferredStockSeriesLMember

Namespace Prefix:

Data Type:

na

Balance Type:

Period Type: