Citizens Financial (CFG) 10-Q 3 Aug 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Jul. 23, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-36636
Entity Registrant Name	CITIZENS FINANCIAL GROUP INC/RI
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	05-0412693
Entity Address, Address Line One	One Citizens Plaza
Entity Address, City or Town	Providence
Entity Address, State or Province	RI
Entity Address, Postal Zip Code	02903
City Area Code	401
Local Phone Number	456-7000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		426,083,147
Entity Central Index Key	0000759944
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common stock, $0.01 par value per share
Trading Symbol	CFG
Security Exchange Name	NYSE
Series D Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of 6.350% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series D
Trading Symbol	CFG PrD
Security Exchange Name	NYSE
Series E Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/40th interest in a share of 5.000% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series E
Trading Symbol	CFG PrE
Security Exchange Name	NYSE

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
ASSETS:
Cash and due from banks		$ 1,035	$ 1,037
Interest-bearing cash and due from banks		11,606	11,696
Interest-bearing deposits in banks		401	306
Debt securities available for sale, at fair value (including $568 and $549 pledged to creditors, respectively)	[1]	24,583	22,942
Debt securities held to maturity (fair value of $2,790 and $3,357 respectively, and including $124 and $144 pledged to creditors, respectively)	[1]	2,711	3,235
Loans held for sale, at fair value		3,616	3,564
Other loans held for sale		82	439
Loans and leases		122,581	123,090
Less: Allowance for loan and lease losses		(1,947)	(2,443)
Net loans and leases		120,634	120,647
Derivative assets		1,655	1,915
Premises and equipment, net		735	759
Bank-owned life insurance		2,268	1,756
Goodwill		7,050	7,050
Other assets		8,728	8,003
TOTAL ASSETS		185,104	183,349
Deposits:
Noninterest-bearing		47,480	43,831
Interest-bearing		103,156	103,333
Total deposits		150,636	147,164
Short-term borrowed funds		62	243
Derivative liabilities		144	128
Deferred taxes, net		720	629
Long-term borrowed funds		6,957	8,346
Other liabilities		3,386	4,166
TOTAL LIABILITIES		161,905	160,676
Contingencies (refer to Note 11)
Preferred stock:
$25.00 par value,100,000,000 shares authorized; 2,050,000 and 2,000,000 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively		2,014	1,965
Common stock:
$0.01 par value, 1,000,000,000 shares authorized; 570,994,369 shares issued and 426,083,143 shares outstanding at March 31, 2021 and 569,876,133 shares issued and 427,209,831 shares outstanding at December 31, 2020		6	6
Additional paid-in capital		18,964	18,940
Retained earnings		7,314	6,445
Treasury stock, at cost, 144,911,226 and 142,666,302 shares at March 31, 2021 and December 31, 2020, respectively		(4,718)	(4,623)
Accumulated other comprehensive income (loss)		(381)	(60)
TOTAL STOCKHOLDERS’ EQUITY		23,199	22,673
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY		$ 185,104	$ 183,349
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
ASSETS:
Securities held-to-maturity, fair value	$ 2,790	$ 3,357
STOCKHOLDERS’ EQUITY:
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, authorized (in shares)	100,000,000	100,000,000
Preferred stock, issued (in shares)	2,050,000	2,000,000
Preferred stock, outstanding (in shares)	2,050,000	2,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, issued (in shares)	570,994,369	569,876,133
Common stock, outstanding (in shares)	426,083,143	427,209,831
Treasury stock (in shares)	144,911,226	142,666,302
Available-for-sale Securities
ASSETS:
Securities, pledged to creditors	$ 568	$ 549
Held-to-maturity Securities
ASSETS:
Securities, pledged to creditors	124	144
Securities held-to-maturity, fair value	$ 2,790	$ 3,357

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
INTEREST INCOME:
Interest and fees on loans and leases	$ 1,058	$ 1,192	$ 2,119	$ 2,494
Interest and fees on loans held for sale, at fair value	24	20	42	35
Interest and fees on other loans held for sale	2	7	8	16
Investment securities	124	130	252	277
Interest-bearing deposits in banks	3	1	6	6
Total interest income	1,211	1,350	2,427	2,828
INTEREST EXPENSE:
Deposits	42	124	92	351
Short-term borrowed funds	0	0	0	1
Long-term borrowed funds	45	66	94	156
Total interest expense	87	190	186	508
Net interest income	1,124	1,160	2,241	2,320
Provision for credit losses	(213)	464	(353)	1,064
Net interest income after provision for credit losses	1,337	696	2,594	1,256
NONINTEREST INCOME:
Mortgage banking fees	85	276	250	435
Service charges and fees	100	84	199	202
Capital markets fees	91	61	172	104
Card fees	64	48	119	104
Trust and investment services fees	60	45	118	98
Letter of credit and loan fees	38	31	76	65
Foreign exchange and interest rate products	28	34	56	58
Securities gains, net	3	3	6	3
Other income	16	8	31	18
Total noninterest income	485	590	1,027	1,087
NONINTEREST EXPENSE:
Salaries and employee benefits	524	513	1,072	1,062
Equipment and software	155	142	307	275
Outside services	137	131	276	266
Occupancy	82	82	170	166
Other operating expense	93	111	184	222
Total noninterest expense	991	979	2,009	1,991
Income before income tax expense	831	307	1,612	352
Income tax expense	183	54	353	65
NET INCOME	648	253	1,259	287
Net income available to common stockholders	$ 616	$ 225	$ 1,204	$ 237
Weighted-average common shares outstanding:
Basic (in Shares)	425,948,706	426,613,053	425,951,197	427,165,737
Diluted (in Shares)	427,561,572	427,566,920	427,668,242	428,292,580
Per common share information:
Basic earnings (in dollars per share)	$ 1.45	$ 0.53	$ 2.83	$ 0.56
Diluted earnings (in Dollars per Share)	$ 1.44	$ 0.53	$ 2.81	$ 0.55

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 648	$ 253	$ 1,259	$ 287
Other comprehensive income (loss):
Net unrealized derivative instruments gains (losses) arising during the periods, net of income taxes of $16, $(3), $9 and $30, respectively	46	(8)	25	88
Reclassification of net derivative (gains) losses included in net income, net of income taxes of $(10), $(11), $(19) and $(12), respectively	(27)	(34)	(52)	(37)
Net unrealized debt securities gains (losses) arising during the periods, net of income taxes of $3, $16, $(97) and $145, respectively	10	49	(297)	449
Reclassification of net debt securities (gains) losses to net income, net of income taxes of $0, $(1), $(1) and $(1), respectively	(3)	(2)	(5)	(2)
Amortization of actuarial loss, net of income taxes of $1, $0, $1 and $1, respectively	4	4	8	7
Total other comprehensive income (loss), net of income taxes	30	9	(321)	505
Total comprehensive income (loss)	$ 678	$ 262	$ 938	$ 792

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net unrealized derivative instrument gains arising during the periods, tax	$ 16	$ (3)	$ 9	$ 30
Reclassification adjustment for net derivative gains included in net income, tax	(10)	(11)	(19)	(12)
Net unrealized debt securities (losses) gains arising during the periods, tax	3	16	(97)	145
Reclassification of net debt securities gains to net income, tax	0	(1)	(1)	(1)
Amortization of actuarial loss, tax	$ 1	$ 0	$ 1	$ 1

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock, at Cost	Accumulated Other Comprehensive Income (Loss)	Cumulative Effect, Period Of Adoption, Adjustment	Cumulative Effect, Period Of Adoption, AdjustmentRetained Earnings
Beginning balance (in shares) at Dec. 31, 2019		2,000,000	433,000,000
Beginning balance at Dec. 31, 2019	$ 22,201	$ 1,570	$ 6	$ 18,891	$ 6,498	$ (4,353)	$ (411)	$ (331)	$ (331)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders	(336)				(336)
Dividends to preferred stockholders	(50)				(50)
Preferred stock issued	395	$ 395
Treasury stock purchased (in shares)			(7,000,000)
Treasury stock purchased	(270)					(270)
Share-based compensation plans (in shares)			1,000,000
Share-based compensation plans	7			7		0
Employee stock purchase plan purchased	10			10
Total comprehensive income:
Net income	287				287
Other comprehensive income (loss)	505						505
Total comprehensive income (loss)	792				287		505
Ending balance (in shares) at Jun. 30, 2020		2,000,000	427,000,000
Ending balance at Jun. 30, 2020	22,418	$ 1,965	$ 6	18,908	6,068	(4,623)	94
Beginning balance (in shares) at Mar. 31, 2020		2,000,000	427,000,000
Beginning balance at Mar. 31, 2020	21,950	$ 1,570	$ 6	18,901	6,011	(4,623)	85
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders	(168)				(168)
Dividends to preferred stockholders	(28)				(28)
Preferred stock issued	395	$ 395
Treasury stock purchased	0
Share-based compensation plans	1			1
Employee stock purchase plan purchased	6			6
Total comprehensive income:
Net income	253				253
Other comprehensive income (loss)	9						9
Total comprehensive income (loss)	262				253		9
Ending balance (in shares) at Jun. 30, 2020		2,000,000	427,000,000
Ending balance at Jun. 30, 2020	22,418	$ 1,965	$ 6	18,908	6,068	(4,623)	94
Beginning balance (in shares) at Dec. 31, 2020		2,000,000	427,000,000
Beginning balance at Dec. 31, 2020	22,673	$ 1,965	$ 6	18,940	6,445	(4,623)	(60)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders	(335)				(335)
Dividends to preferred stockholders	(55)				(55)
Preferred stock issued	296	296
Preferred stock called	$ (247)	$ (247)
Treasury stock purchased (in shares)	(2,244,924)		(2,000,000)
Treasury stock purchased	$ (95)					(95)
Share-based compensation plans (in shares)			1,000,000
Share-based compensation plans	13			13		0
Employee stock purchase plan purchased	11			11
Total comprehensive income:
Net income	1,259				1,259
Other comprehensive income (loss)	(321)						(321)
Total comprehensive income (loss)	938				1,259		(321)
Ending balance (in shares) at Jun. 30, 2021		2,000,000	426,000,000
Ending balance at Jun. 30, 2021	23,199	$ 2,014	$ 6	18,964	7,314	(4,718)	(381)
Beginning balance (in shares) at Mar. 31, 2021		2,000,000	426,000,000
Beginning balance at Mar. 31, 2021	22,653	$ 1,965	$ 6	18,945	6,866	(4,718)	(411)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends to common stockholders	(168)				(168)
Dividends to preferred stockholders	(32)				(32)
Preferred stock issued	296	296
Preferred stock called	(247)	$ (247)
Share-based compensation plans	13			13
Employee stock purchase plan purchased	6			6
Total comprehensive income:
Net income	648				648
Other comprehensive income (loss)	30						30
Total comprehensive income (loss)	678				648		30
Ending balance (in shares) at Jun. 30, 2021		2,000,000	426,000,000
Ending balance at Jun. 30, 2021	$ 23,199	$ 2,014	$ 6	$ 18,964	$ 7,314	$ (4,718)	$ (381)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES
Net income		$ 1,259	$ 287
Adjustments to reconcile net income to net change in cash due to operating activities:
Provision for credit losses		(353)	1,064
Net change in loans held for sale		322	(737)
Depreciation, amortization and accretion		317	316
Deferred income taxes		199	(208)
Share-based compensation		35	23
Debt securities		(6)	(3)
Premises and equipment		(1)	0
Net (increase) decrease in other assets		(2,129)	(2,454)
Net increase (decrease) in other liabilities		247	299
Net change due to operating activities		(110)	(1,413)
Investment securities:
Purchases of debt securities available for sale		(6,413)	(3,308)
Proceeds from maturities and paydowns of debt securities available for sale		4,321	2,521
Proceeds from sales of debt securities available for sale		104	0
Proceeds from maturities and paydowns of debt securities held to maturity		530	349
Net (increase) decrease in interest-bearing deposits in banks		(95)	(178)
Acquisitions, net of cash acquired		0	(3)
Net (increase) decrease in loans and leases		497	(7,014)
Capital expenditures, net		(32)	(53)
Purchase of bank-owned life insurance		(500)	0
Other		(115)	87
Net change due to investing activities		(1,703)	(7,599)
FINANCING ACTIVITIES
Net increase (decrease) in deposits		3,472	18,305
Net increase (decrease) in short-term borrowed funds		(183)	(18)
Proceeds from issuance of long-term borrowed funds		0	8,309
Repayments of long-term borrowed funds		(1,357)	(13,253)
Treasury stock purchased		(95)	(270)
Net proceeds from issuance of preferred stock		296	395
Dividends paid to common stockholders		(335)	(336)
Dividends paid to preferred stockholders		(55)	(45)
Premium paid to exchange subordinated debt		(1)	0
Payments of employee tax withholding for share-based compensation		(21)	(15)
Net change due to financing activities		1,721	13,072
Net change in cash and cash equivalents	[1]	(92)	4,060
Cash and cash equivalents at beginning of period	[1]	12,733	3,386
Cash and cash equivalents at end of period	[1]	$ 12,641	$ 7,446
[1]	Cash and cash equivalents includes cash and due from banks and interest-bearing cash and due from banks as reflected in the Consolidated Balance Sheets.

BASIS OF PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	NOTE 1 - BASIS OF PRESENTATION Basis of Presentation The unaudited interim Consolidated Financial Statements, including the Notes presented in this document of Citizens Financial Group, Inc., have been prepared in accordance with GAAP interim reporting requirements, and therefore do not include all information and Notes included in the audited Consolidated Financial Statements in conformity with GAAP. These unaudited interim Consolidated Financial Statements and Notes presented in this document should be read in conjunction with the Company’s audited Consolidated Financial Statements and accompanying Notes included in the Company’s 2020 Form 10-K. The Company’s principal business activity is banking, conducted through its banking subsidiary, CBNA. The unaudited interim Consolidated Financial Statements include the accounts of the Company and subsidiaries in which the Company has a controlling financial interest. All intercompany transactions and balances have been eliminated. The Company has evaluated its unconsolidated entities and does not believe that any entity in which it has an interest, but does not currently consolidate, meets the requirements to be consolidated as a variable interest entity. The unaudited interim Consolidated Financial Statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for the interim periods. The results for interim periods are not necessarily indicative of results for a full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near-term relate to the determination of the ACL. Significant Accounting Policies For further information regarding the Company’s significant accounting policies, see Note 1 in the Company’s 2020 Form 10-K.

SECURITIES

SECURITIES	6 Months Ended
	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
SECURITIES	NOTE 2 - SECURITIES The following table presents the major components of securities at amortized cost and fair value: June 30, 2021 December 31, 2020 (in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury and other $11 $— $— $11 $11 $— $— $11 State and political subdivisions 3 — — 3 3 — — 3 Mortgage-backed securities, at fair value: Federal agencies and U.S. government sponsored entities 23,960 354 (202) 24,112 21,954 571 (19) 22,506 Other/non-agency 267 13 — 280 396 26 — 422 Total mortgage-backed securities, at fair value 24,227 367 (202) 24,392 22,350 597 (19) 22,928 Collateralized loan obligations, at fair value 177 — — 177 — — — — Total debt securities available for sale, at fair value $24,418 $367 ($202) $24,583 $22,364 $597 ($19) $22,942 Federal agencies and U.S. government sponsored entities $1,887 $77 $— $1,964 $2,342 $122 $— $2,464 Total mortgage-backed securities, at cost 1,887 77 — 1,964 2,342 122 — 2,464 Asset-backed securities, at cost 824 2 — 826 893 — — 893 Total debt securities held to maturity $2,711 $79 $— $2,790 $3,235 $122 $— $3,357 Equity securities, at cost $602 $— $— $602 $604 $— $— $604 Equity securities, at fair value 80 — — 80 66 — — 66 Accrued interest receivable on debt securities totaled $54 million and $55 million as of June 30, 2021 and December 31, 2020, respectively, and is included in other assets in the Consolidated Balance Sheets. The following table presents the amortized cost and fair value of debt securities by contractual maturity as of June 30, 2021. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without incurring penalties. June 30, 2021 Distribution of Maturities (in millions) 1 Year or Less After 1 Year through 5 Years After 5 Years through 10 Years After 10 Years Total Amortized cost: U.S. Treasury and other $11 $— $— $— $11 State and political subdivisions — — — 3 3 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities 6 42 1,861 22,051 23,960 Other/non-agency — — — 267 267 Collateralized loan obligations — — — 177 177 Total debt securities available for sale 17 42 1,861 22,498 24,418 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities — — — 1,887 1,887 Asset-backed securities — — 824 — 824 Total debt securities held to maturity — — 824 1,887 2,711 Total amortized cost of debt securities $17 $42 $2,685 $24,385 $27,129 Fair value: U.S. Treasury and other $11 $— $— $— $11 State and political subdivisions — — — 3 3 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities 6 44 1,916 22,146 24,112 Other/non-agency — — — 280 280 Collateralized loan obligations — — — 177 177 Total debt securities available for sale 17 44 1,916 22,606 24,583 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities — — — 1,964 1,964 Asset-backed securities — — 826 — 826 Total debt securities held to maturity — — 826 1,964 2,790 Total fair value of debt securities $17 $44 $2,742 $24,570 $27,373 Taxable interest income from investment securities as presented in the Consolidated Statements of Operations was $124 million and $130 million for the three months ended June 30, 2021 and 2020, respectively, and $252 million and $277 million for the six months ended June 30, 2021 and 2020, respectively. The following table presents realized gains and losses on securities: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Gains on sale of debt securities $3 $3 $6 $3 Losses on sale of debt securities — — — — Debt securities gains, net $3 $3 $6 $3 The following table presents the amortized cost and fair value of debt securities pledged: June 30, 2021 December 31, 2020 (in millions) Amortized Cost Fair Value Amortized Cost Fair Value Pledged against derivatives, to qualify for fiduciary powers, and to secure public and other deposits as required by law $4,996 $5,028 $3,818 $3,937 Pledged against FHLB borrowed funds 266 280 394 423 Pledged against repurchase agreements 49 52 224 231 The Company regularly enters into security repurchase agreements with unrelated counterparties, which involve the transfer of a security from one party to another, and a subsequent transfer of substantially the same security back to the original party. These repurchase agreements are typically short-term in nature and are accounted for as secured borrowed funds in the Company’s Consolidated Balance Sheets. The Company recognized no offsetting of short-term receivables or payables as of June 30, 2021 or December 31, 2020. The Company offsets certain derivative assets and derivative liabilities in the Consolidated Balance Sheets. For further information, see Note 8. Securitizations of mortgage loans retained in the investment portfolio were $82 million and $163 million for the three and six months ended June 30, 2021, respectively. There were no securitizations of mortgage loans retained in the investment portfolio for the three and six months ended June 30, 2020. These securitizations include a substantive guarantee by a third party. In 2021, the guarantors were FNMA, FHLMC, and GNMA. The debt securities received from the guarantors are classified as AFS. Impairment As of June 30, 2021, the Company concluded that 70% of HTM securities met the zero expected credit loss criteria; therefore, no ACL was recognized. For the remaining 30%, the lifetime expected credit losses were determined to be insignificant based on the modeling of the Company’s credit loss position in the security. The Company monitors the credit exposure through the use of credit quality indicators. For these securities, the Company uses external credit ratings or an internally derived credit rating when an external rating is not available. All securities were determined to be investment grade at June 30, 2021. The following tables present AFS mortgage-backed debt securities with fair values below their respective carrying values, separated by the duration the securities have been in a continuous unrealized loss position: June 30, 2021 Less than 12 Months 12 Months or Longer Total (dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Federal agencies and U.S. government sponsored entities $10,916 ($200) $92 ($2) $11,008 ($202) December 31, 2020 Less than 12 Months 12 Months or Longer Total (dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Federal agencies and U.S. government sponsored entities $1,991 ($19) $— $— $1,991 ($19)

LOANS AND LEASES

LOANS AND LEASES	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
LOANS AND LEASES	NOTE 3 - LOANS AND LEASES Loans held for investment are reported at the amount of their outstanding principal, net of charge-offs, unearned income, deferred loan origination fees and costs, and unamortized premiums or discounts on purchased loans. The following table presents loans and leases, excluding LHFS. (in millions) June 30, 2021 December 31, 2020 Commercial and industrial (1) $42,842 $44,173 Commercial real estate 14,412 14,652 Leases 1,829 1,968 Total commercial 59,083 60,793 Residential mortgages (2) 20,538 19,539 Home equity 11,841 12,149 Automobile 12,780 12,153 Education 12,800 12,308 Other retail 5,539 6,148 Total retail 63,498 62,297 Total loans and leases $122,581 $123,090 (1) Includes $3.5 billion and $4.2 billion of PPP loans fully guaranteed by the SBA as of June 30, 2021 and December 31, 2020, respectively. (2) Includes fully or partially guaranteed FHA, VA and USDA loans of $1.4 billion at June 30, 2021 and $249 million at December 31, 2020, including loans acquired through an exercise of the GNMA early buyout option. Included in other assets is accrued interest receivable on loans and leases held for investment totaling $467 million and $449 million as of June 30, 2021 and December 31, 2020, respectively. During the three months ended June 30, 2021 and 2020, the Company purchased $351 million and $691 million of education loans, and $176 million and $255 million of other retail loans. During the six months ended June 30, 2021 and 2020, the Company purchased $652 million and $909 million of education loans, and $353 million and $527 million of other retail loans, respectively. During the three months ended June 30, 2021 and 2020, the Company sold $237 million and $71 million of commercial loans, respectively. During the six months ended June 30, 2021 and 2020, the Company sold $563 million and $262 million of commercial loans, respectively. During the six months ended June 30, 2020, the company sold $1.5 billion of residential mortgage loans as compared to none in the same period of 2021. Loans pledged as collateral for FHLB borrowed funds, primarily residential mortgages and home equity products, totaled $24.7 billion and $25.5 billion at June 30, 2021 and December 31, 2020, respectively. Loans pledged as collateral to support the contingent ability to borrow at the FRB discount window, if necessary, were primarily comprised of education, automobile, commercial and industrial, and commercial real estate loans, and totaled $39.7 billion and $40.0 billion at June 30, 2021 and December 31, 2020, respectively. Interest income on direct financing and sales-type leases was $12 million and $19 million for the three months ended June 30, 2021 and 2020, respectively, and is reported within interest and fees on loans and leases in the Consolidated Statements of Operations. For the six months ended June 30, 2021 and 2020, this interest income was $25 million and $37 million, respectively. The following table presents the composition of LHFS. June 30, 2021 December 31, 2020 (in millions) Residential Mortgages (1) Commercial (2) Total Residential Mortgages (1) Commercial (2) Total Loans held for sale at fair value $3,499 $117 $3,616 $3,416 $148 $3,564 Other loans held for sale — 82 82 — 439 439 (1) Residential mortgage LHFS are originated for sale. (2) Commercial LHFS at fair value consist of loans managed by the Company’s commercial secondary loan desk. Other commercial LHFS generally consist of loans associated with the Company’s syndication business.

ALLOWANCE FOR CREDIT LOSSES, NO

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK	NOTE 4 - ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK Allowance for Credit Losses Recorded in the ACL is management’s estimate of expected credit losses in the Company’s loan and lease portfolios. See Note 5 in the Company’s 2020 Form 10-K for a detailed discussion of the ACL reserve methodology and estimation techniques as of December 31, 2020. There were no significant changes to the ACL reserve methodology in the six months ended June 30, 2021. The following table presents a summary of changes in the ALLL and the allowance for unfunded lending commitments for the three months ended and six months ended June 30, 2021: Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 (in millions) Commercial Retail Total Commercial Retail Total Allowance for loan and lease losses, beginning of period $1,146 $1,048 $2,194 $1,233 $1,210 $2,443 Charge-offs (45) (80) (125) (179) (173) (352) Recoveries 4 43 47 34 82 116 Net charge-offs (41) (37) (78) (145) (91) (236) Provision charged to income (152) (17) (169) (135) (125) (260) Allowance for loan and lease losses, end of period $953 $994 $1,947 $953 $994 $1,947 Allowance for unfunded lending commitments, beginning of period $165 $13 $178 $186 $41 $227 Provision for unfunded lending commitments (44) — (44) (65) (28) (93) Allowance for unfunded lending commitments, end of period $121 $13 $134 $121 $13 $134 Overall, an ending ACL balance of $2.1 billion at June 30, 2021 compared to $2.7 billion at December 31, 2020. The difference in ACL as of June 30, 2021 as compared to December 31, 2020 was due to net charge-offs of $236 million, as detailed below, coupled with a credit provision benefit of $353 million. This reflected strong credit performance across the retail and commercial loan portfolios, and improvement in the macroeconomic outlook. The increase in commercial net charge-offs of $30 million for the six months ended June 30, 2021 as compared to the six months ended June 30, 2020 was driven by COVID-19-related charge-offs in CRE. Retail net charge-offs were down $78 million in the six months ended June 30, 2021 as compared to the six months ended June 30, 2020 as a result of government stimulus and forbearance programs as well as strong collateral values in automobile and residential real estate. To determine the ACL as of June 30, 2021, Citizens utilized an economic forecast that generally reflects real GDP growth of approximately 5.7% over 2021. The forecast also projects the unemployment rate to be in the range of 5.9% to 6.6% throughout 2021. This forecast reflects an overall improved macroeconomic outlook as compared to December 31, 2020. In addition to judgment applied to the commercial portfolio as a whole, Citizens continued to apply management judgment to adjust the modeled reserves in the commercial industry sectors most impacted by the COVID-19 pandemic and associated lockdowns, including CRE retail and hospitality and casual dining. The following table presents a summary of changes in the ALLL and the allowance for unfunded lending commitments for the three months and six months ended June 30, 2020: Three Months Ended June 30, 2020 Six Months Ended June 30, 2020 (in millions) Commercial Retail Total Commercial Retail Total Allowance for loan and lease losses, beginning of period $752 $1,419 $2,171 $674 $578 $1,252 Cumulative effect of change in accounting principle — — — (176) 629 453 Allowance for loan and lease losses, beginning of period, adjusted 752 1,419 2,171 498 1,207 1,705 Charge-offs (74) (106) (180) (121) (233) (354) Recoveries 3 30 33 6 64 70 Net charge-offs (71) (76) (147) (115) (169) (284) Provision charged to income 554 (130) 424 852 175 1,027 Allowance for loan and lease losses, end of period $1,235 $1,213 $2,448 $1,235 $1,213 $2,448 Allowance for unfunded lending commitments, beginning of period $38 $1 $39 $44 $— $44 Cumulative effect of change in accounting principle — — — (3) 1 (2) Allowance for unfunded lending commitments, beginning of period, adjusted 38 1 39 41 1 42 Provision for unfunded lending commitments 31 9 40 28 9 37 Allowance for unfunded lending commitments, end of period $69 $10 $79 $69 $10 $79 Credit Quality Indicators The Company presents loan and lease portfolio segments and classes by credit quality indicator and vintage year. Citizens defines the vintage date for the purpose of this disclosure as the date of the most recent credit decision. In general, renewals are categorized as new credit decisions and reflect the renewal date as the vintage date. Loans modified in a TDR are considered a continuation of the original loan and vintage date corresponds with the most recent credit decision. For commercial loans and leases, Citizens utilizes regulatory classification ratings to monitor credit quality. The assignment of regulatory classification ratings occurs at loan origination and are periodically re-evaluated by Citizens utilizing a risk-based approach, including any time management becomes aware of information affecting the borrowers' ability to fulfill their obligations. The review process considers both quantitative and qualitative factors. Loans with a “pass” rating are those that the Company believes will fully repay in accordance with the contractual loan terms. Commercial loans and leases identified as “criticized” have some weakness or potential weakness that indicate an increased probability of future loss. Citizens groups “criticized” loans into three categories, “special mention,” “substandard,” and “doubtful.” Special mention loans have potential weaknesses that, if left uncorrected, may result in deterioration of the Company’s credit position at some future date. Substandard loans are inadequately protected loans; these loans have well-defined weaknesses that could hinder normal repayment or collection of the debt. Doubtful loans have the same weaknesses as substandard, with the added characteristic that the possibility of loss is high and collection of the full amount of the loan is improbable. The following table presents the amortized cost basis of commercial loans and leases, by vintage date and regulatory classification rating, as of June 30, 2021: Term Loans by Origination Year Revolving Loans (in millions) 2021 2020 2019 2018 2017 Prior to 2017 Within the Revolving Period Converted to Term Total Commercial and industrial Pass (1) $5,146 $5,140 $5,260 $3,623 $1,975 $2,797 $15,853 $151 $39,945 Special Mention 3 41 196 196 74 181 454 — 1,145 Substandard 32 125 263 267 114 226 583 21 1,631 Doubtful 27 16 16 22 12 18 7 3 121 Total commercial and industrial 5,208 5,322 5,735 4,108 2,175 3,222 16,897 175 42,842 Commercial real estate Pass 462 2,572 3,726 3,013 1,026 1,507 809 — 13,115 Special Mention 73 7 193 102 155 122 14 — 666 Substandard 1 39 210 135 146 73 — — 604 Doubtful — 9 16 — — 2 — — 27 Total commercial real estate 536 2,627 4,145 3,250 1,327 1,704 823 — 14,412 Leases Pass 269 368 216 203 98 622 — — 1,776 Special Mention 1 2 1 2 5 18 — — 29 Substandard — 16 5 1 — 1 — — 23 Doubtful — — — — — 1 — — 1 Total leases 270 386 222 206 103 642 — — 1,829 Total commercial Pass (1) 5,877 8,080 9,202 6,839 3,099 4,926 16,662 151 54,836 Special Mention 77 50 390 300 234 321 468 — 1,840 Substandard 33 180 478 403 260 300 583 21 2,258 Doubtful 27 25 32 22 12 21 7 3 149 Total commercial $6,014 $8,335 $10,102 $7,564 $3,605 $5,568 $17,720 $175 $59,083 (1) Includes $3.5 billion of PPP loans designated as pass that are fully guaranteed by the SBA originating in 2021 and 2020. The following table presents the amortized cost basis of commercial loans and leases, by vintage date and regulatory classification rating, as of December 31, 2020: Term Loans by Origination Year Revolving Loans (in millions) 2020 2019 2018 2017 2016 Prior to 2016 Within the Revolving Period Converted to Term Total Commercial and industrial Pass (1) $8,036 $5,730 $4,180 $2,174 $1,157 $1,980 $17,281 $340 $40,878 Special Mention 34 264 163 84 60 173 771 34 1,583 Substandard 91 195 248 100 81 127 600 22 1,464 Doubtful 65 10 34 38 3 31 63 4 248 Total commercial and industrial 8,226 6,199 4,625 2,396 1,301 2,311 18,715 400 44,173 Commercial real estate Pass 1,848 2,836 2,810 1,106 566 919 3,271 — 13,356 Special Mention 19 130 121 92 94 48 300 — 804 Substandard 116 2 65 5 53 26 149 — 416 Doubtful 16 26 8 — — 2 24 — 76 Total commercial real estate 1,999 2,994 3,004 1,203 713 995 3,744 — 14,652 Leases Pass 455 246 229 139 180 673 — — 1,922 Special Mention 3 4 2 4 2 18 — — 33 Substandard — 2 2 4 4 — — — 12 Doubtful — — — — — 1 — — 1 Total leases 458 252 233 147 186 692 — — 1,968 Total commercial Pass (1) 10,339 8,812 7,219 3,419 1,903 3,572 20,552 340 56,156 Special Mention 56 398 286 180 156 239 1,071 34 2,420 Substandard 207 199 315 109 138 153 749 22 1,892 Doubtful 81 36 42 38 3 34 87 4 325 Total commercial $10,683 $9,445 $7,862 $3,746 $2,200 $3,998 $22,459 $400 $60,793 (1) Includes $4.2 billion PPP loans designated as pass that are fully guaranteed by the SBA originating in 2020. For retail loans, Citizens utilizes FICO credit scores and the loan’s payment and delinquency status to monitor credit quality. Management believes FICO scores are the strongest indicator of credit losses over the contractual life of the loan and assist management in predicting the borrower’s future payment performance. Scores are based on current and historical national industry-wide consumer level credit performance data. The following table presents the amortized cost basis of retail loans, by vintage date and FICO scores, as of June 30, 2021: Term Loans by Origination Year Revolving Loans (in millions) 2021 2020 2019 2018 2017 Prior to 2017 Within the Revolving Period Converted to Term Total Residential mortgages 800+ $851 $3,079 $1,574 $454 $897 $2,697 $— $— $9,552 740-799 1,619 2,261 890 311 448 1,335 — — 6,864 680-739 377 653 360 178 169 660 — — 2,397 620-679 42 112 180 103 117 328 — — 882 <620 2 49 153 162 167 293 — — 826 No FICO available (1) 2 3 1 — — 11 — — 17 Total residential mortgages 2,893 6,157 3,158 1,208 1,798 5,324 — — 20,538 Home equity 800+ 1 2 6 6 5 170 4,292 318 4,800 740-799 — 1 5 6 6 146 3,333 306 3,803 680-739 — 1 8 13 18 162 1,608 274 2,084 620-679 — 3 13 24 20 133 336 182 711 <620 — 3 20 25 23 106 79 187 443 No FICO available (1) — — — — — — — — — Total home equity 1 10 52 74 72 717 9,648 1,267 11,841 Automobile 800+ 756 951 681 333 223 122 — — 3,066 740-799 1,096 1,320 813 401 242 122 — — 3,994 680-739 969 1,109 690 335 190 98 — — 3,391 620-679 458 506 345 184 108 63 — — 1,664 <620 59 138 180 133 90 61 — — 661 No FICO available (1) 3 — — — — 1 — — 4 Total automobile 3,341 4,024 2,709 1,386 853 467 — — 12,780 Education 800+ 564 1,843 1,103 662 590 1,066 — — 5,828 740-799 759 1,831 892 480 338 614 — — 4,914 680-739 204 536 289 172 123 300 — — 1,624 620-679 14 54 45 37 29 110 — — 289 <620 1 6 10 12 10 49 — — 88 No FICO available (1) 2 — — — — 55 — — 57 Total education 1,544 4,270 2,339 1,363 1,090 2,194 — — 12,800 Other retail 800+ 107 343 209 100 48 42 357 — 1,206 740-799 169 479 285 128 58 36 662 2 1,819 680-739 150 372 190 85 37 18 593 5 1,450 620-679 94 181 65 28 10 6 208 6 598 <620 11 39 23 13 4 2 66 7 165 No FICO available (1) 6 8 — — — — 285 2 301 Total other retail 537 1,422 772 354 157 104 2,171 22 5,539 Total retail 800+ 2,279 6,218 3,573 1,555 1,763 4,097 4,649 318 24,452 740-799 3,643 5,892 2,885 1,326 1,092 2,253 3,995 308 21,394 680-739 1,700 2,671 1,537 783 537 1,238 2,201 279 10,946 620-679 608 856 648 376 284 640 544 188 4,144 <620 73 235 386 345 294 511 145 194 2,183 No FICO available (1) 13 11 1 — — 67 285 2 379 Total retail $8,316 $15,883 $9,030 $4,385 $3,970 $8,806 $11,819 $1,289 $63,498 (1) Represents loans for which an updated FICO score was unavailable (e.g., due to recent profile changes). The following table presents the amortized cost basis of retail loans, by vintage date and FICO scores, as of December 31, 2020: Term Loans by Origination Year Revolving Loans (in millions) 2020 2019 2018 2017 2016 Prior to 2016 Within the Revolving Period Converted to Term Total Residential mortgages 800+ $2,687 $1,885 $638 $1,129 $1,615 $1,755 $— $— $9,709 740-799 2,931 1,133 398 527 743 904 — — 6,636 680-739 784 351 162 172 295 458 — — 2,222 620-679 97 94 44 56 66 223 — — 580 <620 12 28 35 58 50 185 — — 368 No FICO available (1) 1 2 1 5 1 14 — — 24 Total residential mortgages 6,512 3,493 1,278 1,947 2,770 3,539 — — 19,539 Home equity 800+ 2 8 10 7 5 216 4,319 344 4,911 740-799 2 6 7 6 5 180 3,234 331 3,771 680-739 1 6 10 15 8 179 1,632 284 2,135 620-679 — 10 18 21 14 136 402 195 796 <620 1 17 30 29 18 122 105 214 536 Total home equity 6 47 75 78 50 833 9,692 1,368 12,149 Automobile 800+ 1,056 812 424 312 169 62 — — 2,835 740-799 1,514 1,022 531 344 172 59 — — 3,642 680-739 1,347 889 461 282 138 47 — — 3,164 620-679 669 484 259 157 84 32 — — 1,685 <620 140 242 189 137 79 34 — — 821 No FICO available (1) 2 — — — — 4 — — 6 Total automobile 4,728 3,449 1,864 1,232 642 238 — — 12,153 Education 800+ 1,817 1,363 849 781 578 777 — — 6,165 740-799 1,797 1,009 541 387 251 423 — — 4,408 680-739 450 294 173 127 90 221 — — 1,355 620-679 26 35 33 28 25 95 — — 242 <620 2 5 10 10 8 41 — — 76 No FICO available (1) 2 — — — — 60 — — 62 Total education 4,094 2,706 1,606 1,333 952 1,617 — — 12,308 Other retail 800+ 461 380 163 77 15 44 341 — 1,481 740-799 620 460 184 81 19 31 638 2 2,035 680-739 495 302 111 48 10 13 561 5 1,545 620-679 248 104 37 14 3 5 174 7 592 <620 24 30 17 6 1 3 77 8 166 No FICO available (1) 54 1 — — — — 272 2 329 Total other retail 1,902 1,277 512 226 48 96 2,063 24 6,148 Total retail 800+ 6,023 4,448 2,084 2,306 2,382 2,854 4,660 344 25,101 740-799 6,864 3,630 1,661 1,345 1,190 1,597 3,872 333 20,492 680-739 3,077 1,842 917 644 541 918 2,193 289 10,421 620-679 1,040 727 391 276 192 491 576 202 3,895 <620 179 322 281 240 156 385 182 222 1,967 No FICO available (1) 59 3 1 5 1 78 272 2 421 Total retail $17,242 $10,972 $5,335 $4,816 $4,462 $6,323 $11,755 $1,392 $62,297 (1) Represents loans for which an updated FICO score was unavailable (e.g., due to recent profile changes). Nonaccrual and Past Due Assets The following table presents nonaccrual loans and leases and loans accruing and 90 days or more past due: As of June 30, 2021 As of December 31, 2020 (in millions) Nonaccrual loans and leases 90+ days past due and accruing Nonaccrual with no related ACL Nonaccrual loans and leases 90+ days past due and accruing Nonaccrual with no related ACL Commercial and industrial $163 $— $40 $280 $20 $56 Commercial real estate 102 — 37 176 — 2 Leases 1 1 — 2 1 — Total commercial 266 1 77 458 21 58 Residential mortgages (1) 174 270 138 167 30 96 Home equity 234 — 189 276 — 207 Automobile 62 — 34 72 — 17 Education 21 2 2 18 2 2 Other retail 22 7 2 28 9 — Total retail 513 279 365 561 41 322 Total loans and leases $779 $280 $442 $1,019 $62 $380 (1) 90+ days past due and accruing includes $266 million and $21 million of loans fully or partially guaranteed by the FHA, VA and USDA for June 30, 2021 and December 31, 2020, respectively. Interest income is generally not recognized for loans and leases that are on nonaccrual status. The Company reverses accrued interest receivable with a charge to interest income upon classifying the loan or lease as nonaccrual. The following table presents an analysis of the age of both accruing and nonaccruing loan and lease past due amounts: June 30, 2021 December 31, 2020 Days Past Due Days Past Due (in millions) Current-29 30-59 60-89 90+ Total Current-29 30-59 60-89 90+ Total Commercial and industrial $42,769 $24 $7 $42 $42,842 $43,817 $223 $16 $117 $44,173 Commercial real estate 14,310 1 — 101 14,412 14,531 1 85 35 14,652 Leases 1,827 — — 2 1,829 1,956 9 — 3 1,968 Total commercial 58,906 25 7 145 59,083 60,304 233 101 155 60,793 Residential mortgages (1) 19,885 176 61 416 20,538 19,291 59 21 168 19,539 Home equity 11,607 32 17 185 11,841 11,848 61 28 212 12,149 Automobile 12,613 114 43 10 12,780 11,901 170 65 17 12,153 Education 12,747 29 13 11 12,800 12,255 33 13 7 12,308 Other retail 5,454 37 20 28 5,539 6,047 38 29 34 6,148 Total retail 62,306 388 154 650 63,498 61,342 361 156 438 62,297 Total $121,212 $413 $161 $795 $122,581 $121,646 $594 $257 $593 $123,090 (1) 90+ days past due includes $266 million and $44 million of loans fully or partially guaranteed by the FHA, VA, and USDA at June 30, 2021 and December 31, 2020, respectively. At June 30, 2021 and December 31, 2020, the Company had collateral-dependent residential mortgage and home equity loans totaling $554 million and $552 million, respectively. At June 30, 2021 and December 31, 2020, the Company had collateral-dependent commercial loans totaling $66 million and $206 million, respectively. The amortized cost basis of mortgage loans collateralized by residential real estate for which formal foreclosure proceedings were in process was $152 million and $119 million as of June 30, 2021 and December 31, 2020, respectively. Troubled Debt Restructurings The following tables summarize loans modified during the three and six months ended June 30, 2021 and June 30, 2020. The balances represent the post-modification outstanding amortized cost basis and may include loans that became TDRs during the period and were subsequently paid off in full, charged off, or sold prior to period end. Pre-modification balances for modified loans approximate the post-modification balances shown. Three Months Ended June 30, 2021 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 15 $— $3 $54 $57 Commercial real estate — — — — — Total commercial 15 — 3 54 57 Residential mortgages 671 8 120 44 172 Home equity 102 1 3 3 7 Automobile 379 1 — 5 6 Education 265 — — 9 9 Other retail 585 1 — — 1 Total retail 2,002 11 123 61 195 Total 2,017 $11 $126 $115 $252 Three Months Ended June 30, 2020 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 19 $— $3 $53 $56 Commercial real estate — — — — — Total commercial 19 — 3 53 56 Residential mortgages 145 11 14 3 28 Home equity 266 2 4 11 17 Automobile 947 — — 15 15 Education 142 — — 4 4 Other retail 710 3 — 1 4 Total retail 2,210 16 18 34 68 Total 2,229 $16 $21 $87 $124 Six Months Ended June 30, 2021 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 22 $— $6 $54 $60 Commercial real estate — — — — — Total commercial 22 — 6 54 60 Residential mortgages 713 12 126 47 185 Home equity 249 3 8 7 18 Automobile 1,048 1 — 13 14 Education 412 — — 13 13 Other retail 1,215 4 — 1 5 Total retail 3,637 20 134 81 235 Total 3,659 $20 $140 $135 $295 Six Months Ended June 30, 2020 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 38 $— $3 $94 $97 Commercial real estate — — — — — Total commercial 38 — 3 94 97 Residential mortgages 241 17 21 7 45 Home equity 389 6 4 15 25 Automobile 1,177 1 — 17 18 Education 233 — — 6 6 Other retail 1,683 7 — 2 9 Total retail 3,723 31 25 47 103 Total 3,761 $31 $28 $141 $200 (1) Includes modifications that consist of multiple concessions, one of which is an interest rate reduction. (2) Includes modifications that consist of multiple concessions, one of which is a maturity extension (unless one of the other concessions was an interest rate reduction). (3) Includes modifications other than interest rate reductions or maturity extensions, such as lowering scheduled payments for a specified period of time, principal forgiveness, and capitalizing arrearages. Also included are the following: deferrals, trial modifications, certain bankruptcies, loans in forbearance and prepayment plans. Modifications can include the deferral of accrued interest resulting in post-modification balances being higher than pre-modification. Modified TDRs resulted in charge-offs of $2 million and $4 million for the three months ended June 30, 2021 and 2020, respectively. Citizens recorded $4 million and $6 million of charge-offs related to TDRs for each of the six months ended June 30, 2021 and 2020, respectively. Unfunded commitments related to TDRs were $45 million and $49 million at June 30, 2021 and December 31, 2020, respectively. A payment default refers to a loan that becomes 90 days or more past due under the modified terms. Loan data includes loans meeting the criteria that were paid off in full, charged off, or sold prior to June 30, 2021 and 2020. For commercial loans, recorded investment in TDRs that defaulted within 12 months of their modification date for the three months ended June 30, 2021 were $1 million and there were $26 million for the three months ended June 30, 2020. The amortized cost basis of commercial TDRs that defaulted within 12 months of their modification date was $23 million and $39 million in the six months ended June 30, 2021 and 2020, respectively. For retail loans, there were $14 million and $14 million of loans which defaulted within their restructuring date for the three months ended June 30, 2021 and 2020, respectively. There were $29 million and $25 million of loans which defaulted within 12 months of their restructuring date for the six months ended June 30, 2021 and 2020, respectively. Concentrations of Credit Risk Most of the Company’s lending activity is with customers located in the New England, Mid-Atlantic and Midwest regions. Generally, loans are collateralized by assets including real estate, inventory, accounts receivable, other personal property and investment securities. As of June 30, 2021 and December 31, 2020, Citizens had a significant amount of loans collateralized by residential and commercial real estate. There were no significant concentration risks within the commercial loan or retail loan portfolios. Exposure to credit losses arising from lending transactions may fluctuate with fair values of collateral supporting loans, which may not perform according to contractual agreements. The Company’s policy is to collateralize loans to the extent necessary; however, unsecured loans are also granted based on the financial strength of the applicant and the facts surrounding the transaction. Certain loan products, including residential mortgages, home equity loans and lines of credit, and credit cards, have contractual features that may increase credit exposure to the Company in the event of an increase in interest rates or a decline in housing values. These products include loans that exceed 90% of the value of the underlying collateral (high LTV loans), interest-only residential mortgages, and loans with low introductory rates. The following tables present balances of loans with these characteristics: June 30, 2021 (in millions) Residential Mortgages Home Equity Other Retail Education Total High loan-to-value $235 $27 $— $— $262 Interest-only 3,143 — — 1 3,144 Low introductory rate — — 135 — 135 Total $3,378 $27 $135 $1 $3,541 December 31, 2020 (in millions) Residential Mortgages Home Equity Other Retail Education Total High loan-to-value $289 $64 $— $— $353 Interest-only 2,801 — — — 2,801 Low introductory rate — — 170 — 170 Total $3,090 $64 $170 $1 $3,324

MORTGAGE BANKING AND OTHER

MORTGAGE BANKING AND OTHER	6 Months Ended
	Jun. 30, 2021
Mortgage Banking [Abstract]
MORTGAGE BANKING AND OTHER	NOTE 5 - MORTGAGE BANKING AND OTHER The Company sells residential mortgages to GSEs and other parties, who may issue securities backed by pools of such loans. The Company retains no beneficial interests in these sales, but may retain the servicing rights for the loans sold. The Company is obligated to subsequently repurchase a loan if the purchaser discovers a representation or warranty violation such as noncompliance with eligibility or servicing requirements, or customer fraud that should have been identified in a loan file review. The following table summarizes activity related to residential mortgage loans sold with servicing rights retained: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Cash proceeds from residential mortgage loans sold with servicing retained $10,540 $8,797 $19,577 $14,164 Gain on sales (1) 85 283 225 426 Contractually specified servicing, late and other ancillary fees (1) 60 55 118 113 (1) Reported in mortgage banking fees in the Consolidated Statements of Operations. The unpaid principal balance of the related residential mortgage loans was $84.6 billion and $81.2 billion at June 30, 2021 and December 31, 2020, respectively. The Company manages an active hedging strategy to manage the risk associated with changes in the value of the MSR portfolio, which includes the purchase of freestanding derivatives. The following table summarizes changes in MSRs recorded using the fair value method: As of and for the Three Months Ended June 30, As of and for the Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Fair value as of beginning of the period $893 $577 $658 $642 Transfers upon election of fair value method (1) — — — 190 Fair value as of beginning of the period, adjusted 893 577 658 832 Amounts capitalized 122 86 209 153 Changes in unpaid principal balance during the period (2) (47) (46) (105) (86) Changes in fair value during the period (3) (66) (49) 140 (331) Fair value at end of the period $902 $568 $902 $568 (1) Effective January 1, 2020, the Company elected to account for all MSRs previously accounted for under the amortization method under the fair value method. (2) Represents changes in value of the MSRs due to i) passage of time including the impact from both regularly scheduled loan principal payments and partial paydowns, and ii) loans that paid off during the period. (3) Represents changes in value primarily driven by market conditions. These changes are recorded in mortgage banking fees in the Consolidated Statements of Operations. The fair value of MSRs is estimated by using the present value of estimated future net servicing cash flows, taking into consideration actual and expected mortgage loan prepayment rates, discount rates, contractual servicing fee income, servicing costs, default rates, ancillary income, and other economic factors, which are determined based on current market interest rates. The valuation does not attempt to forecast or predict the future direction of interest rates. The sensitivity analysis below presents the impact to current fair value of an immediate 50 basis point and 100 basis point adverse change in key economic assumptions and the decline in fair value if the respective adverse change was realized. These sensitivities are hypothetical, with the effect of a variation in a particular assumption on the fair value of the MSRs calculated independently without changing any other assumption. In reality, changes in one factor may result in changes in another (e.g., changes in interest rates, which drive changes in prepayment rates, could result in changes in the discount rates), which may amplify or counteract the sensitivities. The primary risk inherent in the Company’s MSRs is an increase in prepayments of the underlying mortgage loans serviced, which is largely dependent upon movements in market interest rates. June 30, 2021 December 31, 2020 Actual Decline in fair value due to Actual Decline in fair value due to (dollars in millions) Fair value $902 50 bps adverse change 100 bps adverse change $658 50 bps adverse change 100 bps adverse change Weighted average life (in years) 5.7 4.2 Weighted average constant prepayment rate (1) 11.9% $129 $273 17.3% $122 $202 Weighted average option adjusted spread 581 bps 18 36 595 bps 12 24 (1) Estimated adverse change for the weighted average constant prepayment rate based on an adverse change in market interest rates . Other Serviced Loans From time to time, Citizens engages in other servicing relationships. The following table presents the unpaid principal balance of other serviced loans: (in millions) June 30, 2021 December 31, 2020 Education $867 $974 Commercial (1) 61 51 (1) Represents the government guaranteed portion of SBA loans sold to outside investors.

VARIABLE INTEREST ENTITIES

VARIABLE INTEREST ENTITIES	6 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
VARIABLE INTEREST ENTITIES	NOTE 6 - VARIABLE INTEREST ENTITIES Citizens is involved in various entities that are considered VIEs, including investments in limited partnerships that sponsor affordable housing projects, limited liability companies that sponsor renewable energy projects or asset-backed securities, and lending to special purpose entities. Citizens’ maximum exposure to loss as a result of its involvement with these entities is limited to the balance sheet carrying amount of its investment in equity and asset-backed securities, unfunded commitments, and outstanding principal balance of loans to special purpose entities. The Company does not consolidate any of its investments in these entities. These investments are included in other assets in the Consolidated Balance Sheets. For more details see Note 10 in the 2020 Form 10-K. A summary of these investments is presented below: (in millions) June 30, 2021 December 31, 2020 Lending to special purpose entities included in loans and leases $1,520 $1,295 LIHTC investment included in other assets 1,926 1,687 LIHTC unfunded commitments included in other liabilities 974 875 Investment in asset-backed securities included in HTM securities 826 893 Renewable energy investments included in other assets 448 403 Lending to Special Purpose Entities Citizens provides lending facilities to third-party sponsored special purpose entities. As of June 30, 2021 and December 31, 2020, the lending facilities had aggregate unpaid principal balances of $1.5 billion and $1.3 billion, respectively, and undrawn commitments to extend credit of $1.7 billion and $1.5 billion, respectively. Low Income Housing Tax Credit Partnerships The purpose of the Company’s equity investments is to assist in achieving the goals of the Community Reinvestment Act and to earn an adequate return of capital. The following table presents other information related to the Company’s affordable housing tax credit investments: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Tax credits included in income tax expense $51 $39 $102 $80 Other tax benefits included in income tax expense 13 10 25 20 Total tax benefits included in income tax expense 64 49 127 100 Less: Amortization included in income tax expense 53 42 106 85 Net benefits from affordable housing tax credit investments included in income tax expense $11 $7 $21 $15

BORROWED FUNDS

BORROWED FUNDS	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
BORROWED FUNDS	NOTE 7 - BORROWED FUNDS Short-term borrowed funds Short-term borrowed funds were $62 million and $243 million as of June 30, 2021 and December 31, 2020, respectively. Long-term borrowed funds The following table presents a summary of the Company’s long-term borrowed funds: (in millions) June 30, 2021 December 31, 2020 Parent Company: 2.375% fixed-rate senior unsecured debt, due July 2021 (1) $— $350 4.150% fixed-rate subordinated debt, due September 2022 (2) 168 182 3.750% fixed-rate subordinated debt, due July 2024 (2) 90 159 4.023% fixed-rate subordinated debt, due October 2024 (2) 17 25 4.350% fixed-rate subordinated debt, due August 2025 (2) 133 193 4.300% fixed-rate subordinated debt, due December 2025 (2) 336 450 2.850% fixed-rate senior unsecured notes, due July 2026 497 497 2.500% fixed-rate senior unsecured notes, due February 2030 298 297 3.250% fixed-rate senior unsecured notes, due April 2030 745 745 3.750% fixed-rate reset subordinated debt, due February 2031 (2) 69 — 4.300% fixed-rate reset subordinated debt, due February 2031 (2) 135 — 4.350% fixed-rate reset subordinated debt, due February 2031 (2) 60 — 2.638% fixed-rate subordinated debt, due September 2032 547 543 CBNA’s Global Note Program: 2.550% senior unsecured notes, due May 2021 — 1,003 3.250% senior unsecured notes, due February 2022 708 716 0.874% floating-rate senior unsecured notes, due February 2022 (3) 300 299 0.951% floating-rate senior unsecured notes, due May 2022 (3) 250 250 2.650% senior unsecured notes, due May 2022 507 510 3.700% senior unsecured notes, due March 2023 520 527 1.096% floating-rate senior unsecured notes, due March 2023 (3) 250 249 2.250% senior unsecured notes, due April 2025 746 746 3.750% senior unsecured notes, due February 2026 536 551 Additional Borrowings by CBNA and Other Subsidiaries: Federal Home Loan Bank advances, 0.909% weighted average rate, due through 2038 18 19 Other 27 35 Total long-term borrowed funds $6,957 $8,346 (1) Notes were redeemed on June 28, 2021. (2) June 30, 2021 balances reflect the February 2021 completion of $265 million in private exchange offers for five series of outstanding subordinated notes whereby participants received newly issued 3.750%, 4.300%, and 4.350% fixed-rate reset subordinated notes due 2031 which are redeemable by the Company five years prior to their maturity. (3) Rate disclosed reflects the floating rate as of June 30, 2021. The Parent Company’s long-term borrowed funds as of June 30, 2021 and December 31, 2020 included principal balances of $3.2 billion and $3.5 billion, respectively, and unamortized deferred issuance costs and/or discounts of $84 million and $90 million, respectively. CBNA and other subsidiaries’ long-term borrowed funds as of June 30, 2021 and December 31, 2020 included principal balances of $3.8 billion and $4.8 billion, respectively, with unamortized deferred issuance costs and/or discounts of $9 million and $11 million, respectively, and hedging basis adjustments of $76 million and $112 million, respectively. See Note 8 for further information about the Company’s hedging of certain long-term borrowed funds. Advances, lines of credit, and letters of credit from the FHLB are collateralized primarily by residential mortgages and home equity products at least sufficient to satisfy the collateral maintenance level established by the FHLB. The utilized borrowing capacity for FHLB advances and letters of credit was $2.5 billion and $3.2 billion at June 30, 2021 and December 31, 2020, respectively. The Company’s available FHLB borrowing capacity was $14.4 billion and $13.9 billion at June 30, 2021 and December 31, 2020, respectively. Citizens can also borrow from the FRB discount window to meet short-term liquidity requirements. Collateral, including certain loans, is pledged to support this borrowing capacity. At June 30, 2021, the Company’s unused secured borrowing capacity was approximately $64.3 billion, which includes unencumbered securities, FHLB borrowing capacity, and FRB discount window capacity. The following table presents a summary of maturities for the Company’s long-term borrowed funds at June 30, 2021: (in millions) Parent Company CBNA and Other Subsidiaries Consolidated Year 2021 $— $4 $4 2022 168 1,771 1,939 2023 — 771 771 2024 107 — 107 2025 469 760 1,229 2026 and thereafter 2,351 556 2,907 Total $3,095 $3,862 $6,957

DERIVATIVES

DERIVATIVES	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	NOTE 8 - DERIVATIVES In the normal course of business, Citizens enters into a variety of derivative transactions to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates and foreign currency exchange rates. These transactions include interest rate swap contracts, interest rate options, foreign exchange contracts, residential loan commitment rate locks, interest rate future contracts, swaptions, certain commodities, forward commitments to sell TBAs, forward sale contracts and purchase options. The Company does not use derivatives for speculative purposes. Information regarding the valuation methodology and inputs used to estimate the fair value of the Company’s derivative instruments is described in Note 19 in the Company’s 2020 Form 10-K. The following table presents derivative instruments included in the Consolidated Balance Sheets: June 30, 2021 December 31, 2020 (in millions) Notional Amount (1) Derivative Assets Derivative Liabilities Notional Amount (1) Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate contracts $25,300 $16 $7 $22,300 $1 $3 Derivatives not designated as hedging instruments: Interest rate contracts 144,982 1,118 190 149,021 1,565 214 Foreign exchange contracts 20,289 273 209 16,789 320 291 Commodities contracts 431 424 427 246 62 61 TBA contracts 10,924 5 28 11,149 8 65 Other contracts 6,717 89 — 8,051 197 — Total derivatives not designated as hedging instruments 1,909 854 2,152 631 Gross derivative fair values 1,925 861 2,153 634 Less: Gross amounts offset in the Consolidated Balance Sheets (2) (207) (207) (182) (182) Less: Cash collateral applied (2) (63) (510) (56) (324) Total net derivative fair values presented in the Consolidated Balance Sheets $1,655 $144 $1,915 $128 (1) The notional or contractual amount of interest rate derivatives and foreign exchange contracts is the amount upon which interest and other payments under the contract are based. For interest rate contracts, the notional amount is typically not exchanged. Therefore, notional amounts should not be taken as the measure of credit or market risk, as they do not measure the true economic risk of these contracts. (2) Amounts represent the impact of enforceable master netting agreements that allow the Company to net settle positive and negative positions as well as collateral paid and received. The Company’s derivative transactions are internally divided into three sub-groups: institutional, customer and residential loan. Certain derivative transactions within these sub-groups are designated as fair value or cash flow hedges, as described below: Derivatives Designated As Hedging Instruments The Company’s institutional derivatives qualify for hedge accounting treatment. The net interest accruals on interest rate swaps designated in a fair value or cash flow hedge relationship are treated as an adjustment to interest income or interest expense of the item being hedged. The Company formally documents at inception all hedging relationships, as well as risk management objectives and strategies for undertaking various accounting hedges. Additionally, the Company monitors the effectiveness of its hedge relationships during the duration of the hedge period. The methods utilized to assess hedge effectiveness vary based on hedge relationship and the Company monitors each relationship to ensure that management’s initial intent continues to be satisfied. The Company discontinues hedge accounting treatment when it is determined that a derivative is not expected to be, or has ceased to be, effective as a hedge and subsequently reflects changes in the fair value of the derivative in earnings after termination of the hedge relationship. Fair Value Hedges Citizens has outstanding interest rate swap agreements utilized to manage the interest rate exposure on its long-term borrowings and AFS debt securities. Certain fair value hedges have been designated as a last-of-layer hedge, which affords the Company the ability to execute a fair value hedge of the interest rate risk associated with a portfolio of similar prepayable assets whereby the last dollar amount estimated to remain in the portfolio of assets is identified as the hedged item. The following table presents the change in fair value of interest rate contracts designated as fair value hedges, as well as the change in fair value of the related hedged items attributable to the risk being hedged, included in the Consolidated Statements of Operations: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Affected Line Item in the Consolidated Statements of Operations Interest rate swaps hedging borrowed funds ($10) $5 ($38) $98 Interest expense - long-term borrowed funds Hedged long-term debt attributable to the risk being hedged 9 (3) 37 (95) Interest expense - long-term borrowed funds Interest rate swaps hedging fixed rate loans — — — 17 Interest and fees on loans and leases Hedged fixed rate loans attributable to the risk being hedged — — — (17) Interest and fees on loans and leases Interest rate swaps hedging debt securities available for sale 4 (14) 32 (121) Interest income - investment securities Hedged debt securities available for sale attributable to risk being hedged (4) 14 (32) 121 Interest income - investment securities The following table reflects amounts recorded in the Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges: June 30, 2021 December 31, 2020 (in millions) Debt securities available for sale (1) Long-term borrowed funds Debt securities available for sale (1) Long-term borrowed funds Carrying amount of hedged assets $8,287 $— $10,869 $— Carrying amount of hedged liabilities — 2,272 — 3,307 Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items 64 76 96 112 (1) The Company designated $2.0 billion as the hedged amount (from a closed portfolio of prepayable financial assets with an amortized cost basis of $8.3 billion and $10.9 billion as of June 30, 2021 and December 31, 2020, respectively) in a last-of-layer hedging relationship, which commenced in the third quarter of 2019. Cash Flow Hedges Citizens has outstanding interest rate swap agreements designed to hedge a portion of the Company’s floating-rate assets, and liabilities. All of these swaps have been deemed highly effective cash flow hedges. During the next 12 months, there are $86 million in pre-tax net gains on derivative instruments included in OCI expected to be reclassified to net interest income in the Consolidated Statements of Operations. This amount could differ from amounts actually recognized due to changes in interest rates, hedge de-designations, and the addition of other hedges subsequent to June 30, 2021. The following table presents the pre-tax net gains (losses) recorded in the Consolidated Statements of Operations and in the Consolidated Statements of Comprehensive Income relating to derivative instruments designated as cash flow hedges: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Amount of pre-tax net gains (losses) recognized in OCI $62 ($11) $34 $118 Amount of pre-tax net gains (losses) reclassified from OCI into interest income 49 55 95 60 Amount of pre-tax net gains (losses) reclassified from OCI into interest expense (12) (10) (24) (11) Derivatives Not Designated As Hedging Instruments Economic Hedges The Company’s economic hedges include those related to offsetting customer derivatives, residential mortgage loan derivatives (including interest rate lock commitments and forward sales commitments) and derivatives to hedge its residential MSR portfolio. Customer derivatives include interest rate, foreign exchange and commodity derivative contracts designed to meet the hedging and financing needs of the Company’s customers, and are economically hedged by the Company to offset its market exposure. Interest rate lock commitments on residential mortgage loans that will be held for sale are considered derivative instruments, and are economically hedged by entering into forward sale commitments to manage changes in fair value due to interest rate risk. Residential MSR portfolio derivatives are entered to hedge the risk of changes in the fair value of the Company’s MSRs. The following table presents the effect of economic hedges on noninterest income: Amounts Recognized in Three Months Ended June 30, Six Months Ended June 30, Affected Line Item in the Consolidated Statements of Operations (in millions) 2021 2020 2021 2020 Economic hedge type: Customer interest rate contracts $133 $180 ($215) $1,269 Foreign exchange and interest rate products Derivatives hedging interest rate risk (129) (161) 227 (1,246) Foreign exchange and interest rate products Customer foreign exchange contracts 19 23 (97) (7) Foreign exchange and interest rate products Derivatives hedging foreign exchange risk (11) (50) 139 49 Foreign exchange and interest rate products Customer commodity contracts 319 7 413 (56) Foreign exchange and interest rate products Derivatives hedging commodity price risk (317) (7) (409) 57 Foreign exchange and interest rate products Residential loan commitments 67 14 (171) 154 Mortgage banking fees Derivatives hedging residential loan commitments and mortgage loans held for sale, at fair value (141) 110 134 (19) Mortgage banking fees Derivative contracts used to hedge residential MSRs 53 62 (129) 333 Mortgage banking fees Total ($7) $178 ($108) $534

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	NOTE 9 - ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) The following table presents the changes in the balances, net of income taxes, of each component of AOCI: As of and for the Three Months Ended June 30, (in millions) Net Unrealized Gains (Losses) on Derivatives Net Unrealized Gains (Losses) on Debt Securities Employee Benefit Plans Total AOCI Balance at April 1, 2020 $96 $401 ($412) $85 Other comprehensive income (loss) before reclassifications (8) 49 — 41 Amounts reclassified to the Consolidated Statements of Operations (34) (2) 4 (32) Net other comprehensive income (loss) (42) 47 4 9 Balance at June 30, 2020 $54 $448 ($408) $94 Balance at April 1, 2021 ($57) $71 ($425) ($411) Other comprehensive income (loss) before reclassifications 46 10 — 56 Amounts reclassified to the Consolidated Statements of Operations (27) (3) 4 (26) Net other comprehensive income (loss) 19 7 4 30 Balance at June 30, 2021 ($38) $78 ($421) ($381) Primary location of amounts reclassified to the Consolidated Statements of Operations Net interest income Securities gains, net Other operating expense As of and for the Six Months Ended June 30, (in millions) Net Unrealized Gains (Losses) on Derivatives Net Unrealized Gains (Losses) on Debt Securities Employee Benefit Plans Total AOCI Balance at January 1, 2020 $3 $1 ($415) ($411) Other comprehensive income (loss) before reclassifications 88 449 — 537 Amounts reclassified to the Consolidated Statements of Operations (37) (2) 7 (32) Net other comprehensive income (loss) 51 447 7 505 Balance at June 30, 2020 $54 $448 ($408) $94 Balance at January 1, 2021 ($11) $380 ($429) ($60) Other comprehensive income (loss) before reclassifications 25 (297) — (272) Amounts reclassified to the Consolidated Statements of Operations (52) (5) 8 (49) Net other comprehensive income (loss) (27) (302) 8 (321) Balance at June 30, 2021 ($38) $78 ($421) ($381) Primary location of amounts reclassified to the Consolidated Statements of Operations Net interest income Securities gains, net Other operating expense

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
STOCKHOLDERS' EQUITY	NOTE 10 - STOCKHOLDERS’ EQUITY Preferred Stock The following table summarizes the Company’s preferred stock: June 30, 2021 December 31, 2020 (in millions, except per share and share data) Liquidation value per share Preferred Shares Carrying Amount Preferred Shares Carrying Amount Authorized ($25 par value per share) 100,000,000 100,000,000 Issued and outstanding: Series A $1,000 — $— 250,000 $247 Series B 1,000 300,000 296 300,000 296 Series C 1,000 300,000 297 300,000 297 Series D 1,000 (1) 300,000 (2) 293 300,000 293 Series E 1,000 (1) 450,000 (3) 437 450,000 437 Series F 1,000 400,000 395 400,000 395 Series G 1,000 300,000 296 — — Total 2,050,000 $2,014 2,000,000 $1,965 (1) Equivalent to $25 per depositary share. (2) Represented by 12,000,000 depositary shares each representing a 1/40th interest in the Series D Preferred Stock. (3) Represented by 18,000,000 depositary shares each representing a 1/40th interest in the Series E Preferred Stock. In June 2021, the Company provided notice of its intent to redeem all outstanding shares of the 5.500% fixed-to-floating non-cumulative perpetual Series A Preferred Stock (the “Series A Preferred Stock”) on July 6, 2021. Prior to the settlement, the Company reclassified the Series A Preferred Stock from shareholders’ equity to other liabilities in the Consolidated Balance Sheets. On July 6, 2021, the Company redeemed all outstanding shares of the Series A Preferred Stock. On June 11, 2021, the Company issued $300 million, or 300,000 shares, of 4.000% fixed-rate reset non-cumulative perpetual Series G Preferred Stock, par value of $25.00 per share with a liquidation preference of $1,000 per share (the “Series G Preferred Stock”). As a result of this issuance, the Company received net proceeds of $296 million after the underwriting discount and other expenses. The Series G Preferred Stock has no stated maturity and will not be subject to any sinking fund or other obligation of the Company. Dividends, if declared, will accrue and be payable quarterly, in arrears, at a rate equal to 4.000% from the date of issuance to, but excluding, October 6, 2026, and from and including October 6, 2026, for each dividend reset period, at a rate equal to the five-year U.S. treasury rate as of the most recent reset dividend determination date, plus 3.215% per annum. The Series G Preferred Stock is redeemable at the Company’s option, in whole or in part, on any dividend payment date on or after October 6, 2026 or, in whole but not in part, at any time within the 90 days following a regulatory capital treatment event at a redemption price equal to $1,000 per share, plus any declared and unpaid dividends. The Company may not redeem shares of the Series G Preferred Stock without obtaining the prior approval of the FRB if then required under applicable capital guidelines. Except in certain limited circumstances, the Series G Preferred Stock does not have any voting rights. For further detail regarding the terms and conditions of the Company’s preferred stock, see Note 16 to the Company’s Consolidated Financial Statements in the 2020 Form 10-K. Dividends Three Months Ended June 30, 2021 Three Months Ended June 30, 2020 (in millions, except per share data) Dividends Declared per Share Dividends Declared Dividends Paid Dividends Declared per Share Dividends Declared Dividends Paid Common stock $0.39 $168 $168 $0.39 $168 $168 Preferred stock Series A $10.50 $2 $2 $13.48 $3 $7 Series B 30.00 9 — 30.00 9 — Series C 15.94 5 5 15.94 5 5 Series D 15.88 4 4 15.88 5 5 Series E 12.50 6 6 12.50 6 5 Series F 14.13 6 6 — — — Total preferred stock $32 $23 $28 $22 Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 (in millions, except per share data) Dividends Declared per Share Dividends Declared Dividends Paid Dividends Declared per Share Dividends Declared Dividends Paid Common stock $0.78 $335 $335 $0.78 $336 $336 Preferred stock Series A $20.99 $5 $5 $40.98 $10 $7 Series B 30.00 9 9 30.00 9 9 Series C 31.88 10 10 31.88 10 10 Series D 31.75 9 9 31.75 10 10 Series E 25.00 11 11 25.00 11 9 Series F 28.25 11 11 — — — Total preferred stock $55 $55 $50 $45 Treasury Stock

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	NOTE 11 - COMMITMENTS AND CONTINGENCIES A summary of outstanding off-balance sheet arrangements is presented below. For more information on these arrangements, see Note 18 in the Company’s 2020 Form 10-K. (in millions) June 30, 2021 December 31, 2020 Commitments to extend credit $76,761 $74,160 Letters of credit 1,926 2,239 Risk participation agreements 68 98 Loans sold with recourse 64 54 Marketing rights 26 29 Total $78,845 $76,580 Commitments to Extend Credit Commitments to extend credit are agreements to lend to customers in accordance with conditions contractually agreed upon in advance. Generally, the commitments have fixed expiration dates or termination clauses and may require payment of a fee. Since many of these commitments are expected to expire without being drawn upon, the contract amounts are not necessarily indicative of future cash requirements. Letters of Credit Letters of credit in the table above reflect commercial, standby financial and standby performance letters of credit. Financial and performance standby letters of credit are issued by the Company for the benefit of its customers. They are used as conditional guarantees of payment to a third party in the event the customer either fails to make specific payments (financial) or fails to complete a specific project (performance). The Company’s exposure to credit loss in the event of counterparty nonperformance in connection with the above instruments is represented by the contractual amount of those instruments. Generally, letters of credit are collateralized by cash, accounts receivable, inventory or investment securities. Credit risk associated with letters of credit is considered in determining the appropriate amounts of allowances for unfunded commitments. Standby letters of credit and commercial letters of credit are issued for terms of up to ten years and one year, respectively. Other Commitments Citizens has additional off-balance sheet arrangements that are summarized below: • Marketing Rights - During 2003, Citizens entered into a 25-year agreement to acquire the naming and marketing rights of a baseball stadium in Pennsylvania. • Loans sold with recourse - Citizens is an originator and servicer of residential mortgages and routinely sells such mortgage loans in the secondary market and to GSEs. In the context of such sales, the Company makes certain representations and warranties regarding the characteristics of the underlying loans and, as a result, may be contractually required to repurchase such loans or indemnify certain parties against losses for certain breaches of those representations and warranties. The Company also sells the government guaranteed portion of certain SBA loans to outside investors, for which it retains the servicing rights. • Risk Participation Agreements - RPAs are guarantees issued by the Company to other parties for a fee, whereby the Company agrees to participate in the credit risk of a derivative customer of the other party. The current amount of credit exposure is spread out over multiple counterparties. At June 30, 2021, the remaining terms on these RPAs ranged from less than one year to eight years. Contingencies The Company operates in a legal and regulatory environment that exposes it to potentially significant risks. A certain amount of litigation ordinarily results from the nature of the Company’s banking and other businesses. The Company is a party to legal proceedings, including class actions. The Company is also the subject of investigations, reviews, subpoenas, and regulatory matters arising out of its normal business operations, which, in some instances, relate to concerns about fair lending, unfair and/or deceptive practices, mortgage-related issues, and mis-selling of certain products. In addition, the Company engages in discussions with relevant governmental and regulatory authorities on a regular and ongoing basis regarding various issues, and any issues discussed or identified may result in investigatory or other action being taken. Litigation and regulatory matters may result in settlements, damages, fines, penalties, public or private censure, increased costs, required remediation, restrictions on business activities, or other impacts on the Company. In these disputes and proceedings, the Company contests liability and the amount of damages as appropriate. Given their complex nature, and based on the Company's experience, it may be years before some of these matters are finally resolved. Moreover, before liability can be reasonably estimated for a claim, numerous legal and factual issues may need to be examined, including through potentially lengthy discovery and determination of important factual matters, and by addressing novel or unsettled legal issues relevant to the proceedings in question. The Company cannot predict with certainty if, how, or when such claims will be resolved or what the eventual settlement, fine, penalty or other relief, if any, may be, particularly for claims that are at an early stage in their development or where claimants seek substantial or indeterminate damages. The Company recognizes a provision for a claim when, in the opinion of management after seeking legal advice, it is probable that a liability exists and the amount of loss can be reasonably estimated. In many proceedings, however, it is not possible to determine whether any loss is probable or to estimate the amount of any loss. Based on information currently available, the advice of legal counsel and other advisers, and established reserves, management believes that the aggregate liabilities, if any, potentially arising from these proceedings will not have a materially adverse effect on the Company’s unaudited interim Consolidated Financial Statements.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	NOTE 12 - FAIR VALUE MEASUREMENTS Citizens measures or monitors many of its assets and liabilities on a fair value basis. Fair value is used on a recurring basis for assets and liabilities for which fair value is the required or elected measurement basis of accounting. Additionally, fair value is used on a nonrecurring basis to evaluate assets for impairment or for disclosure purposes. Nonrecurring fair value adjustments typically involve the application of lower of cost or market accounting or write-downs of individual assets. Citizens also applies the fair value measurement guidance to determine amounts reported for certain disclosures in this Note for assets and liabilities that are not required to be reported at fair value in the financial statements. Fair Value Option Citizens elected to account for residential mortgage LHFS and certain commercial and industrial, and commercial real estate LHFS at fair value. The following table presents the difference between the aggregate fair value and the aggregate unpaid principal balance of LHFS measured at fair value: June 30, 2021 December 31, 2020 (in millions) Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal Residential mortgage loans held for sale, at fair value $3,499 $3,388 $111 $3,416 $3,260 $156 Commercial and industrial, and commercial real estate loans held for sale, at fair value 117 119 (2) 148 153 (5) For more information on the election of the fair value option for these assets see Note 19 in the Company’s 2020 Form 10-K. Recurring Fair Value Measurements Citizens utilizes a variety of valuation techniques to measure its assets and liabilities at fair value on a recurring basis. For more information on the valuation techniques utilized to measure recurring fair value see Note 19 in the Company’s 2020 Form 10-K. Collateralized Loan Obligations The fair value of CLOs is estimated using observable inputs, including prices of similar securities that trade in the market. The Company classifies these securities in Level 2 of the fair value hierarchy using these observable inputs. Derivatives - Commodities Contracts The fair value of commodity derivatives uses the mid-point of market observable quoted prices as an input into the fair value model. The model uses the observed market prices combined with other market observed inputs to derive the fair value of the instrument, which generally classifies it as Level 2 instrument. This type of derivative is exposed to counterparty risk; therefore, the Company adjusts the fair value of the contract by the credit valuation adjustment. The following table presents assets and liabilities measured at fair value, including gross derivative assets and liabilities, on a recurring basis at June 30, 2021: (in millions) Total Level 1 Level 2 Level 3 Debt securities available for sale: Mortgage-backed securities $24,392 $— $24,392 $— Collateralized loan obligations 177 — 177 — State and political subdivisions 3 — 3 — U.S. Treasury and other 11 11 — — Total debt securities available for sale 24,583 11 24,572 — Loans held for sale, at fair value: Residential loans held for sale 3,499 — 3,499 — Commercial loans held for sale 117 — 117 — Total loans held for sale, at fair value 3,616 — 3,616 — Mortgage servicing rights 902 — — 902 Derivative assets: Interest rate contracts 1,134 — 1,134 — Foreign exchange contracts 273 — 273 — Commodities contracts 424 — 424 — TBA contracts 5 — 5 — Other contracts 89 — — 89 Total derivative assets 1,925 — 1,836 89 Equity securities, at fair value 80 80 — — Total assets $31,106 $91 $30,024 $991 Derivative liabilities: Interest rate contracts $197 $— $197 $— Foreign exchange contracts 209 — 209 — Commodities contracts 427 — 427 — TBA contracts 28 — 28 — Total derivative liabilities 861 — 861 — Total liabilities $861 $— $861 $— The following table presents assets and liabilities measured at fair value, including gross derivative assets and liabilities, on a recurring basis at December 31, 2020: (in millions) Total Level 1 Level 2 Level 3 Debt securities available for sale: Mortgage-backed securities $22,928 $— $22,928 $— State and political subdivisions 3 — 3 — U.S. Treasury and other 11 11 — — Total debt securities available for sale 22,942 11 22,931 — Loans held for sale, at fair value: Residential loans held for sale 3,416 — 3,416 — Commercial loans held for sale 148 — 148 — Total loans held for sale, at fair value 3,564 — 3,564 — Mortgage servicing rights 658 — — 658 Derivative assets: Interest rate contracts 1,566 — 1,566 — Foreign exchange contracts 320 — 320 — Commodities contracts 62 — 62 — TBA contracts 8 — 8 — Other contracts 197 — — 197 Total derivative assets 2,153 — 1,956 197 Equity securities, at fair value 66 66 — — Total assets $29,383 $77 $28,451 $855 Derivative liabilities: Interest rate contracts $217 $— $217 $— Foreign exchange contracts 291 — 291 — Commodities contracts 61 — 61 — TBA contracts 65 — 65 — Total derivative liabilities 634 — 634 — Total liabilities $634 $— $634 $— The following tables present a roll forward of the balance sheet amounts for assets measured at fair value on a recurring basis and classified as Level 3: Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 (in millions) Mortgage Servicing Rights Other Derivative Contracts Mortgage Servicing Rights Other Derivative Contracts Beginning balance $893 $38 $658 $197 Issuances 122 81 209 243 Settlements (2) (47) (97) (105) (180) Changes in fair value during the period recognized in earnings (3) (66) 67 140 (171) Ending balance $902 $89 $902 $89 Three Months Ended June 30, 2020 Six Months Ended June 30, 2020 (in millions) Mortgage Servicing Rights Other Derivative Contracts Mortgage Servicing Rights Other Derivative Contracts Beginning balance $577 $143 $642 $19 Transfers upon election of fair value method (1) — — 190 — Beginning balance, adjusted 577 143 832 19 Issuances 86 234 153 405 Settlements (2) (46) (344) (86) (420) Changes in fair value during the period recognized in earnings (3) (49) 140 (331) 169 Ending balance $568 $173 $568 $173 (1) Effective January 1, 2020, the Company elected to account for all MSRs previously accounted for under the amortization method under the fair value method. (2) Represents changes in value of the MSRs due to i) passage of time including the impact from both regularly scheduled loan principal payments and partial paydowns, and ii) loans that paid off during the period. (3) Represents changes in value primarily driven by market conditions. These changes are recorded in mortgage banking fees in the Consolidated Statements of Operations. The following table presents quantitative information about the Company’s Level 3 assets, including the range and weighted-average of the significant unobservable inputs used to fair value these assets, as well as valuation techniques used. As of June 30, 2021 Valuation Technique Unobservable Input Range (Weighted Average) Mortgage servicing rights Discounted Cash Flow Constant prepayment rate 10.56-29.54% CPR (11.9% CPR) Option adjusted spread (1490)-1,060 bps (581 bps) Other derivative contracts Internal Model Pull through rate 10.38-99.90% (81.66%) MSR value (0.21)-154.76 bps (99.01 bps) Nonrecurring Fair Value Measurements Fair value is also used on a nonrecurring basis to evaluate certain assets for impairment or for disclosure purposes. For more information on the valuation techniques utilized to measure nonrecurring fair value see Note 19 in the Company’s 2020 Form 10-K. The following table presents losses on assets measured at fair value on a nonrecurring basis and recorded in earnings: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Collateral-dependent loans $— ($22) ($19) ($44) The following table presents assets measured at fair value on a nonrecurring basis: June 30, 2021 December 31, 2020 (in millions) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Collateral-dependent loans $620 $— $620 $— $758 $— $758 $— The following tables present the estimated fair value for financial instruments not recorded at fair value in the unaudited interim Consolidated Financial Statements. The carrying amounts are recorded in the Consolidated Balance Sheets under the indicated captions: June 30, 2021 Total Level 1 Level 2 Level 3 (in millions) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Debt securities held to maturity $2,711 $2,790 $— $— $1,887 $1,964 $824 $826 Other loans held for sale 82 82 — — — — 82 82 Loans and leases 122,581 123,022 — — 620 620 121,961 122,402 Other assets 602 602 — — 594 594 8 8 Financial liabilities: Deposits 150,636 150,658 — — 150,636 150,658 — — Short-term borrowed funds 62 62 — — 62 62 — — Long-term borrowed funds 6,957 7,307 — — 6,957 7,307 — — December 31, 2020 Total Level 1 Level 2 Level 3 (in millions) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Debt securities held to maturity $3,235 $3,357 $— $— $2,342 $2,464 $893 $893 Other loans held for sale 439 439 — — — — 439 439 Loans and leases 123,090 123,678 — — 758 758 122,332 122,920 Other assets 604 604 — — 596 596 8 8 Financial liabilities: Deposits 147,164 147,223 — — 147,164 147,223 — — Short-term borrowed funds 243 243 — — 243 243 — — Long-term borrowed funds 8,346 8,850 — — 8,346 8,850 — —

NONINTEREST INCOME

NONINTEREST INCOME	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
NONINTEREST INCOME	NOTE 13 - NONINTEREST INCOME Revenues from Contracts with Customers The following table presents the components of revenue from contracts with customers disaggregated by revenue stream and business operating segment: Three Months Ended June 30, 2021 Three Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Consumer Banking Commercial Banking Other Consolidated Service charges and fees $74 $26 $— $100 $59 $25 $— $84 Card fees 56 8 — 64 42 7 — 49 Capital markets fees — 84 — 84 — 48 — 48 Trust and investment services fees 60 — — 60 45 — — 45 Other banking fees — 2 — 2 — 1 — 1 Total revenue from contracts with customers $190 $120 $— $310 $146 $81 $— $227 Total revenue from other sources (1) 93 58 24 175 282 63 18 363 Total noninterest income $283 $178 $24 $485 $428 $144 $18 $590 Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Consumer Banking Commercial Banking Other Consolidated Service charges and fees $148 $51 $— $199 $151 $51 $— $202 Card fees 103 15 — 118 87 17 — 104 Capital markets fees — 156 — 156 — 113 — 113 Trust and investment services fees 118 — — 118 98 — — 98 Other banking fees — 4 — 4 — 4 — 4 Total revenue from contracts with customers $369 $226 $— $595 $336 $185 $— $521 Total revenue from other sources (1) 265 122 45 432 449 84 33 566 Total noninterest income $634 $348 $45 $1,027 $785 $269 $33 $1,087 (1) Revenue from other sources includes bank-owned life insurance income of $16 million and $14 million for the three months ended June 30, 2021 and 2020, respectively, and $30 million and $28 million for the six months ended June 30, 2021 and 2020, respectively. Bank-owned life insurance income is included in other income in the consolidated statements of operations.

OTHER OPERATING EXPENSE

OTHER OPERATING EXPENSE	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
OTHER OPERATING EXPENSE	NOTE 14 - OTHER OPERATING EXPENSE The following table presents the details of other operating expense: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Marketing $31 $27 $50 $51 Other 62 84 134 171 Other operating expense $93 $111 $184 $222

EARNINGS PER SHARE

EARNINGS PER SHARE	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
EARNINGS PER SHARE	NOTE 15 - EARNINGS PER SHARE Three Months Ended June 30, Six Months Ended June 30, (in millions, except share and per share data) 2021 2020 2021 2020 Numerator (basic and diluted): Net income $648 $253 $1,259 $287 Less: Preferred stock dividends 32 28 55 50 Net income available to common stockholders $616 $225 $1,204 $237 Denominator: Weighted-average common shares outstanding - basic 425,948,706 426,613,053 425,951,197 427,165,737 Dilutive common shares: share-based awards 1,612,866 953,867 1,717,045 1,126,843 Weighted-average common shares outstanding - diluted 427,561,572 427,566,920 427,668,242 428,292,580 Earnings per common share: Basic $1.45 $0.53 $2.83 $0.56 Diluted (1) 1.44 0.53 2.81 0.55 (1) Potential dilutive common shares are excluded from the computation of diluted EPS in the periods where the effect would be antidilutive. Excluded from the computation of diluted EPS were weighted average antidilutive shares totaling 76,984 and 1,579,361 for the three months ended June 30, 2021 and 2020, respectively, and 43,877 and 1,211,751 for the six months ended June 30, 2021 and 2020, respectively.

BUSINESS OPERATING SEGMENTS

BUSINESS OPERATING SEGMENTS	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
BUSINESS OPERATING SEGMENTS	NOTE 16 - BUSINESS OPERATING SEGMENTS Citizens is managed by its Chief Executive Officer on a segment basis. The Company’s two business operating segments are Consumer Banking and Commercial Banking. The business segments are determined based on the products and services provided, or the type of customer served. Each segment has a segment head who reports directly to the Chief Executive Officer. The Chief Executive Officer has final authority over resource allocation decisions and performance assessment. The business segments reflect this management structure and the manner in which financial information is currently evaluated by the Chief Executive Officer. For more information on the Company’s business operating segments, as well as Other non-segment operations, see Note 25 in the Company’s 2020 Form 10-K. As of and for the Three Months Ended June 30, 2021 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $897 $419 ($192) $1,124 Noninterest income 283 178 24 485 Total revenue 1,180 597 (168) 1,609 Noninterest expense 751 226 14 991 Profit (loss) before provision for credit losses 429 371 (182) 618 Provision for credit losses 45 34 (292) (213) Income (loss) before income tax expense (benefit) 384 337 110 831 Income tax expense (benefit) 98 72 13 183 Net income (loss) $286 $265 $97 $648 Total average assets $75,600 $57,527 $51,329 $184,456 As of and for the Three Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $814 $419 ($73) $1,160 Noninterest income 428 144 18 590 Total revenue 1,242 563 (55) 1,750 Noninterest expense 735 213 31 979 Profit (loss) before provision for credit losses 507 350 (86) 771 Provision for credit losses 80 70 314 464 Income (loss) before income tax expense (benefit) 427 280 (400) 307 Income tax expense (benefit) 107 59 (112) 54 Net income (loss) $320 $221 ($288) $253 Total average assets $71,634 $65,280 $42,879 $179,793 As of and for the Six Months Ended June 30, 2021 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $1,760 $840 ($359) $2,241 Noninterest income 634 348 45 1,027 Total revenue 2,394 1,188 (314) 3,268 Noninterest expense 1,501 453 55 2,009 Profit (loss) before provision for credit losses 893 735 (369) 1,259 Provision for credit losses 104 135 (592) (353) Income (loss) before income tax expense (benefit) 789 600 223 1,612 Income tax expense (benefit) 201 124 28 353 Net income (loss) $588 $476 $195 $1,259 Total average assets $75,443 $57,632 $50,443 $183,518 As of and for the Six Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $1,607 $784 ($71) $2,320 Noninterest income 785 269 33 1,087 Total revenue 2,392 1,053 (38) 3,407 Noninterest expense 1,473 434 84 1,991 Profit (loss) before provision for credit losses 919 619 (122) 1,416 Provision for credit losses 177 113 774 1,064 Income (loss) before income tax expense (benefit) 742 506 (896) 352 Income tax expense (benefit) 186 106 (227) 65 Net income (loss) $556 $400 ($669) $287 Total average assets $70,024 $62,142 $41,319 $173,485 There have been no significant changes in the management accounting practices utilized by the Company regarding the basis of presentation for segment results as discussed in Note 25 in the Company’s 2020 Form 10-K.

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	NOTE 17 - SUBSEQUENT EVENTS On July 28, 2021 Citizens entered into the Investors acquisition agreement under which Citizens will acquire Investors for approximately $3.5 billion, with the transaction value based on Citizen’s closing price of $44.32 per common share as of July 27, 2021. Upon closing of the transaction, Investors’ stockholders will receive a combination of stock and cash, specifically 0.297 of a share of the Company’s common stock and $1.46 in cash for each share of Investors common stock they own. The Investors acquisition agreement provides that at the closing Investors will merge with and into Citizens, with Citizens surviving, and its subsidiary bank, Investors Bank, will merge with and into CBNA, with CBNA surviving. Following completion of the transaction, Investors’ stockholders are expected to own approximately 14% of the combined company’s outstanding shares.

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The unaudited interim Consolidated Financial Statements, including the Notes presented in this document of Citizens Financial Group, Inc., have been prepared in accordance with GAAP interim reporting requirements, and therefore do not include all information and Notes included in the audited Consolidated Financial Statements in conformity with GAAP. These unaudited interim Consolidated Financial Statements and Notes presented in this document should be read in conjunction with the Company’s audited Consolidated Financial Statements and accompanying Notes included in the Company’s 2020 Form 10-K. The Company’s principal business activity is banking, conducted through its banking subsidiary, CBNA.
Consolidation	The unaudited interim Consolidated Financial Statements include the accounts of the Company and subsidiaries in which the Company has a controlling financial interest. All intercompany transactions and balances have been eliminated. The Company has evaluated its unconsolidated entities and does not believe that any entity in which it has an interest, but does not currently consolidate, meets the requirements to be consolidated as a variable interest entity. The unaudited interim Consolidated Financial Statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair presentation of the results for the interim periods. The results for interim periods are not necessarily indicative of results for a full year.
Use of Estimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near-term relate to the determination of the ACL.

SECURITIES (Tables)

SECURITIES (Tables)	6 Months Ended
	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of securities held	The following table presents the major components of securities at amortized cost and fair value: June 30, 2021 December 31, 2020 (in millions) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value U.S. Treasury and other $11 $— $— $11 $11 $— $— $11 State and political subdivisions 3 — — 3 3 — — 3 Mortgage-backed securities, at fair value: Federal agencies and U.S. government sponsored entities 23,960 354 (202) 24,112 21,954 571 (19) 22,506 Other/non-agency 267 13 — 280 396 26 — 422 Total mortgage-backed securities, at fair value 24,227 367 (202) 24,392 22,350 597 (19) 22,928 Collateralized loan obligations, at fair value 177 — — 177 — — — — Total debt securities available for sale, at fair value $24,418 $367 ($202) $24,583 $22,364 $597 ($19) $22,942 Federal agencies and U.S. government sponsored entities $1,887 $77 $— $1,964 $2,342 $122 $— $2,464 Total mortgage-backed securities, at cost 1,887 77 — 1,964 2,342 122 — 2,464 Asset-backed securities, at cost 824 2 — 826 893 — — 893 Total debt securities held to maturity $2,711 $79 $— $2,790 $3,235 $122 $— $3,357 Equity securities, at cost $602 $— $— $602 $604 $— $— $604 Equity securities, at fair value 80 — — 80 66 — — 66
Schedule of investments classified by maturity date	The following table presents the amortized cost and fair value of debt securities by contractual maturity as of June 30, 2021. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without incurring penalties. June 30, 2021 Distribution of Maturities (in millions) 1 Year or Less After 1 Year through 5 Years After 5 Years through 10 Years After 10 Years Total Amortized cost: U.S. Treasury and other $11 $— $— $— $11 State and political subdivisions — — — 3 3 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities 6 42 1,861 22,051 23,960 Other/non-agency — — — 267 267 Collateralized loan obligations — — — 177 177 Total debt securities available for sale 17 42 1,861 22,498 24,418 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities — — — 1,887 1,887 Asset-backed securities — — 824 — 824 Total debt securities held to maturity — — 824 1,887 2,711 Total amortized cost of debt securities $17 $42 $2,685 $24,385 $27,129 Fair value: U.S. Treasury and other $11 $— $— $— $11 State and political subdivisions — — — 3 3 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities 6 44 1,916 22,146 24,112 Other/non-agency — — — 280 280 Collateralized loan obligations — — — 177 177 Total debt securities available for sale 17 44 1,916 22,606 24,583 Mortgage-backed securities: Federal agencies and U.S. government sponsored entities — — — 1,964 1,964 Asset-backed securities — — 826 — 826 Total debt securities held to maturity — — 826 1,964 2,790 Total fair value of debt securities $17 $44 $2,742 $24,570 $27,373
Schedule of income recognized on investment securities	The following table presents realized gains and losses on securities: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Gains on sale of debt securities $3 $3 $6 $3 Losses on sale of debt securities — — — — Debt securities gains, net $3 $3 $6 $3
Schedule of financial instruments owned and pledged as collateral	The following table presents the amortized cost and fair value of debt securities pledged: June 30, 2021 December 31, 2020 (in millions) Amortized Cost Fair Value Amortized Cost Fair Value Pledged against derivatives, to qualify for fiduciary powers, and to secure public and other deposits as required by law $4,996 $5,028 $3,818 $3,937 Pledged against FHLB borrowed funds 266 280 394 423 Pledged against repurchase agreements 49 52 224 231
Schedule of unrealized loss on investments	The following tables present AFS mortgage-backed debt securities with fair values below their respective carrying values, separated by the duration the securities have been in a continuous unrealized loss position: June 30, 2021 Less than 12 Months 12 Months or Longer Total (dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Federal agencies and U.S. government sponsored entities $10,916 ($200) $92 ($2) $11,008 ($202) December 31, 2020 Less than 12 Months 12 Months or Longer Total (dollars in millions) Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Federal agencies and U.S. government sponsored entities $1,991 ($19) $— $— $1,991 ($19)

LOANS AND LEASES (Tables)

LOANS AND LEASES (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Schedule of loans and leases	The following table presents loans and leases, excluding LHFS. (in millions) June 30, 2021 December 31, 2020 Commercial and industrial (1) $42,842 $44,173 Commercial real estate 14,412 14,652 Leases 1,829 1,968 Total commercial 59,083 60,793 Residential mortgages (2) 20,538 19,539 Home equity 11,841 12,149 Automobile 12,780 12,153 Education 12,800 12,308 Other retail 5,539 6,148 Total retail 63,498 62,297 Total loans and leases $122,581 $123,090 (1) Includes $3.5 billion and $4.2 billion of PPP loans fully guaranteed by the SBA as of June 30, 2021 and December 31, 2020, respectively. (2) Includes fully or partially guaranteed FHA, VA and USDA loans of $1.4 billion at June 30, 2021 and $249 million at December 31, 2020, including loans acquired through an exercise of the GNMA early buyout option. June 30, 2021 December 31, 2020 (in millions) Residential Mortgages (1) Commercial (2) Total Residential Mortgages (1) Commercial (2) Total Loans held for sale at fair value $3,499 $117 $3,616 $3,416 $148 $3,564 Other loans held for sale — 82 82 — 439 439 (1) Residential mortgage LHFS are originated for sale. (2) Commercial LHFS at fair value consist of loans managed by the Company’s commercial secondary loan desk. Other commercial LHFS generally consist of loans associated with the Company’s syndication business.

ALLOWANCE FOR CREDIT LOSSES, _2

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Schedule of changes in the allowance for credit losses	The following table presents a summary of changes in the ALLL and the allowance for unfunded lending commitments for the three months ended and six months ended June 30, 2021: Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 (in millions) Commercial Retail Total Commercial Retail Total Allowance for loan and lease losses, beginning of period $1,146 $1,048 $2,194 $1,233 $1,210 $2,443 Charge-offs (45) (80) (125) (179) (173) (352) Recoveries 4 43 47 34 82 116 Net charge-offs (41) (37) (78) (145) (91) (236) Provision charged to income (152) (17) (169) (135) (125) (260) Allowance for loan and lease losses, end of period $953 $994 $1,947 $953 $994 $1,947 Allowance for unfunded lending commitments, beginning of period $165 $13 $178 $186 $41 $227 Provision for unfunded lending commitments (44) — (44) (65) (28) (93) Allowance for unfunded lending commitments, end of period $121 $13 $134 $121 $13 $134 The following table presents a summary of changes in the ALLL and the allowance for unfunded lending commitments for the three months and six months ended June 30, 2020: Three Months Ended June 30, 2020 Six Months Ended June 30, 2020 (in millions) Commercial Retail Total Commercial Retail Total Allowance for loan and lease losses, beginning of period $752 $1,419 $2,171 $674 $578 $1,252 Cumulative effect of change in accounting principle — — — (176) 629 453 Allowance for loan and lease losses, beginning of period, adjusted 752 1,419 2,171 498 1,207 1,705 Charge-offs (74) (106) (180) (121) (233) (354) Recoveries 3 30 33 6 64 70 Net charge-offs (71) (76) (147) (115) (169) (284) Provision charged to income 554 (130) 424 852 175 1,027 Allowance for loan and lease losses, end of period $1,235 $1,213 $2,448 $1,235 $1,213 $2,448 Allowance for unfunded lending commitments, beginning of period $38 $1 $39 $44 $— $44 Cumulative effect of change in accounting principle — — — (3) 1 (2) Allowance for unfunded lending commitments, beginning of period, adjusted 38 1 39 41 1 42 Provision for unfunded lending commitments 31 9 40 28 9 37 Allowance for unfunded lending commitments, end of period $69 $10 $79 $69 $10 $79
Schedule of classes of loans and leases, amortized cost basis by credit quality indicator	The following table presents the amortized cost basis of commercial loans and leases, by vintage date and regulatory classification rating, as of June 30, 2021: Term Loans by Origination Year Revolving Loans (in millions) 2021 2020 2019 2018 2017 Prior to 2017 Within the Revolving Period Converted to Term Total Commercial and industrial Pass (1) $5,146 $5,140 $5,260 $3,623 $1,975 $2,797 $15,853 $151 $39,945 Special Mention 3 41 196 196 74 181 454 — 1,145 Substandard 32 125 263 267 114 226 583 21 1,631 Doubtful 27 16 16 22 12 18 7 3 121 Total commercial and industrial 5,208 5,322 5,735 4,108 2,175 3,222 16,897 175 42,842 Commercial real estate Pass 462 2,572 3,726 3,013 1,026 1,507 809 — 13,115 Special Mention 73 7 193 102 155 122 14 — 666 Substandard 1 39 210 135 146 73 — — 604 Doubtful — 9 16 — — 2 — — 27 Total commercial real estate 536 2,627 4,145 3,250 1,327 1,704 823 — 14,412 Leases Pass 269 368 216 203 98 622 — — 1,776 Special Mention 1 2 1 2 5 18 — — 29 Substandard — 16 5 1 — 1 — — 23 Doubtful — — — — — 1 — — 1 Total leases 270 386 222 206 103 642 — — 1,829 Total commercial Pass (1) 5,877 8,080 9,202 6,839 3,099 4,926 16,662 151 54,836 Special Mention 77 50 390 300 234 321 468 — 1,840 Substandard 33 180 478 403 260 300 583 21 2,258 Doubtful 27 25 32 22 12 21 7 3 149 Total commercial $6,014 $8,335 $10,102 $7,564 $3,605 $5,568 $17,720 $175 $59,083 (1) Includes $3.5 billion of PPP loans designated as pass that are fully guaranteed by the SBA originating in 2021 and 2020. The following table presents the amortized cost basis of commercial loans and leases, by vintage date and regulatory classification rating, as of December 31, 2020: Term Loans by Origination Year Revolving Loans (in millions) 2020 2019 2018 2017 2016 Prior to 2016 Within the Revolving Period Converted to Term Total Commercial and industrial Pass (1) $8,036 $5,730 $4,180 $2,174 $1,157 $1,980 $17,281 $340 $40,878 Special Mention 34 264 163 84 60 173 771 34 1,583 Substandard 91 195 248 100 81 127 600 22 1,464 Doubtful 65 10 34 38 3 31 63 4 248 Total commercial and industrial 8,226 6,199 4,625 2,396 1,301 2,311 18,715 400 44,173 Commercial real estate Pass 1,848 2,836 2,810 1,106 566 919 3,271 — 13,356 Special Mention 19 130 121 92 94 48 300 — 804 Substandard 116 2 65 5 53 26 149 — 416 Doubtful 16 26 8 — — 2 24 — 76 Total commercial real estate 1,999 2,994 3,004 1,203 713 995 3,744 — 14,652 Leases Pass 455 246 229 139 180 673 — — 1,922 Special Mention 3 4 2 4 2 18 — — 33 Substandard — 2 2 4 4 — — — 12 Doubtful — — — — — 1 — — 1 Total leases 458 252 233 147 186 692 — — 1,968 Total commercial Pass (1) 10,339 8,812 7,219 3,419 1,903 3,572 20,552 340 56,156 Special Mention 56 398 286 180 156 239 1,071 34 2,420 Substandard 207 199 315 109 138 153 749 22 1,892 Doubtful 81 36 42 38 3 34 87 4 325 Total commercial $10,683 $9,445 $7,862 $3,746 $2,200 $3,998 $22,459 $400 $60,793 (1) Includes $4.2 billion PPP loans designated as pass that are fully guaranteed by the SBA originating in 2020. For retail loans, Citizens utilizes FICO credit scores and the loan’s payment and delinquency status to monitor credit quality. Management believes FICO scores are the strongest indicator of credit losses over the contractual life of the loan and assist management in predicting the borrower’s future payment performance. Scores are based on current and historical national industry-wide consumer level credit performance data. The following table presents the amortized cost basis of retail loans, by vintage date and FICO scores, as of June 30, 2021: Term Loans by Origination Year Revolving Loans (in millions) 2021 2020 2019 2018 2017 Prior to 2017 Within the Revolving Period Converted to Term Total Residential mortgages 800+ $851 $3,079 $1,574 $454 $897 $2,697 $— $— $9,552 740-799 1,619 2,261 890 311 448 1,335 — — 6,864 680-739 377 653 360 178 169 660 — — 2,397 620-679 42 112 180 103 117 328 — — 882 <620 2 49 153 162 167 293 — — 826 No FICO available (1) 2 3 1 — — 11 — — 17 Total residential mortgages 2,893 6,157 3,158 1,208 1,798 5,324 — — 20,538 Home equity 800+ 1 2 6 6 5 170 4,292 318 4,800 740-799 — 1 5 6 6 146 3,333 306 3,803 680-739 — 1 8 13 18 162 1,608 274 2,084 620-679 — 3 13 24 20 133 336 182 711 <620 — 3 20 25 23 106 79 187 443 No FICO available (1) — — — — — — — — — Total home equity 1 10 52 74 72 717 9,648 1,267 11,841 Automobile 800+ 756 951 681 333 223 122 — — 3,066 740-799 1,096 1,320 813 401 242 122 — — 3,994 680-739 969 1,109 690 335 190 98 — — 3,391 620-679 458 506 345 184 108 63 — — 1,664 <620 59 138 180 133 90 61 — — 661 No FICO available (1) 3 — — — — 1 — — 4 Total automobile 3,341 4,024 2,709 1,386 853 467 — — 12,780 Education 800+ 564 1,843 1,103 662 590 1,066 — — 5,828 740-799 759 1,831 892 480 338 614 — — 4,914 680-739 204 536 289 172 123 300 — — 1,624 620-679 14 54 45 37 29 110 — — 289 <620 1 6 10 12 10 49 — — 88 No FICO available (1) 2 — — — — 55 — — 57 Total education 1,544 4,270 2,339 1,363 1,090 2,194 — — 12,800 Other retail 800+ 107 343 209 100 48 42 357 — 1,206 740-799 169 479 285 128 58 36 662 2 1,819 680-739 150 372 190 85 37 18 593 5 1,450 620-679 94 181 65 28 10 6 208 6 598 <620 11 39 23 13 4 2 66 7 165 No FICO available (1) 6 8 — — — — 285 2 301 Total other retail 537 1,422 772 354 157 104 2,171 22 5,539 Total retail 800+ 2,279 6,218 3,573 1,555 1,763 4,097 4,649 318 24,452 740-799 3,643 5,892 2,885 1,326 1,092 2,253 3,995 308 21,394 680-739 1,700 2,671 1,537 783 537 1,238 2,201 279 10,946 620-679 608 856 648 376 284 640 544 188 4,144 <620 73 235 386 345 294 511 145 194 2,183 No FICO available (1) 13 11 1 — — 67 285 2 379 Total retail $8,316 $15,883 $9,030 $4,385 $3,970 $8,806 $11,819 $1,289 $63,498 (1) Represents loans for which an updated FICO score was unavailable (e.g., due to recent profile changes). The following table presents the amortized cost basis of retail loans, by vintage date and FICO scores, as of December 31, 2020: Term Loans by Origination Year Revolving Loans (in millions) 2020 2019 2018 2017 2016 Prior to 2016 Within the Revolving Period Converted to Term Total Residential mortgages 800+ $2,687 $1,885 $638 $1,129 $1,615 $1,755 $— $— $9,709 740-799 2,931 1,133 398 527 743 904 — — 6,636 680-739 784 351 162 172 295 458 — — 2,222 620-679 97 94 44 56 66 223 — — 580 <620 12 28 35 58 50 185 — — 368 No FICO available (1) 1 2 1 5 1 14 — — 24 Total residential mortgages 6,512 3,493 1,278 1,947 2,770 3,539 — — 19,539 Home equity 800+ 2 8 10 7 5 216 4,319 344 4,911 740-799 2 6 7 6 5 180 3,234 331 3,771 680-739 1 6 10 15 8 179 1,632 284 2,135 620-679 — 10 18 21 14 136 402 195 796 <620 1 17 30 29 18 122 105 214 536 Total home equity 6 47 75 78 50 833 9,692 1,368 12,149 Automobile 800+ 1,056 812 424 312 169 62 — — 2,835 740-799 1,514 1,022 531 344 172 59 — — 3,642 680-739 1,347 889 461 282 138 47 — — 3,164 620-679 669 484 259 157 84 32 — — 1,685 <620 140 242 189 137 79 34 — — 821 No FICO available (1) 2 — — — — 4 — — 6 Total automobile 4,728 3,449 1,864 1,232 642 238 — — 12,153 Education 800+ 1,817 1,363 849 781 578 777 — — 6,165 740-799 1,797 1,009 541 387 251 423 — — 4,408 680-739 450 294 173 127 90 221 — — 1,355 620-679 26 35 33 28 25 95 — — 242 <620 2 5 10 10 8 41 — — 76 No FICO available (1) 2 — — — — 60 — — 62 Total education 4,094 2,706 1,606 1,333 952 1,617 — — 12,308 Other retail 800+ 461 380 163 77 15 44 341 — 1,481 740-799 620 460 184 81 19 31 638 2 2,035 680-739 495 302 111 48 10 13 561 5 1,545 620-679 248 104 37 14 3 5 174 7 592 <620 24 30 17 6 1 3 77 8 166 No FICO available (1) 54 1 — — — — 272 2 329 Total other retail 1,902 1,277 512 226 48 96 2,063 24 6,148 Total retail 800+ 6,023 4,448 2,084 2,306 2,382 2,854 4,660 344 25,101 740-799 6,864 3,630 1,661 1,345 1,190 1,597 3,872 333 20,492 680-739 3,077 1,842 917 644 541 918 2,193 289 10,421 620-679 1,040 727 391 276 192 491 576 202 3,895 <620 179 322 281 240 156 385 182 222 1,967 No FICO available (1) 59 3 1 5 1 78 272 2 421 Total retail $17,242 $10,972 $5,335 $4,816 $4,462 $6,323 $11,755 $1,392 $62,297 (1) Represents loans for which an updated FICO score was unavailable (e.g., due to recent profile changes).
Schedule of nonaccrual loans and leases and loans accruing and 90 days or more past due	The following table presents nonaccrual loans and leases and loans accruing and 90 days or more past due: As of June 30, 2021 As of December 31, 2020 (in millions) Nonaccrual loans and leases 90+ days past due and accruing Nonaccrual with no related ACL Nonaccrual loans and leases 90+ days past due and accruing Nonaccrual with no related ACL Commercial and industrial $163 $— $40 $280 $20 $56 Commercial real estate 102 — 37 176 — 2 Leases 1 1 — 2 1 — Total commercial 266 1 77 458 21 58 Residential mortgages (1) 174 270 138 167 30 96 Home equity 234 — 189 276 — 207 Automobile 62 — 34 72 — 17 Education 21 2 2 18 2 2 Other retail 22 7 2 28 9 — Total retail 513 279 365 561 41 322 Total loans and leases $779 $280 $442 $1,019 $62 $380
Schedule of accruing and nonaccruing past due amounts	The following table presents an analysis of the age of both accruing and nonaccruing loan and lease past due amounts: June 30, 2021 December 31, 2020 Days Past Due Days Past Due (in millions) Current-29 30-59 60-89 90+ Total Current-29 30-59 60-89 90+ Total Commercial and industrial $42,769 $24 $7 $42 $42,842 $43,817 $223 $16 $117 $44,173 Commercial real estate 14,310 1 — 101 14,412 14,531 1 85 35 14,652 Leases 1,827 — — 2 1,829 1,956 9 — 3 1,968 Total commercial 58,906 25 7 145 59,083 60,304 233 101 155 60,793 Residential mortgages (1) 19,885 176 61 416 20,538 19,291 59 21 168 19,539 Home equity 11,607 32 17 185 11,841 11,848 61 28 212 12,149 Automobile 12,613 114 43 10 12,780 11,901 170 65 17 12,153 Education 12,747 29 13 11 12,800 12,255 33 13 7 12,308 Other retail 5,454 37 20 28 5,539 6,047 38 29 34 6,148 Total retail 62,306 388 154 650 63,498 61,342 361 156 438 62,297 Total $121,212 $413 $161 $795 $122,581 $121,646 $594 $257 $593 $123,090 (1) 90+ days past due includes $266 million and $44 million of loans fully or partially guaranteed by the FHA, VA, and USDA at June 30, 2021 and December 31, 2020, respectively.
Troubled debt restructurings on financing receivables	The following tables summarize loans modified during the three and six months ended June 30, 2021 and June 30, 2020. The balances represent the post-modification outstanding amortized cost basis and may include loans that became TDRs during the period and were subsequently paid off in full, charged off, or sold prior to period end. Pre-modification balances for modified loans approximate the post-modification balances shown. Three Months Ended June 30, 2021 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 15 $— $3 $54 $57 Commercial real estate — — — — — Total commercial 15 — 3 54 57 Residential mortgages 671 8 120 44 172 Home equity 102 1 3 3 7 Automobile 379 1 — 5 6 Education 265 — — 9 9 Other retail 585 1 — — 1 Total retail 2,002 11 123 61 195 Total 2,017 $11 $126 $115 $252 Three Months Ended June 30, 2020 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 19 $— $3 $53 $56 Commercial real estate — — — — — Total commercial 19 — 3 53 56 Residential mortgages 145 11 14 3 28 Home equity 266 2 4 11 17 Automobile 947 — — 15 15 Education 142 — — 4 4 Other retail 710 3 — 1 4 Total retail 2,210 16 18 34 68 Total 2,229 $16 $21 $87 $124 Six Months Ended June 30, 2021 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 22 $— $6 $54 $60 Commercial real estate — — — — — Total commercial 22 — 6 54 60 Residential mortgages 713 12 126 47 185 Home equity 249 3 8 7 18 Automobile 1,048 1 — 13 14 Education 412 — — 13 13 Other retail 1,215 4 — 1 5 Total retail 3,637 20 134 81 235 Total 3,659 $20 $140 $135 $295 Six Months Ended June 30, 2020 Amortized Cost Basis (dollars in millions) Number of Contracts Interest Rate Reduction (1) Maturity Extension (2) Other (3) Total Commercial and industrial 38 $— $3 $94 $97 Commercial real estate — — — — — Total commercial 38 — 3 94 97 Residential mortgages 241 17 21 7 45 Home equity 389 6 4 15 25 Automobile 1,177 1 — 17 18 Education 233 — — 6 6 Other retail 1,683 7 — 2 9 Total retail 3,723 31 25 47 103 Total 3,761 $31 $28 $141 $200 (1) Includes modifications that consist of multiple concessions, one of which is an interest rate reduction. (2) Includes modifications that consist of multiple concessions, one of which is a maturity extension (unless one of the other concessions was an interest rate reduction). (3) Includes modifications other than interest rate reductions or maturity extensions, such as lowering scheduled payments for a specified period of time, principal forgiveness, and capitalizing arrearages. Also included are the following: deferrals, trial modifications, certain bankruptcies, loans in forbearance and prepayment plans. Modifications can include the deferral of accrued interest resulting in post-modification balances being higher than pre-modification.
Schedule of loans that may increase credit exposure	The following tables present balances of loans with these characteristics: June 30, 2021 (in millions) Residential Mortgages Home Equity Other Retail Education Total High loan-to-value $235 $27 $— $— $262 Interest-only 3,143 — — 1 3,144 Low introductory rate — — 135 — 135 Total $3,378 $27 $135 $1 $3,541 December 31, 2020 (in millions) Residential Mortgages Home Equity Other Retail Education Total High loan-to-value $289 $64 $— $— $353 Interest-only 2,801 — — — 2,801 Low introductory rate — — 170 — 170 Total $3,090 $64 $170 $1 $3,324

MORTGAGE BANKING AND OTHER (Tab

MORTGAGE BANKING AND OTHER (Tables)	6 Months Ended
	Jun. 30, 2021
Mortgage Banking [Abstract]
Schedule of mortgage banking activities	The following table summarizes activity related to residential mortgage loans sold with servicing rights retained: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Cash proceeds from residential mortgage loans sold with servicing retained $10,540 $8,797 $19,577 $14,164 Gain on sales (1) 85 283 225 426 Contractually specified servicing, late and other ancillary fees (1) 60 55 118 113 (1) Reported in mortgage banking fees in the Consolidated Statements of Operations.
Servicing asset at fair value	The following table summarizes changes in MSRs recorded using the fair value method: As of and for the Three Months Ended June 30, As of and for the Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Fair value as of beginning of the period $893 $577 $658 $642 Transfers upon election of fair value method (1) — — — 190 Fair value as of beginning of the period, adjusted 893 577 658 832 Amounts capitalized 122 86 209 153 Changes in unpaid principal balance during the period (2) (47) (46) (105) (86) Changes in fair value during the period (3) (66) (49) 140 (331) Fair value at end of the period $902 $568 $902 $568 (1) Effective January 1, 2020, the Company elected to account for all MSRs previously accounted for under the amortization method under the fair value method. (2) Represents changes in value of the MSRs due to i) passage of time including the impact from both regularly scheduled loan principal payments and partial paydowns, and ii) loans that paid off during the period. (3) Represents changes in value primarily driven by market conditions. These changes are recorded in mortgage banking fees in the Consolidated Statements of Operations.
Schedule of fair value assumptions used to estimate the value of Mortgage Servicing Rights	June 30, 2021 December 31, 2020 Actual Decline in fair value due to Actual Decline in fair value due to (dollars in millions) Fair value $902 50 bps adverse change 100 bps adverse change $658 50 bps adverse change 100 bps adverse change Weighted average life (in years) 5.7 4.2 Weighted average constant prepayment rate (1) 11.9% $129 $273 17.3% $122 $202 Weighted average option adjusted spread 581 bps 18 36 595 bps 12 24 (1) Estimated adverse change for the weighted average constant prepayment rate based on an adverse change in market interest rates .
Schedule of other serviced loans	The following table presents the unpaid principal balance of other serviced loans: (in millions) June 30, 2021 December 31, 2020 Education $867 $974 Commercial (1) 61 51 (1) Represents the government guaranteed portion of SBA loans sold to outside investors.

VARIABLE INTEREST ENTITIES (Tab

VARIABLE INTEREST ENTITIES (Tables)	6 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Schedule of variable interest entities	A summary of these investments is presented below: (in millions) June 30, 2021 December 31, 2020 Lending to special purpose entities included in loans and leases $1,520 $1,295 LIHTC investment included in other assets 1,926 1,687 LIHTC unfunded commitments included in other liabilities 974 875 Investment in asset-backed securities included in HTM securities 826 893 Renewable energy investments included in other assets 448 403
Schedule of affordable housing tax credit investments	The following table presents other information related to the Company’s affordable housing tax credit investments: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Tax credits included in income tax expense $51 $39 $102 $80 Other tax benefits included in income tax expense 13 10 25 20 Total tax benefits included in income tax expense 64 49 127 100 Less: Amortization included in income tax expense 53 42 106 85 Net benefits from affordable housing tax credit investments included in income tax expense $11 $7 $21 $15

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Schedule of long-term borrowed funds	The following table presents a summary of the Company’s long-term borrowed funds: (in millions) June 30, 2021 December 31, 2020 Parent Company: 2.375% fixed-rate senior unsecured debt, due July 2021 (1) $— $350 4.150% fixed-rate subordinated debt, due September 2022 (2) 168 182 3.750% fixed-rate subordinated debt, due July 2024 (2) 90 159 4.023% fixed-rate subordinated debt, due October 2024 (2) 17 25 4.350% fixed-rate subordinated debt, due August 2025 (2) 133 193 4.300% fixed-rate subordinated debt, due December 2025 (2) 336 450 2.850% fixed-rate senior unsecured notes, due July 2026 497 497 2.500% fixed-rate senior unsecured notes, due February 2030 298 297 3.250% fixed-rate senior unsecured notes, due April 2030 745 745 3.750% fixed-rate reset subordinated debt, due February 2031 (2) 69 — 4.300% fixed-rate reset subordinated debt, due February 2031 (2) 135 — 4.350% fixed-rate reset subordinated debt, due February 2031 (2) 60 — 2.638% fixed-rate subordinated debt, due September 2032 547 543 CBNA’s Global Note Program: 2.550% senior unsecured notes, due May 2021 — 1,003 3.250% senior unsecured notes, due February 2022 708 716 0.874% floating-rate senior unsecured notes, due February 2022 (3) 300 299 0.951% floating-rate senior unsecured notes, due May 2022 (3) 250 250 2.650% senior unsecured notes, due May 2022 507 510 3.700% senior unsecured notes, due March 2023 520 527 1.096% floating-rate senior unsecured notes, due March 2023 (3) 250 249 2.250% senior unsecured notes, due April 2025 746 746 3.750% senior unsecured notes, due February 2026 536 551 Additional Borrowings by CBNA and Other Subsidiaries: Federal Home Loan Bank advances, 0.909% weighted average rate, due through 2038 18 19 Other 27 35 Total long-term borrowed funds $6,957 $8,346 (1) Notes were redeemed on June 28, 2021. (2) June 30, 2021 balances reflect the February 2021 completion of $265 million in private exchange offers for five series of outstanding subordinated notes whereby participants received newly issued 3.750%, 4.300%, and 4.350% fixed-rate reset subordinated notes due 2031 which are redeemable by the Company five years prior to their maturity. (3) Rate disclosed reflects the floating rate as of June 30, 2021.
Schedule of maturities of long-term borrowed funds	The following table presents a summary of maturities for the Company’s long-term borrowed funds at June 30, 2021: (in millions) Parent Company CBNA and Other Subsidiaries Consolidated Year 2021 $— $4 $4 2022 168 1,771 1,939 2023 — 771 771 2024 107 — 107 2025 469 760 1,229 2026 and thereafter 2,351 556 2,907 Total $3,095 $3,862 $6,957

DERIVATIVES (Tables)

DERIVATIVES (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of derivative instruments in consolidated balance sheets	The following table presents derivative instruments included in the Consolidated Balance Sheets: June 30, 2021 December 31, 2020 (in millions) Notional Amount (1) Derivative Assets Derivative Liabilities Notional Amount (1) Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate contracts $25,300 $16 $7 $22,300 $1 $3 Derivatives not designated as hedging instruments: Interest rate contracts 144,982 1,118 190 149,021 1,565 214 Foreign exchange contracts 20,289 273 209 16,789 320 291 Commodities contracts 431 424 427 246 62 61 TBA contracts 10,924 5 28 11,149 8 65 Other contracts 6,717 89 — 8,051 197 — Total derivatives not designated as hedging instruments 1,909 854 2,152 631 Gross derivative fair values 1,925 861 2,153 634 Less: Gross amounts offset in the Consolidated Balance Sheets (2) (207) (207) (182) (182) Less: Cash collateral applied (2) (63) (510) (56) (324) Total net derivative fair values presented in the Consolidated Balance Sheets $1,655 $144 $1,915 $128 (1) The notional or contractual amount of interest rate derivatives and foreign exchange contracts is the amount upon which interest and other payments under the contract are based. For interest rate contracts, the notional amount is typically not exchanged. Therefore, notional amounts should not be taken as the measure of credit or market risk, as they do not measure the true economic risk of these contracts. (2) Amounts represent the impact of enforceable master netting agreements that allow the Company to net settle positive and negative positions as well as collateral paid and received.
Schedule of fair value hedges	The following table presents the change in fair value of interest rate contracts designated as fair value hedges, as well as the change in fair value of the related hedged items attributable to the risk being hedged, included in the Consolidated Statements of Operations: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Affected Line Item in the Consolidated Statements of Operations Interest rate swaps hedging borrowed funds ($10) $5 ($38) $98 Interest expense - long-term borrowed funds Hedged long-term debt attributable to the risk being hedged 9 (3) 37 (95) Interest expense - long-term borrowed funds Interest rate swaps hedging fixed rate loans — — — 17 Interest and fees on loans and leases Hedged fixed rate loans attributable to the risk being hedged — — — (17) Interest and fees on loans and leases Interest rate swaps hedging debt securities available for sale 4 (14) 32 (121) Interest income - investment securities Hedged debt securities available for sale attributable to risk being hedged (4) 14 (32) 121 Interest income - investment securities The following table reflects amounts recorded in the Consolidated Balance Sheets related to cumulative basis adjustments for fair value hedges: June 30, 2021 December 31, 2020 (in millions) Debt securities available for sale (1) Long-term borrowed funds Debt securities available for sale (1) Long-term borrowed funds Carrying amount of hedged assets $8,287 $— $10,869 $— Carrying amount of hedged liabilities — 2,272 — 3,307 Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items 64 76 96 112 (1) The Company designated $2.0 billion as the hedged amount (from a closed portfolio of prepayable financial assets with an amortized cost basis of $8.3 billion and $10.9 billion as of June 30, 2021 and December 31, 2020, respectively) in a last-of-layer hedging relationship, which commenced in the third quarter of 2019.
Schedule of effect of cash flow hedges on net income and stockholders' equity	The following table presents the pre-tax net gains (losses) recorded in the Consolidated Statements of Operations and in the Consolidated Statements of Comprehensive Income relating to derivative instruments designated as cash flow hedges: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Amount of pre-tax net gains (losses) recognized in OCI $62 ($11) $34 $118 Amount of pre-tax net gains (losses) reclassified from OCI into interest income 49 55 95 60 Amount of pre-tax net gains (losses) reclassified from OCI into interest expense (12) (10) (24) (11)
Schedule of effect of derivative Instruments on net income	The following table presents the effect of economic hedges on noninterest income: Amounts Recognized in Three Months Ended June 30, Six Months Ended June 30, Affected Line Item in the Consolidated Statements of Operations (in millions) 2021 2020 2021 2020 Economic hedge type: Customer interest rate contracts $133 $180 ($215) $1,269 Foreign exchange and interest rate products Derivatives hedging interest rate risk (129) (161) 227 (1,246) Foreign exchange and interest rate products Customer foreign exchange contracts 19 23 (97) (7) Foreign exchange and interest rate products Derivatives hedging foreign exchange risk (11) (50) 139 49 Foreign exchange and interest rate products Customer commodity contracts 319 7 413 (56) Foreign exchange and interest rate products Derivatives hedging commodity price risk (317) (7) (409) 57 Foreign exchange and interest rate products Residential loan commitments 67 14 (171) 154 Mortgage banking fees Derivatives hedging residential loan commitments and mortgage loans held for sale, at fair value (141) 110 134 (19) Mortgage banking fees Derivative contracts used to hedge residential MSRs 53 62 (129) 333 Mortgage banking fees Total ($7) $178 ($108) $534

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Schedule of other comprehensive income	The following table presents the changes in the balances, net of income taxes, of each component of AOCI: As of and for the Three Months Ended June 30, (in millions) Net Unrealized Gains (Losses) on Derivatives Net Unrealized Gains (Losses) on Debt Securities Employee Benefit Plans Total AOCI Balance at April 1, 2020 $96 $401 ($412) $85 Other comprehensive income (loss) before reclassifications (8) 49 — 41 Amounts reclassified to the Consolidated Statements of Operations (34) (2) 4 (32) Net other comprehensive income (loss) (42) 47 4 9 Balance at June 30, 2020 $54 $448 ($408) $94 Balance at April 1, 2021 ($57) $71 ($425) ($411) Other comprehensive income (loss) before reclassifications 46 10 — 56 Amounts reclassified to the Consolidated Statements of Operations (27) (3) 4 (26) Net other comprehensive income (loss) 19 7 4 30 Balance at June 30, 2021 ($38) $78 ($421) ($381) Primary location of amounts reclassified to the Consolidated Statements of Operations Net interest income Securities gains, net Other operating expense As of and for the Six Months Ended June 30, (in millions) Net Unrealized Gains (Losses) on Derivatives Net Unrealized Gains (Losses) on Debt Securities Employee Benefit Plans Total AOCI Balance at January 1, 2020 $3 $1 ($415) ($411) Other comprehensive income (loss) before reclassifications 88 449 — 537 Amounts reclassified to the Consolidated Statements of Operations (37) (2) 7 (32) Net other comprehensive income (loss) 51 447 7 505 Balance at June 30, 2020 $54 $448 ($408) $94 Balance at January 1, 2021 ($11) $380 ($429) ($60) Other comprehensive income (loss) before reclassifications 25 (297) — (272) Amounts reclassified to the Consolidated Statements of Operations (52) (5) 8 (49) Net other comprehensive income (loss) (27) (302) 8 (321) Balance at June 30, 2021 ($38) $78 ($421) ($381) Primary location of amounts reclassified to the Consolidated Statements of Operations Net interest income Securities gains, net Other operating expense

STOCKHOLDERS' EQUITY (Tables)

STOCKHOLDERS' EQUITY (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Schedule of preferred stock	The following table summarizes the Company’s preferred stock: June 30, 2021 December 31, 2020 (in millions, except per share and share data) Liquidation value per share Preferred Shares Carrying Amount Preferred Shares Carrying Amount Authorized ($25 par value per share) 100,000,000 100,000,000 Issued and outstanding: Series A $1,000 — $— 250,000 $247 Series B 1,000 300,000 296 300,000 296 Series C 1,000 300,000 297 300,000 297 Series D 1,000 (1) 300,000 (2) 293 300,000 293 Series E 1,000 (1) 450,000 (3) 437 450,000 437 Series F 1,000 400,000 395 400,000 395 Series G 1,000 300,000 296 — — Total 2,050,000 $2,014 2,000,000 $1,965 (1) Equivalent to $25 per depositary share. (2) Represented by 12,000,000 depositary shares each representing a 1/40th interest in the Series D Preferred Stock. (3) Represented by 18,000,000 depositary shares each representing a 1/40th interest in the Series E Preferred Stock.
Schedule of dividends	Three Months Ended June 30, 2021 Three Months Ended June 30, 2020 (in millions, except per share data) Dividends Declared per Share Dividends Declared Dividends Paid Dividends Declared per Share Dividends Declared Dividends Paid Common stock $0.39 $168 $168 $0.39 $168 $168 Preferred stock Series A $10.50 $2 $2 $13.48 $3 $7 Series B 30.00 9 — 30.00 9 — Series C 15.94 5 5 15.94 5 5 Series D 15.88 4 4 15.88 5 5 Series E 12.50 6 6 12.50 6 5 Series F 14.13 6 6 — — — Total preferred stock $32 $23 $28 $22 Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 (in millions, except per share data) Dividends Declared per Share Dividends Declared Dividends Paid Dividends Declared per Share Dividends Declared Dividends Paid Common stock $0.78 $335 $335 $0.78 $336 $336 Preferred stock Series A $20.99 $5 $5 $40.98 $10 $7 Series B 30.00 9 9 30.00 9 9 Series C 31.88 10 10 31.88 10 10 Series D 31.75 9 9 31.75 10 10 Series E 25.00 11 11 25.00 11 9 Series F 28.25 11 11 — — — Total preferred stock $55 $55 $50 $45

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of outstanding off balance sheet arrangements	A summary of outstanding off-balance sheet arrangements is presented below. For more information on these arrangements, see Note 18 in the Company’s 2020 Form 10-K. (in millions) June 30, 2021 December 31, 2020 Commitments to extend credit $76,761 $74,160 Letters of credit 1,926 2,239 Risk participation agreements 68 98 Loans sold with recourse 64 54 Marketing rights 26 29 Total $78,845 $76,580

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair value option	Citizens elected to account for residential mortgage LHFS and certain commercial and industrial, and commercial real estate LHFS at fair value. The following table presents the difference between the aggregate fair value and the aggregate unpaid principal balance of LHFS measured at fair value: June 30, 2021 December 31, 2020 (in millions) Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal Aggregate Fair Value Aggregate Unpaid Principal Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal Residential mortgage loans held for sale, at fair value $3,499 $3,388 $111 $3,416 $3,260 $156 Commercial and industrial, and commercial real estate loans held for sale, at fair value 117 119 (2) 148 153 (5)
Assets and liabilities measured on recurring basis	The following table presents assets and liabilities measured at fair value, including gross derivative assets and liabilities, on a recurring basis at June 30, 2021: (in millions) Total Level 1 Level 2 Level 3 Debt securities available for sale: Mortgage-backed securities $24,392 $— $24,392 $— Collateralized loan obligations 177 — 177 — State and political subdivisions 3 — 3 — U.S. Treasury and other 11 11 — — Total debt securities available for sale 24,583 11 24,572 — Loans held for sale, at fair value: Residential loans held for sale 3,499 — 3,499 — Commercial loans held for sale 117 — 117 — Total loans held for sale, at fair value 3,616 — 3,616 — Mortgage servicing rights 902 — — 902 Derivative assets: Interest rate contracts 1,134 — 1,134 — Foreign exchange contracts 273 — 273 — Commodities contracts 424 — 424 — TBA contracts 5 — 5 — Other contracts 89 — — 89 Total derivative assets 1,925 — 1,836 89 Equity securities, at fair value 80 80 — — Total assets $31,106 $91 $30,024 $991 Derivative liabilities: Interest rate contracts $197 $— $197 $— Foreign exchange contracts 209 — 209 — Commodities contracts 427 — 427 — TBA contracts 28 — 28 — Total derivative liabilities 861 — 861 — Total liabilities $861 $— $861 $— The following table presents assets and liabilities measured at fair value, including gross derivative assets and liabilities, on a recurring basis at December 31, 2020: (in millions) Total Level 1 Level 2 Level 3 Debt securities available for sale: Mortgage-backed securities $22,928 $— $22,928 $— State and political subdivisions 3 — 3 — U.S. Treasury and other 11 11 — — Total debt securities available for sale 22,942 11 22,931 — Loans held for sale, at fair value: Residential loans held for sale 3,416 — 3,416 — Commercial loans held for sale 148 — 148 — Total loans held for sale, at fair value 3,564 — 3,564 — Mortgage servicing rights 658 — — 658 Derivative assets: Interest rate contracts 1,566 — 1,566 — Foreign exchange contracts 320 — 320 — Commodities contracts 62 — 62 — TBA contracts 8 — 8 — Other contracts 197 — — 197 Total derivative assets 2,153 — 1,956 197 Equity securities, at fair value 66 66 — — Total assets $29,383 $77 $28,451 $855 Derivative liabilities: Interest rate contracts $217 $— $217 $— Foreign exchange contracts 291 — 291 — Commodities contracts 61 — 61 — TBA contracts 65 — 65 — Total derivative liabilities 634 — 634 — Total liabilities $634 $— $634 $—
Assets measured at fair value on recurring basis and classified as Level 3	The following tables present a roll forward of the balance sheet amounts for assets measured at fair value on a recurring basis and classified as Level 3: Three Months Ended June 30, 2021 Six Months Ended June 30, 2021 (in millions) Mortgage Servicing Rights Other Derivative Contracts Mortgage Servicing Rights Other Derivative Contracts Beginning balance $893 $38 $658 $197 Issuances 122 81 209 243 Settlements (2) (47) (97) (105) (180) Changes in fair value during the period recognized in earnings (3) (66) 67 140 (171) Ending balance $902 $89 $902 $89 Three Months Ended June 30, 2020 Six Months Ended June 30, 2020 (in millions) Mortgage Servicing Rights Other Derivative Contracts Mortgage Servicing Rights Other Derivative Contracts Beginning balance $577 $143 $642 $19 Transfers upon election of fair value method (1) — — 190 — Beginning balance, adjusted 577 143 832 19 Issuances 86 234 153 405 Settlements (2) (46) (344) (86) (420) Changes in fair value during the period recognized in earnings (3) (49) 140 (331) 169 Ending balance $568 $173 $568 $173 (1) Effective January 1, 2020, the Company elected to account for all MSRs previously accounted for under the amortization method under the fair value method. (2) Represents changes in value of the MSRs due to i) passage of time including the impact from both regularly scheduled loan principal payments and partial paydowns, and ii) loans that paid off during the period. (3) Represents changes in value primarily driven by market conditions. These changes are recorded in mortgage banking fees in the Consolidated Statements of Operations.
Fair value measurement inputs and valuation techniques	The following table presents quantitative information about the Company’s Level 3 assets, including the range and weighted-average of the significant unobservable inputs used to fair value these assets, as well as valuation techniques used. As of June 30, 2021 Valuation Technique Unobservable Input Range (Weighted Average) Mortgage servicing rights Discounted Cash Flow Constant prepayment rate 10.56-29.54% CPR (11.9% CPR) Option adjusted spread (1490)-1,060 bps (581 bps) Other derivative contracts Internal Model Pull through rate 10.38-99.90% (81.66%) MSR value (0.21)-154.76 bps (99.01 bps)
Gains (losses) on assets and liabilities measured on a nonrecurring basis included in earnings	The following table presents losses on assets measured at fair value on a nonrecurring basis and recorded in earnings: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Collateral-dependent loans $— ($22) ($19) ($44)
Fair value of assets and liabilities measured on a nonrecurring basis	The following table presents assets measured at fair value on a nonrecurring basis: June 30, 2021 December 31, 2020 (in millions) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Collateral-dependent loans $620 $— $620 $— $758 $— $758 $—
Assets and liabilities measured at fair value	The following tables present the estimated fair value for financial instruments not recorded at fair value in the unaudited interim Consolidated Financial Statements. The carrying amounts are recorded in the Consolidated Balance Sheets under the indicated captions: June 30, 2021 Total Level 1 Level 2 Level 3 (in millions) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Debt securities held to maturity $2,711 $2,790 $— $— $1,887 $1,964 $824 $826 Other loans held for sale 82 82 — — — — 82 82 Loans and leases 122,581 123,022 — — 620 620 121,961 122,402 Other assets 602 602 — — 594 594 8 8 Financial liabilities: Deposits 150,636 150,658 — — 150,636 150,658 — — Short-term borrowed funds 62 62 — — 62 62 — — Long-term borrowed funds 6,957 7,307 — — 6,957 7,307 — — December 31, 2020 Total Level 1 Level 2 Level 3 (in millions) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Financial assets: Debt securities held to maturity $3,235 $3,357 $— $— $2,342 $2,464 $893 $893 Other loans held for sale 439 439 — — — — 439 439 Loans and leases 123,090 123,678 — — 758 758 122,332 122,920 Other assets 604 604 — — 596 596 8 8 Financial liabilities: Deposits 147,164 147,223 — — 147,164 147,223 — — Short-term borrowed funds 243 243 — — 243 243 — — Long-term borrowed funds 8,346 8,850 — — 8,346 8,850 — —

NONINTEREST INCOME (Tables)

NONINTEREST INCOME (Tables)	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Components of revenue from contracts with customers	The following table presents the components of revenue from contracts with customers disaggregated by revenue stream and business operating segment: Three Months Ended June 30, 2021 Three Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Consumer Banking Commercial Banking Other Consolidated Service charges and fees $74 $26 $— $100 $59 $25 $— $84 Card fees 56 8 — 64 42 7 — 49 Capital markets fees — 84 — 84 — 48 — 48 Trust and investment services fees 60 — — 60 45 — — 45 Other banking fees — 2 — 2 — 1 — 1 Total revenue from contracts with customers $190 $120 $— $310 $146 $81 $— $227 Total revenue from other sources (1) 93 58 24 175 282 63 18 363 Total noninterest income $283 $178 $24 $485 $428 $144 $18 $590 Six Months Ended June 30, 2021 Six Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Consumer Banking Commercial Banking Other Consolidated Service charges and fees $148 $51 $— $199 $151 $51 $— $202 Card fees 103 15 — 118 87 17 — 104 Capital markets fees — 156 — 156 — 113 — 113 Trust and investment services fees 118 — — 118 98 — — 98 Other banking fees — 4 — 4 — 4 — 4 Total revenue from contracts with customers $369 $226 $— $595 $336 $185 $— $521 Total revenue from other sources (1) 265 122 45 432 449 84 33 566 Total noninterest income $634 $348 $45 $1,027 $785 $269 $33 $1,087 (1) Revenue from other sources includes bank-owned life insurance income of $16 million and $14 million for the three months ended June 30, 2021 and 2020, respectively, and $30 million and $28 million for the six months ended June 30, 2021 and 2020, respectively. Bank-owned life insurance income is included in other income in the consolidated statements of operations.

OTHER OPERATING EXPENSE (Tables

OTHER OPERATING EXPENSE (Tables)	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Schedule of other operating expense	The following table presents the details of other operating expense: Three Months Ended June 30, Six Months Ended June 30, (in millions) 2021 2020 2021 2020 Marketing $31 $27 $50 $51 Other 62 84 134 171 Other operating expense $93 $111 $184 $222

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Schedule of earnings per share	Three Months Ended June 30, Six Months Ended June 30, (in millions, except share and per share data) 2021 2020 2021 2020 Numerator (basic and diluted): Net income $648 $253 $1,259 $287 Less: Preferred stock dividends 32 28 55 50 Net income available to common stockholders $616 $225 $1,204 $237 Denominator: Weighted-average common shares outstanding - basic 425,948,706 426,613,053 425,951,197 427,165,737 Dilutive common shares: share-based awards 1,612,866 953,867 1,717,045 1,126,843 Weighted-average common shares outstanding - diluted 427,561,572 427,566,920 427,668,242 428,292,580 Earnings per common share: Basic $1.45 $0.53 $2.83 $0.56 Diluted (1) 1.44 0.53 2.81 0.55 (1) Potential dilutive common shares are excluded from the computation of diluted EPS in the periods where the effect would be antidilutive. Excluded from the computation of diluted EPS were weighted average antidilutive shares totaling 76,984 and 1,579,361 for the three months ended June 30, 2021 and 2020, respectively, and 43,877 and 1,211,751 for the six months ended June 30, 2021 and 2020, respectively.

BUSINESS OPERATING SEGMENTS (Ta

BUSINESS OPERATING SEGMENTS (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Schedule of segment reporting information	As of and for the Six Months Ended June 30, 2021 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $1,760 $840 ($359) $2,241 Noninterest income 634 348 45 1,027 Total revenue 2,394 1,188 (314) 3,268 Noninterest expense 1,501 453 55 2,009 Profit (loss) before provision for credit losses 893 735 (369) 1,259 Provision for credit losses 104 135 (592) (353) Income (loss) before income tax expense (benefit) 789 600 223 1,612 Income tax expense (benefit) 201 124 28 353 Net income (loss) $588 $476 $195 $1,259 Total average assets $75,443 $57,632 $50,443 $183,518 As of and for the Six Months Ended June 30, 2020 (in millions) Consumer Banking Commercial Banking Other Consolidated Net interest income $1,607 $784 ($71) $2,320 Noninterest income 785 269 33 1,087 Total revenue 2,392 1,053 (38) 3,407 Noninterest expense 1,473 434 84 1,991 Profit (loss) before provision for credit losses 919 619 (122) 1,416 Provision for credit losses 177 113 774 1,064 Income (loss) before income tax expense (benefit) 742 506 (896) 352 Income tax expense (benefit) 186 106 (227) 65 Net income (loss) $556 $400 ($669) $287 Total average assets $70,024 $62,142 $41,319 $173,485

SECURITIES - Narrative (Details

SECURITIES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Accrued interest receivable on debt securities	$ 54,000,000		$ 54,000,000		$ 55,000,000
Taxable interest income from securities	124,000,000	$ 130,000,000	252,000,000	$ 277,000,000
Offsetting of short-term receivables or payables recognized	$ 0		$ 0		$ 0
Held-to-maturity, zero expected credit loss, percent of portfolio	70.00%		70.00%
Held-to-maturity, expected credit loss, percent of portfolio	30.00%		30.00%
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Securitizations of mortgage loans	$ 82,000,000	$ 0	$ 163,000,000	$ 0

SECURITIES - Schedule of Invest

SECURITIES - Schedule of Investments (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Fair Value	[1]	$ 24,583	$ 22,942
Debt Securities Held-to-maturity, Amortized Cost	[1]	2,711	3,235
Debt Securities Held-to-maturity, Gross Unrealized Gain		79	122
Debt Securities Held-to-maturity, Gross Unrealized Losses		0	0
Debt Securities held-to-maturity, Fair Value		2,790	3,357
Total equity securities, at cost, Amortized Cost		602	604
Equity securities, at cost, fair value		602	604
Equity Securities, Amortized Cost		80	66
Equity Securities, Fair Value		80	66
U.S. Treasury and other
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		11	11
Debt Securities Available-for-sale, Gross Unrealized Gains		0	0
Debt Securities Available-for-sale, Gross Unrealized Losses		0	0
Debt Securities Available-for-sale, Fair Value		11	11
State and political subdivisions
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		3	3
Debt Securities Available-for-sale, Gross Unrealized Gains		0	0
Debt Securities Available-for-sale, Gross Unrealized Losses		0	0
Debt Securities Available-for-sale, Fair Value		3	3
Federal agencies and U.S. government sponsored entities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		23,960	21,954
Debt Securities Available-for-sale, Gross Unrealized Gains		354	571
Debt Securities Available-for-sale, Gross Unrealized Losses		(202)	(19)
Debt Securities Available-for-sale, Fair Value		24,112	22,506
Debt Securities Held-to-maturity, Amortized Cost		1,887	2,342
Debt Securities Held-to-maturity, Gross Unrealized Gain		77	122
Debt Securities Held-to-maturity, Gross Unrealized Losses		0	0
Debt Securities held-to-maturity, Fair Value		1,964	2,464
Other/non-agency
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		267	396
Debt Securities Available-for-sale, Gross Unrealized Gains		13	26
Debt Securities Available-for-sale, Gross Unrealized Losses		0	0
Debt Securities Available-for-sale, Fair Value		280	422
Total mortgage-backed securities, at fair value
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		24,227	22,350
Debt Securities Available-for-sale, Gross Unrealized Gains		367	597
Debt Securities Available-for-sale, Gross Unrealized Losses		(202)	(19)
Debt Securities Available-for-sale, Fair Value		24,392	22,928
Debt Securities Held-to-maturity, Amortized Cost		1,887	2,342
Debt Securities Held-to-maturity, Gross Unrealized Gain		77	122
Debt Securities Held-to-maturity, Gross Unrealized Losses		0	0
Debt Securities held-to-maturity, Fair Value		1,964	2,464
Collateralized loan obligations, at fair value
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		177	0
Debt Securities Available-for-sale, Gross Unrealized Gains		0	0
Debt Securities Available-for-sale, Gross Unrealized Losses		0	0
Debt Securities Available-for-sale, Fair Value		177	0
Total debt securities available for sale, at fair value
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Available-for-sale, Amortized Cost		24,418	22,364
Debt Securities Available-for-sale, Gross Unrealized Gains		367	597
Debt Securities Available-for-sale, Gross Unrealized Losses		(202)	(19)
Debt Securities Available-for-sale, Fair Value		24,583	22,942
Asset-backed securities
Schedule of Available-for-sale and Held-to-maturity Securities [Line Items]
Debt Securities Held-to-maturity, Amortized Cost		824	893
Debt Securities Held-to-maturity, Gross Unrealized Gain		2	0
Debt Securities Held-to-maturity, Gross Unrealized Losses		0	0
Debt Securities held-to-maturity, Fair Value		$ 826	$ 893
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

SECURITIES - Schedule of Availa

SECURITIES - Schedule of Available for Sale Securities Debt Maturities (Details) $ in Millions	Jun. 30, 2021USD ($)
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	$ 17
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	42
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	1,861
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	22,498
Amortized Cost, Debt securities available for sale, Total	24,418
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years	0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years	824
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years	1,887
Amortized Cost, Debt securities held to maturity, Total	2,711
Total amortized cost of debt securities, Maturity of 1 Year or Less	17
Total amortized cost of debt securities, Maturity of 1-5 Years	42
Total amortized cost of debt securities, Maturity of 5-10 Years	2,685
Total amortized cost of debt securities, Maturity After 10 Years	24,385
Total amortized cost of debt securities, Total	27,129
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	17
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	44
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	1,916
Fair Value, Debt securities available for sale, Maturity After 10 Years	22,606
Fair Value, Debt securities available for sale, Total	24,583
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less	0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years	0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years	826
Fair Value, Debt securities held to maturity, Maturity After 10 Years	1,964
Fair Value, Debt securities held to maturity, Total	2,790
Total fair value of debt securities, Maturity of 1 Year or Less	17
Total fair value of debt securities, Maturity of 1-5 Years	44
Total fair value of debt securities, Maturity of 5-10 Years	2,742
Total fair value of debt securities, Maturity After 10 Years	24,570
Total fair value of debt securities, Total	27,373
U.S. Treasury and other
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	11
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	0
Amortized Cost, Debt securities available for sale, Total	11
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	11
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	0
Fair Value, Debt securities available for sale, Maturity After 10 Years	0
Fair Value, Debt securities available for sale, Total	11
State and political subdivisions
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	3
Amortized Cost, Debt securities available for sale, Total	3
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	0
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	0
Fair Value, Debt securities available for sale, Maturity After 10 Years	3
Fair Value, Debt securities available for sale, Total	3
Federal agencies and U.S. government sponsored entities
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	6
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	42
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	1,861
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	22,051
Amortized Cost, Debt securities available for sale, Total	23,960
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years	0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years	0
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years	1,887
Amortized Cost, Debt securities held to maturity, Total	1,887
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	6
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	44
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	1,916
Fair Value, Debt securities available for sale, Maturity After 10 Years	22,146
Fair Value, Debt securities available for sale, Total	24,112
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less	0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years	0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years	0
Fair Value, Debt securities held to maturity, Maturity After 10 Years	1,964
Fair Value, Debt securities held to maturity, Total	1,964
Other/non-agency
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	267
Amortized Cost, Debt securities available for sale, Total	267
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	0
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	0
Fair Value, Debt securities available for sale, Maturity After 10 Years	280
Fair Value, Debt securities available for sale, Total	280
Collateralized loan obligations, at fair value
Amortized cost:
Amortized Cost, Debt securities available for sale, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities available for sale, Maturity of 1-5 Years	0
Amortized Cost, Debt securities available for sale, Maturity of 5-10 Years	0
Amortized Cost, Debt securities available for sale, Maturity After 10 Years	177
Amortized Cost, Debt securities available for sale, Total	177
Fair value:
Fair Value, Debt securities available for sale, Maturity of 1 Year or Less	0
Fair Value, Debt securities available for sale, Maturity of 1-5 Years	0
Fair Value, Debt securities available for sale, Maturity of 5-10 Years	0
Fair Value, Debt securities available for sale, Maturity After 10 Years	177
Fair Value, Debt securities available for sale, Total	177
Asset-backed securities
Amortized cost:
Amortized Cost, Debt securities held to maturity, Maturity of 1 Year or Less	0
Amortized Cost, Debt securities held to maturity, Maturity of 1-5 Years	0
Amortized Cost, Debt securities held to maturity, Maturity of 5-10 Years	824
Amortized Cost, Debt securities held to maturity, Maturity After 10 Years	0
Amortized Cost, Debt securities held to maturity, Total	824
Fair value:
Fair Value, Debt securities held to maturity, Maturity of 1 Year or Less	0
Fair Value, Debt securities held to maturity, Maturity of 1-5 Years	0
Fair Value, Debt securities held to maturity, Maturity of 5-10 Years	826
Fair Value, Debt securities held to maturity, Maturity After 10 Years	0
Fair Value, Debt securities held to maturity, Total	$ 826

SECURITIES - Income Recognized

SECURITIES - Income Recognized from Investment Securities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]
Gains on sale of debt securities	$ 3	$ 3	$ 6	$ 3
Losses on sale of debt securities	0	0	0	0
Debt securities gains, net	$ 3	$ 3	$ 6	$ 3

SECURITIES - Schedule of Securi

SECURITIES - Schedule of Securities Pledged (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Amortized Cost
Pledged against derivatives, to qualify for fiduciary powers, and to secure public and other deposits as required by law	$ 4,996	$ 3,818
Pledged against FHLB borrowed funds	266	394
Pledged against repurchase agreements	49	224
Fair Value
Pledged against derivatives, to qualify for fiduciary powers, and to secure public and other deposits as required by law	5,028	3,937
Pledged against FHLB borrowed funds	280	423
Pledged against repurchase agreements	$ 52	$ 231

SECURITIES - Schedule of Inve_2

SECURITIES - Schedule of Investments in Continuous Loss Positions (Details) - Federal agencies and U.S. government sponsored entities - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value
Less than 12 Months	$ 10,916	$ 1,991
12 Months or Longer	92	0
Total	11,008	1,991
Gross Unrealized Losses
Less than 12 Months	(200)	(19)
12 Months or Longer	(2)	0
Total	$ (202)	$ (19)

LOANS AND LEASES - Narrative (D

LOANS AND LEASES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable on loans and leases held for investment	$ 467		$ 467		$ 449
Interest income on direct financing lease	12	$ 19	25	$ 37
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of loans	237	71	563	262
Retail | Education
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments for purchase of loans	351	691	652	909
Retail | Other retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments for purchase of loans	176	$ 255	353	527
Retail | Consumer Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of loans				$ 1,500
Retail | Residential mortgages (2)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of loans			0
Retail | Residential mortgages (2)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral for FHLB borrowed funds	24,700		24,700		25,500
Consumer and Commercial Portfolio Segment | Auto, commercial and commercial real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral to support the contingent ability to borrow at the FRB discount window	$ 39,700		$ 39,700		$ 40,000

LOANS AND LEASES - Summary of L

LOANS AND LEASES - Summary of Loans and Leases Portfolio (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 122,581	$ 123,090
SBA Guaranteed PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases		4,200
FHA, VA And USDA Guaranteed Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,400	249
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	59,083	60,793
Commercial | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	42,842	44,173
Commercial | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,412	14,652
Commercial | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	1,829	1,968
Commercial | SBA Guaranteed PPP Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	3,500
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	63,498	62,297
Retail | Residential mortgages (2)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	20,538	19,539
Retail | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	11,841	12,149
Retail | Automobile
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	12,780	12,153
Retail | Education
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	12,800	12,308
Retail | Other retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 5,539	$ 6,148

LOANS AND LEASES - Loans Held F

LOANS AND LEASES - Loans Held For Sale (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at fair value	$ 3,616	$ 3,564
Other loans held for sale	82	439
Residential loans held for sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at fair value	3,499	3,416
Other loans held for sale	0	0
Commercial loans held for sale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at fair value	117	148
Other loans held for sale	$ 82	$ 439

ALLOWANCE FOR CREDIT LOSSES, _3

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Financing Receivable, Troubled Debt Restructuring [Line Items]
ACL Balance	$ 2,100		$ 2,100		$ 2,700
Charge-offs			236
Provision charged to income	(213)	$ 464	(353)	$ 1,064
Loans and leases	122,581		122,581		123,090
Mortgage loans collateralized by OREO	152		152		119
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Charge-offs			30
Loans and leases	59,083		59,083		60,793
Retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Charge-offs increase (decrease)			(78)
Loans and leases	63,498		63,498		62,297
Commercial and industrial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and leases	42,842		42,842		44,173
Collateral Dependent | Home Equity Loan And Residential Mortgages | Retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and leases	554		554		552
Collateral Dependent | Commercial and industrial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans and leases	$ 66		$ 66		$ 206

ALLOWANCE FOR CREDIT LOSSES, _4

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Summary of Changes in Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance			$ 2,443
Charge-offs			(236)
Provision charged to income	$ (213)	$ 464	(353)	$ 1,064
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	1,947		1,947
Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	2,194	2,171	2,443	1,252
Charge-offs	(125)	(180)	(352)	(354)
Recoveries	47	33	116	70
Net charge-offs	(78)	(147)	(236)	(284)
Provision charged to income	(169)	424	(260)	1,027
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	1,947	2,448	1,947	2,448
Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	178	39	227	44
Provision for unfunded lending commitments	(44)	40	(93)	37
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	134	79	134	79
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs			(30)
Commercial | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	1,146	752	1,233	674
Charge-offs	(45)	(74)	(179)	(121)
Recoveries	4	3	34	6
Net charge-offs	(41)	(71)	(145)	(115)
Provision charged to income	(152)	554	(135)	852
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	953	1,235	953	1,235
Commercial | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	165	38	186	44
Provision for unfunded lending commitments	(44)	31	(65)	28
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	121	69	121	69
Retail | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	1,048	1,419	1,210	578
Charge-offs	(80)	(106)	(173)	(233)
Recoveries	43	30	82	64
Net charge-offs	(37)	(76)	(91)	(169)
Provision charged to income	(17)	(130)	(125)	175
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	994	1,213	994	1,213
Retail | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance	13	1	41	0
Provision for unfunded lending commitments	0	9	(28)	9
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Ending balance	$ 13	10	$ 13	10
Cumulative Effect, Period Of Adoption, Adjustment | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		453
Cumulative Effect, Period Of Adoption, Adjustment | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		(2)
Cumulative Effect, Period Of Adoption, Adjustment | Commercial | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		(176)
Cumulative Effect, Period Of Adoption, Adjustment | Commercial | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		(3)
Cumulative Effect, Period Of Adoption, Adjustment | Retail | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		629
Cumulative Effect, Period Of Adoption, Adjustment | Retail | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		0		1
Cumulative Effect, Period Of Adoption, Adjusted Balance | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		2,171		1,705
Cumulative Effect, Period Of Adoption, Adjusted Balance | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		39		42
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		752		498
Cumulative Effect, Period Of Adoption, Adjusted Balance | Commercial | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		38		41
Cumulative Effect, Period Of Adoption, Adjusted Balance | Retail | Allowance for loan and lease losses
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		1,419		1,207
Cumulative Effect, Period Of Adoption, Adjusted Balance | Retail | Reserve for unfunded lending commitments
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses / Reserve for unfunded lending commitments, Beginning balance		$ 1		$ 1

ALLOWANCE FOR CREDIT LOSSES, _5

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Amortized Cost Basis by Credit Quality Indicator (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 122,581	$ 123,090
SBA Guaranteed PPP Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total		4,200
SBA Guaranteed PPP Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,500
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
2021	6,014	10,683
2020	8,335	9,445
2019	10,102	7,862
2018	7,564	3,746
2017	3,605	2,200
Prior to 2017	5,568	3,998
Within the Revolving Period	17,720	22,459
Converted to Term	175	400
Total	59,083	60,793
Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	5,877	10,339
2020	8,080	8,812
2019	9,202	7,219
2018	6,839	3,419
2017	3,099	1,903
Prior to 2017	4,926	3,572
Within the Revolving Period	16,662	20,552
Converted to Term	151	340
Total	54,836	56,156
Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	77	56
2020	50	398
2019	390	286
2018	300	180
2017	234	156
Prior to 2017	321	239
Within the Revolving Period	468	1,071
Converted to Term	0	34
Total	1,840	2,420
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	33	207
2020	180	199
2019	478	315
2018	403	109
2017	260	138
Prior to 2017	300	153
Within the Revolving Period	583	749
Converted to Term	21	22
Total	2,258	1,892
Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	27	81
2020	25	36
2019	32	42
2018	22	38
2017	12	3
Prior to 2017	21	34
Within the Revolving Period	7	87
Converted to Term	3	4
Total	149	325
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2021	5,208	8,226
2020	5,322	6,199
2019	5,735	4,625
2018	4,108	2,396
2017	2,175	1,301
Prior to 2017	3,222	2,311
Within the Revolving Period	16,897	18,715
Converted to Term	175	400
Total	42,842	44,173
Commercial | Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	5,146	8,036
2020	5,140	5,730
2019	5,260	4,180
2018	3,623	2,174
2017	1,975	1,157
Prior to 2017	2,797	1,980
Within the Revolving Period	15,853	17,281
Converted to Term	151	340
Total	39,945	40,878
Commercial | Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3	34
2020	41	264
2019	196	163
2018	196	84
2017	74	60
Prior to 2017	181	173
Within the Revolving Period	454	771
Converted to Term	0	34
Total	1,145	1,583
Commercial | Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	32	91
2020	125	195
2019	263	248
2018	267	100
2017	114	81
Prior to 2017	226	127
Within the Revolving Period	583	600
Converted to Term	21	22
Total	1,631	1,464
Commercial | Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	27	65
2020	16	10
2019	16	34
2018	22	38
2017	12	3
Prior to 2017	18	31
Within the Revolving Period	7	63
Converted to Term	3	4
Total	121	248
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2021	536	1,999
2020	2,627	2,994
2019	4,145	3,004
2018	3,250	1,203
2017	1,327	713
Prior to 2017	1,704	995
Within the Revolving Period	823	3,744
Converted to Term	0	0
Total	14,412	14,652
Commercial | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	462	1,848
2020	2,572	2,836
2019	3,726	2,810
2018	3,013	1,106
2017	1,026	566
Prior to 2017	1,507	919
Within the Revolving Period	809	3,271
Converted to Term	0	0
Total	13,115	13,356
Commercial | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	73	19
2020	7	130
2019	193	121
2018	102	92
2017	155	94
Prior to 2017	122	48
Within the Revolving Period	14	300
Converted to Term	0	0
Total	666	804
Commercial | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1	116
2020	39	2
2019	210	65
2018	135	5
2017	146	53
Prior to 2017	73	26
Within the Revolving Period	0	149
Converted to Term	0	0
Total	604	416
Commercial | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	16
2020	9	26
2019	16	8
2018	0	0
2017	0	0
Prior to 2017	2	2
Within the Revolving Period	0	24
Converted to Term	0	0
Total	27	76
Commercial | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2021	270	458
2020	386	252
2019	222	233
2018	206	147
2017	103	186
Prior to 2017	642	692
Within the Revolving Period	0	0
Converted to Term	0	0
Total	1,829	1,968
Commercial | Leases | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2021	269	455
2020	368	246
2019	216	229
2018	203	139
2017	98	180
Prior to 2017	622	673
Within the Revolving Period	0	0
Converted to Term	0	0
Total	1,776	1,922
Commercial | Leases | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1	3
2020	2	4
2019	1	2
2018	2	4
2017	5	2
Prior to 2017	18	18
Within the Revolving Period	0	0
Converted to Term	0	0
Total	29	33
Commercial | Leases | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	16	2
2019	5	2
2018	1	4
2017	0	4
Prior to 2017	1	0
Within the Revolving Period	0	0
Converted to Term	0	0
Total	23	12
Commercial | Leases | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior to 2017	1	1
Within the Revolving Period	0	0
Converted to Term	0	0
Total	1	1
Commercial | SBA Guaranteed PPP Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,500
Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	8,316	17,242
2020	15,883	10,972
2019	9,030	5,335
2018	4,385	4,816
2017	3,970	4,462
Prior to 2017	8,806	6,323
Within the Revolving Period	11,819	11,755
Converted to Term	1,289	1,392
Total	63,498	62,297
Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,893	6,512
2020	6,157	3,493
2019	3,158	1,278
2018	1,208	1,947
2017	1,798	2,770
Prior to 2017	5,324	3,539
Within the Revolving Period	0	0
Converted to Term	0	0
Total	20,538	19,539
Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1	6
2020	10	47
2019	52	75
2018	74	78
2017	72	50
Prior to 2017	717	833
Within the Revolving Period	9,648	9,692
Converted to Term	1,267	1,368
Total	11,841	12,149
Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3,341	4,728
2020	4,024	3,449
2019	2,709	1,864
2018	1,386	1,232
2017	853	642
Prior to 2017	467	238
Within the Revolving Period	0	0
Converted to Term	0	0
Total	12,780	12,153
Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,544	4,094
2020	4,270	2,706
2019	2,339	1,606
2018	1,363	1,333
2017	1,090	952
Prior to 2017	2,194	1,617
Within the Revolving Period	0	0
Converted to Term	0	0
Total	12,800	12,308
Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	537	1,902
2020	1,422	1,277
2019	772	512
2018	354	226
2017	157	48
Prior to 2017	104	96
Within the Revolving Period	2,171	2,063
Converted to Term	22	24
Total	5,539	6,148
Greater than 800 | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2,279	6,023
2020	6,218	4,448
2019	3,573	2,084
2018	1,555	2,306
2017	1,763	2,382
Prior to 2017	4,097	2,854
Within the Revolving Period	4,649	4,660
Converted to Term	318	344
Total	24,452	25,101
Greater than 800 | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	851	2,687
2020	3,079	1,885
2019	1,574	638
2018	454	1,129
2017	897	1,615
Prior to 2017	2,697	1,755
Within the Revolving Period	0	0
Converted to Term	0	0
Total	9,552	9,709
Greater than 800 | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1	2
2020	2	8
2019	6	10
2018	6	7
2017	5	5
Prior to 2017	170	216
Within the Revolving Period	4,292	4,319
Converted to Term	318	344
Total	4,800	4,911
Greater than 800 | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	756	1,056
2020	951	812
2019	681	424
2018	333	312
2017	223	169
Prior to 2017	122	62
Within the Revolving Period	0	0
Converted to Term	0	0
Total	3,066	2,835
Greater than 800 | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	564	1,817
2020	1,843	1,363
2019	1,103	849
2018	662	781
2017	590	578
Prior to 2017	1,066	777
Within the Revolving Period	0	0
Converted to Term	0	0
Total	5,828	6,165
Greater than 800 | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	107	461
2020	343	380
2019	209	163
2018	100	77
2017	48	15
Prior to 2017	42	44
Within the Revolving Period	357	341
Converted to Term	0	0
Total	1,206	1,481
740-799 | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3,643	6,864
2020	5,892	3,630
2019	2,885	1,661
2018	1,326	1,345
2017	1,092	1,190
Prior to 2017	2,253	1,597
Within the Revolving Period	3,995	3,872
Converted to Term	308	333
Total	21,394	20,492
740-799 | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,619	2,931
2020	2,261	1,133
2019	890	398
2018	311	527
2017	448	743
Prior to 2017	1,335	904
Within the Revolving Period	0	0
Converted to Term	0	0
Total	6,864	6,636
740-799 | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	2
2020	1	6
2019	5	7
2018	6	6
2017	6	5
Prior to 2017	146	180
Within the Revolving Period	3,333	3,234
Converted to Term	306	331
Total	3,803	3,771
740-799 | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,096	1,514
2020	1,320	1,022
2019	813	531
2018	401	344
2017	242	172
Prior to 2017	122	59
Within the Revolving Period	0	0
Converted to Term	0	0
Total	3,994	3,642
740-799 | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	759	1,797
2020	1,831	1,009
2019	892	541
2018	480	387
2017	338	251
Prior to 2017	614	423
Within the Revolving Period	0	0
Converted to Term	0	0
Total	4,914	4,408
740-799 | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	169	620
2020	479	460
2019	285	184
2018	128	81
2017	58	19
Prior to 2017	36	31
Within the Revolving Period	662	638
Converted to Term	2	2
Total	1,819	2,035
680-739 | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1,700	3,077
2020	2,671	1,842
2019	1,537	917
2018	783	644
2017	537	541
Prior to 2017	1,238	918
Within the Revolving Period	2,201	2,193
Converted to Term	279	289
Total	10,946	10,421
680-739 | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	377	784
2020	653	351
2019	360	162
2018	178	172
2017	169	295
Prior to 2017	660	458
Within the Revolving Period	0	0
Converted to Term	0	0
Total	2,397	2,222
680-739 | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1
2020	1	6
2019	8	10
2018	13	15
2017	18	8
Prior to 2017	162	179
Within the Revolving Period	1,608	1,632
Converted to Term	274	284
Total	2,084	2,135
680-739 | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	969	1,347
2020	1,109	889
2019	690	461
2018	335	282
2017	190	138
Prior to 2017	98	47
Within the Revolving Period	0	0
Converted to Term	0	0
Total	3,391	3,164
680-739 | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	204	450
2020	536	294
2019	289	173
2018	172	127
2017	123	90
Prior to 2017	300	221
Within the Revolving Period	0	0
Converted to Term	0	0
Total	1,624	1,355
680-739 | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	150	495
2020	372	302
2019	190	111
2018	85	48
2017	37	10
Prior to 2017	18	13
Within the Revolving Period	593	561
Converted to Term	5	5
Total	1,450	1,545
620-679 | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	608	1,040
2020	856	727
2019	648	391
2018	376	276
2017	284	192
Prior to 2017	640	491
Within the Revolving Period	544	576
Converted to Term	188	202
Total	4,144	3,895
620-679 | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	42	97
2020	112	94
2019	180	44
2018	103	56
2017	117	66
Prior to 2017	328	223
Within the Revolving Period	0	0
Converted to Term	0	0
Total	882	580
620-679 | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	0
2020	3	10
2019	13	18
2018	24	21
2017	20	14
Prior to 2017	133	136
Within the Revolving Period	336	402
Converted to Term	182	195
Total	711	796
620-679 | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	458	669
2020	506	484
2019	345	259
2018	184	157
2017	108	84
Prior to 2017	63	32
Within the Revolving Period	0	0
Converted to Term	0	0
Total	1,664	1,685
620-679 | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	14	26
2020	54	35
2019	45	33
2018	37	28
2017	29	25
Prior to 2017	110	95
Within the Revolving Period	0	0
Converted to Term	0	0
Total	289	242
620-679 | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	94	248
2020	181	104
2019	65	37
2018	28	14
2017	10	3
Prior to 2017	6	5
Within the Revolving Period	208	174
Converted to Term	6	7
Total	598	592
Less than 620 | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	73	179
2020	235	322
2019	386	281
2018	345	240
2017	294	156
Prior to 2017	511	385
Within the Revolving Period	145	182
Converted to Term	194	222
Total	2,183	1,967
Less than 620 | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2	12
2020	49	28
2019	153	35
2018	162	58
2017	167	50
Prior to 2017	293	185
Within the Revolving Period	0	0
Converted to Term	0	0
Total	826	368
Less than 620 | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0	1
2020	3	17
2019	20	30
2018	25	29
2017	23	18
Prior to 2017	106	122
Within the Revolving Period	79	105
Converted to Term	187	214
Total	443	536
Less than 620 | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	59	140
2020	138	242
2019	180	189
2018	133	137
2017	90	79
Prior to 2017	61	34
Within the Revolving Period	0	0
Converted to Term	0	0
Total	661	821
Less than 620 | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	1	2
2020	6	5
2019	10	10
2018	12	10
2017	10	8
Prior to 2017	49	41
Within the Revolving Period	0	0
Converted to Term	0	0
Total	88	76
Less than 620 | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	11	24
2020	39	30
2019	23	17
2018	13	6
2017	4	1
Prior to 2017	2	3
Within the Revolving Period	66	77
Converted to Term	7	8
Total	165	166
No FICO available | Retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	13	59
2020	11	3
2019	1	1
2018	0	5
2017	0	1
Prior to 2017	67	78
Within the Revolving Period	285	272
Converted to Term	2	2
Total	379	421
No FICO available | Retail | Residential mortgages (2)
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2	1
2020	3	2
2019	1	1
2018	0	5
2017	0	1
Prior to 2017	11	14
Within the Revolving Period	0	0
Converted to Term	0	0
Total	17	24
No FICO available | Retail | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
2021	0
2020	0
2019	0
2018	0
2017	0
Prior to 2017	0
Within the Revolving Period	0
Converted to Term	0
Total	0
No FICO available | Retail | Automobile
Financing Receivable, Credit Quality Indicator [Line Items]
2021	3	2
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior to 2017	1	4
Within the Revolving Period	0	0
Converted to Term	0	0
Total	4	6
No FICO available | Retail | Education
Financing Receivable, Credit Quality Indicator [Line Items]
2021	2	2
2020	0	0
2019	0	0
2018	0	0
2017	0	0
Prior to 2017	55	60
Within the Revolving Period	0	0
Converted to Term	0	0
Total	57	62
No FICO available | Retail | Other retail
Financing Receivable, Credit Quality Indicator [Line Items]
2021	6	54
2020	8	1
2019	0	0
2018	0	0
2017	0	0
Prior to 2017	0	0
Within the Revolving Period	285	272
Converted to Term	2	2
Total	$ 301	$ 329

ALLOWANCE FOR CREDIT LOSSES, _6

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Nonaccrual Loans and Leases by Class (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	$ 779	$ 1,019
90+ days past due and accruing	280	62
Nonaccrual with no related ACL	442	380
Commercial
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	266	458
90+ days past due and accruing	1	21
Nonaccrual with no related ACL	77	58
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	163	280
90+ days past due and accruing	0	20
Nonaccrual with no related ACL	40	56
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	102	176
90+ days past due and accruing	0	0
Nonaccrual with no related ACL	37	2
Commercial | Leases
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	1	2
90+ days past due and accruing	1	1
Nonaccrual with no related ACL	0	0
Retail
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	513	561
90+ days past due and accruing	279	41
Nonaccrual with no related ACL	365	322
Retail | Residential mortgages (2)
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	174	167
90+ days past due and accruing	270	30
Nonaccrual with no related ACL	138	96
Retail | Home equity
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	234	276
90+ days past due and accruing	0	0
Nonaccrual with no related ACL	189	207
Retail | Automobile
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	62	72
90+ days past due and accruing	0	0
Nonaccrual with no related ACL	34	17
Retail | Education
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	21	18
90+ days past due and accruing	2	2
Nonaccrual with no related ACL	2	2
Retail | Other retail
Financing Receivable, Past Due [Line Items]
Nonaccrual loans and leases	22	28
90+ days past due and accruing	7	9
Nonaccrual with no related ACL	2	0
Retail | FHA, VA And USDA Loans
Financing Receivable, Past Due [Line Items]
90+ days past due and accruing	$ 266	$ 21

ALLOWANCE FOR CREDIT LOSSES, _7

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Accruing and Nonaccruing Past Due Amounts (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Current	$ 121,212	$ 121,646
Total	122,581	123,090
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	413	594
Financing Receivables 60 To 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	161	257
Financing Receivables 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Past Due	795	593
Commercial
Financing Receivable, Past Due [Line Items]
Current	58,906	60,304
Total	59,083	60,793
Commercial | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Current	42,769	43,817
Total	42,842	44,173
Commercial | Commercial real estate
Financing Receivable, Past Due [Line Items]
Current	14,310	14,531
Total	14,412	14,652
Commercial | Leases
Financing Receivable, Past Due [Line Items]
Current	1,827	1,956
Total	1,829	1,968
Commercial | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	25	233
Commercial | Financing Receivables, 30 to 59 Days Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past Due	24	223
Commercial | Financing Receivables, 30 to 59 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past Due	1	1
Commercial | Financing Receivables, 30 to 59 Days Past Due | Leases
Financing Receivable, Past Due [Line Items]
Past Due	0	9
Commercial | Financing Receivables 60 To 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	7	101
Commercial | Financing Receivables 60 To 89 Days Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past Due	7	16
Commercial | Financing Receivables 60 To 89 Days Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past Due	0	85
Commercial | Financing Receivables 60 To 89 Days Past Due | Leases
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Commercial | Financing Receivables 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Past Due	145	155
Commercial | Financing Receivables 90 Days or More Past Due | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past Due	42	117
Commercial | Financing Receivables 90 Days or More Past Due | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past Due	101	35
Commercial | Financing Receivables 90 Days or More Past Due | Leases
Financing Receivable, Past Due [Line Items]
Past Due	2	3
Retail
Financing Receivable, Past Due [Line Items]
Current	62,306	61,342
Total	63,498	62,297
Retail | Residential mortgages (2)
Financing Receivable, Past Due [Line Items]
Current	19,885	19,291
Total	20,538	19,539
Retail | Home equity
Financing Receivable, Past Due [Line Items]
Current	11,607	11,848
Total	11,841	12,149
Retail | Automobile
Financing Receivable, Past Due [Line Items]
Current	12,613	11,901
Total	12,780	12,153
Retail | Education
Financing Receivable, Past Due [Line Items]
Current	12,747	12,255
Total	12,800	12,308
Retail | Other retail
Financing Receivable, Past Due [Line Items]
Current	5,454	6,047
Total	5,539	6,148
Retail | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	388	361
Retail | Financing Receivables, 30 to 59 Days Past Due | Residential mortgages (2)
Financing Receivable, Past Due [Line Items]
Past Due	176	59
Retail | Financing Receivables, 30 to 59 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Past Due	32	61
Retail | Financing Receivables, 30 to 59 Days Past Due | Automobile
Financing Receivable, Past Due [Line Items]
Past Due	114	170
Retail | Financing Receivables, 30 to 59 Days Past Due | Education
Financing Receivable, Past Due [Line Items]
Past Due	29	33
Retail | Financing Receivables, 30 to 59 Days Past Due | Other retail
Financing Receivable, Past Due [Line Items]
Past Due	37	38
Retail | Financing Receivables 60 To 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Past Due	154	156
Retail | Financing Receivables 60 To 89 Days Past Due | Residential mortgages (2)
Financing Receivable, Past Due [Line Items]
Past Due	61	21
Retail | Financing Receivables 60 To 89 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Past Due	17	28
Retail | Financing Receivables 60 To 89 Days Past Due | Automobile
Financing Receivable, Past Due [Line Items]
Past Due	43	65
Retail | Financing Receivables 60 To 89 Days Past Due | Education
Financing Receivable, Past Due [Line Items]
Past Due	13	13
Retail | Financing Receivables 60 To 89 Days Past Due | Other retail
Financing Receivable, Past Due [Line Items]
Past Due	20	29
Retail | Financing Receivables 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Past Due	650	438
Retail | Financing Receivables 90 Days or More Past Due | Residential mortgages (2)
Financing Receivable, Past Due [Line Items]
Past Due	416	168
Retail | Financing Receivables 90 Days or More Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Past Due	185	212
Retail | Financing Receivables 90 Days or More Past Due | Automobile
Financing Receivable, Past Due [Line Items]
Past Due	10	17
Retail | Financing Receivables 90 Days or More Past Due | Education
Financing Receivable, Past Due [Line Items]
Past Due	11	7
Retail | Financing Receivables 90 Days or More Past Due | Other retail
Financing Receivable, Past Due [Line Items]
Past Due	$ 28	$ 34

ALLOWANCE FOR CREDIT LOSSES, _8

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Troubled Debt Restructurings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge-offs from modification of loans	$ 2	$ 4	$ 4	$ 6
TDR commitment to lend	45		45		$ 49
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR's that defaulted within 12 months of modification date	1	26	23	39
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR's that defaulted within 12 months of modification date	$ 14	$ 14	$ 29	$ 25

ALLOWANCE FOR CREDIT LOSSES, _9

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Troubled Debt Restructuring Activity (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)contract	Jun. 30, 2020USD ($)contract	Jun. 30, 2021USD ($)contract	Jun. 30, 2020USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2,017	2,229	3,659	3,761
Post-modification	$ 252	$ 124	$ 295	$ 200
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	11	16	20	31
Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	126	21	140	28
Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 115	$ 87	$ 135	$ 141
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	15	19	22	38
Post-modification	$ 57	$ 56	$ 60	$ 97
Commercial | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Commercial | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	3	3	6	3
Commercial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 54	$ 53	$ 54	$ 94
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	15	19	22	38
Post-modification	$ 57	$ 56	$ 60	$ 97
Commercial | Commercial and industrial | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Commercial | Commercial and industrial | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	3	3	6	3
Commercial | Commercial and industrial | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 54	$ 53	$ 54	$ 94
Commercial | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	0	0	0	0
Post-modification	$ 0	$ 0	$ 0	$ 0
Commercial | Commercial real estate | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Commercial | Commercial real estate | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Commercial | Commercial real estate | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 0	$ 0	$ 0	$ 0
Retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	2,002	2,210	3,637	3,723
Post-modification	$ 195	$ 68	$ 235	$ 103
Retail | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	11	16	20	31
Retail | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	123	18	134	25
Retail | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 61	$ 34	$ 81	$ 47
Retail | Residential mortgages (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	671	145	713	241
Post-modification	$ 172	$ 28	$ 185	$ 45
Retail | Residential mortgages (2) | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	8	11	12	17
Retail | Residential mortgages (2) | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	120	14	126	21
Retail | Residential mortgages (2) | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 44	$ 3	$ 47	$ 7
Retail | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	102	266	249	389
Post-modification	$ 7	$ 17	$ 18	$ 25
Retail | Home equity | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	1	2	3	6
Retail | Home equity | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	3	4	8	4
Retail | Home equity | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 3	$ 11	$ 7	$ 15
Retail | Automobile
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	379	947	1,048	1,177
Post-modification	$ 6	$ 15	$ 14	$ 18
Retail | Automobile | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	1	0	1	1
Retail | Automobile | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Retail | Automobile | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 5	$ 15	$ 13	$ 17
Retail | Education
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	265	142	412	233
Post-modification	$ 9	$ 4	$ 13	$ 6
Retail | Education | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Retail | Education | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Retail | Education | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 9	$ 4	$ 13	$ 6
Retail | Other retail
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	585	710	1,215	1,683
Post-modification	$ 1	$ 4	$ 5	$ 9
Retail | Other retail | Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	1	3	4	7
Retail | Other retail | Maturity Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	0	0	0	0
Retail | Other retail | Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Post-modification	$ 0	$ 1	$ 1	$ 2

ALLOWANCE FOR CREDIT LOSSES,_10

ALLOWANCE FOR CREDIT LOSSES, NONACCRUING LOANS AND LEASES, AND CONCENTRATIONS OF CREDIT RISK - Loans with Indicators of High Credit Risk (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
High loan to value criteria (exceeds)	90.00%
High loan-to-value
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 262	$ 353
High loan-to-value | Residential Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total	235	289
High loan-to-value | Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Total	27	64
High loan-to-value | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
High loan-to-value | Education
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Interest-only
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,144	2,801
Interest-only | Residential Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,143	2,801
Interest-only | Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Interest-only | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Interest-only | Education
Financing Receivable, Credit Quality Indicator [Line Items]
Total	1	0
Low introductory rate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	135	170
Low introductory rate | Residential Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Low introductory rate | Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Low introductory rate | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total	135	170
Low introductory rate | Education
Financing Receivable, Credit Quality Indicator [Line Items]
Total	0	0
Credit risk, loans with increased credit exposure
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,541	3,324
Credit risk, loans with increased credit exposure | Residential Mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
Total	3,378	3,090
Credit risk, loans with increased credit exposure | Home Equity
Financing Receivable, Credit Quality Indicator [Line Items]
Total	27	64
Credit risk, loans with increased credit exposure | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Total	135	170
Credit risk, loans with increased credit exposure | Education
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 1	$ 1

MORTGAGE BANKING AND OTHER - Na

MORTGAGE BANKING AND OTHER - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 122,581	$ 123,090
Mortgage loans serviced for others | Banking Subsidiaries
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 84,600	$ 81,200

MORTGAGE BANKING AND OTHER - Re

MORTGAGE BANKING AND OTHER - Residential Mortgage Loan Sales (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Residential mortgages (2)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Cash Proceeds from residential mortgage loans sold with servicing retained	$ 10,540	$ 8,797	$ 19,577	$ 14,164
Mortgage banking fees
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Gain on sales	85	283	225	426
Contractually specified servicing, late and other anciliary fees	$ 60	$ 55	$ 118	$ 113

MORTGAGE BANKING AND OTHER - Ch

MORTGAGE BANKING AND OTHER - Changes Related to MSRs - Fair Value Method (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
MSRs
Fair value as of beginning of period			$ 658
Fair value at end of the period	$ 902		902
Residential mortgages (2)
MSRs
Fair value as of beginning of period	893	$ 577	658	$ 642
Amounts capitalized	122	86	209	153
Changes in unpaid principal balance during the period	(47)	(46)	(105)	(86)
Changes in fair value during the period	(66)	(49)	140	(331)
Fair value at end of the period	902	568	902	568
Cumulative Effect, Period Of Adoption, Adjustment | Residential mortgages (2)
MSRs
Fair value as of beginning of period	0	0	0	190
Cumulative Effect, Period Of Adoption, Adjusted Balance | Residential mortgages (2)
MSRs
Fair value as of beginning of period	$ 893	$ 577	$ 658	$ 832

MORTGAGE BANKING AND OTHER - Ec

MORTGAGE BANKING AND OTHER - Economic Assumptions Used to Estimate Value of MSRs (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
MSR portfolio fair value	$ 902		$ 658
Weighted average life (in years)	5 years 8 months 12 days	4 years 2 months 12 days
Weighted average constant prepayment rate (1)	11.90%	17.30%
Weighted average option adjusted spread	5.81%	5.95%
Minimum
Servicing Assets at Fair Value [Line Items]
Sensitivity analysis, basis spread	0.50%	0.50%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Decline in fair value due to 50 bps decrease in prepayment rate	$ 129	$ 122
Decline in fair value due to 50 bps decrease in option adjusted spread	$ 18	$ 12
Maximum
Servicing Assets at Fair Value [Line Items]
Sensitivity analysis, basis spread	1.00%	1.00%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Decline in fair value due to 100 bps decrease in prepayment rate	$ 273	$ 202
Decline in fair value due to 100 bps decrease in option adjusted spread	$ 36	$ 24

MORTGAGE BANKING AND OTHER - Ot

MORTGAGE BANKING AND OTHER - Other Serviced Loans (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 122,581	$ 123,090
Education Loans Serviced For Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	867	974
SBA Loans Serviced For Others | CBNA and Other Subsidiaries
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 61	$ 51

VARIABLE INTEREST ENTITIES - Na

VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Variable Interest Entity
Lending to special purpose entities included in loans and leases	$ 122,581,000,000		$ 122,581,000,000		$ 123,090,000,000
LIHTC Investments
Variable Interest Entity
Net impairment losses recognized in earnings	0	$ 0	0	$ 0
Commitments to extend credit | Special Purpose Entities
Variable Interest Entity
Commitment amount	1,700,000,000		1,700,000,000		1,500,000,000
Commercial and industrial | Special Purpose Entities
Variable Interest Entity
Lending to special purpose entities included in loans and leases	1,520,000,000		1,520,000,000		1,295,000,000
Retail
Variable Interest Entity
Lending to special purpose entities included in loans and leases	63,498,000,000		63,498,000,000		62,297,000,000
Retail | Education
Variable Interest Entity
Lending to special purpose entities included in loans and leases	$ 12,800,000,000		$ 12,800,000,000		$ 12,308,000,000

VARIABLE INTEREST ENTITIES - Sc

VARIABLE INTEREST ENTITIES - Schedule of Variable Interest Entities (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Variable Interest Entity
Lending to special purpose entities included in loans and leases		$ 122,581	$ 123,090
Securities available for sale	[1]	24,583	22,942
Securities held to maturity, carrying value	[1]	2,711	3,235
LIHTC Investments
Variable Interest Entity
LIHTC investment included in other assets		1,926	1,687
LIHTC unfunded commitments included in other liabilities		974	875
Renewable Energy
Variable Interest Entity
Renewable energy investments included in other assets		448	403
Commercial and industrial | Special Purpose Entities
Variable Interest Entity
Lending to special purpose entities included in loans and leases		1,520	1,295
Asset-backed securities
Variable Interest Entity
Securities held to maturity, carrying value		824	893
Asset-backed securities | Asset-backed securities
Variable Interest Entity
Securities held to maturity, carrying value		$ 826	$ 893
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

VARIABLE INTEREST ENTITIES - _2

VARIABLE INTEREST ENTITIES - Schedule of Affordable Housing Tax Credit Investments (Details) - LIHTC Investments - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Variable Interest Entity
Tax credits included in income tax expense	$ 51	$ 39	$ 102	$ 80
Other tax benefits included in income tax expense	13	10	25	20
Total tax benefits included in income tax expense	64	49	127	100
Less: Amortization included in income tax expense	53	42	106	85
Net benefits from affordable housing tax credit investments included in income tax expense	$ 11	$ 7	$ 21	$ 15

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Short-term borrowed funds	$ 62	$ 243
Hedging basis adjustments	1,925	2,153
Available borrowing capacity	64,300
Federal Home Loan Bank Advances and Letters of Credit | Secured Debt
Debt Instrument [Line Items]
Short-term borrowed funds	2,500	3,200
Federal Home Loan Bank advances
Debt Instrument [Line Items]
Available borrowing capacity	14,400	13,900
Parent Company
Debt Instrument [Line Items]
Principal balance	3,200	3,500
Unamortized deferred issuance costs and/or discounts	(84)	(90)
Banking Subsidiaries
Debt Instrument [Line Items]
Principal balance	3,800	4,800
Unamortized deferred issuance costs and/or discounts	(9)	(11)
Hedging basis adjustments	$ 76	$ 112

BORROWED FUNDS - Long Term Debt

BORROWED FUNDS - Long Term Debt (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)note	Dec. 31, 2020USD ($)
Debt Instrument [Line Items]
Long-term borrowed funds	$ 6,957	$ 8,346
Private Exchange Offers
Debt Instrument [Line Items]
Principal amount	$ 265
Number of outstanding subordinated notes exchanged | note	5
Parent Company
Debt Instrument [Line Items]
Long-term borrowed funds	$ 3,095
Parent Company | Subordinated Debt | 4.150% fixed-rate subordinated debt, due September 2022
Debt Instrument [Line Items]
Long-term borrowed funds	$ 168	182
Interest rate	4.15%
Parent Company | Subordinated Debt | 3.750% fixed-rate subordinated debt, due July 2024
Debt Instrument [Line Items]
Long-term borrowed funds	$ 90	159
Interest rate	3.75%
Parent Company | Subordinated Debt | 4.023% fixed-rate subordinated debt, due October 2024
Debt Instrument [Line Items]
Long-term borrowed funds	$ 17	25
Interest rate	4.023%
Parent Company | Subordinated Debt | 4.350% fixed-rate subordinated debt, due August 2025
Debt Instrument [Line Items]
Long-term borrowed funds	$ 133	193
Interest rate	4.35%
Parent Company | Subordinated Debt | 4.300% fixed-rate subordinated debt, due December 2025
Debt Instrument [Line Items]
Long-term borrowed funds	$ 336	450
Interest rate	4.30%
Parent Company | Subordinated Debt | 3.750% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Long-term borrowed funds	$ 69	0
Interest rate	3.75%
Parent Company | Subordinated Debt | 4.300% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Long-term borrowed funds	$ 135	0
Interest rate	4.30%
Parent Company | Subordinated Debt | 4.350% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Long-term borrowed funds	$ 60	0
Interest rate	4.35%
Parent Company | Subordinated Debt | 2.638% fixed-rate subordinated debt, due September 2032
Debt Instrument [Line Items]
Long-term borrowed funds	$ 547	543
Parent Company | Senior Unsecured Notes | 2.375% fixed-rate senior unsecured debt, due July 2021 (1)
Debt Instrument [Line Items]
Long-term borrowed funds	$ 0	350
Interest rate	2.375%
Parent Company | Senior Unsecured Notes | 2.850% fixed-rate senior unsecured notes, due July 2026
Debt Instrument [Line Items]
Long-term borrowed funds	$ 497	497
Interest rate	2.85%
Parent Company | Senior Unsecured Notes | 2.500% fixed-rate senior unsecured notes, due February 2030
Debt Instrument [Line Items]
Long-term borrowed funds	$ 298	297
Interest rate	2.50%
Parent Company | Senior Unsecured Notes | 3.250% fixed-rate senior unsecured notes, due April 2030
Debt Instrument [Line Items]
Long-term borrowed funds	$ 745	745
Interest rate	3.25%
Parent Company | Senior Unsecured Notes | 2.638% fixed-rate subordinated debt, due September 2032
Debt Instrument [Line Items]
Interest rate	2.638%
CBNA and Other Subsidiaries
Debt Instrument [Line Items]
Long-term borrowed funds	$ 3,862
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Interest rate	3.75%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 4.300% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Interest rate	4.30%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 4.350% Fixed Rate Subordinated Debt, Due February 2031
Debt Instrument [Line Items]
Interest rate	4.35%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.550% senior unsecured notes, due May 2021
Debt Instrument [Line Items]
Long-term borrowed funds	$ 0	1,003
Interest rate	2.55%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.250% senior unsecured notes, due February 2022
Debt Instrument [Line Items]
Long-term borrowed funds	$ 708	716
Interest rate	3.25%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 0.941% Floating Rate Senior Unsecured Notes, Due February 2022
Debt Instrument [Line Items]
Long-term borrowed funds	$ 300	299
Interest rate	0.874%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 1.042% Floating Rate Senior Unsecured Notes, Due May 2022
Debt Instrument [Line Items]
Long-term borrowed funds	$ 250	250
Interest rate	0.951%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.650% senior unsecured notes, due May 2022
Debt Instrument [Line Items]
Long-term borrowed funds	$ 507	510
Interest rate	2.65%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.700% senior unsecured notes, due March 2023
Debt Instrument [Line Items]
Long-term borrowed funds	$ 520	527
Interest rate	3.70%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 1.201% Floating Rate Senior Unsecured Notes Due March 2023
Debt Instrument [Line Items]
Long-term borrowed funds	$ 250	249
Interest rate	1.096%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 2.250% senior unsecured notes, due April 2025
Debt Instrument [Line Items]
Long-term borrowed funds	$ 746	746
Interest rate	2.25%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750% senior unsecured notes, due February 2026
Debt Instrument [Line Items]
Long-term borrowed funds	$ 536	551
Interest rate	3.75%
CBNA and Other Subsidiaries | Senior Unsecured Notes | 3.750%, 4.300% And 4.350% Senior Notes Due 2031
Debt Instrument [Line Items]
Redeemable period prior to maturity	5 years
CBNA and Other Subsidiaries | Federal Home Loan Bank advances
Debt Instrument [Line Items]
Long-term borrowed funds	$ 18	19
Weighted average rate	0.909%
CBNA and Other Subsidiaries | Other
Debt Instrument [Line Items]
Long-term borrowed funds	$ 27	$ 35

BORROWED FUNDS - Maturities of

BORROWED FUNDS - Maturities of Long-term Borrowed Funds (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
2021	$ 4
2022	1,939
2023	771
2024	107
2025	1,229
2026 and thereafter	2,907
Total	6,957	$ 8,346
Parent Company
Debt Instrument [Line Items]
2021	0
2022	168
2023	0
2024	107
2025	469
2026 and thereafter	2,351
Total	3,095
CBNA and Other Subsidiaries
Debt Instrument [Line Items]
2021	4
2022	1,771
2023	771
2024	0
2025	760
2026 and thereafter	556
Total	$ 3,862

DERIVATIVES - Narrative (Detail

DERIVATIVES - Narrative (Details) $ in Millions	Jun. 30, 2021USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net gain (pre-tax) on derivatives expected to be reclassified in next 12 months	$ 86

DERIVATIVES - Schedule of Deriv

DERIVATIVES - Schedule of Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Derivative Assets
Derivative assets	$ 1,925	$ 2,153
Less: Gross amounts offset in the Consolidated Balance Sheets	(207)	(182)
Less: Cash collateral applied	(63)	(56)
Total net derivative fair values presented in the Consolidated Balance Sheets	1,655	1,915
Derivative Liabilities
Derivative Liabilities	861	634
Less: Gross amounts offset in the Consolidated Balance Sheets	(207)	(182)
Less: Cash collateral applied	(510)	(324)
Total net derivative fair values presented in the Consolidated Balance Sheets	144	128
Derivatives not designated as hedging instruments:
Derivative Assets
Derivative assets	1,909	2,152
Derivative Liabilities
Derivative Liabilities	854	631
Interest rate contracts
Derivative Assets
Derivative assets	1,134	1,566
Derivative Liabilities
Derivative Liabilities	197	217
Interest rate contracts | Derivatives designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	25,300	22,300
Derivative Assets
Derivative assets	16	1
Derivative Liabilities
Derivative Liabilities	7	3
Interest rate contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	144,982	149,021
Derivative Assets
Derivative assets	1,118	1,565
Derivative Liabilities
Derivative Liabilities	190	214
Foreign exchange contracts
Derivative Assets
Derivative assets	273	320
Derivative Liabilities
Derivative Liabilities	209	291
Foreign exchange contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	20,289	16,789
Derivative Assets
Derivative assets	273	320
Derivative Liabilities
Derivative Liabilities	209	291
Derivatives hedging commodity price risk
Derivative Assets
Derivative assets	424	62
Derivative Liabilities
Derivative Liabilities	427	61
Derivatives hedging commodity price risk | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	431	246
Derivative Assets
Derivative assets	424	62
Derivative Liabilities
Derivative Liabilities	427	61
TBA contracts
Derivative Assets
Derivative assets	5	8
Derivative Liabilities
Derivative Liabilities	28	65
TBA contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	10,924	11,149
Derivative Assets
Derivative assets	5	8
Derivative Liabilities
Derivative Liabilities	28	65
Other contracts
Derivative Assets
Derivative assets	89	197
Other contracts | Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional amount	6,717	8,051
Derivative Assets
Derivative assets	89	197
Derivative Liabilities
Derivative Liabilities	$ 0	$ 0

DERIVATIVES - Schedule of Fair

DERIVATIVES - Schedule of Fair Value Hedges (Details) - Interest rate swap - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest expense - long-term borrowed funds
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	$ (10)	$ 5	$ (38)	$ 98
Hedged Item	9	(3)	37	(95)
Interest and fees on loans and leases
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	0	0	0	17
Hedged Item	0	0	0	(17)
Interest income - investment securities
Derivative Instruments, Gain (Loss) [Line Items]
Derivative	4	(14)	32	(121)
Hedged Item	$ (4)	$ 14	$ (32)	$ 121

DERIVATIVES - Amounts Recorded

DERIVATIVES - Amounts Recorded in Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Carrying amount of hedged assets	$ 0	$ 0
Last-of-layer hedging amount	2,000
Carrying value of hedged asset in lay-of-layer hedging relationship	8,300	10,900
Debt securities available for sale
Derivative [Line Items]
Carrying amount of hedged assets	8,287	10,869
Cumulative amount of fair value hedging adjustments included in the carrying amount of the hedged items	64	96
Debt securities available for sale
Derivative [Line Items]
Carrying amount of the hedged liabilities	0	0
Long-term borrowed funds
Derivative [Line Items]
Carrying amount of the hedged liabilities	2,272	3,307
Cumulative amount of fair value hedging adjustments included in the carrying amount of long-term borrowed funds	$ 76	$ 112

DERIVATIVES - Effect of Derivat

DERIVATIVES - Effect of Derivative Instruments on Net Income and Stockholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pre-tax net gains (losses) recognized in OCI	$ 62	$ (11)	$ 34	$ 118
Interest Income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pretax net gains (losses) from OCI into income statement	49	55	95	60
Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of pretax net gains (losses) from OCI into income statement	$ (12)	$ (10)	$ (24)	$ (11)

DERIVATIVES - Effect of Custome

DERIVATIVES - Effect of Customer Derivatives and Economic Hedges on Net Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	$ (7)	$ 178	$ (108)	$ 534
Economic hedges | Foreign exchange and interest rate products | Customer interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	133	180	(215)	1,269
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging interest rate risk
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	(129)	(161)	227	(1,246)
Economic hedges | Foreign exchange and interest rate products | Customer foreign exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	19	23	(97)	(7)
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging foreign exchange risk
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	(11)	(50)	139	49
Economic hedges | Foreign exchange and interest rate products | Customer commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	319	7	413	(56)
Economic hedges | Foreign exchange and interest rate products | Derivatives hedging commodity price risk
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	(317)	(7)	(409)	57
Economic hedges | Mortgage banking fees | Residential loan commitments
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	67	14	(171)	154
Economic hedges | Mortgage banking fees | Derivatives hedging residential loan commitments and mortgage loans held for sale, at fair value
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	(141)	110	134	(19)
Economic hedges | Mortgage banking fees | Derivative contracts used to hedge residential MSRs
Derivative Instruments, Gain (Loss) [Line Items]
Amounts Recognized in Noninterest Income	$ 53	$ 62	$ (129)	$ 333

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 22,653	$ 21,950	$ 22,673	$ 22,201
Other comprehensive income (loss) before reclassifications	56	41	(272)	537
Amounts reclassified to the Consolidated Statements of Operations	(26)	(32)	(49)	(32)
Total other comprehensive income (loss), net of income taxes	30	9	(321)	505
Ending balance	23,199	22,418	23,199	22,418
Total AOCI
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(411)	85	(60)	(411)
Total other comprehensive income (loss), net of income taxes	30	9	(321)	505
Ending balance	(381)	94	(381)	94
Net Unrealized Gains (Losses) on Derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(57)	96	(11)	3
Other comprehensive income (loss) before reclassifications	46	(8)	25	88
Amounts reclassified to the Consolidated Statements of Operations	(27)	(34)	(52)	(37)
Total other comprehensive income (loss), net of income taxes	19	(42)	(27)	51
Ending balance	(38)	54	(38)	54
Net Unrealized Gains (Losses) on Debt Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	71	401	380	1
Other comprehensive income (loss) before reclassifications	10	49	(297)	449
Amounts reclassified to the Consolidated Statements of Operations	(3)	(2)	(5)	(2)
Total other comprehensive income (loss), net of income taxes	7	47	(302)	447
Ending balance	78	448	78	448
Employee Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(425)	(412)	(429)	(415)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified to the Consolidated Statements of Operations	4	4	8	7
Total other comprehensive income (loss), net of income taxes	4	4	8	7
Ending balance	$ (421)	$ (408)	$ (421)	(408)
Cumulative Effect, Period Of Adoption, Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance				$ (331)

STOCKHOLDERS' EQUITY - Treasury

STOCKHOLDERS' EQUITY - Treasury Stock Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Equity [Abstract]
Repurchase of common stock	$ 95	$ 270
Treasury stock purchased (in shares)	2,244,924

STOCKHOLDERS' EQUITY - Authoriz

STOCKHOLDERS' EQUITY - Authorized Preferred Shares (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 11, 2021	Dec. 31, 2020
Preferred Stock
Preferred stock, authorized (in shares)	100,000,000		100,000,000
Preferred stock, par value (in dollars per share)	$ 25		$ 25
Preferred stock, issued (in shares)	2,050,000		2,000,000
Preferred stock, value, issued	$ 2,014,000,000		$ 1,965,000,000
Series A Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	0		250,000
Preferred stock, value, issued	$ 0		$ 247,000,000
Series B Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, value, issued	$ 296,000,000		$ 296,000,000
Series C Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, value, issued	$ 297,000,000		$ 297,000,000
Series D Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	300,000		300,000
Preferred stock, value, issued	$ 293,000,000		$ 293,000,000
Liquidation preference per depository share (usd per share)	$ 25
Depositary shares issued (in shares)	12,000,000
Depository share interest percentage	2.50%
Series E Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	450,000		450,000
Preferred stock, value, issued	$ 437,000,000		$ 437,000,000
Liquidation preference per depository share (usd per share)	$ 25
Depositary shares issued (in shares)	18,000,000
Depository share interest percentage	2.50%
Series F Preferred Stock
Preferred Stock
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Preferred stock, issued (in shares)	400,000		400,000
Preferred stock, value, issued	$ 395,000,000		$ 395,000,000
Series G Preferred Stock
Preferred Stock
Preferred stock, par value (in dollars per share)		$ 25
Preferred stock, liquidation preference per share (in dollars per share)		$ 1,000
Preferred stock, issued (in shares)	300,000		0
Preferred stock, value, issued	$ 296,000,000	$ 300,000,000	$ 0

STOCKHOLDERS' EQUITY - Dividend

STOCKHOLDERS' EQUITY - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Class of Stock [Line Items]
Dividends declared per share of common stock (in usd per share)	$ 0.39	$ 0.39	$ 0.78	$ 0.78
Common stock dividends declared and paid	$ 168	$ 168	$ 335	$ 336
Preferred stock dividends declared and paid	$ 32	$ 28	$ 55	$ 50
Series A Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	$ 10.50	$ 13.48	$ 20.99	$ 40.98
Series B Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	30	30	30	30
Series C Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	15.94	15.94	31.88	31.88
Series D Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	15.88	15.88	31.75	31.75
Series E Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	12.50	12.50	25	25
Series F Preferred Stock
Class of Stock [Line Items]
Dividends declared per share of preferred stock (in usd per share)	$ 14.13	$ 0	$ 28.25	$ 0
Dividends Declared
Class of Stock [Line Items]
Common stock dividends declared and paid	$ 168	$ 168	$ 335	$ 336
Preferred stock dividends declared and paid	32	28	55	50
Dividends Declared | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	2	3	5	10
Dividends Declared | Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	9	9	9	9
Dividends Declared | Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	5	10	10
Dividends Declared | Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	4	5	9	10
Dividends Declared | Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	6	11	11
Dividends Declared | Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	0	11	0
Dividends Paid
Class of Stock [Line Items]
Common stock dividends declared and paid	168	168	335	336
Preferred stock dividends declared and paid	23	22	55	45
Dividends Paid | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	2	7	5	7
Dividends Paid | Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	0	0	9	9
Dividends Paid | Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	5	5	10	10
Dividends Paid | Series D Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	4	5	9	10
Dividends Paid | Series E Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	6	5	11	9
Dividends Paid | Series F Preferred Stock
Class of Stock [Line Items]
Preferred stock dividends declared and paid	$ 6	$ 0	$ 11	$ 0

STOCKHOLDERS' EQUITY - Preferre

STOCKHOLDERS' EQUITY - Preferred Stock Narrative (Details) - USD ($)	Jun. 11, 2021	Jun. 30, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Preferred stock, value, issued		$ 2,014,000,000	$ 1,965,000,000
Preferred stock, issued (in shares)		2,050,000	2,000,000
Preferred stock, par value (in dollars per share)		$ 25	$ 25
US Treasury (UST) Interest Rate, Five-Year
Class of Stock [Line Items]
Preferred stock, dividend payment rate, basis spread on variable rate	3.215%
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, value, issued		$ 0	$ 247,000,000
Preferred stock, issued (in shares)		0	250,000
Preferred stock, dividend rate		5.50%
Preferred stock, liquidation preference per share (in dollars per share)		$ 1,000
Series G Preferred Stock
Class of Stock [Line Items]
Preferred stock, value, issued	$ 300,000,000	$ 296,000,000	$ 0
Preferred stock, issued (in shares)		300,000	0
Preferred stock, dividend rate	4.00%
Preferred stock, par value (in dollars per share)	$ 25
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000
Proceeds from issuance of stock	$ 296,000,000
Redemption notice period	90 days
Redemption price per share (usd per share)	$ 1,000

COMMITMENTS AND CONTINGENCIES -

COMMITMENTS AND CONTINGENCIES - Narrative (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2003
Minimum
Risk Participation Agreements [Abstract]
Risk participation agreements, average term	1 year
Maximum
Risk Participation Agreements [Abstract]
Risk participation agreements, average term	8 years
Marketing rights
Marketing Rights [Abstract]
Commitment period		25 years
Financial standby letters of credit
Letters of Credit [Abstract]
Letters of credit outstanding, term	ten years
Commercial letters of credit
Letters of Credit [Abstract]
Letters of credit outstanding, term	one year

COMMITMENTS AND CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES - Schedule of Outstanding Off-balance sheet Arrangements (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Other Commitments [Line Items]
Commitment amount	$ 78,845	$ 76,580
Commitments to extend credit
Other Commitments [Line Items]
Commitment amount	76,761	74,160
Letters of credit
Other Commitments [Line Items]
Commitment amount	1,926	2,239
Risk participation agreements
Other Commitments [Line Items]
Commitment amount	68	98
Loans sold with recourse
Other Commitments [Line Items]
Commitment amount	64	54
Marketing rights
Other Commitments [Line Items]
Commitment amount	$ 26	$ 29

FAIR VALUE MEASUREMENTS - Resid

FAIR VALUE MEASUREMENTS - Residential Mortgage and Commercial Real Estate Loans Held For Sale (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate Fair Value	$ 3,616	$ 3,564
Residential loans held for sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate Fair Value	3,499	3,416
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate Fair Value	3,616	3,564
Level 2 | Residential loans held for sale
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate Fair Value	3,499	3,416
Aggregate Unpaid Principal	3,388	3,260
Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal	111	156
Level 2 | Commercial and commercial real estate loans held for sale, at fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate Fair Value	117	148
Aggregate Unpaid Principal	119	153
Aggregate Fair Value Greater (Less) Aggregate Unpaid Principal	$ (2)	$ (5)

FAIR VALUE MEASUREMENTS - Sched

FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Assets
Securities available for sale	[1]	$ 24,583	$ 22,942
Loans held for sale, at fair value		3,616	3,564
Mortgage servicing rights		902	658
Derivative assets		1,925	2,153
Equity securities, at fair value		80	66
Total assets		31,106	29,383
Liabilities
Total derivative liabilities		861	634
Total liabilities		861	634
Interest rate contracts
Assets
Derivative assets		1,134	1,566
Liabilities
Total derivative liabilities		197	217
Foreign exchange contracts
Assets
Derivative assets		273	320
Liabilities
Total derivative liabilities		209	291
Derivatives hedging commodity price risk
Assets
Derivative assets		424	62
Liabilities
Total derivative liabilities		427	61
TBA contracts
Assets
Derivative assets		5	8
Liabilities
Total derivative liabilities		28	65
Other contracts
Assets
Derivative assets		89	197
Level 1
Assets
Securities available for sale		11	11
Loans held for sale, at fair value		0	0
Derivative assets		0	0
Equity securities, at fair value		80	66
Total assets		91	77
Liabilities
Total derivative liabilities		0	0
Total liabilities		0	0
Level 1 | Interest rate contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 1 | Foreign exchange contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 1 | Derivatives hedging commodity price risk
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 1 | TBA contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 1 | Other contracts
Assets
Derivative assets		0	0
Level 2
Assets
Securities available for sale		24,572	22,931
Loans held for sale, at fair value		3,616	3,564
Derivative assets		1,836	1,956
Equity securities, at fair value		0	0
Total assets		30,024	28,451
Liabilities
Total derivative liabilities		861	634
Total liabilities		861	634
Level 2 | Interest rate contracts
Assets
Derivative assets		1,134	1,566
Liabilities
Total derivative liabilities		197	217
Level 2 | Foreign exchange contracts
Assets
Derivative assets		273	320
Liabilities
Total derivative liabilities		209	291
Level 2 | Derivatives hedging commodity price risk
Assets
Derivative assets		424	62
Liabilities
Total derivative liabilities		427	61
Level 2 | TBA contracts
Assets
Derivative assets		5	8
Liabilities
Total derivative liabilities		28	65
Level 2 | Other contracts
Assets
Derivative assets		0	0
Level 3
Assets
Securities available for sale		0	0
Loans held for sale, at fair value		0	0
Derivative assets		89	197
Equity securities, at fair value		0	0
Total assets		991	855
Liabilities
Total derivative liabilities		0	0
Total liabilities		0	0
Level 3 | Interest rate contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 3 | Foreign exchange contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 3 | Derivatives hedging commodity price risk
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 3 | TBA contracts
Assets
Derivative assets		0	0
Liabilities
Total derivative liabilities		0	0
Level 3 | Other contracts
Assets
Derivative assets		89	197
Mortgage-backed securities
Assets
Securities available for sale		24,392	22,928
Mortgage-backed securities | Level 1
Assets
Securities available for sale		0	0
Mortgage-backed securities | Level 2
Assets
Securities available for sale		24,392	22,928
Mortgage-backed securities | Level 3
Assets
Securities available for sale		0	0
Collateralized loan obligations, at fair value
Assets
Securities available for sale		177
Collateralized loan obligations, at fair value | Level 1
Assets
Securities available for sale		0
Collateralized loan obligations, at fair value | Level 2
Assets
Securities available for sale		177
Collateralized loan obligations, at fair value | Level 3
Assets
Securities available for sale		0
State and political subdivisions
Assets
Securities available for sale		3	3
State and political subdivisions | Level 1
Assets
Securities available for sale		0	0
State and political subdivisions | Level 2
Assets
Securities available for sale		3	3
State and political subdivisions | Level 3
Assets
Securities available for sale		0	0
U.S. Treasury and other
Assets
Securities available for sale		11	11
U.S. Treasury and other | Level 1
Assets
Securities available for sale		11	11
U.S. Treasury and other | Level 2
Assets
Securities available for sale		0	0
U.S. Treasury and other | Level 3
Assets
Securities available for sale		0	0
Residential loans held for sale
Assets
Loans held for sale, at fair value		3,499	3,416
Residential loans held for sale | Level 1
Assets
Loans held for sale, at fair value		0	0
Residential loans held for sale | Level 2
Assets
Loans held for sale, at fair value		3,499	3,416
Residential loans held for sale | Level 3
Assets
Loans held for sale, at fair value		0	0
Commercial loans held for sale
Assets
Loans held for sale, at fair value		117	148
Commercial loans held for sale | Level 1
Assets
Loans held for sale, at fair value		0	0
Commercial loans held for sale | Level 2
Assets
Loans held for sale, at fair value		117	148
Commercial loans held for sale | Level 3
Assets
Loans held for sale, at fair value		0	0
Residential mortgages (2)
Assets
Mortgage servicing rights		902	658
Residential mortgages (2) | Level 1
Assets
Mortgage servicing rights		0	0
Residential mortgages (2) | Level 2
Assets
Mortgage servicing rights		0	0
Residential mortgages (2) | Level 3
Assets
Mortgage servicing rights		$ 902	$ 658
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

FAIR VALUE MEASUREMENTS - Sch_2

FAIR VALUE MEASUREMENTS - Schedule of Assets Measured on Recurring Basis Level 3 Rollforward (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Residential mortgages (2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 893	$ 577	$ 658	$ 642
Issuances	122	86	209	153
Settlements	(47)	(46)	(105)	(86)
Change in fair value during the period	(66)	(49)	140	(331)
Ending balance	902	568	902	568
Other Derivative Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	38	143	197	19
Issuances	81	234	243	405
Settlements	(97)	(344)	(180)	(420)
Change in fair value during the period	67	140	(171)	169
Ending balance	$ 89	173	$ 89	173
Cumulative Effect, Period Of Adoption, Adjustment | Residential mortgages (2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		0		190
Cumulative Effect, Period Of Adoption, Adjustment | Other Derivative Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		0		0
Cumulative Effect, Period Of Adoption, Adjusted Balance | Residential mortgages (2)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		577		832
Cumulative Effect, Period Of Adoption, Adjusted Balance | Other Derivative Contracts
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		$ 143		$ 19

FAIR VALUE MEASUREMENTS - Unobs

FAIR VALUE MEASUREMENTS - Unobservable Inputs Used and Valuation Techniques (Details) - Level 3	Jun. 30, 2021
Mortgage servicing rights | Minimum | Discounted Cash Flow | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.1056
Mortgage servicing rights | Minimum | Discounted Cash Flow | Option adjusted spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	(14.90)
Mortgage servicing rights | Maximum | Discounted Cash Flow | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.2954
Mortgage servicing rights | Maximum | Discounted Cash Flow | Option adjusted spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	10.60
Mortgage servicing rights | Weighted Average | Discounted Cash Flow | Constant prepayment rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	0.119
Mortgage servicing rights | Weighted Average | Discounted Cash Flow | Option adjusted spread
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgage servicing rights, measurement input	5.81
Customer commodity contracts | Minimum | Internal Model | Pull through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	0.1038
Customer commodity contracts | Minimum | Internal Model | MSR value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	(0.0021)
Customer commodity contracts | Maximum | Internal Model | Pull through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	0.9990
Customer commodity contracts | Maximum | Internal Model | MSR value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	1.5476
Customer commodity contracts | Weighted Average | Internal Model | Pull through rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	0.8166
Customer commodity contracts | Weighted Average | Internal Model | MSR value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Other derivative contracts, measurement input	0.9901

FAIR VALUE MEASUREMENTS - Sch_3

FAIR VALUE MEASUREMENTS - Schedule of Gain (Loss) on Assets and Liabilities Measured on Nonrecurring Basis Included in Earnings (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Nonrecurring measurement basis | Collateral-dependent loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) included in earnings on assets measured on a nonrecurring basis	$ 0	$ (22)	$ (19)	$ (44)

FAIR VALUE MEASUREMENTS - Sch_4

FAIR VALUE MEASUREMENTS - Schedule of Fair Value Measurements on a Nonrecurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Premises and equipment, net	$ 735	$ 759
Nonrecurring measurement basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans	620	758
Level 1 | Nonrecurring measurement basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans	0	0
Level 2 | Nonrecurring measurement basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans	620	758
Level 3 | Nonrecurring measurement basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent loans	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Sch_5

FAIR VALUE MEASUREMENTS - Schedule of Financial Instruments not Recorded at Fair Value (Details) - USD ($) $ in Millions		Jun. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity, carrying value	[1]	$ 2,711	$ 3,235
Securities held-to-maturity, fair value		2,790	3,357
Other loans held for sale, carrying value		82	439
Other loans held for sale, fair value		82	439
Loans and leases		122,581	123,090
Loans and leases, fair value		123,022	123,678
Equity securities, at cost, carrying value		602	604
Equity securities, at cost, fair value		602	604
Deposits, carrying value		150,636	147,164
Deposits, fair value		150,658	147,223
Short-term borrowed funds, carrying value		62	243
Short-term borrowed funds, fair value		62	243
Long-term borrowed funds, carrying value		6,957	8,346
Long-term borrowed funds, fair value		7,307	8,850
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity, carrying value		0	0
Securities held-to-maturity, fair value		0	0
Other loans held for sale, carrying value		0	0
Other loans held for sale, fair value		0	0
Loans and leases		0	0
Loans and leases, fair value		0	0
Equity securities, at cost, carrying value		0	0
Equity securities, at cost, fair value		0	0
Deposits, carrying value		0	0
Deposits, fair value		0	0
Short-term borrowed funds, carrying value		0	0
Short-term borrowed funds, fair value		0	0
Long-term borrowed funds, carrying value		0	0
Long-term borrowed funds, fair value		0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity, carrying value		1,887	2,342
Securities held-to-maturity, fair value		1,964	2,464
Other loans held for sale, carrying value		0	0
Other loans held for sale, fair value		0	0
Loans and leases		620	758
Loans and leases, fair value		620	758
Equity securities, at cost, carrying value		594	596
Equity securities, at cost, fair value		594	596
Deposits, carrying value		150,636	147,164
Deposits, fair value		150,658	147,223
Short-term borrowed funds, carrying value		62	243
Short-term borrowed funds, fair value		62	243
Long-term borrowed funds, carrying value		6,957	8,346
Long-term borrowed funds, fair value		7,307	8,850
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity, carrying value		824	893
Securities held-to-maturity, fair value		826	893
Other loans held for sale, carrying value		82	439
Other loans held for sale, fair value		82	439
Loans and leases		121,961	122,332
Loans and leases, fair value		122,402	122,920
Equity securities, at cost, carrying value		8	8
Equity securities, at cost, fair value		8	8
Deposits, carrying value		0	0
Deposits, fair value		0	0
Short-term borrowed funds, carrying value		0	0
Short-term borrowed funds, fair value		0	0
Long-term borrowed funds, carrying value		0	0
Long-term borrowed funds, fair value		$ 0	$ 0
[1]	Includes only collateral pledged by the Company where counterparties have the right to sell or pledge the collateral.

NONINTEREST INCOME - Narrative

NONINTEREST INCOME - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Trust and investment services fees
Disaggregation of Revenue [Line Items]
Trailing commission income	$ 4	$ 3	$ 8	$ 7

NONINTEREST INCOME - Components

NONINTEREST INCOME - Components of Revenue from Contracts with Customers (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 310	$ 227	$ 595	$ 521
Total noninterest income	485	590	1,027	1,087
Operating Segments
Disaggregation of Revenue [Line Items]
Total revenue from other sources	175	363	432	566
Total noninterest income	485	590	1,027	1,087
Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	190	146	369	336
Consumer Banking | Operating Segments
Disaggregation of Revenue [Line Items]
Total revenue from other sources	93	282	265	449
Total noninterest income	283	428	634	785
Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	120	81	226	185
Commercial Banking | Operating Segments
Disaggregation of Revenue [Line Items]
Total revenue from other sources	58	63	122	84
Total noninterest income	178	144	348	269
Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other | Operating Segments
Disaggregation of Revenue [Line Items]
Total revenue from other sources	24	18	45	33
Total noninterest income	24	18	45	33
Service charges and fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	100	84	199	202
Service charges and fees | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	74	59	148	151
Service charges and fees | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	26	25	51	51
Service charges and fees | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Card fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	64	49	118	104
Card fees | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	56	42	103	87
Card fees | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	8	7	15	17
Card fees | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Capital markets fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	84	48	156	113
Capital markets fees | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Capital markets fees | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	84	48	156	113
Capital markets fees | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Trust and investment services fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	60	45	118	98
Trust and investment services fees | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	60	45	118	98
Trust and investment services fees | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Trust and investment services fees | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other banking fees
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2	1	4	4
Other banking fees | Consumer Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0	0	0
Other banking fees | Commercial Banking
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2	1	4	4
Other banking fees | Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0	$ 0	$ 0

NONINTEREST INCOME - Other Inco

NONINTEREST INCOME - Other Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Bank-owned life insurance income	$ 16	$ 14	$ 30	$ 28

OTHER OPERATING EXPENSE (Detail

OTHER OPERATING EXPENSE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Marketing	$ 31	$ 27	$ 50	$ 51
Other	62	84	134	171
Other operating expense	$ 93	$ 111	$ 184	$ 222

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator (basic and diluted):
Net income	$ 648	$ 253	$ 1,259	$ 287
Less: Preferred stock dividends	32	28	55	50
Net income available to common stockholders	$ 616	$ 225	$ 1,204	$ 237
Denominator:
Weighted-average common shares outstanding - basic (in shares)	425,948,706	426,613,053	425,951,197	427,165,737
Dilutive common shares: share-based awards (in shares)	1,612,866	953,867	1,717,045	1,126,843
Weighted-average common shares outstanding - diluted (in shares)	427,561,572	427,566,920	427,668,242	428,292,580
Earnings per common share:
Basic (in dollars per share)	$ 1.45	$ 0.53	$ 2.83	$ 0.56
Diluted (in dollars per share)	$ 1.44	$ 0.53	$ 2.81	$ 0.55
Share-based awards excluded from diluted earnings per share computation (in shares)	76,984	1,579,361	43,877	1,211,751

BUSINESS OPERATING SEGMENTS - N

BUSINESS OPERATING SEGMENTS - Narrative (Details)	6 Months Ended
	Jun. 30, 2021segment
Segment Reporting [Abstract]
Number of segments	2

BUSINESS OPERATING SEGMENTS - A

BUSINESS OPERATING SEGMENTS - Assets by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net interest income	$ 1,124	$ 1,160	$ 2,241	$ 2,320
Noninterest income	485	590	1,027	1,087
Total revenue	1,609	1,750	3,268	3,407
Noninterest expense	991	979	2,009	1,991
Profit (loss) before provision for credit losses	618	771	1,259	1,416
Provision for credit losses	(213)	464	(353)	1,064
Income before income tax expense	831	307	1,612	352
Income tax expense (benefit)	183	54	353	65
NET INCOME	648	253	1,259	287
Total average assets	184,456	179,793	183,518	173,485
Operating Segments
Segment Reporting Information [Line Items]
Noninterest income	485	590	1,027	1,087
Operating Segments | Consumer Banking
Segment Reporting Information [Line Items]
Net interest income	897	814	1,760	1,607
Noninterest income	283	428	634	785
Total revenue	1,180	1,242	2,394	2,392
Noninterest expense	751	735	1,501	1,473
Profit (loss) before provision for credit losses	429	507	893	919
Provision for credit losses	45	80	104	177
Income before income tax expense	384	427	789	742
Income tax expense (benefit)	98	107	201	186
NET INCOME	286	320	588	556
Total average assets	75,600	71,634	75,443	70,024
Operating Segments | Commercial Banking
Segment Reporting Information [Line Items]
Net interest income	419	419	840	784
Noninterest income	178	144	348	269
Total revenue	597	563	1,188	1,053
Noninterest expense	226	213	453	434
Profit (loss) before provision for credit losses	371	350	735	619
Provision for credit losses	34	70	135	113
Income before income tax expense	337	280	600	506
Income tax expense (benefit)	72	59	124	106
NET INCOME	265	221	476	400
Total average assets	57,527	65,280	57,632	62,142
Other
Segment Reporting Information [Line Items]
Net interest income	(192)	(73)	(359)	(71)
Total revenue	(168)	(55)	(314)	(38)
Noninterest expense	14	31	55	84
Profit (loss) before provision for credit losses	(182)	(86)	(369)	(122)
Provision for credit losses	(292)	314	(592)	774
Income before income tax expense	110	(400)	223	(896)
Income tax expense (benefit)	13	(112)	28	(227)
NET INCOME	97	(288)	195	(669)
Total average assets	$ 51,329	$ 42,879	$ 50,443	$ 41,319

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - Subsequent Event - Investor Acquisition - USD ($) $ / shares in Units, $ in Billions	Jul. 28, 2021	Jul. 27, 2021
Subsequent Event [Line Items]
Purchase price	$ 3.5
Share price (in dollars per share)		$ 44.32
Cash consideration, in dollars per share for each share of investors stock (in dollars per share)	$ 1.46
Assets of acquiree	$ 26.8
Loans receivable, net	21.1
Deposits	$ 19.4
Combined Company's Outstanding Shares
Subsequent Event [Line Items]
Ownership percentage by investors of combined company's outstanding shares	14.00%
Common Stock
Subsequent Event [Line Items]
Stock consideration (in dollars per each share)	$ 0.297