Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income before noncontrolling interests	$ 1,609	$ 2,073	$ 1,294
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	420	123	220
Changes in fair values of equity warrant assets, net of proceeds from exercises	(60)	(26)	(2)
Changes in fair values of derivatives, net	193	52	(82)
Gains (losses) on investment securities, net	285	(761)	(421)
Distributions of earnings from non-marketable and other equity securities	57	201	86
Depreciation and amortization	222	151	101
Amortization of premiums and discounts on investment securities, net	388	451	75
Amortization of share-based compensation	183	136	84
Amortization of deferred loan fees	(259)	(269)	(174)
Deferred income tax (benefit) expense	591	(8)	7
Excess tax benefit from exercise of stock options and vesting of restricted shares	(18)	(40)	(6)
Losses from the write-off of premises and equipment and right-of-use assets	2	39	30
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(45)	(185)	(26)
Accounts receivable and payable, net	6	17	19
Income tax receivable and payable, net	(179)	(122)	98
Accrued compensation	(48)	332	191
Proceeds from termination of interest rate swaps	0	0	228
Other, net	(483)	(296)	(310)
Net cash provided by operating activities	2,864	1,868	1,412
Cash flows from investing activities:
Purchases of AFS securities	(12,724)	(12,147)	(23,208)
Proceeds from sales of AFS securities	9,495	1,591	2,654
Proceeds from maturities and paydowns of AFS securities	1,452	4,768	4,184
Purchases of HTM securities	(4,961)	(85,519)	(6,778)
Proceeds from maturities and paydowns of HTM securities	11,469	13,428	4,036
Purchases of non-marketable and other equity securities	(381)	(365)	(201)
Proceeds from sales and distributions of capital of non-marketable and other equity securities	106	666	148
Net increase in loans	(7,879)	(13,726)	(11,927)
Purchases of premises and equipment	(215)	(113)	(87)
Business acquisitions, net	0	1,081	(27)
Net cash used for investing activities	(3,638)	(90,336)	(31,206)
Cash flows from financing activities:
Net increase (decrease) in deposits	(16,094)	78,238	40,224
Net increase (decrease) in short-term borrowings	13,494	21	6
Proceeds from issuance of long-term debt	2,795	1,636	495
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(19)	(80)	(23)
Net proceeds from the issuance of preferred stock	0	3,306	0
Payment of preferred stock dividends	(163)	(63)	(17)
Common stock repurchase	0	0	(60)
Proceeds from issuance of common stock, net	(22)	2,374	31
Net cash provided (used for) by financing activities	(9)	85,432	40,656
Net increase (decrease) in cash and cash equivalents	(783)	(3,036)	10,862
Cash and cash equivalents at beginning of period	14,586	17,622	6,760
Cash and cash equivalents at end of period	13,803	14,586	17,622
Cash paid during the period for:
Interest	981	93	84
Income taxes, net of refunds	96	739	299
Noncash items during the period:
Changes in unrealized gains and losses on AFS securities, net of tax	(1,832)	(488)	394
Distributions of stock from investments	2	72	12
Transfers from AFS securities to HTM	$ 0	$ 8,953	$ 0