Interim Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income before noncontrolling interests	$ 1,190	$ 381
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	54	310
Gains on investment securities, net	(472)	(81)
Distributions of earnings from non-marketable and other equity securities	104	49
Depreciation and amortization	61	50
Amortization of premiums and discounts on investment securities, net	166	30
Amortization of share-based compensation	55	39
Amortization of deferred loan fees	(115)	(78)
Deferred income tax expense (benefit)	33	(73)
Excess tax benefit from exercise of stock options and vesting of restricted shares	(30)	(2)
Changes in other assets and liabilities:
Accrued interest receivable and payable, net	(86)	16
Accounts receivable and payable, net	18	3
Income tax receivable and payable, net	(49)	131
Accrued compensation	(137)	(115)
Foreign exchange spot contracts, net	245	(6)
Proceeds from termination of interest rate swaps	0	228
Other, net	(309)	(99)
Net cash provided by operating activities	695	745
Cash flows from investing activities:
Purchases of AFS securities	(2,289)	(8,071)
Proceeds from sales of AFS securities	0	2,654
Proceeds from maturities and paydowns of AFS securities	2,948	1,550
Purchases of HTM securities	(42,683)	(568)
Proceeds from maturities and paydowns of HTM securities	5,104	1,544
Purchases of non-marketable and other equity securities	(75)	(119)
Proceeds from sales and distributions of capital of non-marketable and other securities	568	58
Net increase in loans	(5,573)	(3,530)
Purchases of premises and equipment	(41)	(51)
Net cash used for investing activities	(42,041)	(6,533)
Cash flows from financing activities:
Net increase in deposits	43,856	12,748
Net increase in short-term borrowings	13	34
Proceeds from issuance of long-term debt	990	495
(Distributions to noncontrolling interests), net of contributions from noncontrolling interests	(51)	(14)
Net proceeds from the issuance of preferred stock	1,724	0
Payment of preferred stock dividend	(17)	(8)
Common stock repurchases	0	(60)
Proceeds from issuance of common stock, ESPP and ESOP, net of restricted stock awards	1,115	13
Net cash provided by financing activities	47,630	13,208
Net increase in cash and cash equivalents	6,284	7,420
Cash and cash equivalents at beginning of period	17,675	6,782
Cash and cash equivalents at end of period	23,959	14,202
Cash paid during the period for:
Interest	31	67
Income taxes	370	58
Noncash items during the period:
Changes in unrealized gains and losses on AFS securities, net of tax	(400)	383
Distributions of stock from investments	43	11
Transfers from AFS securities to HTM	5,766	0
Equity warrant assets
Changes in fair values of derivatives, net	(40)	21
Derivative
Changes in fair values of derivatives, net	$ 7	$ (59)