Consolidated Cash Flow Statements - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net income	$ 15,120	$ 11,179	$ 9,237
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Deferred income taxes	4	(250)	165
Stock-based compensation expense	2,085	1,312	1,153
Depreciation and amortization	4,216	3,769	2,643
Provision for credit losses	4	761	161
Other operating adjustments	(147)	274	(195)
Changes in assets and liabilities:
Trading assets, net of Trading liabilities	9,075	15,551	(13,667)
Securities borrowed	(17,322)	(5,076)	9,764
Securities loaned	4,568	(1,541)	(3,402)
Customer and other receivables and other assets	774	(29,774)	233
Customer and other payables and other liabilities	7,758	10,187	19,942
Securities purchased under agreements to resell	(3,765)	(28,010)	10,298
Securities sold under agreements to repurchase	11,601	(3,613)	4,441
Net cash provided by (used for) operating activities	33,971	(25,231)	40,773
Proceeds from (payments for):
Other assets—Premises, equipment and software, net	(2,308)	(1,444)	(1,826)
Changes in loans, net	(36,106)	(17,949)	(17,359)
Investment securities:
Purchases	(69,571)	(59,777)	(42,586)
Proceeds from sales	20,652	13,750	17,151
Proceeds from paydowns and maturities	40,916	24,517	12,012
Other investing activities	(832)	(802)	(953)
Net cash provided by (used for) investing activities	(49,897)	(37,898)	(33,561)
Net proceeds from (payments for):
Other secured financings	(625)	2,794	3,695
Deposits	36,897	75,417	2,513
Issuance of preferred stock, net of issuance costs	1,275	0	497
Proceeds from issuance of Borrowings	90,273	60,726	30,605
Payments for:
Borrowings	(70,124)	(50,484)	(40,548)
Repurchases of common stock and employee tax withholdings	(12,075)	(1,890)	(5,954)
Cash dividends	(4,171)	(2,739)	(2,627)
Other financing activities	97	(40)	(147)
Net cash provided by (used for) financing activities	41,547	83,784	(11,966)
Effect of exchange rate changes on cash and cash equivalents	(3,550)	2,828	(271)
Net increase (decrease) in cash and cash equivalents	22,071	23,483	(5,025)
Cash and cash equivalents, at beginning of period	105,654	82,171	87,196
Cash and cash equivalents, at end of period	127,725	105,654	82,171
Supplemental Disclosure of Cash Flow Information
Cash payments for interest	1,303	4,120	12,511
Cash payments for income taxes, net of refunds	4,231	2,591	1,908
Eaton Vance Corp.
Investment securities:
Cash paid as part of the Eaton Vance acquisition, net of cash acquired	(2,648)	0	0
E-TRADE
Investment securities:
Cash acquired as part of the E*TRADE acquisition	$ 0	$ 3,807	$ 0