Consolidated Cash Flow Statement - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income	$ 3,715	$ 4,168
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Stock-based compensation expense	431	518
Depreciation and amortization	942	887
Provision for credit losses	57	(98)
Other operating adjustments	51	(95)
Changes in assets and liabilities:
Trading assets, net of Trading liabilities	5,069	20,463
Securities borrowed	(21,282)	10,242
Securities loaned	1,923	695
Customer and other receivables and other assets	1,227	(18,721)
Customer and other payables and other liabilities	17,994	3,270
Securities purchased under agreements to resell	(7,768)	1,513
Securities sold under agreements to repurchase	(2,120)	4,037
Net cash provided by (used for) operating activities	239	26,879
Proceeds from (payments for):
Other assets—Premises, equipment and software, net	(652)	(525)
Changes in loans, net	(7,479)	(6,474)
Investment securities:
Purchases	(17,459)	(32,333)
Proceeds from sales	18,469	6,825
Proceeds from paydowns and maturities	7,403	12,638
Cash paid as part of the Eaton Vance acquisition, net of cash acquired	0	(2,648)
Other investing activities	(124)	(44)
Net cash provided by (used for) investing activities	158	(22,561)
Net proceeds from (payments for):
Other secured financings	(636)	(3,798)
Deposits	5,834	12,391
Proceeds from issuance of Borrowings	20,284	24,112
Payments for:
Borrowings	(11,094)	(19,774)
Repurchases of common stock and employee tax withholdings	(3,681)	(2,582)
Cash dividends	(1,314)	(755)
Other financing activities	(102)	(30)
Net cash provided by (used for) financing activities	9,291	9,564
Effect of exchange rate changes on cash and cash equivalents	(1,327)	(1,418)
Net increase (decrease) in cash and cash equivalents	8,361	12,464
Cash and cash equivalents, at beginning of period	127,725	105,654
Cash and cash equivalents, at end of period	136,086	118,118
Supplemental Disclosure of Cash Flow Information
Cash payments for interest	623	586
Cash payments for income taxes, net of refunds	$ 383	$ 339