Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities
Net income	$ 2,235	$ 367
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provisions for credit losses	(675)	2,621
Depreciation and amortization	422	337
Deferred taxes and other	(81)	333
Stock-based compensation	98	43
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions:
Other assets	477	309
Accounts payable & other liabilities	(196)	(6,229)
Net cash provided by (used in) operating activities	2,280	(2,219)
Cash Flows from Investing Activities
Sale of investment securities	37	0
Maturities and redemptions of investment securities	553	4,376
Purchase of investments	(366)	(997)
Net decrease in Card Member loans and receivables, and other loans	4,869	18,883
Purchase of premises and equipment, net of sales: 2021, $3; 2020, nil	(319)	(335)
Net cash provided by investing activities	4,774	21,927
Cash Flows from Financing Activities
Net increase in customer deposits	2,327	4,701
Net decrease in short-term borrowings	(271)	(2,880)
Payments of long-term debt	(750)	(5,849)
Issuance of American Express common shares	31	16
Repurchase of American Express common shares and other	(513)	(1,023)
Dividends paid	(363)	(383)
Net cash provided by (used in) financing activities	461	(5,418)
Effect of foreign currency exchange rates on cash and cash equivalents	(200)	(128)
Net increase in cash and cash equivalents	7,315	14,162
Cash and cash equivalents at beginning of period	32,965	24,446
Cash and cash equivalents at end of period	$ 40,280	$ 38,608