Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows from Operating Activities
Net income	$ 4,515	$ 624
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provisions for credit losses	(1,281)	4,176
Depreciation and amortization	834	711
Deferred taxes and other	(294)	335
Stock-based compensation	183	109
Changes in operating assets and liabilities, net of effects of acquisitions and dispositions:
Other assets	282	(792)
Accounts payable & other liabilities	1,226	(5,252)
Net cash provided by (used in) operating activities	5,465	(89)
Cash Flows from Investing Activities
Sale of investment securities	37	36
Maturities and redemptions of investment securities	9,684	4,573
Purchase of investments	(824)	(16,132)
Net (increase) decrease in Card Member loans and receivables, and other loans	(6,280)	34,356
Purchase of premises and equipment, net of sales: 2021, $40; 2020, nil	(609)	(689)
Other investing activities	1	2
Net cash provided by investing activities	2,009	22,146
Cash Flows from Financing Activities
Net (decrease) increase in customer deposits	(1,966)	11,519
Net increase (decrease) in short-term borrowings	17	(4,859)
Proceeds from long-term debt	18	0
Payments of long-term debt	(5,409)	(9,699)
Issuance of American Express common shares	45	33
Repurchase of American Express common shares and other	(1,397)	(1,025)
Dividends paid	(724)	(749)
Net cash used in financing activities	(9,416)	(4,780)
Effect of foreign currency exchange rates on cash and cash equivalents	(227)	380
Net (decrease) increase in cash and cash equivalents	(2,169)	17,657
Cash and cash equivalents at beginning of period	32,965	24,446
Cash and cash equivalents at end of period	$ 30,796	$ 42,103