Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents
Restricted cash	$ 525	$ 606
Securities purchased under resale agreements	463	92
Premises and equipment, accumulated depreciation	8,602	7,540
Other assets, reserves for credit losses	25	85
Liabilities
Outstanding balance	$ 38,675	$ 42,952
Shareholders’ Equity
Preferred shares, par value (in dollars per share)	$ 1.667	$ 1.667
Preferred shares, authorized (in shares)	20,000,000	20,000,000
Preferred shares, outstanding (in shares)	1,600	1,600
Preferred shares, issued (in shares)	1,600	1,600
Common shares, par value (in dollars per share)	$ 0.20	$ 0.20
Common shares, authorized (in shares)	3,600,000,000	3,600,000,000
Common shares, issued (in shares)	761,000,000	805,000,000
Common shares, outstanding (in shares)	761,000,000	805,000,000
Accumulated other comprehensive income (loss)
Net unrealized debt securities gains (losses), tax	$ 7	$ 20
Foreign currency translation adjustments, tax	(330)	(381)
Net unrealized pension and other postretirement benefits, tax	(184)	(236)
Card Member receivables
Cash and cash equivalents
Financing receivables, gross	53,645	43,701
Financing receivables, reserves for credit losses	64	267
Card Member loans
Cash and cash equivalents
Financing receivables, gross	88,562	73,373
Financing receivables, reserves for credit losses	3,305	5,344
Other
Cash and cash equivalents
Financing receivables, reserves for credit losses	52	238
Variable Interest Entity, Primary Beneficiary
Cash and cash equivalents
Restricted cash	11	0
Restricted investments	32	47
Liabilities
Outstanding balance	13,803	12,760
Variable Interest Entity, Primary Beneficiary | Card Member receivables
Cash and cash equivalents
Financing receivables, gross	5,175	4,296
Variable Interest Entity, Primary Beneficiary | Card Member loans
Cash and cash equivalents
Financing receivables, gross	$ 26,587	$ 25,908