Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Cash and cash equivalents
Securities purchased under resale agreements	$ 46	$ 92
Restricted cash and cash equivalents	1,841	606
Accumulated depreciation and amortization	8,084	7,540
Other assets, reserves for credit losses	39	85
Liabilities
Long-term debt	$ 37,363	$ 42,952
Shareholders’ Equity
Preferred shares, par value (in dollars per share)	$ 1.667	$ 1.667
Preferred shares, authorized	20,000,000	20,000,000
Preferred shares, issued	1,600	1,600
Preferred shares, outstanding	1,600	1,600
Common shares, par value (in dollars per share)	$ 0.20	$ 0.20
Common shares, authorized	3,600,000,000	3,600,000,000
Common shares, issued	798,000,000	805,000,000
Common shares, outstanding	798,000,000	805,000,000
Accumulated other comprehensive income (loss)
Net unrealized debt securities, tax	$ 14	$ 20
Foreign currency translation adjustments, tax	(411)	(381)
Net unrealized pension and other postretirement benefits, tax	(223)	(236)
Card Member Receivables
Cash and cash equivalents
Financing receivables, gross	47,585	43,701
Allowance for credit losses	73	267
Card Member Loans
Cash and cash equivalents
Financing receivables, gross	75,610	73,373
Allowance for credit losses	3,835	5,344
Other Loans
Cash and cash equivalents
Allowance for credit losses	72	238
Variable Interest Entity, Primary Beneficiary
Cash and cash equivalents
Restricted cash	14	0
Restricted cash and cash equivalents	1,379	47
Liabilities
Long-term debt	11,866	12,760
Variable Interest Entity, Primary Beneficiary | Card Member Receivables
Cash and cash equivalents
Financing receivables, gross	4,787	4,296
Variable Interest Entity, Primary Beneficiary | Card Member Loans
Cash and cash equivalents
Financing receivables, gross	$ 25,149	$ 25,908