Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Cash and cash equivalents
Cash and cash due from banks	$ 3,873	$ 2,020
Interest-bearing deposits in other banks (including securities purchased under resale agreements)	19,029	19,892
Short-term investment securities	227	338
Total cash and cash equivalents	23,129	22,250
Accounts receivable
Cardmember receivables (includes gross receivables available to settle obligations of a consolidated variable interest entity), less reserves	43,711	42,338
Other receivables, less reserves	3,204	3,576
Loans
Cardmember loans, (includes gross loans available to settle obligations of a consolidated variable interest entity), less reserves	61,732	63,758
Other loans, less reserves	532	551
Investment securities	5,262	5,614
Premises and equipment, less accumulated depreciation and amortization	3,716	3,635
Other assets (includes restricted cash of consolidated variable interest entities)	10,647	11,418
Total assets	151,933	153,140
Liabilities
Customer deposits	40,515	39,803
Travelers Cheques and other prepaid products	4,125	4,601
Accounts payable	14,313	10,006
Short-term borrowings	2,961	3,314
Long-term debt (includes debt issued by consolidated variable interest entities)	52,675	58,973
Other liabilities	18,310	17,557
Total liabilities	132,899	134,254
Shareholders' Equity
Common shares	217	221
Additional paid-in capital	12,242	12,067
Retained earnings	7,883	7,525
Accumulated other comprehensive (loss) income
Net unrealized securities gains, net of tax	153	315
Foreign currency translation adjustments, net of tax	(1,027)	(754)
Net unrealized pension and other postretirement benefit losses, net of tax	(434)	(488)
Total accumulated other comprehensive loss	(1,308)	(927)
Total shareholders' equity	19,034	18,886
Total liabilities and shareholders' equity	$ 151,933	$ 153,140