Condensed Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ (2,326)	$ 677
Adjustments:
Provision for transaction and loan losses	204	175
Depreciation and amortization	382	329
Stock-based compensation	149	111
Deferred income taxes	3,108	450
Changes in assets and liabilities, net of acquisition effects	(343)	(805)
Net cash provided by operating activities	1,174	937
Cash flows from investing activities:
Purchases of property and equipment	(206)	(299)
Changes in principal loans receivable, net	(2)	(29)
Purchases of investments	(1,261)	(1,426)
Maturities and sales of investments	2,006	1,048
Acquisitions, net of cash acquired	(4)	(8)
Other	(1)	(5)
Net cash provided by (used in) investing activities	532	(719)
Cash flows from financing activities:
Proceeds from issuance of common stock	55	102
Repurchases of common stock	(1,811)	(476)
Excess tax benefits from stock-based compensation	60	116
Tax witholdings related to net share settlements of restricted stock awards and units	(104)	(153)
Funds receivable and customer accounts	(388)	(803)
Funds payable and amounts due to customers	388	803
Other	7	0
Net cash used in financing activities	(1,793)	(411)
Effect of exchange rate changes on cash and cash equivalents	8	(94)
Net increase (decrease) in cash and cash equivalents	(79)	(287)
Cash and cash equivalents at beginning of period	4,494	6,817
Cash and cash equivalents at end of period	4,415	6,530
Supplemental cash flow disclosures:
Cash paid for interest	36	34
Cash paid for income taxes	$ 35	$ 40