Condensed Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Net revenues	$ 4,262	$ 3,748
Cost of net revenues	1,351	1,152
Gross profit	2,911	2,596
Operating expenses:
Sales and marketing	805	697
Product development	480	434
General and administrative	465	408
Provision for transaction and loan losses	204	175
Amortization of acquired intangible assets	79	82
Total operating expenses	2,033	1,796
Income from operations	878	800
Interest and other, net	(5)	9
Income before income taxes	873	809
Provision for income taxes	(3,199)	(132)
Net income (loss)	$ (2,326)	$ 677
Net income (loss) per share:
Basic	$ (1.82)	$ 0.52
Diluted	$ (1.82)	$ 0.51
Weighted average shares:
Basic	1,276	1,295
Diluted	1,276	1,319