Condensed Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Net revenues	$ 3,404	[1]	$ 2,966	[1]	$ 10,079	[1]	$ 8,272	[1]
Cost of net revenues	1,022		920		2,992		2,426
Gross profit	2,382		2,046		7,087		5,846
Operating expenses:
Sales and marketing	726		623		2,120		1,763
Product development	389		319		1,157		891
General and administrative	369		336		1,131		1,018
Provision for transaction and loan losses	148		146		413		372
Amortization of acquired intangible assets	83		85		251		182
Total operating expenses	1,715		1,509		5,072		4,226
Income from operations	667	[1]	537	[1]	2,015	[1]	1,620	[1]
Interest and other, net	5		79		74		111
Gain (loss) on divested businesses	0		0		118		(256)
Income before income taxes	672		616		2,207		1,475
Provision for income taxes	(75)		(125)		(348)		(225)
Net income	$ 597		$ 491		$ 1,859		$ 1,250
Net income per share:
Basic	$ 0.46		$ 0.38		$ 1.44		$ 0.97
Diluted	$ 0.45		$ 0.37		$ 1.42		$ 0.95
Weighted average shares:
Basic	1,292		1,290		1,291		1,291
Diluted	1,314		1,309		1,311		1,311

[1] Certain amounts may not sum due to rounding.