Condensed Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net revenues	$ 4,366	$ 3,877	$ 8,628	$ 7,625
Cost of net revenues	1,392	1,211	2,743	2,363
Gross profit	2,974	2,666	5,885	5,262
Operating expenses:
Sales and marketing	914	771	1,719	1,468
Product development	500	451	980	885
General and administrative	461	419	926	827
Provision for transaction and loan losses	232	193	436	368
Amortization of acquired intangible assets	73	82	152	164
Total operating expenses	2,180	1,916	4,213	3,712
Income from operations	794	750	1,672	1,550
Interest and other, net	9	6	4	15
Income before income taxes	803	756	1,676	1,565
Provision for income taxes	(127)	(116)	(3,326)	(248)
Net income (loss)	$ 676	$ 640	$ (1,650)	$ 1,317
Net income (loss) per share:
Basic	$ 0.54	$ 0.49	$ (1.30)	$ 1.02
Diluted	$ 0.53	$ 0.49	$ (1.30)	$ 1.00
Weighted average shares:
Basic	1,258	1,297	1,267	1,296
Diluted	1,267	1,313	1,267	1,316