Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jul. 16, 2015	Dec. 31, 2014
Operating expenses:
Loss from discontinued operations, net of income taxes	$ (599)	$ (44)	$ (644)	$ (75)
Carrying amounts of assets included as part of discontinued operations:
Cash and cash equivalents	16	37	16	37
Cash Flow
Net cash provided by (used in) discontinued operating activities			5	(59)
Net cash used in discontinued investing activities			(70)	(58)
Net cash used in discontinued financing activities			0	(3)
Discontinued Operations, Held-for-sale | Enterprise
Financial Results
Net revenues	266	263	544	528
Cost of net revenues	209	211	422	413
Gross profit	57	52	122	115
Operating expenses:
Sales and marketing	34	29	64	58
Product development	31	32	66	65
General and administrative	64	13	90	26
Provision for transaction and loan losses	1	3	8	4
Amortization of acquired intangible assets	35	35	70	70
Goodwill impairment	786	0	786	0
Total operating expenses	951	112	1,084	223
Loss from operations of discontinued operations	(894)	(60)	(962)	(108)
Interest and other, net	4	(1)	3	(1)
Loss from discontinued operations before income taxes	(890)	(61)	(959)	(109)
Income tax benefit	291	17	315	34
Loss from discontinued operations, net of income taxes	(599)	(44)	(644)	(75)
Carrying amounts of assets included as part of discontinued operations:
Cash and cash equivalents	16		16			$ 29
Short-term investments	1		1			1
Accounts receivable, net	114		114			146
Other current assets	53		53			77
Long-term investments	11		11			10
Property and equipment, net	315		315			303
Goodwill	500		500			1,287
Intangible assets, net	174		174			259
Other assets	2		2			3
Total assets classified as held for sale in the condensed consolidated balance sheet	1,186		1,186			2,115
Carrying amounts of liabilities included as part of discontinued operations:
Accounts payable	110		110			179
Accrued expenses and other current liabilities	107		107			115
Deferred revenue	81		81			80
Deferred and other tax liabilities, net	82		82			73
Other liabilities	1		1			1
Total liabilities classified as held for sale in the condensed consolidated balance sheet	381		381			$ 448
Cash Flow
Net cash provided by (used in) discontinued operating activities	47	20	5	(59)
Net cash used in discontinued investing activities	(47)	(33)	(70)	(58)
Net cash used in discontinued financing activities	$ 0	$ (1)	$ 0	$ (3)
Forecast | Discontinued Operations, Held-for-sale | Enterprise
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal consideration					$ 925