Discontinued Operations Discontinued Operations - Effect on Statements of Operations of Discontinued Operations (Details) $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allocated Share-based Compensation Expense	$ 13
Social and Mobile Games [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allocated Share-based Compensation Expense	15
Social and mobile games	218
Platform fees	64
Property, general, administrative, and other (1)	88	[1]
Total operating expenses	152
Pre-tax income from discontinued operations	66
Income tax provision	(33)
Total income from discontinued operations, net of income taxes	$ 33

[1] Property, general, administrative, and other includes stock-based compensation expense directly identifiable with employees of the SMG Business of $15 million for the three months ended March 31, 2016