Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for sales returns and price protection	$ 66	$ 66
Inventory reserve	9	11
Accrued expenses	26	40
Deferred revenue	238	288
Tax credit carryforwards	71	58
Net operating loss carryforwards	10	10
Share-based compensation	63	54
Acquired intangibles	115	0
Other	29	28
Deferred tax assets	627	555
Valuation allowance	0	0
Deferred tax assets, net of valuation allowance	627	555
Deferred tax liabilities:
Acquired intangibles	(226)	(166)
Prepaid royalties	(62)	(30)
Capitalized software development expenses	(94)	(81)
State taxes	(1)	(7)
Other	(5)	(6)
Deferred tax liabilities	(388)	(290)
Net deferred tax assets	$ 239	$ 265