Income Taxes (Principal Components Of Deferred Tax Assets) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Apr. 01, 2016
Deferred tax assets:
Tax credit carryforwards	$ 42	$ 53
Net operating loss carryforwards of acquired companies	82	34
Other accruals and reserves not currently tax deductible	127	112
Deferred revenue	137	89
Loss on investments not currently tax deductible	9	14
State income taxes	2	8
Stock-based compensation	122	39
Other	14	9
Gross deferred tax assets	535	358
Valuation allowance	(38)	(50)
Deferred tax assets, net of valuation allowance	497	308
Deferred tax liabilities:
Property and equipment	(34)	(106)
Goodwill	(54)	(50)
Intangible assets	(783)	(11)
Unremitted earnings of foreign subsidiaries	(1,939)	(1,327)
Prepaids and deferred expenses	(24)	(17)
Deferred Tax Liabilities, Convertible Debt	(21)	0
Deferred tax liabilities	(2,855)	(1,511)
Net deferred tax liabilities	$ (2,358)	$ (1,203)