Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (12)	$ (144)	$ (145)	$ (9)
Foreign currency translation adjustments:
Translation adjustments	0	2	(2)	(22)
Reclassification adjustments for gain included in net loss	(3)	0	(3)	0
Net foreign currency translation adjustments	(3)	2	(5)	(22)
Unrealized loss on available-for-sale securities	0	0	0	(1)
Other comprehensive income (loss), net of taxes	(3)	2	(5)	(23)
Comprehensive loss	$ (15)	$ (142)	$ (150)	$ (32)