Segment Information (Reconciliation of Total Segment Operating Income to Total Consolidated Operating Income) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	$ (12,000,000)	$ 100,000,000	$ 94,000,000	$ 183,000,000
Stock-based compensation	85,000,000	45,000,000	134,000,000	80,000,000
Restructuring, separation, transition, and other	65,000,000		144,000,000
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	249,000,000	283,000,000	502,000,000	558,000,000
Unallocated Corporate Charges
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	0	87,000,000	0	186,000,000
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation	85,000,000	45,000,000	134,000,000	80,000,000
Amortization of intangible assets	69,000,000	20,000,000	89,000,000	43,000,000
Restructuring, separation, transition, and other	64,000,000	31,000,000	134,000,000	66,000,000
Acquisition and integration costs	$ 43,000,000	$ 0	$ 51,000,000	$ 0