Stockholders' Equity Stockholders' Equity (Reclassifications out of AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 29, 2017	Dec. 30, 2016	Dec. 29, 2017	Dec. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	$ 4	$ 5	$ (16)	$ 28
Gain on divestiture			658	0
Income tax expense (benefit)	(606)	(5)	(683)	45
Income (loss) from continuing operations	705	(61)	502	(14)
Foreign Currency Translation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total			5
Unrealized Gain (Loss) on Available-For-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total			(4)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	(4)	0	(1)	0
Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Translation Adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense), net	0	0	3	0
Gain on divestiture	(8)	0	(8)	0
Income (loss) from continuing operations	(8)	0	(5)	0
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Available-For-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Gain on divestiture	7	0	7	0
Income tax expense (benefit)	3	0	3	0
Income (loss) from continuing operations	$ 4	$ 0	$ 4	$ 0