Segment Information (Reconciliation of Consolidated Operating Income to Income Before Taxes) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Oct. 02, 2015	Oct. 03, 2014	Oct. 02, 2015	Oct. 03, 2014
Reconciliation of consolidated operating income to income before taxes [Abstract]
Operating income	$ 308	$ 349	$ 606	$ 653
Corporate G&A	(61)	(67)	(115)	(123)
Pension & OPEB actuarial & settlement losses	0	0	0	(1)
Separation and merger costs	(46)	0	(64)	0
Interest expense	(35)	(36)	(70)	(75)
Interest income	7	5	18	10
Other income (expense), net	3	(6)	29	(5)
Income from continuing operations, before taxes	$ 176	$ 245	$ 404	$ 459