Recent Accounting Standards (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 29, 2018	Jun. 30, 2017	Mar. 31, 2018	Mar. 30, 2018	[1]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net revenues	$ 1,156	$ 1,175
Operating Expenses	905	$ 962
Retained earnings	1,158		$ 1,267	$ 328
Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings			197
Accounting Standards Update 2016-16
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained earnings			$ 742
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Net revenues	5
Operating Expenses	(9)
Retained earnings	$ 216

[1] Derived from audited financial statements.