Stockholders' Equity (Summary of Dividends Declared and Paid) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Equity [Abstract]
Dividends declared and paid	$ 47	$ 102	$ 93	$ 205
Dividend equivalents paid	5	1	27	5
Total dividends and dividend equivalents paid	$ 52	$ 103	$ 120	$ 210
Cash dividends declared per common share (in usd per share)	$ 0.075	$ 0.15	$ 0.15	$ 0.3