Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions			2 Months Ended	3 Months Ended		9 Months Ended
	Feb. 04, 2016	Jan. 15, 2016	Jan. 15, 2016	Jan. 01, 2016	Jan. 02, 2015	Jan. 01, 2016	Jan. 02, 2015	Nov. 30, 2015	Oct. 02, 2015
Class of Stock [Line Items]
Cash dividends declared per common share (in usd per share)				$ 0.15	$ 0.15	$ 0.45	$ 0.45
Remaining authorization at end of period				$ 1,790,000,000		$ 1,790,000,000
Upfront payment for shares repurchased						$ 868,000,000	$ 375,000,000
Shares repurchased and retired				5.7		17.0
Average price paid per share (in usd per share)				$ 20.68		$ 21.69
Subsequent Event | Common Stock
Class of Stock [Line Items]
Dividends payable, date declared	Feb. 04, 2016
Cash dividends declared per common share (in usd per share)	$ 0.15
Dividends payable, date to be paid	Mar. 16, 2016
Dividends payable, date of record	Feb. 22, 2016
2016 Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 1,500,000,000.0
November 2015 Accelerated Stock Repurchase Agreement
Class of Stock [Line Items]
Stock repurchase program, authorized amount								$ 500,000,000
Upfront payment for shares repurchased				$ 500,000,000
Shares repurchased and retired				19.9
November 2015 Accelerated Stock Repurchase Agreement | Subsequent Event
Class of Stock [Line Items]
Shares repurchased and retired		5.0	24.9
Average price paid per share (in usd per share)			$ 20.08