Net Income (Loss) From Continuing Operations Per Common Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 01, 2016	Jan. 02, 2015
Net Income (Loss) From Continuing Operations Per Common Share [Abstract]
Income (loss) from continuing operations	$ (135)	$ 139	$ 13	$ 264
Adjustments for participating securities outstanding	0	0	0	(1)
Income (loss) from continuing operations used in per basic and diluted common share calculations (A)	$ (135)	$ 139	$ 13	$ 263
Basic weighted average common shares outstanding (B)	123,800,000	103,900,000	123,600,000	104,300,000
Impact of dilutive share-based awards	0	1,000,000	1,100,000	1,000,000
Diluted weighted average common shares outstanding (C)	123,800,000	104,900,000	124,700,000	105,300,000
Income (loss) from continuing operations per basic common share (A)/(B)	$ (1.09)	$ 1.34	$ 0.10	$ 2.52
Income (loss) from continuing operations per diluted common share (A)/(C)	$ (1.09)	$ 1.32	$ 0.10	$ 2.50
Net Income Per Common Share (Textuals) [Abstract]
Outstanding antidilutive employee stock options			1,482,261	678,650