Significant Accounting Policies and Recent Accounting Standards - Adoption of New Accounting Standards (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Dec. 30, 2016	Jan. 01, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax benefits	$ (76)	$ (85)	$ (139)	$ (152)
Earnings per diluted share (in usd per share)	$ 1.40	$ (1.22)	$ 2.68	$ (0.03)
New Accounting Pronouncement, Early Adoption, Effect | Adjustments for New Accounting Pronouncements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Income tax benefits	$ 3		$ 13
Earnings per diluted share (in usd per share)	$ 0.02		$ 0.10
Net cash provided by operating activities			$ 13