Derivatives Offsetting Assets and Liabilities (Details) - USD ($)	Dec. 30, 2016	Jul. 01, 2016
Derivative Asset [Abstract]
Derivative Asset, Fair Value, Gross Asset	$ 2,000,000	$ 118,000,000
Derivative Asset, Fair Value, Amount Offset	0
Derivative Asset	2,000,000	114,000,000
Derivative Asset, Financial Instruments Subject To Master Netting Arrangement, Elected Not To Be Offset	0
Derivative, Collateral, Obligation to Return Cash	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	2,000,000
Derivative Liability [Abstract]
Derivative Liability, Fair Value, Gross Liability	(167,000,000)	(27,000,000)
Derivative Liability, Fair Value, Amount Offset	0
Derivative Liability	(167,000,000)	$ (23,000,000)
Derivative Liability, Financial Instruments Subject to Master Netting Arrangement, Elected Not to Be Offset	0
Derivative, Collateral, Right to Reclaim Cash	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(167,000,000)
Derivative, Fair Value, Net [Abstract]
Derivative, Fair Value, Gross	(165,000,000)
Derivative, Fair Value, Amount Offset	0
Derivative Assets (Liabilities), at Fair Value, Net	(165,000,000)
Derivative Financial Instruments Subject To Master Netting Arrangement, Elected Not To Be Offset	0
Derivative Collateral Obligation To Return Cash or Right To Reclaim Cash	0
Derivative, Fair Value, Amount Offset Against Collateral, Net	$ (165,000,000)