Income Taxes Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 30, 2016	Jan. 01, 2016	Dec. 30, 2016	Jan. 01, 2016
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 86	$ (7)	$ 181	$ 24
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			90
Valuation Allowance, Deferred Tax Asset, Increase (Decrease) as a result of acquisition			109
Other Tax Expense (Benefit)			(96)
Decrease in Unrecognized Tax Benefits is Reasonably Possible	14		14
Unrecognized Tax Benefits	477		477
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 84		84
Estimated additional federal tax expense as a result of examination			$ 795