Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jul. 01, 2017	Sep. 24, 2016	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016	Dec. 31, 2016
Income Taxes [Line Items]
Effective tax rate	40.00%		9.00%	39.00%	9.00%
Non-cash income tax benefit				$ 42	$ 2
Valuation Allowance of Deferred Tax Assets
Income Taxes [Line Items]
Decrease in valuation allowance				25
U.S. Federal and State
Income Taxes [Line Items]
Decrease in valuation allowance						$ (400)
Non-cash income tax benefit		$ 240
U.S. Federal and State | Valuation Allowance of Deferred Tax Assets
Income Taxes [Line Items]
Valuation allowance	$ 140			$ 140