Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Income Taxes [Line Items]
Decrease to deferred tax liabilities					$ (173)
Adjustment to deferred income tax benefit					173
Increase to deferred tax liabilities					4
Adjustment to other long-term liabilities					4
Incremental to planned contributions			$ 35
Provisional decrease to deferred tax liabilities			3
Decrease to current taxes payable			1
Tax benefit			$ 4		$ 4
Effective tax rate	22.00%	23.00%	14.00%	23.00%
Income tax benefit related to excess tax benefits	$ 3	$ 14	$ 5	$ 20
Accounting Standards Update 2015-17 | Internal Revenue Service (IRS)
Income Taxes [Line Items]
Income tax benefit related to reduction of unrecognized tax benefit			$ 17