Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate	28.20%	31.60%
Benefit related to return to provision changes in estimate and state tax credits	$ 13,200,000
Non-current deferred tax assets included in other assets	600,000		$ 0
Non-current deferred tax liabilities included in deferred credits and other liabilities	$ 516,000,000		$ 558,600,000