Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Derivative Financial Instruments - Additional Information (Detail) - USD ($)				3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 08, 2016	Aug. 05, 2016	Mar. 28, 2012	Oct. 07, 2017	Oct. 08, 2016	Oct. 07, 2017	Oct. 08, 2016	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Cash settlement on hedge	$ 1,000,000	$ 1,000,000	$ 3,100,000
Hedge ineffectiveness				$ 0	$ 0	$ 0	$ 0
Derivative instrument, asset				15,700,000		15,700,000		$ 3,000,000
Derivative instrument, liability				$ 0		$ 0		0
Selling, Distribution, and Administrative Expense
Derivative Instruments, Gain (Loss) [Line Items]
Hedge ineffectiveness								$ 100,000