Hedging Transactions and Derivative Financial Instruments - Summary of Fair Value of the Aluminum Swap Assets and Liabilities (Detail) - USD ($) $ in Millions	Jan. 02, 2016	Jan. 03, 2015
Derivative [Line Items]
Aluminum swap assets	$ 0.6	$ 1.2
Net asset (liability)	0.6
Aluminum Swaps [Member]
Derivative [Line Items]
Aluminum swap assets	0.0
Aluminum swap liabilities	0.0
Net asset (liability)	0.0
Aluminum swap assets	0.0
Aluminum swap liabilities	8.0
Net asset (liability)	$ 8.0

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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