Gross amounts of Fair Value of All Derivative Financial Instruments with Counterparties for Which Master Netting Arrangement Utilized (Detail) (USD $) In Millions, unless otherwise specified	Mar. 29, 2015	Dec. 28, 2014
Derivative [Line Items]
Gross Assets	$ 3.8	$ 2.8
Gross Liabilities	(0.1)
Current Assets	3.7	2.8
Gross Assets		0.1
Gross Liabilities	(4.1)	(5.6)
Current Liabilities	$ (4.1)	$ (5.5)

Fair value, after offset of derivative liability, of 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, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, after offset of derivative asset, of financial liability or 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, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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