The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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- Definition

Amount of consideration other than cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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Restructuring and Asset Impairments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Restructuring Cost and Reserve [Line Items]
Lease termination benefits				$ (3.6)
Amount owed under restructuring plan	0	0	0
Intangible asset impairments	1.4		1.4
Asset impairments	0.6		0.6
North American Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments made during the year				5.4
Settlement of lease obligations				3.0
Lease termination benefits				0.4
Gain on other non cash charges				0.1
Intangible asset impairments			$ 1.4