Fair Value of Derivative Instruments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 01, 2011	Jun. 30, 2012	Jul. 01, 2011	Dec. 31, 2011
Derivative [Line Items]
Liability Derivatives, Fair Value	$ 0.9		$ 0.9		$ 0
Designated as Hedging Instrument
Derivative [Line Items]
Asset Derivatives, Fair Value	0.8		0.8		1.2
Amount of Gains (Loss) Recognized in OCI from Derivatives	(0.8)	(0.4)	(0.9)	(0.6)
Designated as Hedging Instrument | Accounts Payable and Accrued Liabilities | Diesel Fuel Contracts
Derivative [Line Items]
Liability Derivatives, Notional Amount	10.0		10.0
Liability Derivatives, Fair Value	0.9		0.9		0
Designated as Hedging Instrument | Other Current Assets | Foreign Exchange Contract
Derivative [Line Items]
Asset Derivatives, Notional Amount	23.6		23.6
Asset Derivatives, Fair Value	0.8		0.8		1.1
Designated as Hedging Instrument | Other Current Assets | Diesel Fuel Contracts
Derivative [Line Items]
Asset Derivatives, Notional Amount	0		0
Asset Derivatives, Fair Value	0		0		0.1
Not Designated as Hedging Instrument
Derivative [Line Items]
Asset Derivatives, Fair Value	3.5		3.5		2.0
Amount of Gain (Loss) Recognized in Income	3.3	0.1	4.7	3.2
Not Designated as Hedging Instrument | Other Current Assets | Foreign Exchange Contract
Derivative [Line Items]
Asset Derivatives, Notional Amount	39.6		39.6
Asset Derivatives, Fair Value	0.4		0.4		0
Not Designated as Hedging Instrument | Other Current Assets | Equity Derivatives
Derivative [Line Items]
Asset Derivatives, Notional Amount	20.2		20.2
Asset Derivatives, Fair Value	3.1		3.1		2.0
Other Comprehensive Income (Loss) | Designated as Hedging Instrument | Foreign Exchange Contract
Derivative [Line Items]
Amount of Gains (Loss) Recognized in OCI from Derivatives	0.2	0.2	(0.3)	(0.4)
Other Comprehensive Income (Loss) | Designated as Hedging Instrument | Diesel Fuel Contracts
Derivative [Line Items]
Amount of Gains (Loss) Recognized in OCI from Derivatives	(1.0)	(0.6)	(0.6)	(0.2)
Selling, General And Administrative Expenses | Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	0.7	(0.2)	0.7	0.9
Selling, General And Administrative Expenses | Not Designated as Hedging Instrument | Equity Derivatives
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 2.6	$ 0.3	$ 4.0	$ 2.3