Fair Value Measurements - Schedule of Fair Values of Financial Assets and Liabilities (Detail) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FX Contracts, assets, derivatives		$ 0.2
Total assets at fair value		0.2
FX Contracts, liabilities, derivatives	0.9	0.8
Total liabilities at fair value	0.9	1.0
Change of Control Amount (Preferred Stock)		0.2
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
FX Contracts, assets, derivatives		0.2
Total assets at fair value		0.2
FX Contracts, liabilities, derivatives	0.9	0.8
Total liabilities at fair value	0.9	0.8
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value		0.2
Change of Control Amount (Preferred Stock)		$ 0.2