Debt and Credit Facilities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended			9 Months Ended		9 Months Ended		1 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 5.625 % Senior Notes due July 2013 [Member]	Dec. 31, 2011 5.625 % Senior Notes due July 2013 [Member]	Sep. 30, 2012 Term Loan A Facility [Member]	Sep. 30, 2012 Term Loan B Facility [Member]	Oct. 03, 2011 Term Loan B Facility [Member] Dollar component [Member]	Oct. 03, 2011 Term Loan B Facility [Member] Euro component [Member]	Oct. 03, 2011 Term Loans A and B [Member]	Sep. 30, 2012 Term Loans A and B [Member]	Sep. 30, 2012 Term Loans A and B [Member]	Sep. 30, 2012 Revolving credit facility [Member]
Debt Instrument [Line Items]
Senior notes maturity date				Jul. 15, 2013
Payments of long-term debt	$ 88.6	$ 6.2				$ 78.0	$ 8.0
Weighted average interest rate	6.40%		2.60%
Line of Credit Facility													700
Percentage of Principal Amount of Notes Sold to Investor								98.00%	97.00%
Unamortized discount					0.3					28.0
Lender fees										48
Non-lender fees										51
Amortization expenses related to the debt instruments											6	17
Credit facility amount outstanding	$ 49.0		$ 34.5