Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended			0 Months Ended			0 Months Ended		0 Months Ended
	Mar. 31, 2014	Mar. 31, 2014 Minimum	Mar. 31, 2014 Maximum	Aug. 20, 2013 Fourth Amendment	Aug. 20, 2013 Senior Notes	Mar. 31, 2014 Senior Notes	Nov. 10, 2011 Revolving Credit Facility	Mar. 31, 2014 Revolving Credit Facility	Nov. 10, 2011 Term Credit Facility	Mar. 31, 2014 Term Credit Facility	Mar. 31, 2014 Parent Company and Domestic Subsidiaries	Mar. 31, 2014 Foreign Subsidiaries
Debt Instrument [Line Items]
Line of credit facility amount outstanding								$ 32.0		$ 446.5
Senior notes amount outstanding					300.0	300.0
Unused borrowings								218
Credit facilities, maximum borrowing capacity							250		500
Credit facilities, maturity							5 years		5 years
Borrowing under credit facility after amendment				$ 300
Credit Facility maturity date	Aug. 20, 2018			Aug. 20, 2018
Percentage of interest rate on notes				6.375%	6.375%
Credit facility, interest rate description	The applicable margin for borrowings under the Revolving Credit Facility is, based on the calculation of the applicable consolidated total leverage ratio, between 0.50% to 1.50% with respect to base rate borrowings and between 1.50% and 2.50% with respect to LIBOR based borrowings. Interest is due and payable monthly. The interest rate in effect at March 31, 2014 for the Credit Facility was 2.41%.
Credit facility, interest rate margin above federal fund rate	0.50%
Credit facility, interest rate margin above one-month LIBOR rate	1.00%
Credit facility, interest rate margin above base rate		0.50%	1.50%
Credit facility, interest rate margin above LIBOR rate		1.50%	2.50%
Credit facility, borrowing rate	2.41%
Issue price percentage of senior notes of the principal amount					100.00%
Maturity date of senior notes	Aug. 15, 2020				Aug. 15, 2020
Percentage of capital stock pledged as collateral											100.00%	65.00%