Long-Term Debt - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended					3 Months Ended										9 Months Ended	2 Months Ended	3 Months Ended		9 Months Ended							3 Months Ended	9 Months Ended					3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Jun. 27, 2011 Incremental Credit Facility	Jun. 27, 2011 Term Loan A	Sep. 30, 2012 Term Loan A Principal Repayment Percentage in Each of First Two Years from Issuance [Member]	Sep. 30, 2012 Term Loan A Principal Repayment Percentage in Third Year from Issuance [Member]	Sep. 30, 2012 Term Loan A Principal Repayment Percentage in Fourth Year from Issuance [Member]	Sep. 30, 2012 Term Loan A Principal Repayment Percentage in Fifth Year from Issuance [Member]	Sep. 30, 2012 Term Loan A Principal repayable at maturity	Sep. 30, 2012 Senior Secured Revolving Credit Facility	Jun. 27, 2011 Senior Secured Revolving Credit Facility	Jun. 27, 2011 Senior Secured Revolving Credit Facility Foreign Denominated	Jun. 27, 2011 Senior Secured Revolving Credit Facility Letter of Credit	Jun. 27, 2011 Senior Secured Revolving Credit Facility Revolving Line of Credit	Sep. 30, 2011 Senior Notes due 2015 [Member]	Jun. 30, 2004 Prior Senior Secured Credit Facility	Sep. 30, 2011 Prior Senior Secured Credit Facility	Sep. 30, 2012 Senior Secured Credit Facility	Sep. 30, 2012 Senior Secured Credit Facility	Jun. 27, 2011 Senior Secured Credit Facility	Sep. 30, 2012 Senior Secured Credit Facility Base Rate	Sep. 30, 2012 Senior Secured Credit Facility Euro Dollar Rate	Sep. 30, 2012 Senior Secured Revolving Credit Facility	Dec. 31, 2011 Senior Secured Revolving Credit Facility	Jan. 28, 2011 Senior Secured Revolving Credit Facility	Sep. 30, 2012 Senior Notes due 2021	Sep. 30, 2011 Senior Notes due 2021	Dec. 31, 2011 Senior Notes due 2021	Jan. 28, 2011 Senior Notes due 2021 Senior Notes Redeemable Prior to February 1, 2014 [Member]	Jan. 28, 2011 Senior Notes due 2021 Senior Notes Redeemable Prior To February 1, 2016 Member	Jan. 28, 2011 Senior Notes due 2021 Senior Notes Redeemable Upon Change in Control [Member]	Sep. 30, 2012 Senior Notes due 2033
Debt Outstanding [Line Items]
Principal Redeemable with Equity Offering Proceeds																																35.00%
Debt Instrument, Redemption Price																																	100.00%	101.00%
Cross-Default Accelerated Indebtedness Amount																					$ 50,000,000								$ 50,000,000						$ 25,000,000
Debt Instrument, Interest Rate, Stated Percentage																													6.625%		6.625%
Debt Instrument, Face Amount							300,000,000
Principal repayment, percentage								5.00%	10.00%	15.00%	11.25%	53.75%
Line of credit, aggregate principal amount														100,000,000	15,000,000	50,000,000	20,000,000
Line of credit, outstanding amount													41,600,000	50,000,000
Line of credit, incremental facility						150,000,000
Cash used to repay outstanding debt																			120,000,000
Repayments of long-term debt			11,250,000	709,919,000															462,200,000
Standby letters of credit outstanding	8,400,000		8,400,000
Senior secured debt, applicable margin rate																								0.75%	1.75%
Senior secured debt, maximum applicable margin rate																								1.00%	2.00%
Percentage of capital stock of foreign subsidiaries pledged as a guarantee																							65.00%
Mandatory principal prepayments from aggregate net cash proceeds from certain asset sales, casualty events or condemnation recoveries, percentage																												100.00%
Pre-tax loss on extinguishment of debt	0	0	0	(16,318,000)														13,300,000		3,000,000
Loss on Discontinuation of Hedge Accounting			2,600,000
Long-term Debt	591,311,000		591,311,000		602,560,000																					50,000,000	50,000,000		260,000,000		260,000,000
Capitalized debt issuance costs																						$ 6,200,000								$ 5,100,000