v2.4.0.8
Condensed Consolidating Statements of Comprehensive Income (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]    
Net income $ 104,653 $ 84,592
Other comprehensive income, net of tax:    
Foreign currency translation (563) (18,980)
Net change in unrecognized gains/losses on derivative instruments, net of tax 793 732
Change in unrealized gain on pension plan, net of tax (37) 0
Total other comprehensive income (loss) 193 (18,248)
Total comprehensive income 104,846 66,344
Parent Company
    
Condensed Financial Statements, Captions [Line Items]    
Net income 104,653 84,592
Other comprehensive income, net of tax:    
Foreign currency translation (563) (18,980)
Net change in unrecognized gains/losses on derivative instruments, net of tax 793 732
Change in unrealized gain on pension plan, net of tax (37)  
Total other comprehensive income (loss) 193 (18,248)
Total comprehensive income 104,846 66,344
Guarantor Subsidiaries
    
Condensed Financial Statements, Captions [Line Items]    
Net income 91,551 75,275
Other comprehensive income, net of tax:    
Foreign currency translation (78) (7,698)
Net change in unrecognized gains/losses on derivative instruments, net of tax 0 0
Change in unrealized gain on pension plan, net of tax 0  
Total other comprehensive income (loss) (78) (7,698)
Total comprehensive income 91,473 67,577
Non-Guarantor Subsidiaries
    
Condensed Financial Statements, Captions [Line Items]    
Net income 27,857 15,697
Other comprehensive income, net of tax:    
Foreign currency translation 421 (18,463)
Net change in unrecognized gains/losses on derivative instruments, net of tax (115) (167)
Change in unrealized gain on pension plan, net of tax (37)  
Total other comprehensive income (loss) 269 (18,630)
Total comprehensive income 28,126 (2,933)
Consolidation, Eliminations
    
Condensed Financial Statements, Captions [Line Items]    
Net income (119,408) (90,972)
Other comprehensive income, net of tax:    
Foreign currency translation (343) 26,161
Net change in unrecognized gains/losses on derivative instruments, net of tax 115 167
Change in unrealized gain on pension plan, net of tax 37  
Total other comprehensive income (loss) (191) 26,328
Total comprehensive income $ (119,599) $ (64,644)