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Long-Term Debt and Short-Term Borrowings - Schedule of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Total long-term debt $ 1,774,047 $ 1,773,396
Less: current maturities of long-term debt (1,540) (1,814)
Less: unamortized debt issuance costs (9,394) (10,337)
Total long-term debt, net of current maturities 1,763,113 1,761,245
Senior secured term loans [Member]    
Debt Instrument [Line Items]    
Total long-term debt 749,388 748,531
Other Long Term Debt [Member]    
Debt Instrument [Line Items]    
Total long-term debt 1,540 1,861
4.875% Senior Notes [Member] | Senior Notes [Member]    
Debt Instrument [Line Items]    
Total long-term debt 597,259 597,052
5.25% Senior Notes [Member] | Senior Notes [Member]    
Debt Instrument [Line Items]    
Total long-term debt $ 425,860 $ 425,952