Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT (Schedule of Long-Term Debt) (Details)

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LONG-TERM DEBT (Schedule of Long-Term Debt) (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total principal amount $ 2,909,879,000 $ 2,337,992,000
Less unamortized discounts and debt issuance costs (94,859,000) (38,033,000)
Total long-term debt, net of unamortized discounts and debt issuance costs 2,815,020,000 2,299,959,000
Less: current portion 82,142,000 347,593,000
Total long-term debt, net 2,732,878,000 1,952,366,000
Senior Secured Credit Facility Term loan A [Member]    
Debt Instrument [Line Items]    
Total principal amount 156,750,000 175,750,000
Senior Secured Credit Facility Term loan B [Member]    
Debt Instrument [Line Items]    
Total principal amount 953,148,000 962,849,000
4.875% Senior Notes Due 2024 [Member]    
Debt Instrument [Line Items]    
Total principal amount 575,000,000 575,000,000
5.625% Senior Notes due 2026    
Debt Instrument [Line Items]    
Total principal amount 300,000,000 0
5.375% Senior Notes due 2022 [Member]    
Debt Instrument [Line Items]    
Total principal amount 250,000,000 250,000,000
2.5% Convertible Senior Notes Due 2023 [Member]    
Debt Instrument [Line Items]    
Total principal amount 550,000,000 0
2.5% Convertible Senior Notes due 2019    
Debt Instrument [Line Items]    
Total principal amount 28,673,000 275,000,000
Other Long Term Debt [Member]    
Debt Instrument [Line Items]    
Total principal amount $ 96,308,000 $ 99,393,000