Quarterly report pursuant to Section 13 or 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 ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total principal amount $ 2,978,591 $ 2,337,992
Less unamortized discounts and debt issuance costs (111,778) (38,033)
Total debt, net of unamortized discounts and debt issuance costs 2,866,813 2,299,959
Less: current portion 119,414 347,593
Total long-term debt, net of unamortized discounts and debt issuance costs 2,747,399 1,952,366
Senior Secured Credit Facility Term loan A [Member]    
Debt Instrument [Line Items]    
Total principal amount 171,000 175,750
Senior Secured Credit Facility Term loan B [Member]    
Debt Instrument [Line Items]    
Total principal amount 960,424 962,849
4.875% Senior Notes Due 2024 [Member]    
Debt Instrument [Line Items]    
Total principal amount 575,000 575,000
5.625% Senior Notes Due 2026 [Member]    
Debt Instrument [Line Items]    
Total principal amount 300,000 0
5.375% Senior Notes due 2022 [Member]    
Debt Instrument [Line Items]    
Total principal amount 250,000 250,000
2.5% Convertible Senior Notes Due 2023 [Member]    
Debt Instrument [Line Items]    
Total principal amount 550,000 0
2.5% Convertible Senior Notes Due 2019 [Member]    
Debt Instrument [Line Items]    
Total principal amount 51,684 275,000
Other Long Term Debt [Member]    
Debt Instrument [Line Items]    
Total principal amount $ 120,483 $ 99,393