Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT (Debt Extinguishment) (Details)

v3.19.3.a.u2
LONG-TERM DEBT (Debt Extinguishment) (Details) - USD ($)
 1 Months Ended
Oct. 31, 2019
Mar. 31, 2018
Dec. 31, 2019
Debt Instrument [Line Items]      
Cash available for general corporate purposes $ 527,500,000 $ 492,500,000  
Loss on extinguishment of debt (4,500,000) 2,500,000  
4.75% Senior Notes Due 2027 [Member]      
Debt Instrument [Line Items]      
Face amount $ 950,000,000    
Interest rate, stated percentage 4.75%   4.75%
Proceeds from Issuance of Debt $ 1,100,000,000    
Senior Secured Credit Facility Term loan B [Member]      
Debt Instrument [Line Items]      
Face amount $ 950,000,000   $ 950,000,000
5.375% Senior Notes due 2022 [Member]      
Debt Instrument [Line Items]      
Interest rate, stated percentage 5.375%    
Extinguishment of Debt, Amount $ 250,000,000    
Redemption Premium Payment, Extinguishment of Debt 3,400,000    
Payment of Accrued Interest and Fees $ 30,800,000    
5.625% Senior Notes Due 2026 [Member]      
Debt Instrument [Line Items]      
Face amount   $ 300,000,000  
Interest rate, stated percentage   5.625% 5.625%
2.5% Convertible Senior Notes Due 2023 [Member]      
Debt Instrument [Line Items]      
Face amount   $ 550,000,000 $ 550,000,000
Interest rate, stated percentage   2.50%  
5.625% Senior Notes Due 2026 & 2.5% Convertible Senior Notes Due 2023 [Member]      
Debt Instrument [Line Items]      
Proceeds from Issuance of Debt   $ 850,000,000.0  
2.5% Convertible Senior Notes due 2019 [Member]      
Debt Instrument [Line Items]      
Interest rate, stated percentage   2.50% 2.50%
Extinguishment of Debt, Amount   $ 246,300,000  
Redemption Premium Payment, Extinguishment of Debt   90,400,000  
Payment of Accrued Interest and Fees   $ 20,800,000