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INDEBTEDNESS - Senior Notes and Other (Details) - USD ($)
1 Months Ended
May 31, 2019
Aug. 31, 2016
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Debt Instrument [Line Items]          
Short-term debt     $ 20,700,000 $ 26,000,000.0  
Write off of Deferred Debt Issuance Cost $ 100,000        
Purchase card program          
Debt Instrument [Line Items]          
Financing arrangement (up to)         $ 50,000,000.0
Short-term debt $ 0        
FCI Commitment Fee          
Debt Instrument [Line Items]          
Financing arrangement (up to)     $ 9,500,000    
2024 and 2026 Notes | Senior notes          
Debt Instrument [Line Items]          
Aggregate principal amount   $ 600,000,000.0      
Redemption price as percentage of principal amount   100.00%      
Redemption price as a percentage of principal amount plus accrued and unpaid interest   101.00%      
5.625% senior notes, due in August 2024          
Debt Instrument [Line Items]          
Senior notes interest rate     5.625%    
5.625% senior notes, due in August 2024 | Senior notes          
Debt Instrument [Line Items]          
Aggregate principal amount   $ 300,000,000.0      
Senior notes interest rate   5.625% 5.625%    
5.875% senior notes, due in August 2026          
Debt Instrument [Line Items]          
Senior notes interest rate     5.875%    
5.875% senior notes, due in August 2026 | Senior notes          
Debt Instrument [Line Items]          
Aggregate principal amount   $ 300,000,000.0      
Senior notes interest rate   5.875% 5.875%    
6.875% senior notes | Senior notes          
Debt Instrument [Line Items]          
Senior notes interest rate   6.875%      
Extinguishment of debt, amount   $ 600,000,000.0      
Premiums paid to redeem debt   $ 36,400,000