Quarterly report pursuant to Section 13 or 15(d)

Debt - (Summary of Debt) (Details)

v3.19.3
Debt - (Summary of Debt) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Outstanding Principal $ 2,872,727  
Deferred financing costs (6,370) $ (2,267)
Total debt 2,990,383 2,886,034
Debt classified as current (included in other current liabilities) (902,368) (900,759)
Total long-term debt 2,088,015 1,985,275
Margin Loan Facility    
Debt Instrument [Line Items]    
Outstanding Principal 900,000  
Carrying value 900,000 900,000
Exchangeable senior debentures    
Debt Instrument [Line Items]    
Outstanding Principal 477,250  
Carrying value 579,291 462,336
Senior notes    
Debt Instrument [Line Items]    
Outstanding Principal 775,000  
Carrying value 796,985 803,287
Senior credit facility    
Debt Instrument [Line Items]    
Outstanding Principal 713,280  
Carrying value 713,280 715,124
Wells Fargo note payable    
Debt Instrument [Line Items]    
Outstanding Principal 7,197  
Carrying value $ 7,197 $ 7,554