Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Convertible Debt Instruments (Details)

v3.21.1
Long-Term Debt - Convertible Debt Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Fair Value $ 13,911,700 $ 14,197,800
Payment-in-kind interest premium   19,300
Exchangeable Senior Secured Notes Due 2024    
Debt Instrument [Line Items]    
Principal amount 862,500 862,500
Unamortized debt discount, including deferred financing fees (25,934) (27,559)
Net carrying amount $ 836,566 834,941
Remaining discount amortization period 3 years 1 month 6 days  
2025 Exchangeable Notes    
Debt Instrument [Line Items]    
Principal amount $ 450,000 450,000
Unamortized debt discount, including deferred financing fees (10,189) (10,609)
Net carrying amount $ 439,811 439,391
Remaining discount amortization period 4 years 3 months 18 days  
Private Exchangeable Notes    
Debt Instrument [Line Items]    
Principal amount   414,311
Unamortized debt discount, including deferred financing fees   (136,163)
Net carrying amount   278,148
Level 2 | Exchangeable Senior Secured Notes Due 2024    
Debt Instrument [Line Items]    
Fair Value $ 1,920,029 1,812,975
Level 2 | 2025 Exchangeable Notes    
Debt Instrument [Line Items]    
Fair Value $ 804,002 772,412
Level 2 | Private Exchangeable Notes    
Debt Instrument [Line Items]    
Fair Value   $ 1,098,082