Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Redemption Price, Percentage (Details)

v3.20.4
Long-Term Debt - Redemption Price, Percentage (Details) - 6.125% Notes
12 Months Ended
Dec. 31, 2020
Beginning on March 15, 2022  
Debt Instrument, Redemption [Line Items]  
Redemption Price 103.063%
Beginning on March 15, 2023  
Debt Instrument, Redemption [Line Items]  
Redemption Price 102.042%
Beginning on March 15, 2024  
Debt Instrument, Redemption [Line Items]  
Redemption Price 101.021%
Beginning on March 15, 2025 and thereafter  
Debt Instrument, Redemption [Line Items]  
Redemption Price 100.00%