Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)

v3.21.2
Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)
1 Months Ended 6 Months Ended
May 31, 2021
May 31, 2020
Aug. 31, 2018
Mar. 31, 2018
Jun. 30, 2021
2.625% Convertible Senior Notes Due 2024 [Member]          
Debt Instrument [Line Items]          
Debt instrument interest rate       2.625% 2.625%
Debt instrument maturity date       Mar. 15, 2024 May 15, 2024
7.875% Senior Notes Due 2025 [Member]          
Debt Instrument [Line Items]          
Debt instrument interest rate   7.875%     7.875%
Debt instrument maturity date   Sep. 01, 2025     Sep. 01, 2025
7.250% Senior Notes Due 2026 [Member]          
Debt Instrument [Line Items]          
Debt instrument interest rate     7.25%   7.25%
Debt instrument maturity date     Aug. 15, 2026   Aug. 15, 2026
4.875% Senior Notes Due 2029 [Member]          
Debt Instrument [Line Items]          
Debt instrument interest rate 4.875%       4.875%
Debt instrument maturity date Jun. 01, 2029       Jun. 01, 2029