Earnings Per Share - Additional Information (Details) - shares shares in Millions |
3 Months Ended | 12 Months Ended | ||
---|---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Common stock equivalents (in shares) | 3 | 3 | 3 | |
Stock Options and Restricted Stock Awards | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Common stock equivalents (in shares) | 2 | |||
Preferred Stock | Convertible Debt Securities | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Common stock equivalents (in shares) | 40 | |||
4.00% senior exchangeable notes due 2025 | Senior Secured Notes | Convertible Debt Securities | ||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
Common stock equivalents (in shares) | 44 |