Earnings Per Common Share - Narrative (Details) - shares shares in Millions |
12 Months Ended | ||
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Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
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| Share-based Payment Arrangement, Option | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Securities excluded from computation of earnings per share (in shares) | 4,000,000 | ||
| Warrant | Common Stock | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Incremental common shares attributable to dilutive effect of call options and warrants (in shares) | 3,000,000 | 136 | |
| Series L Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Securities excluded from computation of earnings per share (in shares) | 62 | 62 | 62 |
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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