Earnings Per Common Share - Antidilutive Securities (Details) - shares shares in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Stock Options | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Average options to purchase shares of common stock (in shares) | 21 | 45 | 66 |
| Common Stock | Warrant | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Average options to purchase shares of common stock (in shares) | 122 | 122 | 122 |
| Series L Preferred Stock | Convertible Preferred Stock Subject to Mandatory Redemption | |||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||
| Average options to purchase shares of common stock (in shares) | 62 | 62 | 62 |
| X | ||||||||||
- 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/presentationRef
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|