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Equity - Common Stock (Narrative) (Details) $ in Millions |  | 2 Months Ended |
--- | --- | --- | ---
Feb. 28, 2017 vote shares | Feb. 28, 2019 USD ($) | Mar. 31, 2019 shares
Class of Stock [Line Items] |  |  |
Common stock contemplated by the Plan (in shares) | 40,000,000 |  |
Common stock reserved to settle claims of unsecured creditors (in shares) | 7,080,000 |  |
Shares issued to settle claims (in shares) |  |  | 2,770,000
Payments for repurchase of common stock, subject to claims | $ |  | $ 20 |
Number of voting rights per share | vote | 1 |  |
Common Stock |  |  |
Class of Stock [Line Items] |  |  |
Issuance of shares (in shares) | 32,920,000 |  |

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