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Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions | Total | Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member] | Retained Earnings [Member] Accounting Standards Update 2016-13 [Member] | AOCI Attributable to Parent [Member] | Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Common Stock Held in Treasury, at Cost [Member] | Noncontrolling Interest [Member] | Parent Company [Member] | Parent Company [Member] Retained Earnings [Member] | Parent Company [Member] AOCI Attributable to Parent [Member] | Parent Company [Member] Additional Paid-in Capital [Member] | Parent Company [Member] Common Stock Held in Treasury, at Cost [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2018 | $ 1,633 |  | $ 1,421 |  | $ (49) | $ 0 | $ 0 | $ 219 | $ 0 | $ 41 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income (loss) | (125) |  | (216) |  | 91 | 0 | 0 | 0 | 0 | 0 | $ (125) | $ (216) | $ 91 |  |
Stock-based compensation | 12 |  | 0 |  | 0 | 0 | 0 | 12 | 0 | 0 | 12 |  |  | $ 12 |
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture | (3) |  | (3) |  | 0 | 0 | 0 | 0 | 0 | 0 | (3) | (3) |  |  | $ 0
AMPS Impact on Stockholders Equity | 19 |  |  |  |  |  |  |  |  | 19 |  |  |  |  |
Ending balance at Dec. 31, 2019 | 1,536 |  | 1,203 |  | 42 | 0 | 0 | 232 | 0 | 60 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income (loss) | (400) |  | (437) |  | 37 | 0 | 0 | 0 | 0 | 0 | (400) | (437) | 37 |  |
Stock-based compensation | 11 |  | 0 |  | 0 | 0 | 0 | 11 | 0 | 0 | 11 |  |  | 11 | 0
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture | (3) |  | (2) |  | 0 | 0 | 0 | 0 | (1) | 0 | (3) | (2) |  |  | (1)
Ending balance at Dec. 31, 2020 | 1,140 |  | 759 |  | 79 | 0 | 0 | 242 | (1) | 60 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Increase from Subsidiary Equity Issuance | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total comprehensive income (loss) | (38) |  | (17) |  | (21) | 0 | 0 | 0 | 0 | 0 | (38) | (17) | $ (21) |  |
Effect of New Accounting Principle |  | $ (4) |  | $ (4) |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | 14 |  | 0 |  | 0 | 0 | 0 | 14 | 0 | 0 | 14 |  |  | $ 14 |
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture | (6) |  | (4) |  | 0 | 0 | 0 | 0 | (2) | 0 | $ (6) | $ (4) |  |  | $ (2)
Ending balance at Dec. 31, 2021 | 1,098 |  | 726 |  | $ 58 | $ 0 | $ 0 | $ 257 | $ (3) | $ 60 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Change in Redemption Value | $ (12) |  | $ (12) |  |  |  |  |  |  |  |  |  |  |  |

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