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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions | Total | Cumulative Effect, Period of Adoption, Adjustment | Cumulative Effect, Period of Adoption, Adjusted Balance | Parent | Parent Cumulative Effect, Period of Adoption, Adjustment | Parent Cumulative Effect, Period of Adoption, Adjusted Balance | Common Stock | Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance | Additional Paid-in Capital | Additional Paid-in Capital Cumulative Effect, Period of Adoption, Adjusted Balance | AOCI Attributable to Parent | AOCI Attributable to Parent Cumulative Effect, Period of Adoption, Adjusted Balance | Retained Earnings | Retained Earnings Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance | Noncontrolling Interest | Noncontrolling Interest Cumulative Effect, Period of Adoption, Adjusted Balance
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Common shares, outstanding (in shares), beginning balance at Dec. 31, 2019 |  |  |  |  |  |  | 10,000,000 | 10,000,000 |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2019 | $ 1,793 | $ (143) | $ 1,650 | $ 1,642 | $ (143) | $ 1,499 |  |  | $ 3,496 | $ 3,496 | $ (13) | $ (13) | $ (1,851) | $ (143) | $ (1,994) | $ 151 | $ 151
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase option on non-controlling interest | 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11 |
Share-based compensation charge | 2 |  |  | 2 |  |  |  |  | 2 |  |  |  |  |  |  |  |
Net loss | (1,747) |  |  | (1,745) |  |  |  |  |  |  |  |  | (1,745) |  |  | (2) |
Other comprehensive loss | (22) |  |  | (22) |  |  |  |  |  |  | (22) |  |  |  |  |  |
Fair Value adjustment AOD Redeemable NCI | 30 |  |  | 30 |  |  |  |  |  |  |  |  | 30 |  |  |  |
Common shares, outstanding (in shares), ending balance at Jun. 30, 2020 |  |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2020 | $ (98) |  |  | (236) |  |  |  |  | 3,498 |  | (35) |  | (3,709) |  |  | 138 |
Common shares, outstanding (in shares), beginning balance at Dec. 31, 2020 | 100,384,435 |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |
Beginning balance at Dec. 31, 2020 | $ (3,140) |  |  | (3,140) |  |  |  |  | 3,504 |  | (26) |  | (6,628) |  |  | 0 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | (605) |  |  | (605) |  |  |  |  |  |  |  |  | (605) |  |  |  |
Other comprehensive loss | $ 5 |  |  | 5 |  |  |  |  |  |  | 5 |  |  |  |  |  |
Common shares, outstanding (in shares), ending balance at Jun. 30, 2021 | 100,384,435 |  |  |  |  |  | 10,000,000 |  |  |  |  |  |  |  |  |  |
Ending balance at Jun. 30, 2021 | $ (3,740) |  |  | $ (3,740) |  |  |  |  | $ 3,504 |  | $ (21) |  | $ (7,233) |  |  | $ 0 |

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