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Equity Accumulated Other Comprehensive Loss - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | $ (56) |  |  |  |
Income tax benefit |  | (1) |  | $ (2) | $ (1) |
Current period change |  | (3) |  | (4) | (6) |
Accumulated Other Comprehensive Income (Loss), Ending Balance |  | (59) |  | (56) |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | 1,767 |  | 2,096 | 2,315 | $ 2,622
Dividends [Abstract] |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared |  |  |  |  |  | $ 0.09
Payments of Ordinary Dividends, Common Stock |  | 0 |  | 31 | 45 |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  | $ (22)
Currency Translation Adjustments (1) |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | [1] | (8) |  | (8) | (4) |
Other comprehensive loss before reclassifications | [1] | 0 |  | 0 | (3) |
Amounts reclassified from accumulated other comprehensive loss | [1] | 0 |  | 0 | 0 |
Income tax benefit | [1] | 0 |  | 0 | 0 |
Current period change | [1] | 0 |  | 0 | (4) |
Accumulated Other Comprehensive Income (Loss), Ending Balance | [1] | (8) |  | (8) | (8) | (4)
Currency Translation Adjustments (1) | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | [1],[2] |  |  |  | (1) |
Accumulated Other Comprehensive Income (Loss), Ending Balance | [1],[2] |  |  |  |  | (1)
Minimum Pension Liability Adjustment | Minimum |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance |  | (48) |  | (44) | (33) |
Other comprehensive loss before reclassifications |  | (6) |  | (8) | (6) |
Amounts reclassified from accumulated other comprehensive loss | [3] | 2 |  | 2 | 2 |
Income tax benefit |  | 1 |  | 2 | 1 |
Current period change |  | (3) |  | (4) | (11) |
Accumulated Other Comprehensive Income (Loss), Ending Balance |  | (51) |  | (48) | (44) | (33)
Minimum Pension Liability Adjustment | Minimum | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | [2] |  |  |  | (8) |
Accumulated Other Comprehensive Income (Loss), Ending Balance | [2] |  |  |  |  | (8)
Accumulated Other Comprehensive Loss (2) |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Beginning Balance | [4] | (56) |  | (52) | (37) |
Other comprehensive loss before reclassifications | [4] | (6) |  | (8) | (9) |
Amounts reclassified from accumulated other comprehensive loss | [4] | 2 |  | 2 | 2 |
Income tax benefit | [4] | 1 |  | 2 | 1 |
Current period change |  | (3) | [4] | (4) | (6) |
Accumulated Other Comprehensive Income (Loss), Ending Balance | [4] | (59) |  | (56) | (52) | (37)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest |  | $ (59) |  | (56) | (52) | (37)
Accumulated Other Comprehensive Loss (2) | Accounting Standards Update 2018-02 |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Current period change | [4] |  |  | $ (4) | $ (15) |
Accumulated Other Comprehensive Loss (2) | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest | [4] |  |  |  |  | $ (9)
[1] | Assets and liabilities of foreign subsidiaries having non-U.S. dollar functional currencies are translated at exchange rates at the balance sheet dates and equity accounts are translated at historical spot rates. Revenues and expenses are translated at average exchange rates during the periods presented. The gains or losses resulting from translating foreign currency financial statements into U.S. dollars are included in accumulated other comprehensive income (loss). Gains or losses resulting from foreign currency transactions are included in the Consolidated Statements of Operations.
[2] | These amounts represent adjustments for the adoption of the accounting standard update on stranded tax effects related to the 2017 Tax Act which resulted in a debit to Accumulated other comprehensive loss and a credit to Accumulated deficit of $9 million during the first quarter of 2018.
[3] | These amounts represent the amortization of actuarial loss to periodic pension cost and were reclassified from accumulated other comprehensive income to the general and administrative expenses line on the statement of operations.
[4] | As of December 31, 2020, the Company does not have any after-tax components of accumulated other comprehensive loss attributable to noncontrolling interests.

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