v3.22.4

Income Taxes - Expiration Periods of Deferred Tax Asset​s (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Deferred Tax Asset Expiration [Line Items] |  |  |  |
Tax loss carryforwards | $ 181 | $ 206 |  |
Employee benefits | 264 | 331 |  |
Other | 156 |  |  |
Valuation allowance | (70) | (90) | $ (91) | $ (113)
Deferred tax assets, net | 531 | $ 622 |  |
Expires within 10 years |  |  |  |
Deferred Tax Asset Expiration [Line Items] |  |  |  |
Tax loss carryforwards | 42 |  |  |
Employee benefits | 0 |  |  |
Other | 0 |  |  |
Valuation allowance | (42) |  |  |
Deferred tax assets, net | 0 |  |  |
Expires within 11-20 years |  |  |  |
Deferred Tax Asset Expiration [Line Items] |  |  |  |
Tax loss carryforwards | 31 |  |  |
Employee benefits | 0 |  |  |
Other | 1 |  |  |
Valuation allowance | 0 |  |  |
Deferred tax assets, net | 32 |  |  |
No Expiration |  |  |  |
Deferred Tax Asset Expiration [Line Items] |  |  |  |
Tax loss carryforwards | 108 |  |  |
Employee benefits | 0 |  |  |
Other | 42 |  |  |
Valuation allowance | (7) |  |  |
Deferred tax assets, net | 143 |  |  |
Other |  |  |  |
Deferred Tax Asset Expiration [Line Items] |  |  |  |
Tax loss carryforwards | 0 |  |  |
Employee benefits | 264 |  |  |
Other | 113 |  |  |
Valuation allowance | (21) |  |  |
Deferred tax assets, net | $ 356 |  |  |

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