v3.22.0.1

Income Taxes - Deferred Tax Assets and Liabilities​ (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Deferred tax assets |  |  |  |
Employee benefits | $ 331 | $ 503 |  |
Tax loss carryforwards | 206 | 167 |  |
Deferred income | 47 | 6 |  |
Deferred Tax Asset, Interest Carryforward | 44 | 15 |  |
Operating lease right-of-use asset | 30 | 37 |  |
Loss provisions | 24 | 42 |  |
Depreciation | 13 | 13 |  |
Other | 17 | 2 |  |
Deferred tax assets, gross | 712 | 785 |  |
Valuation allowance | (90) | (91) | $ (113) | $ (107)
Deferred tax assets, net | 622 | 694 |  |
Deferred tax liabilities |  |  |  |
Deferred Tax Liabilities, Accounting Method Change | 97 |  |  |
Employee benefits | 0 | 3 |  |
Operating lease liabilities | 30 | 37 |  |
Depreciation | 267 | 256 |  |
Deferred expense | 0 | 80 |  |
Other | 11 | 4 |  |
Deferred tax liabilities | $ 405 | $ 380 |  |

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