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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of provision for income tax benefit (expense) | Our income tax benefit (expense) consisted of the following for the years ended December 31 (in millions):
|  | 2023 |  | 2022 |  | 2021
Deferred: |  |  |  |  |  |
Federal |  | $ | 43 |  |  | $ | 86 |  |  | $ | 44 |
State |  | 6 |  |  | (13) |  |  | 44 |
Foreign |  | (22) |  |  | — |  |  | — |
Deferred income tax benefit |  | 27 |  |  | 73 |  |  | 88 |
Current: |  |  |  |  |  |
Federal |  | 1 |  |  | 3 |  |  | (3) |
State |  | 1 |  |  | — |  |  | (5) |
Foreign |  | (5) |  |  | (1) |  |  | 1 |
Current income tax benefit (expense) |  | (3) |  |  | 2 |  |  | (7) |
Total income tax benefit |  | $ | 24 |  |  | $ | 75 |  |  | $ | 81 |
Schedule of income taxes differed from the federal income tax statutory rate | Our income tax benefit reconciles to the amount computed below by applying the U.S. federal statutory income tax rate to our loss before income taxes for the years ended December 31 as follows (in millions):
|  | 2023 |  | 2022 |  | 2021
Income tax benefit at statutory rate |  | $ | 70 |  |  | $ | 92 |  |  | $ | 55 |
State income tax, net of federal benefit |  | 7 |  |  | (13) |  |  | 36 |
Nondeductible expenses |  | (14) |  |  | (8) |  |  | (5) |
Foreign rate differential |  | — |  |  | (4) |  |  | 5 |
Valuation allowance |  | (49) |  |  | 2 |  |  | (4) |
Unrecognized tax benefit (expense) |  | — |  |  | 3 |  |  | (7) |
Research & Development tax credits |  | 11 |  |  | — |  |  | — |
Other, net |  | (1) |  |  | 3 |  |  | 1 |
Total income tax benefit |  | $ | 24 |  |  | $ | 75 |  |  | $ | 81 |
Schedule of deferred tax assets and deferred liabilities | The components of our deferred tax assets and liabilities as of December 31 are as follows (in millions):
|  | 2023 |  | 2022
Deferred tax assets: |  |  |  |
Deferred revenue/gains |  | 220 |  |  | 271 |
Employee benefits |  | 95 |  |  | 72 |
Foreign tax credit |  | 90 |  |  | 78 |
Other credits |  | 15 |  |  | 4 |
Net operating loss carryforward |  | 914 |  |  | 709 |
Interest expense limitation carryforward |  | 50 |  |  | 29 |
Operating lease liabilities |  | 161 |  |  | 194 |
Rent expense |  | 18 |  |  | 84 |
Transaction costs |  | 25 |  |  | 13 |
Sec. 174 research activities |  | 27 |  |  | 16 |
Other |  | 16 |  |  | 20 |
Total deferred tax assets |  | 1,631 |  |  | 1,490 |
Valuation allowance |  | (153) |  |  | (90) |
Deferred tax assets, net |  | 1,478 |  |  | 1,400 |
Deferred tax liabilities: |  |  |  |
Property and equipment |  | (2,049) |  |  | (1,963) |
Operating lease assets |  | (143) |  |  | (173) |
Other |  | (29) |  |  | (34) |
Total deferred tax liabilities |  | (2,221) |  |  | (2,170) |
Net deferred tax liability |  | $ | (743) |  |  | $ | (770) |
Schedule of reconciliation of the beginning and ending amount of unrecognized tax benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
|  | 2023 |  | 2022 |  | 2021
Unrecognized tax benefits at January 1, |  | $ | 26 |  |  | $ | 40 |  |  | $ | 32 |
Increases for tax positions taken during the period |  | — |  |  | 5 |  |  | 2 |
Decreases for tax positions taken during the period |  | (5) |  |  | (6) |  |  | (1) |
Increases for tax positions taken during a prior period |  | 5 |  |  | — |  |  | 19 |
Decreases for tax positions taken during a prior period |  | (1) |  |  | (13) |  |  | (12) |
Unrecognized tax benefits December 31, |  | $ | 25 |  |  | $ | 26 |  |  | $ | 40 |

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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 19 -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-19 + Details
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