Income Taxes - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Tax Credit Carryforward [Line Items] | ||
| (Provision for) recovery of income taxes | $ 53 | $ (163) |
| Effective income tax rate reconciliation, development and expansion incentive, percent | 5.00% | |
| Tax benefit as a result of concessionary tax rate | $ 9 | 2 |
| Nondeductible expense research and development | 226 | 141 |
| Tax credit carryforwards | 104 | 70 |
| Foreign And Domestic Tax Authority | ||
| Tax Credit Carryforward [Line Items] | ||
| Non-capital tax losses | 500 | 1,220 |
| State | ||
| Tax Credit Carryforward [Line Items] | ||
| Non-capital tax losses | 1,507 | $ 1,766 |
| Non-capital tax losses, no expiration | 59 | |
| Non-capital tax losses | 1,448 | |
| Domestic Tax Authority | ||
| Tax Credit Carryforward [Line Items] | ||
| Non-capital tax losses, no expiration | 347 | |
| Non-capital tax losses | 153 | |
| Capital losses | 764 | |
| Foreign | ||
| Tax Credit Carryforward [Line Items] | ||
| Capital losses | $ 1,679 | |
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- Definition Effective Income Tax Rate Reconciliation, Development And Expansion Incentive, Expense (Benefit), Amount No definition available.
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- Definition Effective Income Tax Rate Reconciliation, Development And Expansion Incentive, Percent No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates. No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible research and development expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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