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Income Taxes (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets valuation allowance, reversed | $ 22 | [1] | $ (45) | $ (18)
Effective Tax Rate | (61.30%) |  | 16.70% | 16.90%
United States Federal Statutory Rate | 21.00% |  | 21.00% | 21.00%
Recognition of research and development credits | $ 59 |  | $ 67 | $ 128
Unrecognized tax benefits | 32 |  | 24 |
Deferred tax assets valuation allowance | 765 |  | 1,204 |
Deferred tax liabilities, undistributed earnings from its foreign investments | 0 |  | 11 |
Taxable temporary difference in respect of unremitted earnings | 261 |  | 137 |
Deferred income tax liabilities | 402 |  | 202 |
Unrecognized Tax Benefit, interest expense | 1 |  | 1 | 0
Unrecognized Tax Benefit, Liability for accrued interest | 1 |  | 1 |
Unremitted Earnings Permanently Reinvested [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred income tax liabilities | 13 |  | $ 7 |
Research Tax Credit Carryforward [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Recognition of research and development credits |  |  |  | $ 136
United States [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
United States Federal Statutory Rate |  |  | 21.00% | 21.00%
Unrecognized tax benefits | 54 |  | $ 59 |
United States [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred income tax liabilities | 402 |  | 202 |
United States [Member] | State Losses [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets valuation allowance | 29 |  | 29 |
Canada [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred income tax liabilities | 0 |  | 0 |
Canada [Member] | Tax Credits [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets valuation allowance | 22 |  | 0 |
Canada [Member] | Net Operating Losses [Member] |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |
Deferred tax assets valuation allowance | $ 714 |  | $ 1,175 |
[1] | The worldwide valuation allowance reversal of $498 million primarily resulted from the commercial restructure in Canada.

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