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Income Taxes (Net Deferred Income Tax Asset (Liability) by Jurisdiction) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred Income Taxes Assets	$ 744	$ 10
Deferred Income Tax Liabilities	(402)	(202)
Net Deferred Income Tax Asset	342
Net Deferred Income Tax Liability		(192)
United States [Member]
Deferred Income Taxes Assets	0	0
Deferred Income Tax Liabilities	(402)	(202)
Canada [Member]
Deferred Income Taxes Assets	744	10
Deferred Income Tax Liabilities	$ 0	$ 0

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences.

+ References

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
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-Topic 740
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- Definition

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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+ References

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