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Income Taxes (Summary of Income Taxes Paid (Recovered)) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Dec. 31, 2023

Income Taxes Paid (Recovered), net:

Federal

$ 17

State

^[1]

(3)

Income Taxes Paid (Recovered), net

62

$ 295

$ (19)

Canada Revenue Agency [Member] | Canada [Member]

Income Taxes Paid (Recovered), net:

Foreign

36

Canada Revenue Agency [Member] | Province [Member]

Income Taxes Paid (Recovered), net:

Foreign

^[2]

$ 12

[1]	Primarily includes taxes paid to (recovered from) Texas.
[2]	Primarily includes taxes paid to (recovered from) Alberta.

X

- Definition

Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

+ References

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