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Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Capitalized repair and maintenance costs	$ 315	$ 230
Pension assets	97	57
Deferred income taxes	291	303
Miscellaneous	94	87
Total other assets	$ 797	$ 677

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- Definition

Capitalized repair and maintenance costs.

+ References

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and other assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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- Definition

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

+ References

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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Amount of noncurrent assets classified as other.

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