Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits
Balance at beginning of period	$ 18	$ 23	$ 21
Reductions based on statute expirations	(3)	(5)	(5)
Audit settlement	0	(1)	0
Additions to state reserves for prior years	4	1	7
Balance at end of period	19	$ 18	$ 23
Other Disclosures
Amounts which, if recognized, would affect the effective tax rate	19
Increase in Unrecognized Tax Benefits is Reasonably Possible	$ 3

Amount of increase reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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