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Equity Cash and Stock-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	May 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized	6.0
Stock-based compensation		$ 4			$ 4	$ 13	$ 12
Restricted Stock Units (RSUs)
Non Options Granted in Period				2.2
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 3.47
Performance Shares
Non Options Granted in Period			0.7	0.4
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 4.02	$ 3.64
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Other			2.2
Cash Settled Awards
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period						3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage						33.33%
Stock-based compensation		$ 28			$ 12	$ 42	$ 18

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

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-Topic 718
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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Net number of non-option equity instruments granted to participants.

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Other increase (decrease) in number of shares reserved for issuance under non-option equity instrument agreements that is not separately disclosed.

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Number of additional shares authorized for issuance under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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