Stock Based Compensation - Schedule of Performance Award Transactions (Details) - Performance Unit - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	6 Months Ended
Feb. 28, 2025	Feb. 29, 2024	Jun. 30, 2025	Jun. 30, 2024
Number of Shares and Units
Beginning balance (in shares)			559,000	630,000
Granted (in shares)			8,000	6,000
Granted for Performance Multiple (in shares)			54,000	0
Released (in shares)			(267,000)	(45,000)
Forfeited for Performance Multiple (in shares)			0	(135,000)
Ending balance (in shares)			354,000	456,000
Weighted Average Grant Date Fair Value
Beginning balance (in USD per share)			$ 119.05	$ 95.49
Granted (in USD per share)			134.49	125.28
Granted for Performance Multiple (in USD per share)			96.61	0
Released (in USD per share)			96.61	43.33
Forfeited for Performance Multiple (in USD per share)			0	43.33
Ending balance (in USD per share)			$ 132.97	$ 116.45
Additional Disclosures
Performance multiple applied at the completion period (as a percent)	125.00%	25.00%
Intrinsic value released			$ 34	$ 5
Aggregate intrinsic value of stock and units outstanding			$ 42	$ 57
Minimum performance units and stock allowed to be outstanding (in shares)			0
Maximum performance units allowed to be outstanding (in shares)			708,000

Maximum Performance Units and Stock Allowed to be Outstanding

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Minimum Performance Units and Stock Allowed to be Outstanding

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Performance Multiple Applied at the Completion Period

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period for Performance Multiple

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Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value for Performance Multiple

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made 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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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-4

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Intrinsic value of vested award under share-based payment arrangement. Excludes share and unit options.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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