Nature of Operations and Basis of Presentation - Schedule of Components of Other Income, net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Other components of net periodic benefit cost	$ (5)	$ (6)	$ (11)	$ (12)
Net (gain) loss from investments	(23)	3	(12)	(1)
Other income, net	$ (28)	$ (3)	$ (23)	$ (13)

Amount of realized and unrealized gain (loss) on investment.

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-Topic 220
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
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- Definition

Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
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- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

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-Topic 815
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