Equity Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation expense	$ 25	$ 26
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	120,011
Stock appreciation rights granted, weighted average exercise price (per share)	$ 193.00
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,292,554
Options exercisable, weighted average price (per share)	$ 124.28
Options, remaining term	4 years 2 months 12 days
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 66
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	9 months 18 days
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	131,836
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	86,474

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

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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