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Equity Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Equity compensation expense | $ 29 | $ 37
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 | 1,281,263 |
Options exercisable, weighted average price (per share) | $ 124.33 |
Options, remaining term | 4 years |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 51 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 1 year 8 months 12 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 |

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