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Equity Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Equity compensation expense | $ 35 | $ 31
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | 129,146 |
Stock appreciation rights granted, weighted average exercise price (per share) | $ 138.34 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 1,638,062 |
Options exercisable, weighted average price (per share) | $ 114.32 |
Options, remaining term | 4 years 1 month 6 days |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 37 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 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 | 185,311 |
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 | 105,122 |

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