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Equity Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2022 | Jun. 30, 2022 | Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Equity compensation expense |  | $ 17 | $ 24
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value | 258,327 |  |
Stock appreciation rights granted, weighted average exercise price (per share) |  | $ 106.53 |
Shares Granted To Non Employee Directors |  | 17,937 |
Document Period End Date |  | Jun. 30, 2022 |
Options exercisable (shares) |  | 1,705,128 |
Options exercisable, weighted average price (per share) |  | $ 105.83 |
Options, remaining term |  | 4 years 3 months 18 days |
Compensation cost not yet recognized |  | $ 42 |
Period for recognition |  | 9 months 18 days |
Performance Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 78,687 |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value |  | 219,553 |

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- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. + References No definition available. + Details
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