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Income Taxes (U.S. Federal Statutory Rate) (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
U.S. Federal statutory rate | 21.00% | 21.00% | 21.00%
U.S. state and local income taxes—net of U.S. Federal income tax benefit | 2.30% | 2.50% | 3.00%
Differences related to non-U.S. operations | 0.10% | 2.30% | 3.00%
U.K. statutory rate change | 2.60% | 0.00% | 0.00%
Gain on consolidation of business | (1.50%) | 0.00% | 0.00%
Equity compensation | (0.70%) | (1.40%) | (1.30%)
Uncertain tax positions | 0.10% | 1.10% | 0.00%
Other | 0.70% | 1.20% | 1.60%
Effective tax rate | 24.60% | 26.70% | 27.30%

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