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Income Taxes - Effective Tax Rates (Details) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Effective tax rate reconciliation |  |  |
Federal statutory rate | 21.00% | 21.00% | 21.00%
State income taxes, net of federal income tax benefits | (0.10%) | 0.20% | 0.50%
Foreign rate differential, net of United States tax paid on foreign earnings (4.6%, 3.3%, and 5.6%, respectively) | (8.30%) | (9.50%) | (8.30%)
Divestitures | 5.60% |  |
Change in Business Solutions permanent reinvestment assertion |  | 1.90% |
Lapse of statute of limitations | (9.70%) | (0.50%) | (0.70%)
Valuation allowances | 0.20% |  | 0.20%
Other | 1.00% | 0.80% | 0.20%
Effective tax rate | 9.70% | 13.90% | 12.90%

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