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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Abstract] |  |  |
Statutory U.S. federal income tax rate | 21.00% | 21.00% | 35.00%
State income taxes, net of federal tax benefit | 0.20% | 0.10% | (0.80%)
Tax credits and incentives | (9.20%) | (8.40%) | (4.70%)
Foreign rate differential | 2.00% | 1.10% | (4.50%)
Impact of change in enacted tax law | 1.50% | (1.30%) | (17.20%)
Change in valuation allowances | (0.20%) | (3.00%) | 4.20%
U.S. tax on foreign earnings | (4.90%) | 1.00% |
Compensation and benefits | (0.70%) | 1.30% | (1.10%)
Other | 2.10% | 5.40% | 3.40%
Effective Income Tax Rate Reconciliation, Percent, Total | 11.80% | 17.20% | 14.30%

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