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Income Taxes (Narrative) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Tax Disclosure [Abstract]        
Effective tax rate (as a percent) 21.20% 22.50% 39.90% 24.30%