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Income Taxes (Effective Income Tax Rates) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Tax Disclosure [Abstract]        
Effective income tax rate 19.10% 10.60% 18.60% 12.10%