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Income Taxes (Narrative) (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Tax Disclosure [Abstract]        
Effective income tax rate 26.70% 23.60% 23.50% 18.60%
Percentage of excess tax benefit included in effective income tax rage     3.00% 7.50%