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Income Taxes - Foreign Earnings Percentage (Details) - Pre-tax income [Member] - Geographic Concentration Risk [Member]
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Concentration Risk [Line Items]      
Concentration Risk, Percentage 12.00% 15.00% 14.00%
Concentration Risk, Benchmark Description pre-tax income    
Concentration Risk, Additional Characteristic foreign operations