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Income Taxes (Income Tax Expense From Continuing Operations And Effective Tax Rate) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Income Tax Disclosure [Abstract]        
Income tax expense from continuing operations $ 34,692 $ 29,486 $ 104,227 $ 88,565
Effective tax rate 23.00% 24.00% 24.00% 24.00%