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Income Taxes (Schedule Of Income Tax Expense From Continuing Operations Percentage) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Statutory federal income tax rate 35.00% 35.00% 35.00%
State taxes, net of federal benefit 0.90% 1.60% 1.00%
Tax effect of foreign operations (6.00%) (5.80%) (7.50%)
Deferred tax on undistributed foreign earnings 0.50% (1.00%) 0.40%
Stock-based compensation 3.40% (0.00%) (0.00%)
Change in valuation allowance 0.20% 0.00% 0.20%
Change in uncertain tax positions, net (0.60%) (0.50%) (0.60%)
Domestic production activities deduction (1.20%) (1.20%) (3.40%)
Other permanent differences, net (0.60%) (1.00%) (0.70%)
Other, net (0.20%) 0.00% (0.60%)
Effective tax rate 24.60% 27.10% 23.80%