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Income Tax Expense
9 Months Ended
Sep. 30, 2014
Income Tax Disclosure [Abstract]  
Income Tax Expense
INCOME TAX EXPENSE

The effective tax rates for the three months ended September 30, 2014 and 2013 were 23.0% and 24.9%, respectively. The effective tax rates for the nine months ended September 30, 2014 and 2013 were 22.7% and 25.2%, respectively. The change in tax expense is primarily the result of several items discrete to each of the three and nine months ended September 30, 2014 and 2013 along with changes in activity levels among jurisdictions with different tax rates.