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Income Tax Expense	3 Months Ended
Income Tax Expense	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Tax Expense	The effective tax rates for the three months ended March 31, 2015 and 2014 were 23.0% and 24.0%, respectively. The change in tax expense is primarily the result of changes in activity levels among jurisdictions with different tax rates.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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