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Income Taxes (Notes)	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	10. Income Taxes For interim reporting periods, the Company’s provision for income taxes is calculated using its annualized estimated effective tax rate for the year. This rate is based on its estimated full-year income and the related income tax expense for each jurisdiction in which the Company operates. Changes in the geographical mix, permanent differences or the estimated level of annual pre-tax income can affect the effective tax rate. This rate is adjusted for the effects of discrete items occurring in the period. The Tax Cuts and Jobs Act ("TCJA") was enacted on December 22, 2017. The TCJA reduced the U.S. federal corporate income tax rate from 35% to 21%, effective January 1, 2018. At March 31, 2018 and December 31, 2017, the Company had not completed its accounting for the tax effects of enactment of the TCJA; however, the Company made a reasonable estimate of the effects related to the disallowance of executive compensation and meals and entertainment and will continue to evaluate and analyze the impact of the legislation. At December 31, 2017, the Company made a reasonable estimate of the transition tax liability related to its foreign subsidiaries. As of March 31, 2018, we have not changed the provisional estimates recognized in 2017. No additional income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax, or any additional outside basis differences inherent in the entities, as these amounts continue to be indefinitely reinvested in foreign operations.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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