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Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Taxes	12. Income Taxes The effective income tax rates for the six months ended June 30, 2017 and 2016 were 28.2% and 27.9%, respectively. The effective income tax rates in 2017 and 2016 were favorably impacted by a tax benefit related to share-based compensation, a tax benefit attributable to the Domestic Production Activity (Internal Revenue Code Section 199) Deduction, favorable tax rates in foreign jurisdictions, and a benefit associated with the U.S. research and development credit, offset by state and local taxes and increases to uncertain tax positions. The effective income tax rates for the three months ended June 30, 2017 and 2016 were 29.6% and 28.2%, respectively. The effective income tax rates in 2017 and 2016 were favorably impacted by a tax benefit related to share-based compensation, a tax benefit attributable to the Domestic Production Activity (Internal Revenue Code Section 199) Deduction, favorable tax rates in foreign jurisdictions, and a benefit associated with the U.S. research and development credit, offset by state and local taxes and increases to uncertain tax positions. It is reasonably possible that, within the next 12 months, total unrecognized tax benefits may decrease in the range of $4 million to $6 million, primarily as a result of the conclusion of pending U.S. federal, state and foreign income tax proceedings.

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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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