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INCOME TAX
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
INCOME TAX
INCOME TAX

Our effective income tax rates were 18.9% and 23.4% for the three months ended March 31, 2017 and March 31, 2016, respectively. Our effective income tax rates differ from the U.S. statutory rate primarily due to income generated in international jurisdictions with lower tax rates.

We conduct business globally and file income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business, we are subject to examination by taxing authorities around the world, including, without limitation, the United States and the United Kingdom. We are no longer subject to state income tax examinations for years ended on or before May 31, 2008, U.S. federal income tax examinations for fiscal years prior to 2013 and U.K. federal income tax examinations for years ended on or before May 31, 2013.