INCOME TAX	9 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
INCOME TAX	INCOME TAX Our effective income tax rates were 11.7% and 18.4% for the three months ended September 30, 2017 and September 30, 2016, respectively. Our effective income tax rates were 14.4% and 14.7% for the nine months ended September 30, 2017 and September 30, 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. In addition, as a result of adopting ASU 2016-09 on January 1, 2017, as described in "Note 1— Basis of Presentation and Summary of Significant Accounting Policies," we recognize the income tax effects of the excess benefits or deficiencies of share-based awards in the statement of income when share-based awards vest or are settled, which contributed to lower effective income tax rates in the current year periods. During the nine months ended September 30, 2016, we recorded an income tax benefit of $12.7 million associated with the elimination of certain net deferred tax liabilities associated with undistributed earnings from Canada as a result of management's plans to reinvest these earnings outside the United States indefinitely. 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.

INCOME TAX

Our effective income tax rates were 11.7% and 18.4% for the three months ended September 30, 2017 and September 30, 2016, respectively. Our effective income tax rates were 14.4% and 14.7% for the nine months ended September 30, 2017 and September 30, 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. In addition, as a result of adopting ASU 2016-09 on January 1, 2017, as described in "Note 1— Basis of Presentation and Summary of Significant Accounting Policies," we recognize the income tax effects of the excess benefits or deficiencies of share-based awards in the statement of income when share-based awards vest or are settled, which contributed to lower effective income tax rates in the current year periods. During the nine months ended September 30, 2016, we recorded an income tax benefit of $12.7 million associated with the elimination of certain net deferred tax liabilities associated with undistributed earnings from Canada as a result of management's plans to reinvest these earnings outside the United States indefinitely.

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.