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INCOME TAXES
9 Months Ended
Sep. 30, 2020
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
Our effective income tax rate was 13.5% and 22.0% for the three months ended September 30, 2020 and 2019, respectively, and 13.2% and 13.7% for the nine months ended September 30, 2020 and 2019, respectively. Our effective income tax rate can differ from the 21% U.S. federal statutory rate due to a number of factors, including foreign rate differences, tax incentives, increases or decreases in valuation allowances and liabilities for uncertain tax positions and excess tax benefits on stock compensation awards.
For the three months ended September 30, 2020, the difference between our effective income tax rate and the U.S. federal statutory rate was primarily attributable to a favorable geographic earnings mix and changes related to our ability to realize foreign tax credits. For the nine months ended September 30, 2020, the difference between our effective income tax rate and the U.S. federal statutory rate was primarily attributable to a favorable geographic earnings mix and excess tax benefits on stock compensation awards.
For the three months ended September 30, 2019, our effective income tax rate was substantially consistent with the 21% U.S. federal statutory rate as unfavorable return-to-provision adjustments in various jurisdictions were offset by excess tax benefits on stock compensation awards. For the nine months ended September 30, 2019, the difference between our effective tax rate and the U.S. federal statutory rate was primarily attributable to excess tax benefits on stock compensation awards and the recognition of tax benefits associated with a favorable tax ruling.