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INCOME TAXES
 6 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
INCOME TAXES INCOME TAXES
Our effective income tax rate was 23.2% and 14.5% for the three months ended June 30, 2021 and 2020, respectively, and 19.1% and 13.0% for the six months ended June 30, 2021 and 2020, 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 June 30, 2021, the difference between our effective income tax rate and the U.S. federal statutory rate was primarily attributable to an unfavorable court decision in a foreign jurisdiction related to an uncertain tax position.
For the six months ended June 30, 2021, 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 decreases in accrued withholding taxes in several foreign jurisdictions, partially offset by an unfavorable court decision in a foreign jurisdiction related to an uncertain tax position.
For the three and six months ended June 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.