Income Taxes

6 Months Ended

Jun. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

Income TaxesIncome tax expense of $1.3 and $2.2 for the three months ended June 30, 2021 and 2020, respectively, represents taxes on both U.S. and foreign earnings at a combined effective income tax rate of 16.0% and 13.0%, respectively. Income tax expense of $4.4 and $2.6 for the six months ended June 30, 2021 and 2020, respectively, represents taxes on both U.S. and foreign earnings at a combined effective income tax rate of 11.8% and 13.4%, respectively.

The effective income tax rate of 16.0% and 11.8% for the three and six months ended June 30, 2021 differed from the U.S. federal statutory rate of 21% primarily due to losses incurred by some of our foreign operations for which no benefit was recorded, partially offset by the effect of income earned by our certain foreign entities being taxed at higher rates than the U.S. federal statutory rate and excess tax benefits associated with share-based compensation.

The effective income tax rate of 13.0% and 13.4% for the three and six months ended June 30, 2020 differed from the U.S. federal statutory rate of 21% primarily due to losses incurred by certain of our foreign operations for which no benefit was recorded, partially offset by the effect of income earned by certain of our foreign entities being taxed at higher rates than the U.S. federal statutory rate and excess tax benefits associated with share-based compensation.

As of both June 30, 2021 and December 31, 2020, we had a liability for gross unrecognized tax benefits of $1.9. This amount includes $1.3 of unrecognized tax benefits as of both June 30, 2021 and December 31, 2020, which, if ultimately recognized, would reduce our annual effective income tax rate. We recognized interest and penalties of $0.3 related to uncertain tax positions in income tax expense as of June 30, 2021.