Quarterly report pursuant to Section 13 or 15(d)


3 Months Ended
Mar. 31, 2022
Income Tax Disclosure [Abstract]  
We are subject to U.S. federal, state and international income taxes. We are generally no longer subject to federal, state, or international income tax examinations by tax authorities for years before 2018 with a few exceptions. Due to the potential for resolution of state and foreign examinations, and the expiration of various statutes of limitations, it is reasonably possible that our gross unrecognized tax benefit balance may change within the next twelve months by a range of $0 to $8.1 million.
Effective Tax Rate

Our effective income tax rate was 26.7% for the three months ended March 31, 2022, compared to 24.4% for the three months ended March 31, 2021. Our effective tax rate was higher during the first quarter of 2022 as compared to 2021 due to a greater foreign income tax rate differential and a change in deferred tax balances driven by a change in state law. The increase in the foreign rate differential was driven by the fair value adjustment of our equity investment in Brazil and adjustment to fully impair our investment in Russia.