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Income Taxes
9 Months Ended
Mar. 31, 2021
Income Taxes  
Income Taxes

11. Income Taxes

The determination of the annual effective tax rate is based upon a number of significant estimates and judgments, including the estimated annual pretax income in each tax jurisdiction in which we operate and the development of tax planning strategies during the year. In addition, as a global commercial enterprise, our tax expense can be impacted by changes in tax rates or laws, the finalization of tax audits and reviews and other factors that cannot be predicted with certainty. As such, there can be significant volatility in interim tax provisions.

The effective tax rates for the three months ended March 31, 2021 and 2020 were 33.7% and (3.4)%, respectively. During the three months ended March 31, 2021, we recognized a net discrete tax expense of $2.2 million for return-to-provision true-up adjustments of $2.4 million, offset by a discrete tax benefit of ($0.2) million for equity-based compensation under ASU 2016-09. During the three months ended March 31, 2020, we recognized a discrete tax benefit of $5.1 million for a return to provision true-up adjustment.  

The effective tax rate for the nine months ended March 31, 2021 and 2020 was 30.1% and 8.7%, respectively. During the nine months ended March 31, 2021, we recognized a net discrete tax expense of $2.3 million for return-to-provision true-up adjustments of $2.8 million, offset by a ($0.5) million tax benefit from equity-based compensation under ASU 2016-09. During the nine months ended March 31, 2020, we recognized a discrete tax benefit of $12.0 million for equity-based compensation under ASU 2016-09 of $6.8 million and a return to provision true-up adjustment of $5.2 million.