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Income Taxes
 3 Months Ended
Mar. 31, 2023
Income Tax Disclosure [Abstract]  
Income Tax Disclosure Income Taxes
The income tax provision includes U.S. federal, state and local, and foreign income taxes and is generally based on the application of a forecasted annual income tax rate applied to the current quarter's year-to-date pre-tax income or loss. In determining the estimated annual effective income tax rate, the Company analyzes various factors, including projections of the Company's annual earnings or losses, taxing jurisdictions in which the earnings or losses will be generated, the impact of state and local income taxes, the Company's ability to use tax credits and net operating loss carryforwards, carrybacks, capital loss carryforwards, and available tax planning alternatives. Discrete items, including the effect of changes in tax laws, tax rates and certain circumstances with respect to valuation allowances or the tax effect of other unusual or nonrecurring transactions or adjustments are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than included in the estimated annual effective income tax rate. Additionally, the Company's interim effective income tax rate is computed and applied without regard to pre-tax losses where such losses are not expected to generate a current-year tax benefit.

A reconciliation of the U.S. federal statutory rate to the reported income tax rate is as follows:
THREE MONTHS ENDED
MARCH 31
20232022
Income (loss) before income taxes$35.9 $(21.3)
Statutory taxes (21%)$7.5 $(4.5)
Interim adjustment(0.3)(2.4)
Permanent adjustments:
Valuation allowance(0.4)10.9 
Other1.7 (0.3)
Discrete items0.2 (0.8)
Income tax expense$8.7 $2.9 
Reported income tax rate24.2 %(13.6)%
The Company's estimated annual effective income tax rate assumes that a significant portion of its net operating loss carryforwards will be utilized in 2023 and the release of the valuation allowance associated with the asset. This will be more
than offset by the capitalization of research and development expenses under current U.S. tax rules for which a valuation allowance will be provided. The net of these items is included in the valuation allowance line in the table above. The Company's reported income tax rate in the prior year differed from the U.S. federal statutory tax rate primarily as a result of recording additional valuation allowances and an interim adjustment resulting from pretax losses for which no tax benefit was recognized.