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Income Taxes
 6 Months Ended
Mar. 31, 2026
Income Tax Disclosure [Abstract]  
Income Taxes INCOME TAXES
Income tax provisions for interim quarterly periods are based on an estimated annual effective income tax rate calculated separately from the effect of significant, infrequent or unusual discrete items related specifically to interim periods. The following summarizes income tax expense and the effective tax rate in each interim period:

Three months ended
March 31		Six months ended
March 31
(In millions)2026202520262025
Income tax expense$14.2 $12.6 $40.4 $45.9 
Effective tax rate percentage23.9 %24.8 %75.5 %25.8 %

The year-over-year changes in the effective tax rate for the three and six months ended March 31, 2026 were primarily attributed to the Breeze acquisition and immediate divestiture required for 45 of the acquired stores. The pre-tax loss on divestiture did not generate a tax benefit; rather, nondeductible goodwill drove an unfavorable tax effect of $20.0 million and contributed to a taxable gain on the divestiture that resulted in $6.3 million of income tax expense in the six months ended March 31, 2026. Additionally, certain transaction costs became nondeductible in connection with the acquisition close and increased income tax expense by $4.8 million in the current year-to-date period.