v3.25.2
Acquisitions and Dispositions - Schedule of Aggregate Cash Consideration and Total Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Millions
 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Business Combination [Line Items]    
Property, plant and equipment $ 3.9 $ 4.8
Operating lease assets 11.1 8.6
Goodwill 23.7 26.3
Other current liabilities (0.2) (0.1)
Operating lease liabilities (11.1) (8.6)
Other noncurrent liabilities (3.1) (3.0)
Total net assets acquired 32.3 28.2
Non-cash consideration (0.2) (0.3)
Total cash consideration transferred $ 32.1 $ 27.9
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property, plant and equipment, net Property, plant and equipment, net
Finance lease assets $ 3.3 $ 3.1
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Other noncurrent liabilities Other noncurrent liabilities
Finance lease liabilities, current $ 0.2 $ 0.1
Finance lease liabilities, noncurrent $ 3.1 $ 3.0
Weighted average amortization period 10 years 5 years
Reacquired franchise rights    
Business Combination [Line Items]    
Intangible assets $ 7.6 $ 0.0
Weighted average amortization period 10 years  
Other    
Business Combination [Line Items]    
Intangible assets $ 0.4 $ 0.2