v3.26.1
Supplemental Financial Information - Disaggregation of Sales by Timing of Revenue Recognized and Revenue by Category (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Net revenues $ 544.6 $ 439.0 $ 1,510.2 $ 1,256.5
Oil changes and related fees        
Disaggregation of Revenue [Line Items]        
Net revenues 405.4 319.3 1,111.5 912.0
Non-oil changes and related fees        
Disaggregation of Revenue [Line Items]        
Net revenues 110.0 93.9 321.1 275.2
Franchise fees and other        
Disaggregation of Revenue [Line Items]        
Net revenues 29.2 25.8 77.6 69.3
Net revenues transferred at a point in time        
Disaggregation of Revenue [Line Items]        
Net revenues 519.0 416.1 1,437.9 1,191.9
Franchised revenues transferred over time        
Disaggregation of Revenue [Line Items]        
Net revenues $ 25.6 $ 22.9 $ 72.3 $ 64.6