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Subsequent Events (Details) $ in Millions			3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 01, 2025 USD ($) service_center_store	Oct. 01, 2025 service_center_store	Dec. 31, 2024 service_center_store	Sep. 30, 2024 service_center_store	Dec. 31, 2024 service_center_store	Sep. 30, 2025 service_center_store	Sep. 30, 2024 service_center_store	Sep. 30, 2023 service_center_store
Subsequent Event [Line Items]
Number of service center stores acquired						33	36	31
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Subsequent Event [Line Items]
Number of service center stores sold			39	28	67
Subsequent Event | Forecast | Term Loan B | Secured Debt | Line of Credit
Subsequent Event [Line Items]
Aggregate principal amount | $	$ 740
Subsequent Event | Forecast | Breeze Autocare
Subsequent Event [Line Items]
Number of service center stores acquired	207
Expected purchase price of acquisition | $	$ 593
Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Subsequent Event [Line Items]
Number of service center stores sold		10
Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Forecast
Subsequent Event [Line Items]
Number of service center stores sold	45

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