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- Definition

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- Definition

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- Definition

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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- Definition

Amount of liability arising from contingency in business combination, measured at acquisition-date fair value and recognized at acquisition date.

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Acquisitions - Narrative (Details) $ in Millions		12 Months Ended
Acquisitions - Narrative (Details) $ in Millions	Sep. 30, 2025 branch_location	Feb. 01, 2026 USD ($)	May 03, 2026 USD ($)	Jan. 26, 2026 branch_location
Business Combination [Line Items]
Transaction value		$ 76
Goodwill, expected tax deductible amount			$ 24
Pioneer Supply
Business Combination [Line Items]
Number of branch locations acquired \| branch_location				2
Canada Waterworks
Business Combination [Line Items]
Number of branch locations acquired \| branch_location	3
Contingent consideration			14
Canada Waterworks \| Minimum
Business Combination [Line Items]
Contingent consideration liability			0
Canada Waterworks \| Maximum
Business Combination [Line Items]
Contingent consideration liability			$ 18
Contingent consideration EBITDA target period	2 years