v3.25.4

Goodwill and intangible assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Beginning balance	$ 1,051.2
Cumulative translation adjustment	0.1
Ending balance	1,051.3
Batteries & Lights
Goodwill [Roll Forward]
Beginning balance	902.7
Cumulative translation adjustment		$ 0.6
Ending balance	903.3
Auto Care
Goodwill [Roll Forward]
Beginning balance	148.5
Cumulative translation adjustment	(0.5)
Ending balance	$ 148.0

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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