Restructuring and other (Details) - USD ($) $ in Millions	12 Months Ended
Restructuring and other (Details) - USD ($) $ in Millions	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring Incurred Cost Statement Of Income Or Comprehensive Income Extensible Enumeration Not Disclosed Flag			exit and disposal costs
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and other	$ 0.0	$ 0.0	$ 6.8

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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