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Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) $ in Millions	3 Months Ended		9 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)
Intangible Assets:
Amortization expense	$ 2.4	$ 2.8	$ 7.5	$ 8.8
Number of reporting units \| segment			1
Future amortization of intangible assets
Fiscal 2025	2.3		$ 2.3
Fiscal 2026	8.7		8.7
Fiscal 2027	7.1		7.1
Fiscal 2028	5.3		5.3
Fiscal 2029	4.5		4.5
Thereafter	24.6		24.6
Intangible Assets
Gross Carrying Amount	130.8		130.8		$ 130.8
Accumulated Amortization	(78.0)		(78.0)		(70.5)
Net Carrying Value	52.8		52.8		60.3
Trade names
Intangible Assets
Gross Carrying Amount	70.6		70.6		70.6
Accumulated Amortization	(27.2)		(27.2)		(23.5)
Net Carrying Value	43.4		43.4		47.1
Customer and distributor relationships
Intangible Assets
Gross Carrying Amount	37.1		37.1		37.1
Accumulated Amortization	(33.2)		(33.2)		(31.1)
Net Carrying Value	3.9		3.9		6.0
Developed technology
Intangible Assets
Gross Carrying Amount	21.7		21.7		21.7
Accumulated Amortization	(16.5)		(16.5)		(14.8)
Net Carrying Value	5.2		5.2		6.9
Other
Intangible Assets
Gross Carrying Amount	1.4		1.4		1.4
Accumulated Amortization	(1.1)		(1.1)		(1.1)
Net Carrying Value	$ 0.3		$ 0.3		$ 0.3