CONTRACTUAL COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ARRANGEMENTS - Data Center Agreements - Capitalized Costs (Details) $ in Millions	12 Months Ended
Jun. 30, 2026 USD ($)
Data Center Agreements
Capitalized Contract Cost [Roll Forward]
Capitalized costs, beginning balance	$ 71.2
Capitalized costs incurred	0.4
Impact of foreign currency exchange	(0.3)
Total capitalized costs, ending balance	71.2
Total accumulated amortization	(67.0)
Net Deferred Costs	4.2
Amended and Restated IT Services Agreement
Capitalized Contract Cost [Roll Forward]
Capitalized costs, beginning balance	63.0
Capitalized costs incurred	0.0
Impact of foreign currency exchange	0.0
Total capitalized costs, ending balance	63.0
Total accumulated amortization	(60.1)
Net Deferred Costs	3.0
Other
Capitalized Contract Cost [Roll Forward]
Capitalized costs, beginning balance	8.1
Capitalized costs incurred	0.4
Impact of foreign currency exchange	(0.3)
Total capitalized costs, ending balance	8.2
Total accumulated amortization	(6.9)
Net Deferred Costs	$ 1.2

Capitalized Contract Cost, Costs Incurred

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Capitalized Contract Cost [Roll Forward]

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- Definition

Capitalized Contract Costs, Foreign Currency Exchange Adjustment

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- Definition

Amount of accumulated amortization of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

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Amount, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-3

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