INCOME TAXES (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
Mar. 31, 2025	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2024
Income Tax Contingency [Line Items]
Effective income tax rate (as a percent)		10.50%	5.80%	13.50%	10.10%
Effective canadian statutory income tax rate (as a percent)		26.50%		26.50%
Unrecognized tax benefits	$ 150.6	$ 150.6		$ 150.6		$ 180.4
Interest and penalties accrued	19.2	19.2		19.2		24.3
Possible decrease in tax expense in next 12 months	31.4	31.4		31.4
Provision for deferred income tax liabilities	18.1	18.1		18.1		$ 15.9
Pending Litigation
Income Tax Contingency [Line Items]
Refund receivable	43.8	$ 43.8		$ 43.8
Interest received	$ 4.0

Effective Income Tax Rate Reconciliation At Foreign Statutory Income Tax Rate

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of deferred tax liability attributable to taxable temporary differences from reserves and accruals.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

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Interest expense (income) directly attributable to an award in settlement of litigation.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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