SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Significant Accounting Policies [Line Items]
Restricted cash	$ 12.8	$ 13.3
Sales returns, percentage	2.00%	2.00%	1.00%
Trade spending activities, percentage	11.00%	10.00%	9.00%
Advertising expense	$ 1,607.1	$ 1,574.4	$ 1,625.5
Research and development expense	121.2	123.0	126.8
Net gains (losses) from foreign currency exchange transactions	9.3	(24.9)	(14.8)
Location, Statement of Income, Balance [Axis]: us-gaap:InterestIncomeExpenseNonoperatingNet
Significant Accounting Policies [Line Items]
Net gains (losses) from foreign currency exchange transactions	10.6	(3.8)	(16.5)
Location, Statement of Income, Balance [Axis]: us-gaap:OperatingIncomeLoss
Significant Accounting Policies [Line Items]
Net gains (losses) from foreign currency exchange transactions	$ (1.8)	(21.7)	(18.1)
Store Fixtures \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	3 years
Store Fixtures \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	5 years
Marketing furniture and fixtures
Significant Accounting Policies [Line Items]
Depreciation and amortization	$ 111.6	$ 115.7	$ 113.6
Marketing furniture and fixtures \| Minimum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	3 years
Marketing furniture and fixtures \| Maximum
Significant Accounting Policies [Line Items]
Property, plant and equipment, estimated useful life	5 years

Revenue Recognition, Reduction of Gross Revenue from Trade Spending Activities, Percentage

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Revenue Recognition, Sales returns as a percentage of gross revenues, percent

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[Line Items] for Significant Accounting Policies [Table]

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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Useful life of property, plant, and equipment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection.

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Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity.

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Amount of cash and cash equivalent restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

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