DERIVATIVE INSTRUMENTS - Narrative (Details) € in Millions, shares in Millions	1 Months Ended
	Feb. 29, 2024 USD ($) shares	Dec. 31, 2023 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2024 USD ($)	Mar. 31, 2024 EUR (€)	Nov. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Dec. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Authorized repurchase amount						$ 294,000,000.0			$ 196,000,000.0	$ 200,000,000.0
Accumulated other comprehensive loss				$ (712,600,000)			$ (662,400,000)
June 2022 Forward Contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Authorized repurchase amount						$ 294,000,000.0				$ 200,000,000.0
June 2022 Forward Contracts | Common Class A
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Shares repurchase cash payment	$ 200,000,000.0
Shares repurchase by shares (in shares) | shares	27.0
Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign exchange risk exposure amount (in Euros) | €					€ 1,113.5			€ 701.3
Net investment hedge | Other Foreign Currency Translation Adjustments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Accumulated other comprehensive loss				0.0			(12,200,000)
Foreign exchange forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash flow hedges in AOCI/(L), net of tax				1,200,000			700,000
Cash flow hedge to be reclassified during next 12 months				1,100,000
Foreign exchange forward contracts | Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount				19,700,000			28,000,000.0
Foreign exchange forward contracts | Net investment hedge | Other Foreign Currency Translation Adjustments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Accumulated other comprehensive loss				(37,600,000)			(37,600,000)
Cross-currency swap contracts | Net investment hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount				$ 1,627,600,000			1,653,500,000
Notional amount terminated			$ 550,000,000.0
Payment for termination of derivative			$ 37,600,000
Interest rate swap contracts | Interest Rate Risk
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount							$ 200,000,000.0
Cash receipt from interest rate swap contracts		$ 2,100,000