BORROWINGS - Schedule of Outstanding Borrowings (Details) - USD ($)	Jun. 30, 2025	Jun. 30, 2024	Aug. 17, 2023
Debt Instrument [Line Items]
Principal amount	$ 3,263,500,000
Current portion of long-term debt	499,300,000	$ 0
Long-term debt	2,753,000,000	3,355,100,000
Unused available capacity	1,366,500,000
Fair value of fixed-rate notes	3,101,800,000
Total long-term debt	3,252,300,000	3,355,100,000
Long Term Debt, Current Portion
Debt Instrument [Line Items]
Principal amount	500,000,000.0
Current portion of long-term debt	499,300,000	0
Fair value of fixed-rate notes	494,100,000
Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	133,500,000
Long-term debt	133,500,000	0
Unused available capacity	1,366,500,000
Fair value of fixed-rate notes	133,500,000
Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	1,750,000,000
Long-term debt	1,740,300,000	2,237,200,000
Fair value of fixed-rate notes	1,594,200,000
Long Term Debt, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	2,763,500,000
Long-term debt	2,753,000,000	3,355,100,000
Unused available capacity	1,366,500,000
Fair value of fixed-rate notes	2,607,700,000
Fiscal 2016 Senior Notes | Senior Notes, Current Maturities
Debt Instrument [Line Items]
Principal amount	500,000,000.0
Current portion of long-term debt	499,300,000	0
Fair value of fixed-rate notes	494,100,000
Fiscal 2016 Senior Notes | Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Long-term debt		498,700,000
Fiscal 2025 Revolving Credit Facility U.S. Dollar Tranche | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	0
Long-term debt	0	0
Unused available capacity	1,000,000,000
Fair value of fixed-rate notes	0
Fiscal 2025 Revolving Credit Facility Multicurrency Tranche | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	133,500,000
Long-term debt	133,500,000	0
Unused available capacity	366,500,000
Fair value of fixed-rate notes	133,500,000
Fiscal 2024 Amended Term Loan | Term Loans
Debt Instrument [Line Items]
Principal amount	880,000,000.0		$ 1,300,000,000
Long-term debt	879,100,000	1,117,900,000
Fair value of fixed-rate notes	880,000,000.0
Fiscal 2020 Senior Notes | Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	750,000,000.0
Long-term debt	746,000,000.0	745,100,000
Fair value of fixed-rate notes	702,800,000
Fiscal 2021 Senior Notes | Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	1,000,000,000
Long-term debt	994,400,000	$ 993,400,000
Fair value of fixed-rate notes	$ 891,400,000