BORROWINGS - Schedule of Outstanding Borrowings (Details) - USD ($) $ in Millions	Mar. 31, 2026	Aug. 21, 2025	Jun. 30, 2025
Debt Instrument [Line Items]
Principal amount	$ 3,238.3
Current portion of long-term debt	499.8		$ 499.3
Long-term debt	2,727.2		2,753.0
Unused available capacity	1,261.7
Fair value of fixed-rate notes	3,079.3
Total long-term debt	3,227.0		3,252.3
Long Term Debt, Current Portion
Debt Instrument [Line Items]
Principal amount	500.0
Current portion of long-term debt	499.8		499.3
Fair value of fixed-rate notes	498.8
Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	238.3
Long-term debt	238.3		133.5
Unused available capacity	1,261.7
Fair value of fixed-rate notes	238.3
Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	1,750.0
Long-term debt	1,741.7		1,740.3
Fair value of fixed-rate notes	1,592.2
Long Term Debt, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	2,738.3
Long-term debt	2,727.2		2,753.0
Unused available capacity	1,261.7
Fair value of fixed-rate notes	2,580.5
Fiscal 2016 Senior Notes | Senior Notes, Current Maturities
Debt Instrument [Line Items]
Principal amount	500.0
Current portion of long-term debt	499.8		499.3
Fair value of fixed-rate notes	498.8
Fiscal 2025 Revolving Credit Facility U.S. Dollar Tranche | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	170.0
Long-term debt	170.0		0.0
Unused available capacity	830.0
Fair value of fixed-rate notes	170.0
Fiscal 2025 Revolving Credit Facility Multicurrency Tranche | Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount	68.3
Long-term debt	68.3		133.5
Unused available capacity	431.7
Fair value of fixed-rate notes	68.3
Fiscal 2026 Term Loan | Term Loans
Debt Instrument [Line Items]
Principal amount	750.0	$ 750.0
Long-term debt	747.2		879.1
Fair value of fixed-rate notes	750.0
Fiscal 2020 Senior Notes | Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	750.0
Long-term debt	746.7		746.0
Fair value of fixed-rate notes	701.9
Fiscal 2021 Senior Notes | Senior Notes, Excluding Current Maturities
Debt Instrument [Line Items]
Principal amount	1,000.0
Long-term debt	995.1		$ 994.4
Fair value of fixed-rate notes	$ 890.3