DEBT - Long-term Debt, Net (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Debt Instrument [Line Items]
Total	$ 2,528.5	$ 3,075.9
Unamortized discount and issuance costs	(15.9)	(17.6)
Long-term debt, net	2,512.6	3,058.3
Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 2,513.6	$ 2,999.6
2025 Notes
Debt Instrument [Line Items]
Annual Interest Rate	3.55%	3.55%
Total		$ 600.0
2025 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total		$ 588.9
2026 Notes
Debt Instrument [Line Items]
Annual Interest Rate	5.00%	5.00%
Total		$ 550.0
2026 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total		$ 547.6
2027 Notes
Debt Instrument [Line Items]
Annual Interest Rate	3.70%	3.70%
Total	$ 600.0	$ 600.0
2027 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 590.8	$ 576.5
2028 Notes
Debt Instrument [Line Items]
Annual Interest Rate	4.95%	4.95%
Total	$ 800.0	$ 800.0
2028 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 808.5	$ 797.8
2029 Notes
Debt Instrument [Line Items]
Annual Interest Rate	5.40%
Total	$ 300.0
2029 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 308.3
2032 Notes
Debt Instrument [Line Items]
Annual Interest Rate	4.00%	4.00%
Total	$ 500.0	$ 500.0
2032 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 468.6	$ 462.9
2034 Notes
Debt Instrument [Line Items]
Annual Interest Rate	5.60%
Total	$ 300.0
2034 Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 308.9
2026 Convertible Notes
Debt Instrument [Line Items]
Annual Interest Rate	0.00%	0.00%
Total	$ 28.5	$ 25.9
2026 Convertible Notes \| Significant other observable inputs (level 2)
Debt Instrument [Line Items]
Total	$ 28.5	$ 25.9

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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