DEBT - Schedule of Short-term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2026	Mar. 31, 2025
Short-Term Debt [Line Items]
Short-term debt, gross	$ 30.0	$ 1,150.0
Unamortized discount and issuance cost	0.0	(1.5)
Short-term debt, net	30.0	1,148.5
Significant other observable inputs (level 2)
Short-Term Debt [Line Items]
Short-term debt, gross	$ 30.0	$ 1,152.6
2026 Convertible Notes
Short-Term Debt [Line Items]
Annual Interest Rate	0.00%	0.00%
Short-term debt, gross	$ 30.0
2026 Convertible Notes \| Significant other observable inputs (level 2)
Short-Term Debt [Line Items]
Short-term debt, gross	$ 30.0
2025 Notes
Short-Term Debt [Line Items]
Annual Interest Rate		3.55%
Short-term debt, gross		$ 600.0
2025 Notes \| Significant other observable inputs (level 2)
Short-Term Debt [Line Items]
Short-term debt, gross		$ 599.9
2026 Notes
Short-Term Debt [Line Items]
Annual Interest Rate		5.00%
Short-term debt, gross		$ 550.0
2026 Notes \| Significant other observable inputs (level 2)
Short-Term Debt [Line Items]
Short-term debt, gross		$ 552.7

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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Reference 6: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant