SHORT-TERM INVESTMENTS - Schedule of Short-Term Investments (Details) - USD ($) $ in Millions	Sep. 30, 2022	Mar. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	$ 353.7	$ 825.9
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(5.7)	(5.8)
Fair Value	348.0	820.1
Bank-time deposits
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	17.3	131.8
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	17.3	131.8
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	316.7	544.3
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	(5.7)	(5.8)
Fair Value	311.0	538.5
US Treasuries
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	5.0	23.4
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	5.0	23.4
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost		125.4
Gross Unrealized Gains		0.0
Gross Unrealized Losses		0.0
Fair Value		125.4
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	14.7	1.0
Gross Unrealized Gains	0.0	0.0
Gross Unrealized Losses	0.0	0.0
Fair Value	$ 14.7	$ 1.0

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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