MARKETABLE SECURITIES - Contractual Maturities of Available-for-Sale Debt Securities (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Amortized Cost
Less than one year	$ 17.8
One to five years	30.9
Six to ten years	43.9
Greater than ten years	80.2
Amortized Cost	172.8	$ 169.5
Fair Value
Less than one year	17.7
One to five years	30.3
Six to ten years	42.5
Greater than ten years	72.5
Fair Value	$ 163.0	$ 164.3

Amortized cost of 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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