INVESTMENTS IN VARIABLE INTEREST ENTITIES (Details) - USD ($) $ in Millions	1 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2025	May 31, 2025	Apr. 30, 2025	Jul. 31, 2024	Aug. 31, 2022	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Jul. 31, 2025	Dec. 31, 2024	Jun. 30, 2022	Apr. 30, 2021	Feb. 28, 2019
Variable Interest Entity [Line Items]
Assets	$ 13,488.7					$ 13,488.7		$ 13,488.7			$ 13,055.3
Liabilities	2,882.2					2,882.2		2,882.2			2,992.4
Payment for acquisition options								17.0	$ 10.8
Loss on impairment						47.1	$ 0.0	47.1	$ 0.0
Investment in preferred equity securities	166.8					166.8		166.8			119.1
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	242.8					242.8		242.8			252.3
Liabilities	23.3					23.3		23.3			24.3
Variable Interest Entity, Not Primary Beneficiary | JenaValve Technology, Inc
Variable Interest Entity [Line Items]
Maximum secured promissory note				$ 75.0
Automatic funding extension clause amount				30.0
Investee drew additional amount	52.5					52.5		52.5			15.0
Termination loan clause				$ 45.0
Variable Interest Entity, Not Primary Beneficiary | JenaValve Technology, Inc | Subsequent Event
Variable Interest Entity [Line Items]
Investee drew additional amount										$ 7.5
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company August 2022 Investment
Variable Interest Entity [Line Items]
Payment for acquisition options					$ 47.1
Loss on impairment	47.1
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company August 2022 Investment | Subsequent Event
Variable Interest Entity [Line Items]
Additional required investment										$ 10.0
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company, April 2021 Investment
Variable Interest Entity [Line Items]
Maximum secured promissory note													$ 45.0
Investee drew additional amount	45.0					45.0		45.0			45.0
Additional required investment	1.2					1.2		1.2
Payments to option to acquire			$ 1.8
Payments for option to acquire investment			$ 4.0
Investment in preferred equity securities	44.6					44.6		44.6			42.8
Investment option to acquire	24.9					24.9		24.9			20.9
Maximum additional option to acquire investment	2.6					2.6		2.6
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company December 2021 Investment
Variable Interest Entity [Line Items]
Maximum secured promissory note											40.0
Payments to option to acquire		$ 15.0
Payments for option to acquire investment		$ 10.0
Investment in preferred equity securities	35.0					35.0		35.0			20.0
Investment option to acquire	40.0					40.0		40.0			30.0
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company February 2019 Investment
Variable Interest Entity [Line Items]
Maximum secured promissory note	30.0					30.0		30.0				$ 47.5
Investee drew additional amount	77.5					77.5		77.5			47.5
Investment option to acquire	35.0					35.0		35.0			$ 35.0			$ 35.0
Option to extend warrant right period, consideration						16.5
Variable Interest Entity, Not Primary Beneficiary | Medical Device Company June 2025 Investment
Variable Interest Entity [Line Items]
Investment in preferred equity securities	$ 30.0					$ 30.0		$ 30.0