SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)					3 Months Ended			24 Months Ended		40 Months Ended
	Nov. 01, 2022 USD ($)	Jan. 20, 2022 USD ($) loan shares	Nov. 05, 2019 USD ($)	Feb. 01, 2018 USD ($) shares	Mar. 31, 2023 USD ($) incentivePlan jointVenture security $ / shares	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Oct. 31, 2025 USD ($)	Mar. 31, 2022 USD ($)	Oct. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 01, 2022 USD ($)	Jun. 10, 2021 shares	Apr. 15, 2021 shares	Jul. 01, 2020 USD ($)	Dec. 21, 2019 shares	Jun. 30, 2019 USD ($) agreement	Jan. 01, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Contracts receivable, factoring receivable					$ 15,400,000						$ 15,400,000
Deferred financing costs, net of accumulated amortization					2,100,000						2,300,000
Goodwill					687,085,000						677,665,000
Intangible asset amortization expense					3,000,000	$ 2,100,000
Income tax expense (benefit)					$ 1,135,000	1,496,000	$ 1,500,000
Effective tax rate					(8.60%)		15.20%
Number of plans | incentivePlan					1
Number of shares authorized (in shares) | shares													16,500,000
Amount of loss recognized in income on derivative (current period ineffective portion)					$ 327,922,000						332,995,000
Share price (in dollars per share) | $ / shares					$ 25.03
Credit facilities outstanding					$ 0						0
Number of securities without readily determinable fair value | security					3
Number of unconsolidated joint ventures | jointVenture					13
Management service fees					$ 4,200,000	$ 5,500,000
Medic Vision
Property, Plant and Equipment [Line Items]
Total net assets					$ 1,200,000
Ownership percentage					14.21%
Turner Imaging Systems
Property, Plant and Equipment [Line Items]
Number of shares purchased (in shares) | shares				2,100,000
Payments to acquire equity method investments				$ 2,000,000
Preferred stock issued upon conversion (in shares) | shares																80,000
Turner Imaging Systems | Promissory Note
Property, Plant and Equipment [Line Items]
Short-term debt																		$ 100,000
WhiteRabbit.ai Inc.
Property, Plant and Equipment [Line Items]
Payments to acquire equity method investments			$ 1,000,000
Payments to fund loan to related parties			$ 2,500,000
Revolving Credit Facility | Barclays
Property, Plant and Equipment [Line Items]
Deferred financing costs, net of accumulated amortization					$ 2,100,000
Revolving Credit Facility | First Lien Credit Agreement | Barclays | Line of Credit
Property, Plant and Equipment [Line Items]
Credit facilities outstanding					0						0
Aidence
Property, Plant and Equipment [Line Items]
Range of outcomes (upto)		$ 10,000,000
Number of identified milestones | loan		2,000
Milestone contingent consideration					11,316,000						11,158,000
Percent of FDA approval and payout, milestone one		80.00%
Percent of FDA approval and payout, milestone two		70.00%
Aidence | Contingent Milestone Consideration
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					7,300,000
Aidence | Cash Holdback
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					4,000,000
Quantib
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					4,411,000						3,709,000
Contingent consideration, liability, period		18 months
Additional number of shares issued (in shares) | shares		113,303
Fair value of additional shares issued after execution		$ 3,000,000
Quantib | Contingent Milestone Consideration
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					2,800,000
Quantib | Cash Holdback
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					1,600,000
Montclair
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					1,200,000						1,200,000	$ 1,200,000
Heart and Lung Limited
Property, Plant and Equipment [Line Items]
Milestone contingent consideration					13,130,000						$ 11,656,000
Contingent consideration, liability, period	24 months
Business acquisition, percentage of voting interests acquired	75.00%
Heart and Lung Limited | Contingent Milestone Consideration
Property, Plant and Equipment [Line Items]
Milestone contingent consideration	$ 10,200,000				$ 13,100,000
Heart and Lung Limited | Cash Holdback
Property, Plant and Equipment [Line Items]
Milestone contingent consideration	$ 600,000
Forecast
Property, Plant and Equipment [Line Items]
Monthly amortization of deferred hedge gains								$ 300,000		$ 400,000
Accumulated Other Comprehensive Loss, net of taxes
Property, Plant and Equipment [Line Items]
Amount of loss recognized in income on derivative (current period ineffective portion)															$ 24,400,000
2019 SWAPS
Property, Plant and Equipment [Line Items]
Number of forward interest rate cap agreements | agreement																	4
Notional amounts																	$ 500,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts
Property, Plant and Equipment [Line Items]
Notional amounts																	$ 100,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR)
Property, Plant and Equipment [Line Items]
Basis spread on variable rate																	1.96%
2019 SWAPS | October 2023
Property, Plant and Equipment [Line Items]
Number of forward interest rate cap agreements | agreement																	2
Notional amounts																	$ 50,000,000
2019 SWAPS | October 2025
Property, Plant and Equipment [Line Items]
Number of forward interest rate cap agreements | agreement																	2
Notional amounts																	$ 200,000,000
2019 SWAPS-1 | 2019 Swaps - Interest Rate Contracts
Property, Plant and Equipment [Line Items]
Notional amounts																	$ 400,000,000
2019 SWAPS-1 | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR)
Property, Plant and Equipment [Line Items]
Basis spread on variable rate																	2.05%
Restated Plan
Property, Plant and Equipment [Line Items]
Number of shares authorized (in shares) | shares														16,500,000
Management Service Contracts
Property, Plant and Equipment [Line Items]
Useful life					25 years
Minimum
Property, Plant and Equipment [Line Items]
Share-based payment award, award vesting period					3 years
Share-based payment award, expiration period					5 years
Minimum | Dignity Health | Joint Venture | Glendale Advanced Imaging
Property, Plant and Equipment [Line Items]
Variable interest entity, ownership percentage					35.00%
Minimum | Amounts Returned to Property and Equipment
Property, Plant and Equipment [Line Items]
PPE estimated useful lives					3 years
Minimum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
PPE estimated useful lives					3 years
Maximum
Property, Plant and Equipment [Line Items]
Share-based payment award, award vesting period					5 years
Share-based payment award, expiration period					10 years
Maximum | Dignity Health | Joint Venture | Glendale Advanced Imaging
Property, Plant and Equipment [Line Items]
Variable interest entity, ownership percentage					55.00%
Maximum | Amounts Returned to Property and Equipment
Property, Plant and Equipment [Line Items]
PPE estimated useful lives					15 years
Maximum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
PPE estimated useful lives					15 years
COVID-19 Pandemic
Property, Plant and Equipment [Line Items]
Advance medicare payments									$ 39,600,000
Repayment of advance medicare payments					$ 38,600,000