GOODWILL AND OTHER INTANGIBLE ASSETS, NET - Activity Related to Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 1,287,399	$ 1,287,399	$ 1,196,100
Additions		300	94,100
Adjustments related to acquisitions		200	(2,800)
Reclass between segments		0
Goodwill divestitures		(43,100)
Ending balance		1,244,679	1,287,399
Home Health [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss				$ 730,000
Goodwill [Roll Forward]
Beginning balance	203,800	203,800	118,200
Additions		300	85,600
Adjustments related to acquisitions		200	0
Reclass between segments		8,500
Goodwill divestitures		0
Ending balance		212,700	203,800
Hospice [Member]
Goodwill [Roll Forward]
Beginning balance	800,900	800,900	800,900
Additions		0	0
Adjustments related to acquisitions		0	0
Reclass between segments		0
Goodwill divestitures		0
Ending balance		800,900	800,900
Personal Care [Member]
Goodwill [Roll Forward]
Beginning balance	43,100	43,100	43,100
Additions		0	0
Adjustments related to acquisitions		0	0
Reclass between segments		0
Goodwill divestitures	43,100	(43,100)
Ending balance		0	43,100
High Acuity Care [Member]
Goodwill [Roll Forward]
Beginning balance	$ 239,600	239,600	233,900
Additions		0	8,500
Adjustments related to acquisitions		0	(2,800)
Reclass between segments		(8,500)
Goodwill divestitures		0
Ending balance		$ 231,100	$ 239,600