GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Assets Included in Other Long-Term Assets (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Other intangible assets:
Weighted average life (in years)	9 years 2 months 12 days
Total other intangible assets, cost	$ 2,436	$ 2,626
Amortizable intangible assets, accumulated amortization	993	933
Total other intangible assets, net	1,443	1,693
Certificates of need
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	910	1,092
Medicare licenses
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 270	288
Customer contracts/relationships
Other intangible assets:
Weighted average life (in years)	9 years 4 months 24 days
Amortizable intangible assets, cost	$ 965	956
Amortizable intangible assets, accumulated amortization	759	718
Amortizable intangible assets, net	$ 206	238
Trade names and technology
Other intangible assets:
Weighted average life (in years)	6 years 8 months 12 days
Amortizable intangible assets, cost	$ 139	139
Amortizable intangible assets, accumulated amortization	119	109
Amortizable intangible assets, net	$ 20	30
Provider contracts
Other intangible assets:
Weighted average life (in years)	11 years 10 months 24 days
Amortizable intangible assets, cost	$ 67	67
Amortizable intangible assets, accumulated amortization	64	62
Amortizable intangible assets, net	$ 3	5
Noncompetes and other
Other intangible assets:
Weighted average life (in years)	8 years 4 months 24 days
Amortizable intangible assets, cost	$ 85	84
Amortizable intangible assets, accumulated amortization	51	44
Amortizable intangible assets, net	$ 34	$ 40