GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Other Intangible Assets Included in Other Long-Term Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Other intangible assets:
Weighted Average Life (in years)	8 years 6 months
Total other intangible assets, Cost	$ 2,040	$ 2,436
Amortizable intangible assets, Accumulated Amortization	912	993
Total other intangible assets, Net	1,128	1,443
Certificates of need
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	790	910
Medicare licenses
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 262	270
Customer contracts/relationships
Other intangible assets:
Weighted Average Life (in years)	8 years 7 months 6 days
Amortizable intangible assets, Cost	$ 732	965
Amortizable intangible assets, Accumulated Amortization	692	759
Amortizable intangible assets, Net	$ 40	206
Trade names and technology
Other intangible assets:
Weighted Average Life (in years)	6 years 1 month 6 days
Amortizable intangible assets, Cost	$ 104	139
Amortizable intangible assets, Accumulated Amortization	97	119
Amortizable intangible assets, Net	$ 7	20
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	65	64
Amortizable intangible assets, Net	$ 2	3
Noncompetes and other
Other intangible assets:
Weighted Average Life (in years)	8 years 4 months 24 days
Amortizable intangible assets, Cost	$ 85	85
Amortizable intangible assets, Accumulated Amortization	58	51
Amortizable intangible assets, Net	$ 27	$ 34