ACQUISITIONS - Preliminary Fair Value on Date of Acquisition (Details) - USD ($) $ in Millions	Dec. 31, 2021	Aug. 17, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]
Goodwill	$ 11,092		$ 4,447	$ 3,928
Kindred at Home
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]
Cash and cash equivalents		$ 278
Receivables		381
Other current assets		61
Property and equipment		74
Goodwill		5,771
Other intangible assets		2,312
Other long-term assets		172
Total assets acquired		9,049
Current liabilities		410
Long term debt		2,078
Other long-term liabilities		369
Total liabilities assumed		2,857
Noncontrolling interests		22
Net assets acquired		$ 6,170