Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Goodwill	$ 6,772	$ 6,980	$ 7,033
Accumulated impairment losses	(2,814)	(2,814)	(2,814)
Goodwill	3,958	4,166	$ 4,219
Goodwill acquired as part of acquisitions during current year	23	11
Goodwill allocated to hospitals divested or held-for-sale	$ (231)	$ (64)