Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Goodwill [Line Items]
Impairments		$ 348	$ 370
Circle Health | Disposal Group, Held-for-sale, Not Discontinued Operations
Goodwill [Line Items]
Impairments	$ 251