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Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Goodwill [Roll Forward]
Goodwill	$ 6,354	$ 6,603
Accumulated impairment losses	(2,814)	(2,814)
Goodwill	3,540	$ 3,789
Goodwill acquired as part of acquisitions	2
Goodwill allocated to hospitals divested or held-for-sale (as applicable)	$ (251)

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Goodwill written off related to divested or disposal of assets held for sale.

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Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount, before accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Includes amount, before amortization expense and impairment loss, of goodwill for private company.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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