Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Acquisitions and Divestitures - Acquisitions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Acquisitions and Divestitures [Line Items]
Acquisition and integration expenses related to prospective and closed acquisitions	$ 1	$ 1	$ 1	$ 3
Physician Practices Clinics and Other Ancillary Businesses
Acquisitions and Divestitures [Line Items]
Business acquisition, cost of acquired entity, purchase price			$ 1