Amount of costs associated with malpractice claims and insurance premiums incurred during an accounting period, less insurance recoveries and returns of previously paid premiums.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 450
-Section 30
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 720
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Name:	us-gaap_MalpracticeLossContingencyClaimsIncurredNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE - Professional and General Liability Reserves (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Other Operating Expense, Net
Insurance coverage
Malpractice expense	$ 179	$ 144
Professional and General Liability Reserves
Insurance coverage
Self insurance reserve	$ 1,016		$ 978