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Schedule II - Valuation Accounts and Reserves

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION ACCOUNTS AND RESERVES

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

SCHEDULE II - VALUATION ACCOUNTS AND RESERVES

(in millions)

			Balance at Beginning of Year						Provision for Credit Losses						Net Deductions and Other						Balance at End of Year
2020
Allowance for credit losses			$	15					$	19					$	6		(a)			$	28
2019
Doubtful accounts and allowances			$	15					$	11					$	11		(a)			$	15
2018
Doubtful accounts and allowances			$	13					$	6					$	4		(a)			$	15

(a)Primarily represents the write-off of accounts receivable, net of recoveries.

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- Definition

The entire disclosure for valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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- References

No definition available.

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