Schedule II - Valuation Accounts and Reserves

12 Months Ended

Dec. 31, 2021

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
2021
Allowance for credit losses	$	28	$	4	$	1	(a)	$	31
2020
Allowance for credit losses	$	15	$	19	$	6	(a)	$	28
2019
Doubtful accounts and allowances	$	15	$	11	$	11	(a)	$	15

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