BUSINESS SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Summary of Segment Reporting Information by Segment

The following table is a summary of segment information for the three and nine months ended September 30, 2024 and 2023. Segment asset information is not presented since it is not used by the CODM at the operating segment level. Operating earnings (loss) of each segment represents net revenues less directly identifiable expenses to arrive at operating income (loss) for the segment. General corporate activities included in the table below are comprised of general management and administrative corporate expenses, amortization and impairment of intangible assets and other operating income and expenses, net of certain general corporate activity costs that are allocated to the DIS and DS businesses. The accounting policies of the

segments are the same as those of the Company as set forth in Note 2 to the audited consolidated financial statements contained in the Company’s 2023 Annual Report on Form 10-K and Note 2 to the interim unaudited consolidated financial statements.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net revenues:
DIS business	$	2,427	$	2,228	$	7,058	$	6,755
All other operating segments	61		67		193		209
Total net revenues	$	2,488	$	2,295	$	7,251	$	6,964
Operating earnings (loss):
DIS business	$	407	$	392	$	1,200	$	1,176
All other operating segments	6		8		23		26
General corporate activities	(83)		(58)		(238)		(207)
Total operating income	330		342		985		995
Non-operating expense, net	(34)		(43)		(109)		(102)
Income before income taxes and equity in earnings of equity method investees	296		299		876		893
Income tax expense	(65)		(68)		(205)		(208)
Equity in earnings of equity method investees, net of taxes	6		6		14		18
Net income	237		237		685		703
Less: Net income attributable to noncontrolling interests	11		12		36		41
Net income attributable to Quest Diagnostics	$	226	$	225	$	649	$	662