BUSINESS SEGMENT INFORMATION (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Summary of Segment Reporting Information by Segment

The following table is a summary of segment information for the three months ended March 31, 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 March 31,
	2024		2023
Net revenues:
DIS business	$	2,298	$	2,259
All other operating segments	68		72
Total net revenues	$	2,366	$	2,331
Operating earnings (loss):
DIS business	$	373	$	374
All other operating segments	9		8
General corporate activities	(82)		(77)
Total operating income	300		305
Non-operating expense, net	(34)		(28)
Income before income taxes and equity in earnings of equity method investees	266		277
Income tax expense	(66)		(65)
Equity in earnings of equity method investees, net of taxes	8		5
Net income	208		217
Less: Net income attributable to noncontrolling interests	14		15
Net income attributable to Quest Diagnostics	$	194	$	202