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BUSINESS SEGMENT INFORMATION (Tables) | 3 Months Ended
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Mar. 31, 2025
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, 2025 and 2024. Segment asset information is not presented since it is not received by the CODM at the operating segment level. The CODM regularly reviews certain consolidated expenses, including employee compensation costs. "Other segment items" principally consist of costs for obtaining, transporting and testing specimens, facility costs used for the delivery of the Company's services, costs associated with the Company's sales and marketing efforts, and costs related to billing operations. Operating income (loss) of each segment represents net revenues less directly identifiable expenses. General corporate activities included in the table below are comprised of general management and administrative corporate expenses, amortization and impairment of intangibles 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 2024 Annual Report on Form 10-K and Note 2 to the interim unaudited consolidated financial statements.
| Three Months Ended |
| March 31, 2025 |
| DIS |  |  |  | Total |
Net revenues | $ | 2,589 |  |  |  |  | $ | 2,589 |  |
DS revenues |  |  |  |  | 63 |  |
Total net revenues |  |  |  |  | $ | 2,652 |  |
Less: Other segment items | 2,175 |  |  |  |  |  |
Segment operating income | $ | 414 |  |  |  |  | $ | 414 |  |
DS operating income |  |  |  |  | 8 |  |
General corporate activities |  |  |  |  | (76) |  |
Total operating income |  |  |  |  | 346 |  |
Non-operating expense, net |  |  |  |  | (70) |  |
Income before income taxes and equity in earnings of equity method investees |  |  |  |  | 276 |  |
Income tax expense |  |  |  |  | (59) |  |
Equity in earnings of equity method investees, net of taxes |  |  |  |  | 18 |  |
Net income |  |  |  |  | 235 |
Less: Net income attributable to noncontrolling interests |  |  |  |  | 15 |
Net income attributable to Quest Diagnostics |  |  |  |  | $ | 220 |  |
| Three Months Ended |
| March 31, 2024 |
| DIS |  |  |  | Total |
Net revenues | $ | 2,298 |  |  |  |  | $ | 2,298 |  |
DS revenues |  |  |  |  | 68 |  |
Total net revenues |  |  |  |  | $ | 2,366 |  |
Less: Other segment items | 1,925 |  |  |  |  |  |
Segment operating income | $ | 373 |  |  |  |  | $ | 373 |  |
DS operating income |  |  |  |  | 9 |  |
General corporate activities |  |  |  |  | (82) |  |
Total operating income |  |  |  |  | 300 |  |
Non-operating expense, net |  |  |  |  | (34) |  |
Income before income taxes and equity in earnings of equity method investees |  |  |  |  | 266 |  |
Income tax expense |  |  |  |  | (66) |  |
Equity in earnings of equity method investees, net of taxes |  |  |  |  | 8 |  |
Net income |  |  |  |  | 208 |
Less: Net income attributable to noncontrolling interests |  |  |  |  | 14 |
Net income attributable to Quest Diagnostics |  |  |  |  | $ | 194 |  |
Depreciation and amortization expense for the three months ended March 31, 2025 and 2024 was as follows:
| Three Months Ended March 31,
| 2025 |  | 2024
DIS business | $ | 97 |  |  | $ | 84 |
All other operating segments | 4 |  |  | 3 |
General corporate | 39 |  |  | 29 |
Total depreciation and amortization | $ | 140 |  |  | $ | 116 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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