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BUSINESS SEGMENT INFORMATION (Tables) | 9 Months Ended
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Sep. 30, 2023
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, 2023 and 2022. 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 2022 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,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net revenues: |  |  |  |  |  |  |
DIS business | $ | 2,228 |  |  | $ | 2,419 |  |  | $ | 6,755 |  |  | $ | 7,344 |
All other operating segments | 67 |  |  | 67 |  |  | 209 |  |  | 206 |
Total net revenues | $ | 2,295 |  |  | $ | 2,486 |  |  | $ | 6,964 |  |  | $ | 7,550 |
Operating earnings (loss): |  |  |  |  |  |  |
DIS business | $ | 392 |  |  | $ | 441 |  |  | $ | 1,176 |  |  | $ | 1,445 |
All other operating segments | 8 |  |  | 3 |  |  | 26 |  |  | 16 |
General corporate activities | (58) |  |  | (52) |  |  | (207) |  |  | (168) |
Total operating income | 342 |  |  | 392 |  |  | 995 |  |  | 1,293 |
Non-operating expense, net | (43) |  |  | (41) |  |  | (102) |  |  | (167) |
Income before income taxes and equity in earnings of equity method investees | 299 |  |  | 351 |  |  | 893 |  |  | 1,126 |
Income tax expense | (68) |  |  | (81) |  |  | (208) |  |  | (268) |
Equity in earnings of equity method investees, net of taxes | 6 |  |  | 6 |  |  | 18 |  |  | 41 |
Net income | 237 |  |  | 276 |  |  | 703 |  |  | 899 |
Less: Net income attributable to noncontrolling interests | 12 |  |  | 20 |  |  | 41 |  |  | 54 |
Net income attributable to Quest Diagnostics | $ | 225 |  |  | $ | 256 |  |  | $ | 662 |  |  | $ | 845 |
Schedule of Revenues by Major Service | by major service for the three and nine months ended September 30, 2023 and 2022 were as follows:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Routine clinical testing and other services | 51 | % |  | 45 | % |  | 50 | % |  | 43 | %
COVID-19 testing services | 1 |  |  | 13 |  |  | 3 |  |  | 17 |
Gene-based and esoteric (including advanced diagnostics) testing services | 39 |  |  | 33 |  |  | 38 |  |  | 31 |
Anatomic pathology testing services | 6 |  |  | 6 |  |  | 6 |  |  | 6 |
All other | 3 |  |  | 3 |  |  | 3 |  |  | 3 |
Net revenues | 100 | % |  | 100 | % |  | 100 | % |  | 100 | %

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