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BUSINESS SEGMENT INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2023
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information, by Segment | The following table is a summary of segment information for the years ended December 31, 2023, 2022 and 2021. 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 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.
| 2023 |  | 2022 |  | 2021
Net revenues: |  |  |  |  |
DIS business | $ | 8,976 |  |  | $ | 9,609 |  |  | $ | 10,494 |
All other operating segments | 276 |  |  | 274 |  |  | 294 |
Total net revenues | $ | 9,252 |  |  | $ | 9,883 |  |  | $ | 10,788 |
Operating earnings (loss): |  |  |  |  |
DIS business | $ | 1,547 |  |  | $ | 1,704 |  |  | $ | 2,646 |
All other operating segments | 34 |  |  | 20 |  |  | 29 |
General corporate activities | (319) |  |  | (296) |  |  | (294) |
Total operating income | 1,262 |  |  | 1,428 |  |  | 2,381 |
Non-operating (expense) income, net | (132) |  |  | (193) |  |  | 218 |
Income before income taxes and equity in earnings of equity method investees | 1,130 |  |  | 1,235 |  |  | 2,599 |
Income tax expense | (248) |  |  | (264) |  |  | (597) |
Equity in earnings of equity method investees, net of taxes | 26 |  |  | 44 |  |  | 78 |
Net income | 908 |  |  | 1,015 |  |  | 2,080 |
Less: Net income attributable to noncontrolling interests | 54 |  |  | 69 |  |  | 85 |
Net income attributable to Quest Diagnostics | $ | 854 |  |  | $ | 946 |  |  | $ | 1,995 |
Depreciation and amortization expense for the years ended December 31, 2023, 2022 and 2021 were as follows:
| 2023 |  | 2022 |  | 2021
DIS business | $ | 319 |  |  | $ | 305 |  |  | $ | 294 |
All other operating segments | 11 |  |  | 12 |  |  | 10 |
General corporate | 109 |  |  | 120 |  |  | 104 |
Total depreciation and amortization | $ | 439 |  |  | $ | 437 |  |  | $ | 408 |
Capital expenditures for the years ended December 31, 2023, 2022 and 2021 were as follows:
| 2023 |  | 2022 |  | 2021
DIS business | $ | 398 |  |  | $ | 384 |  |  | $ | 379 |
All other operating segments | 8 |  |  | 19 |  |  | 14 |
General corporate | 2 |  |  | 1 |  |  | 10 |
Total capital expenditures | $ | 408 |  |  | $ | 404 |  |  | $ | 403 |
Schedule of Percentage of Net Revenues by Customer Major Service | The approximate percentage of net revenues by major service for the years ended December 31, 2023, 2022 and 2021 was as follows:
| 2023 |  | 2022 |  | 2021
Routine clinical testing and other services | 51 | % |  | 44 | % |  | 40 | %
COVID-19 testing services | 2 |  |  | 15 |  |  | 26 |
Gene-based and esoteric (including advanced diagnostics) testing services | 38 |  |  | 32 |  |  | 26 |
Anatomic pathology testing services | 6 |  |  | 6 |  |  | 5 |
All other | 3 |  |  | 3 |  |  | 3 |
Net revenues | 100 | % |  | 100 | % |  | 100 | %
Schedule of Net Revenues by Customer Channel | The approximate percentage of net revenues by customer channel for the years ended December 31, 2023, 2022 and 2021 was as follows:
| 2023 |  | 2022 |  | 2021
Physician lab services | 66 | % |  | 68 | % |  | 69 | %
Hospital lab services | 21 |  |  | 18 |  |  | 17 |
Other DIS | 10 |  |  | 11 |  |  | 11 |
Total DIS revenues | 97 |  |  | 97 |  |  | 97 |
DS revenues | 3 |  |  | 3 |  |  | 3 |
Total net revenues | 100 | % |  | 100 | % |  | 100 | %

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