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BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of net revenues from the DIS business |  |  |  |  |  |  |  |  | 90.00% | 90.00% | 90.00%
Total net revenues | $ 1,861 | $ 1,885 | $ 1,906 | $ 1,863 | $ 1,849 | $ 1,880 | $ 1,925 | $ 1,839 | $ 7,515 | $ 7,493 | $ 7,435
Total operating income |  |  |  |  |  |  |  |  | 1,277 | 1,399 | 983
Non-operating expenses, net |  |  |  |  |  |  |  |  | (191) | (296) | (160)
Income from continuing operations before income taxes and equity in earnings of equity method investees |  |  |  |  |  |  |  |  | 1,086 | 1,103 | 823
Income tax expense |  |  |  |  |  |  |  |  | (429) | (373) | (262)
Equity in earnings of equity method investees, net of taxes |  |  |  |  |  |  |  |  | 39 | 23 | 26
Income from continuing operations | 167 | 205 | 209 | 115 | 200 | 354 | 129 | 70 | 696 | 753 | 587
Income from discontinued operations, net of taxes |  |  |  |  |  |  |  |  | 0 | 0 | 5
Net income | 167 | 205 | 209 | 115 | 200 | 354 | 129 | 70 | 696 | 753 | 592
Less: net income attributable to noncontrolling interests | 12 | 13 | 14 | 12 | 12 | 12 | 11 | 9 | 51 | 44 | 36
Net income attributable to Quest Diagnostics | $ 155 | $ 192 | $ 195 | $ 103 | $ 188 | $ 342 | $ 118 | $ 61 | 645 | 709 | 556
Depreciation and amortization |  |  |  |  |  |  |  |  | 249 | 304 | 314
Total capital expenditures |  |  |  |  |  |  |  |  | 293 | 263 | 308
Routine clinical testing services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 4,179 | 4,078 | 4,066
Gene-based and esoteric (including advanced diagnostics) testing services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 2,335 | 2,256 | 2,158
Anatomic pathology testing services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 624 | 631 | 649
All other services [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 377 | 528 | 562
DIS business [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 7,138 | 6,965 | 6,873
Total operating income |  |  |  |  |  |  |  |  | 1,244 | 1,118 | 1,068
Depreciation and amortization |  |  |  |  |  |  |  |  | 170 | 212 | 206
Total capital expenditures |  |  |  |  |  |  |  |  | 264 | 243 | 283
All other operating segments [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total net revenues |  |  |  |  |  |  |  |  | 377 | 528 | 562
Total operating income |  |  |  |  |  |  |  |  | 64 | 110 | 94
Depreciation and amortization |  |  |  |  |  |  |  |  | 6 | 10 | 13
Total capital expenditures |  |  |  |  |  |  |  |  | 21 | 16 | 17
General corporate income (expenses), Net [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total operating income |  |  |  |  |  |  |  |  | (31) | 171 | (179)
Depreciation and amortization |  |  |  |  |  |  |  |  | 73 | 82 | 95
Total capital expenditures |  |  |  |  |  |  |  |  | $ 8 | $ 4 | $ 8

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