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Quarterly Operating Results (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Data [Abstract] |
Quarterly Operating Results |
2017 (a) | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Total Year
| (b) |  | (c) |  | (d) |  | (e) |  |
Net revenues | $ | 1,899 |  |  | $ | 1,943 |  |  | $ | 1,931 |  |  | $ | 1,936 |  |  | $ | 7,709 |
Gross profit | 734 |  |  | 773 |  |  | 741 |  |  | 742 |  |  | 2,990 |
Net income | 175 |  |  | 207 |  |  | 175 |  |  | 267 |  |  | 824 |
Less: Net income attributable to noncontrolling interests | 11 |  |  | 14 |  |  | 14 |  |  | 13 |  |  | 52 |
Net income attributable to Quest Diagnostics | $ | 164 |  |  | $ | 193 |  |  | $ | 161 |  |  | $ | 254 |  |  | $ | 772 |
Earnings per share attributable to Quest Diagnostics' stockholders: |  |  |  |  |  |  |  |  |
Basic | $ | 1.19 |  |  | $ | 1.40 |  |  | $ | 1.18 |  |  | $ | 1.86 |  |  | $ | 5.63 |
Diluted | $ | 1.16 |  |  | $ | 1.37 |  |  | $ | 1.15 |  |  | $ | 1.82 |  |  | $ | 5.50 |
2016 (a) | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter |  | Total Year
| (f) |  | (g) |  | (h) |  | (i) |  |
Net revenues | $ | 1,863 |  |  | $ | 1,906 |  |  | $ | 1,885 |  |  | $ | 1,861 |  |  | $ | 7,515 |
Gross profit | 719 |  |  | 751 |  |  | 728 |  |  | 701 |  |  | 2,899 |
Net income | 115 |  |  | 209 |  |  | 205 |  |  | 167 |  |  | 696 |
Less: Net income attributable to noncontrolling interests | 12 |  |  | 14 |  |  | 13 |  |  | 12 |  |  | 51 |
Net income attributable to Quest Diagnostics | $ | 103 |  |  | $ | 195 |  |  | $ | 192 |  |  | $ | 155 |  |  | $ | 645 |
Earnings per share attributable to Quest Diagnostics' stockholders: |  |  |  |  |  |  |  |  |
Basic | $ | 0.72 |  |  | $ | 1.38 |  |  | $ | 1.37 |  |  | $ | 1.11 |  |  | $ | 4.58 |
Diluted | $ | 0.71 |  |  | $ | 1.37 |  |  | $ | 1.34 |  |  | $ | 1.09 |  |  | $ | 4.51 |
(a) | In May 2016, the Company completed the sale of Focus Diagnostics (see Note 6).
(b) | Included pre-tax charges of $18 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($10 million in cost of services and $8 million in selling, general and administrative expenses); and excess tax benefits associated with stock-based compensation arrangements of $16 million recorded in income tax expense.
(c) | Included pre-tax charges of $23 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($9 million in cost of services, $13 million in selling, general and administrative expenses, and $1 million in equity in earnings of equity method investees, net of taxes); pre-tax gain of $7 million related to the sale of an interest in an equity method investment (recorded in other income (expense), net); $2 million in costs incurred related to certain legal matters (recorded in selling, general and administrative expenses); and excess tax benefits associated with stock-based compensation arrangements of $13 million recorded in income tax expense.
(d) | Included pre-tax charges of $23 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($12 million in cost of services and $11 million in selling, general and administrative expenses); pre-tax charges of $9 million primarily associated with non-cash asset impairment charges and incremental costs incurred as a result of hurricanes ($3 million in cost of services, $1 million in selling, general and administrative expenses, and $5 million in other income (expense), net); and excess tax benefits associated with stock-based compensation arrangements of $7 million recorded in income tax expense.
(e) | Included pre-tax charges of $42 million, primarily associated with systems conversions, integration and workforce reductions incurred in connection with further restructuring and integrating the Company ($14 million in cost of services and $28 million in selling, general and administrative expenses); pre-tax charges of $6 million, primarily related to non-cash asset impairment charges and incremental costs incurred as a result of the hurricanes ($2 million in cost of services and $4 million in selling, general and administrative expenses); a provisional estimated income tax benefit of $106 million associated with the TCJA, including a deferred income tax benefit of $115 million primarily due to the remeasurement of net deferred tax liabilities and reserves at the new combined federal and state tax rate, partially offset by $9 million of current tax expense primarily due to the mandatory repatriation toll charge on undistributed foreign earnings and profits; and excess tax benefits associated with stock-based compensation arrangements of $1 million recorded in income tax expense.
(f) | Included pre-tax charges of $21 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($7 million in cost of services, $12 million in selling, general and administrative expenses and $2 million in equity in earnings of equity method investees, net of taxes); pre-tax charges of $1 million, representing non-cash asset impairment charges recorded in other operating expense (income), net; pre-tax charges of $2 million, primarily representing costs incurred related to certain legal matters recorded in selling, general and administrative expenses; pre-tax charges of $48 million on retirement of debt associated with the March 2016 cash tender offer recorded in other income (expense), net (see Note 13); pre-tax charges of $1 million representing non-cash asset impairment charges associated with an investment recorded in other income (expense), net; and excess tax benefits associated with stock-based compensation arrangements of $2 million recorded in income tax expense.
(g) | Included a pre-tax gain of $118 million associated with the sale of Focus Diagnostics; pre-tax charges of $19 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($10 million in cost of services, $8 million in selling, general and administrative expenses and $1 million in equity in earnings of equity method investees, net of taxes); pre-tax charges of $1 million, primarily representing costs incurred related to certain legal matters recorded in selling, general and administrative expenses; pre-tax charges of $6 million representing non-cash asset impairment charges associated with certain investments recorded in other income (expense), net; and excess tax benefits associated with stock-based compensation arrangements of $2 million recorded in income tax expense.
(h) | Included pre-tax charges of $18 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($8 million in cost of services and $10 million in selling, general and administrative expenses); pre-tax gain of $21 million, principally a result of a gain on escrow recovery associated with an acquisition recorded in other operating expense (income), net; and excess tax benefits associated with stock-based compensation arrangements of $3 million recorded in income tax expense.
(i) | Included pre-tax charges of $24 million, primarily associated with systems conversions and integration incurred in connection with further restructuring and integrating the Company ($15 million in cost of services, $7 million in selling, general and administrative expenses, $1 million in other operating expense (income), net and $1 million in equity in earnings of equity method investees, net of taxes); pre-tax charges of $6 million representing non-cash asset impairment charges recorded in other operating expense (income), net; and excess tax benefits associated with stock-based compensation arrangements of $2 million recorded in income tax expense.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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