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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Schedule of Investments | Investments as of December 31, 2017 and 2016 consisted of the following:
| 2017 |  | 2016
Available-for-sale equity securities | $ | 2 |  |  | $ | 3 |
Trading equity securities | 58 |  |  | 51 |
Other investments | 9 |  |  | 6 |
Total | $ | 69 |  |  | $ | 60 |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles | Based on the Company's assessment of this ASU, the majority of the amounts that were historically classified as bad debt expense, primarily related to patient responsibility, will be considered an implicit price concession in determining net revenues. Accordingly, the Company will report uncollectible balances associated with patient responsibility as a reduction of the transaction price and therefore as a reduction in net revenues when historically these amounts were classified as bad debt expense within selling, general and administrative expenses. As a result of this change, the Company preliminarily estimates the following impact to its consolidated statements of operations for the years ended December 31, 2017 and 2016:
| Year Ended December 31, 2017 |  | Year Ended December 31, 2016
| As Reported |  | Adjustment for ASU on Revenue Recognition |  | As Adjusted |  | As Reported |  | Adjustment for ASU on Revenue Recognition |  | As Adjusted
Net revenues | $ | 7,709 |  |  | $ | (307 | ) |  | $ | 7,402 |  |  | $ | 7,515 |  |  | $ | (301 | ) |  | $ | 7,214 |
Selling, general and administrative expenses | $ | 1,750 |  |  | $ | (307 | ) |  | $ | 1,443 |  |  | $ | 1,681 |  |  | $ | (301 | ) |  | $ | 1,380 |
Net income attributable to Quest Diagnostics | $ | 772 |  |  | $ | — |  |  | $ | 772 |  |  | $ | 645 |  |  | $ | — |  |  | $ | 645 |

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- Definition Tabular disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01.(b)(6)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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