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BUSINESS SEGMENT INFORMATION
 9 Months Ended
Sep. 30, 2015
Segment Reporting [Abstract]  
BUSINESS SEGMENT INFORMATION
BUSINESS SEGMENT INFORMATION
    
The Company's DIS business provides insights through clinical testing and related services to patients, physicians, hospitals, ACOs, IDNs, health plans, employers and others. The Company is the world's leading provider of diagnostic information services, including routine clinical testing, gene-based and esoteric testing, anatomic pathology services and drugs-of-abuse testing, as well as related services and insights. The DIS business accounted for greater than 90% of net revenues in 2015 and 2014.

All other operating segments include the Company's DS businesses, which consists of its risk assessment services, clinical trials testing, diagnostic products and healthcare information technology businesses (see Note 6 regarding the contribution of the clinical trials testing business to a newly formed joint venture effective July 1, 2015 and non-core assets held for sale). The Company's DS businesses offer a variety of solutions for life insurers, healthcare providers and others. The Company provides risk assessment services, testing for clinical trials, robust information technology solutions and diagnostic products.

During 2015, the Company acquired MemorialCare, which is included in the Company's DIS business (see Note 5). During 2014, the Company acquired Solstas, Summit Health and Steward, which are included in the Company's DIS business.
    
At September 30, 2015, substantially all of the Company’s services are provided within the United States, and substantially all of the Company’s assets are located within the United States.

The following table is a summary of segment information for the three and nine months ended September 30, 2015 and 2014. Segment asset information is not presented since it is not used by the chief operating decision maker 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 or impairment of intangibles assets, other operating income and expenses net of certain general corporate activity costs that are allocated to the DIS and DS businesses, and the third quarter of 2015 pre-tax gain on contribution of business to joint venture (see Note 6). The accounting policies of the segments are the same as those of the Company as set forth in Note 2 to the consolidated financial statements contained in the Company’s 2014 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,
 
2015
 
2014
 
2015
 
2014
Net revenues:
 

 
 

 
 

 
 

DIS business
$
1,764

 
$
1,765

 
$
5,227

 
$
5,141

All other operating segments
116

 
139

 
417

 
411

 
 
 
 
 
 
 
 
Total net revenues
$
1,880

 
$
1,904

 
$
5,644

 
$
5,552

 
 
 
 
 
 
 
 
Operating earnings (loss):
 

 
 

 
 

 
 

DIS business
$
294

 
$
281

 
$
838

 
$
805

All other operating segments
30

 
23

 
86

 
63

General corporate activities
307

 
(48
)
 
236

 
(142
)
 
 
 
 
 
 
 
 
Total operating income
631

 
256

 
1,160

 
726

Non-operating expenses, net
(39
)
 
(42
)
 
(263
)
 
(119
)
 
 
 
 
 
 
 
 
Income before income taxes and equity in earnings of equity method investees
592

 
214

 
897

 
607

Income tax expense
(239
)
 
(82
)
 
(359
)
 
(234
)
Equity in earnings of equity method investees, net of taxes
1

 
7

 
15

 
19

 
 
 
 
 
 
 
 
Net income
354

 
139

 
553

 
392

Less: Net income attributable to noncontrolling interests
12

 
10

 
32

 
26

 
 
 
 
 
 
 
 
Net income attributable to Quest Diagnostics
$
342

 
$
129

 
$
521

 
$
366