10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2015

Commission file number 001-12215

Quest Diagnostics Incorporated

Three Giralda Farms

Madison, NJ 07940

(973) 520-2700

Delaware

(State of Incorporation)

16-1387862

(I.R.S. Employer Identification Number)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer x	Accelerated filer o
Non-accelerated filer o (Do not check if a smaller reporting company)	Smaller reporting company o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

As of July 23, 2015, there were outstanding 143,552,998 shares of the registrant’s common stock, $.01 par value.

PART I - FINANCIAL INFORMATION

		Page
Item 1. Financial Statements
	Index to unaudited consolidated financial statements filed as part of this report:
	Consolidated Statements of Operations for the Three and Six Months Ended June 30, 2015 and 2014	2
	Consolidated Statements of Comprehensive Income for the Three and Six Months Ended June 30, 2015 and 2014	3
	Consolidated Balance Sheets as of June 30, 2015 and December 31, 2014	4
	Consolidated Statements of Cash Flows for the Six Months Ended June 30, 2015 and 2014	5
	Consolidated Statements of Stockholders’ Equity for the Six Months Ended June 30, 2015 and 2014	6
	Notes to Consolidated Financial Statements	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations
	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3. Quantitative and Qualitative Disclosures About Market Risk
	See Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations”	36
Item 4. Controls and Procedures
	Controls and Procedures	36

1

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2015 AND 2014

(unaudited)

(in millions, except per share data)

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net revenues	$	1,925		$	1,902		$	3,764		$	3,648
Operating costs and expenses:
Cost of services	1,182			1,174			2,345			2,275
Selling, general and administrative	429			440			848			855
Amortization of intangible assets	20			25			41			47
Other operating (income) expense, net	(7		)	1			1			1
Total operating costs and expenses	1,624			1,640			3,235			3,178
Operating income	301			262			529			470
Other income (expense):
Interest expense, net	(37		)	(42		)	(82		)	(81		)
Equity in earnings of equity method investees	7			6			14			12
Other (expense) income, net	(64		)	3			(142		)	4
Total non-operating expenses, net	(94		)	(33		)	(210		)	(65		)
Income before income taxes	207			229			319			405
Income tax expense	78			87			120			152
Net income	129			142			199			253
Less: Net income attributable to noncontrolling interests	11			9			20			16
Net income attributable to Quest Diagnostics	$	118		$	133		$	179		$	237
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	0.82		$	0.92		$	1.24		$	1.64
Diluted	$	0.81		$	0.92		$	1.23		$	1.63
Weighted average common shares outstanding:
Basic	144			144			144			144
Diluted	145			145			145			145
Dividends per common share	$	0.38		$	0.33		$	0.76		$	0.66

The accompanying notes are an integral part of these statements.

2

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2015 AND 2014

(unaudited)

(in millions)

	Three Months Ended June 30,					Six Months Ended June 30,
	2015		2014			2015			2014
Net income	$	129	$	142		$	199		$	253
Other comprehensive income (loss):
Currency translation	4		3			(2		)	2
Market valuation, net of tax	—		3			2			3
Net deferred loss on cash flow hedges, net of tax	1		(3		)	2			(5		)
Other comprehensive income	5		3			2			—
Comprehensive income	134		145			201			253
Less: Comprehensive income attributable to noncontrolling interests	11		9			20			16
Comprehensive income attributable to Quest Diagnostics	$	123	$	136		$	181		$	237

The accompanying notes are an integral part of these statements.

3

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

JUNE 30, 2015 AND DECEMBER 31, 2014

(unaudited)

(in millions, except per share data)

	June 30, 2015			December 31, 2014
Assets
Current assets:
Cash and cash equivalents	$	150		$	192
Accounts receivable, net of allowance for doubtful accounts of $265 and $250 at June 30, 2015 and December 31, 2014, respectively	937			932
Inventories	109			110
Deferred income taxes	161			169
Prepaid expenses and other current assets	173			200
Total current assets	1,530			1,603
Property, plant and equipment, net	906			933
Goodwill	5,987			6,032
Intangible assets, net	1,022			1,071
Other assets	219			218
Non-current assets held for sale	56			—
Total assets	$	9,720		$	9,857
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable and accrued expenses	$	1,074		$	1,191
Current portion of long-term debt	168			518
Total current liabilities	1,242			1,709
Long-term debt	3,568			3,224
Other liabilities	566			594
Stockholders’ equity:
Quest Diagnostics stockholders’ equity:
Common stock, par value $0.01 per share; 600 shares authorized at both June 30, 2015 and December 31, 2014; 216 shares and 215 shares issued at June 30, 2015 and December 31, 2014, respectively	2			2
Additional paid-in capital	2,444			2,418
Retained earnings	5,793			5,723
Accumulated other comprehensive loss	(25		)	(27		)
Treasury stock, at cost; 72 shares and 71 shares at June 30, 2015 and December 31, 2014, respectively	(3,900		)	(3,815		)
Total Quest Diagnostics stockholders’ equity	4,314			4,301
Noncontrolling interests	30			29
Total stockholders’ equity	4,344			4,330
Total liabilities and stockholders’ equity	$	9,720		$	9,857

The accompanying notes are an integral part of these statements.

4

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

FOR THE SIX MONTHS ENDED JUNE 30, 2015 AND 2014

(unaudited)

(in millions)

	Six Months Ended June 30,
	2015			2014
Cash flows from operating activities:
Net income	$	199		$	253
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	153			156
Provision for doubtful accounts	158			148
Deferred income tax benefit	(5		)	(26		)
Stock-based compensation expense	27			25
Excess tax benefits from stock-based compensation arrangements	(3		)	—
Other, net	(5		)	(2		)
Changes in operating assets and liabilities:
Accounts receivable	(163		)	(191		)
Accounts payable and accrued expenses	(49		)	(39		)
Income taxes payable	17			44
Other assets and liabilities, net	(2		)	(4		)
Net cash provided by operating activities	327			364
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(6		)	(723		)
Capital expenditures	(117		)	(117		)
Increase in investments and other assets	—			(1		)
Net cash used in investing activities	(123		)	(841		)
Cash flows from financing activities:
Proceeds from borrowings	1,829			1,738
Repayments of debt	(1,821		)	(1,159		)
Purchases of treasury stock	(149		)	(57		)
Exercise of stock options	55			30
Excess tax benefits from stock-based compensation arrangements	3			—
Dividends paid	(103		)	(91		)
Distributions to noncontrolling interests	(19		)	(14		)
Other financing activities, net	(41		)	(13		)
Net cash (used in) provided by financing activities	(246		)	434
Net change in cash and cash equivalents	(42		)	(43		)
Cash and cash equivalents, beginning of period	192			187
Cash and cash equivalents, end of period	$	150		$	144

The accompanying notes are an integral part of these statements.

5

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

FOR THE SIX MONTHS ENDED JUNE 30, 2015 AND 2014

(unaudited)

(in millions)

			Quest Diagnostics Stockholders’ Equity
	Shares of Common Stock Outstanding		Common Stock		Additional Paid-In Capital			Retained Earnings			Accumulated Other Compre- hensive Loss			Treasury Stock, at Cost			Non- controlling Interests			Total Stock- holders’ Equity
Balance, December 31, 2014	144		$	2	$	2,418		$	5,723		$	(27	)	$	(3,815	)	$	29		$	4,330
Net income								179									20			199
Other comprehensive income, net of tax											2									2
Dividends declared								(109		)										(109		)
Distributions to noncontrolling interests																	(19		)	(19		)
Issuance of common stock under benefit plans	1				4									7						11
Stock-based compensation expense					25									2						27
Exercise of stock options	1													55						55
Shares to cover employee payroll tax withholdings on stock issued under benefit plans					(6		)													(6		)
Tax benefits associated with stock-based compensation plans					3															3
Purchases of treasury stock	(2	)												(149		)				(149		)
Balance, June 30, 2015	144		$	2	$	2,444		$	5,793		$	(25	)	$	(3,900	)	$	30		$	4,344
			Quest Diagnostics Stockholders’ Equity
	Shares of Common Stock Outstanding		Common Stock		Additional Paid-In Capital			Retained Earnings			Accumulated Other Compre- hensive Loss			Treasury Stock, at Cost			Non- controlling Interests			Total Stock- holders’ Equity
Balance, December 31, 2013	144		$	2	$	2,379		$	5,358		$	(8	)	$	(3,783	)	$	25		$	3,973
Net income								237									16			253
Other comprehensive income, net of tax											—									—
Dividends declared								(95		)										(95		)
Distributions to noncontrolling interests																	(14		)	(14		)
Issuance of common stock under benefit plans	1													9						9
Stock-based compensation expense					23									2						25
Exercise of stock options					(3		)							33						30
Shares to cover employee payroll tax withholdings on stock issued under benefit plans					(5		)													(5		)
Purchases of treasury stock	(1	)												(57		)				(57		)
Balance, June 30, 2014	144		$	2	$	2,394		$	5,500		$	(8	)	$	(3,796	)	$	27		$	4,119

The accompanying notes are an integral part of these statements.

6

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

(dollars in millions unless otherwise indicated)

1.    DESCRIPTION OF BUSINESS

Background

Quest Diagnostics Incorporated and its subsidiaries ("Quest Diagnostics" or the "Company") empower people to take action to improve health outcomes.  The Company uses its extensive database of clinical lab results to derive diagnostic insights that reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management.  The Company's diagnostic information services business ("DIS") provides insights through clinical testing and related services to patients, physicians, hospitals, accountable care organizations ("ACOs"), integrated delivery networks ("IDNs"), health plans, employers and others. The Company offers the broadest access in the United States to diagnostic information services through its nationwide network of laboratories, Company-owned patient service centers and phlebotomists in physician offices. 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 Company provides interpretive consultation through the organization, with one of the largest medical and scientific staffs in the industry and hundreds of M.D.s and Ph.D.s, many of whom are recognized leaders in their fields. The Company's Diagnostic Solutions ("DS") businesses offer a variety of solutions for life insurers, healthcare providers and others. The Company is the leading provider of risk assessment services for the life insurance industry as well as a leading provider of central laboratory testing for clinical trials (see Note 6 regarding assets held for sale). The Company's diagnostics products business manufactures and markets diagnostic products. In addition, the Company offers healthcare organizations, clinicians and patients robust information technology solutions.

2.    SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The interim unaudited consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of results of operations, comprehensive income, financial condition, cash flows and stockholders' equity for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s 2014 Annual Report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements as of December 31, 2014, but does not include all the disclosures required by accounting principles generally accepted in the United States (“GAAP”).

As a result of the early adoption of the accounting standard update (“ASU”) associated with classification of debt issuance costs, certain reclassifications have been made to the prior period financial statements to conform with the current period presentation. For further details regarding the impact of the ASU, see Adoption of New Accounting Standards.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Earnings Per Share

The Company's unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the

7

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities.

Adoption of New Accounting Standards

On January 1, 2015, the Company adopted a new accounting standard issued by the Financial Accounting Standards Board ("FASB") related to the presentation and reporting of discontinued operations, including the disposals of components of an entity. The standard changes the criteria for reporting discontinued operations and requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations. The new standard also requires disclosure of the pre-tax income attributable to a disposal of a significant part of an organization that does not qualify for discontinued operations reporting. The impact of this standard on the Company’s results of operations, financial position, cash flows and disclosures will be assessed as part of any future disposal activity.

In April 2015, the FASB issued an ASU which requires that debt issuance costs be presented in the balance sheet as a direct reduction to the carrying amount of the associated debt liability, consistent with debt discounts. The Company adopted this standard in the second quarter of 2015, which has been applied retrospectively. Adoption of this standard has resulted in the reclassification of $20 million of unamortized debt issuance costs from other assets to a reduction of long-term debt on the consolidated balance sheet at December 31, 2014.    

New Accounting Pronouncements

In May 2014, the FASB issued an ASU on revenue recognition. This ASU outlines a single comprehensive model to use in accounting for revenue arising from contracts with customers. This standard supersedes existing revenue recognition requirements and eliminates most industry-specific guidance from GAAP. The core principle of the revenue recognition standard is to require an entity to recognize as revenue the amount that reflects the consideration to which it expects to be entitled in exchange for goods or services as it transfers control to its customers. The standard requires additional disclosures including those that are qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In July 2015, the FASB voted to defer the effective date of this ASU to the first quarter of 2018, with early adoption permitted beginning in the first quarter of 2017. The ASU can be applied using a full retrospective method or a modified retrospective method of adoption. The Company is currently assessing the impact of the adoption of this ASU on the Company’s results of operations, financial position and cash flows.

In February 2015, the FASB issued an ASU which makes targeted amendments to the current consolidation guidance for variable interest entities and limited partnerships and similar entities. The ASU is effective for the Company in the first quarter of 2016 with the option of using a full retrospective or a modified retrospective method. The Company does not expect the adoption of this standard to have a material impact on its results of operations, financial position, and cash flows.

In April 2015, the FASB issued an ASU which provides guidance in determining whether a cloud computing arrangement includes a software license.  If it is determined that a cloud computing arrangement does include a software license, the software element of the arrangement should be accounted for consistent with the acquisition of other software licenses.  If the arrangement does not include a software license, it should be accounted for as a service contract.  The ASU is effective for the Company in the first quarter of 2016 and can be applied prospectively to all arrangements entered into or materially modified after the effective date or retrospectively.  The Company does not expect the adoption of this ASU to have a material impact on its results of operations, financial position and cash flows.

8

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

3.    EARNINGS PER SHARE

The computation of basic and diluted earnings per common share was as follows (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Amounts attributable to Quest Diagnostics’ stockholders:
Net income attributable to Quest Diagnostics	$	118	$	133	$	179	$	237
Less: Earnings allocated to participating securities	1		—		1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	117	$	133	$	178	$	236
Weighted average common shares outstanding – basic	144		144		144		144
Effect of dilutive securities:
Stock options and performance share units	1		1		1		1
Weighted average common shares outstanding – diluted	145		145		145		145
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	0.82	$	0.92	$	1.24	$	1.64
Diluted	$	0.81	$	0.92	$	1.23	$	1.63

The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect (shares in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014
Stock options and performance share units	2	3	2	4

4.    RESTRUCTURING ACTIVITIES

Invigorate Program

During 2012, the Company committed to a course of action related to a multi-year program called Invigorate which is

designed to reduce its cost structure. Invigorate has consisted of several flagship programs, with structured plans in each, to drive savings and improve performance across the customer value chain. These flagship programs include: organization excellence; information technology excellence; procurement excellence; service excellence; lab excellence; and billing excellence. From 2012 through 2014, the Invigorate program was intended to partially offset reimbursement pressures and labor and benefit cost increases; free up additional resources to invest in science, innovation and other growth initiatives; and enable us to improve service quality and operating profitability.

In January 2015, the Company adopted a course of action related to its multi-year Invigorate program to further reduce its cost structure through 2017. This multi-year course of action continues to focus on the flagship program opportunities and new key opportunities such as: standardizing processes, information technology systems, equipment and data; enhancing electronic enabling services; and enhancing reimbursement for work performed. The estimated pre-tax charges expected to be incurred in 2015 in connection with this course of action are: $25 million to $30 million of employee separation costs and $10 million to $15 million of facility-related costs and asset impairment charges.     

9

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

The following table provides a summary of the Company's pre-tax restructuring charges associated with its Invigorate program and other restructuring activities for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Employee separation costs	$	6	$	6	$	21	$	14
Facility-related costs	—		3		—		4
Asset impairment charges	—		1		—		1
Total restructuring charges	$	6	$	10	$	21	$	19

Total restructuring charges incurred for the three and six months ended June 30, 2015 are primarily associated with various workforce reduction initiatives as the Company continues to simplify and restructure its organization. Of the total $6 million in restructuring charges incurred during the three months ended June 30, 2015, $4 million and $2 million were recorded in cost of services and selling, general and administrative expenses, respectively. Of the total $21 million in restructuring charges incurred during the six months ended June 30, 2015, $17 million and $4 million were recorded in cost of services and selling, general and administrative expenses, respectively.

Total restructuring charges incurred for the three and six months ended June 30, 2014 are primarily associated with various workforce reduction initiatives as the Company continued to simplify and restructure its organization. Of the total $10 million in restructuring charges incurred during the three months ended June 30, 2014, $4 million and $6 million were recorded in cost of services and selling, general and administrative expenses, respectively. Of the total $19 million in restructuring charges incurred during the six months ended June 30, 2014, $12 million and $7 million were recorded in cost of services and selling, general and administrative expenses, respectively.

Charges for all periods presented were primarily recorded in the Company's DIS business.

The following table summarizes activity in the restructuring liability as of June 30, 2015:

	Employee Separation Costs			Facility-Related Costs			Total
Balance, December 31, 2014	$	18		$	11		$	29
Current period charges	21			—			21
Less:
Cash payments	(19		)	(3		)	(22		)
Other / adjustments	—			(3		)	(3		)
Balance, June 30, 2015	$	20		$	5		$	25

5.     BUSINESS ACQUISITIONS

In the first quarter of 2015, the Company finalized the purchase price allocations associated with the 2014 acquisitions of Solstas Lab Partners Group ("Solstas") and Summit Health, Inc. ("Summit Health"). The purchase price allocation adjustments recorded in 2015 were not material. For further details regarding the Company's 2014 acquisitions, see Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K. For further details regarding the fair value of the estimated contingent consideration associated with the Summit Health and Steward Health Care Systems, LLC ("Steward") acquisitions, see Note 7.

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QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

6.     ASSETS HELD FOR SALE

On March 30, 2015, the Company entered into a definitive agreement with Quintiles Transnational Holdings Inc.

to form a global clinical trials central laboratory services joint venture, Q² Solutions. The transaction closed on July 1, 2015. In connection with the transaction, the Company contributed certain assets of its clinical trials testing business ("Clinical Trials") to the newly formed joint venture in exchange for a non-controlling, 40% ownership interest.

The assets of Clinical Trials that will be contributed to the joint venture, principally consisting of property, plant and equipment, net and goodwill, are classified as non-current assets held for sale in the consolidated balance sheet at June 30, 2015. The Company expects to recognize a non-cash gain based on the difference between the fair value of the Company’s equity interest in the newly formed joint venture over the carrying value of the assets contributed. The non-cash gain, which is currently being determined, will be recorded in the third quarter of 2015 and is expected to be material to the Company's results of operations.

Clinical Trials, which is included in all other operating segments, has not been classified as discontinued operations. For further details regarding business segment information, see Note 14.

7.     FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table provides a summary of the recognized assets and liabilities that are measured at fair value on a recurring basis:

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
June 30, 2015	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	48	$	48	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	15		—		15		—
Available-for-sale equity securities	10		10		—		—
Total	$	103	$	58	$	45	$	—
Liabilities:
Deferred compensation liabilities	$	84	$	—	$	84	$	—
Interest rate swaps	12		—		12		—
Call option	4		—		—		4
Contingent consideration	3		—		—		3
Total	$	103	$	—	$	96	$	7

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QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
December 31, 2014	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	49	$	49	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	17		—		17		—
Available-for-sale equity securities	9		9		—		—
Put option	1		—		—		1
Total	$	106	$	58	$	47	$	1
Liabilities:
Deferred compensation liabilities	$	85	$	—	$	85	$	—
Contingent consideration	17		—		—		17
Forward starting interest rate swaps	15		—		15		—
Interest rate swaps	13		—		13		—
Call option	5		—		—		5
Total	$	135	$	—	$	113	$	22

A full description regarding the Company's fair value measurements is contained in Note 7 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.    

The Company offers certain employees the opportunity to participate in non-qualified supplemental deferred compensation plans. A participant's deferrals, together with Company matching credits, are invested in a variety of participant-directed stock and bond mutual funds that are classified as trading securities. Changes in the fair value of these securities are measured using quoted prices in active markets based on the market price per unit multiplied by the number of units held exclusive of any transaction costs. A corresponding adjustment for changes in fair value of the trading securities is also reflected in the changes in fair value of the deferred compensation obligation. The deferred compensation liabilities are classified within Level 2 because their inputs are derived principally from observable market data by correlation to the trading securities.

The Company offers certain employees the opportunity to participate in a non-qualified deferred compensation program. A participant's deferrals, together with Company matching credits, are “invested” at the direction of the employee in a hypothetical portfolio of investments which are tracked by an administrator. The Company purchases life insurance policies, with the Company named as beneficiary of the policies, for the purpose of funding the program's liability. Changes in the cash surrender value of the life insurance policies are based upon earnings and changes in the value of the underlying investments. Changes in the fair value of the deferred compensation obligation are derived using quoted prices in active markets based on the market price per unit multiplied by the number of units. The cash surrender value and the deferred compensation obligations are classified within Level 2 because their inputs are derived principally from observable market data by correlation to the hypothetical investments.

The fair value measurements of the Company's interest rate swaps and forward starting swaps are model-derived valuations as of a given date in which all significant inputs are observable in active markets including certain financial information and certain assumptions regarding past, present and future market conditions.

Investment in available-for-sale equity securities represents an investment in registered shares of a publicly-held company listed on the Euronext Paris exchange. The Company's investment in available-for-sale equity securities is classified within Level 1 of the fair value hierarchy because the fair value is obtained from quoted prices in an active market.

12

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

In connection with the acquisition of certain businesses from UMass Memorial Medical Center ("UMass"), the Company granted to UMass a call option and UMass granted to the Company a put option for UMass to acquire an 18.90% equity interest in a newly formed entity. The put and call options are derivative instruments whose fair values have been measured using a combination of discounted cash flows and the Black-Scholes-Merton option pricing model. During the second quarter of 2015, UMass provided notice of its intention to exercise its call option and the transaction closed effective July 1, 2015. The put option expired unexercised. For further details on the exercise of the call option and closing of the transaction, see Note 15.

In April 2014, and as further detailed in Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K, the Company completed the acquisitions of Summit Health and Steward. In connection with these acquisitions the Company initially recorded an aggregate contingent consideration liability of $26 million. The contingent consideration liability was classified within Level 3 measured at fair value using a probability weighted and discounted cash flow method. These measurements are based on externally obtained inputs and management's probability assessments of the occurrence of triggering events, appropriately discounted considering the uncertainties associated with the obligations, as well as the likelihood of achieving financial targets. The initial probability estimate of the occurrence of such triggering events associated with the amounts the Company could be obligated to pay in future periods for both Summit Health and Steward was between 5% and 95%. The probability-weighted cash flows were then discounted using a discount rate of 1.5% to 2.8%. The estimated fair value of the contingent consideration associated with Summit Health was reduced to $13 million in the fourth quarter of 2014 and $0 in the second quarter of 2015. These reductions were a result of updated revenue forecasts for 2015 compared to the earn-out target included in the contingent consideration arrangement. The contingent consideration associated with Summit Health, if earned, would be paid in the first quarter of 2016, with a maximum payment of $25 million. The remaining contingent consideration associated with Steward is projected to be paid out in three equal annual installments, with a maximum payout of $4 million in total.

The following table provides a reconciliation of the beginning and ending balances of assets and liabilities using significant unobservable inputs (Level 3):

	Assets			Liabilities
	Put Option Derivative Asset			Contingent Consideration			Call Option Derivative Liability			Total Liabilities
Balance, December 31, 2014	1			$	17		5			$	22
Settlements	—			(1		)	—			(1		)
Total gains/losses - realized/unrealized:
Included in earnings	(1		)	(13		)	(1		)	(14		)
Balance, June 30, 2015	$	—		$	3		$	4		$	7

The $13 million gain included in earnings associated with the change in the fair value of contingent consideration for the three and six months ended June 30, 2015 is reported in other operating (income) expense, net.

The carrying amounts of cash and cash equivalents, accounts receivable and accounts payable and accrued expenses approximate fair value based on the short maturities of these instruments. At June 30, 2015, the fair value of the Company’s debt was estimated at $3.8 billion, which exceeded the carrying value by $84 million. At December 31, 2014, the fair value of the Company's debt was estimated at $4.2 billion, which exceeded the carrying value by $416 million. Principally all of the Company's debt is classified within Level 1 of the fair value hierarchy because the fair value of the debt is estimated based on rates currently offered to the Company with identical terms and maturities, using quoted active market prices and yields, taking into account the underlying terms of the debt instruments.

13

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

8.    GOODWILL AND INTANGIBLE ASSETS

The changes in goodwill for the six months ended June 30, 2015 and for the year ended December 31, 2014 are as follows:

	June 30, 2015			December 31, 2014
Balance, beginning of period	$	6,032		$	5,649
Goodwill acquired during the period	2			383
Reclassification to assets held for sale	(47		)	—
Balance, end of period	$	5,987		$	6,032

Principally all of the Company’s goodwill as of June 30, 2015 and December 31, 2014 is associated with its DIS business.

For the six months ended June 30, 2015, reclassification to assets held for sale was principally associated with Clinical Trials. For further details regarding assets held for sale, see Note 6.

For the year ended December 31, 2014, goodwill acquired was principally associated with the Solstas, Summit Health, and Steward acquisitions. Acquisitions during 2014 also resulted in $270 million of intangible assets, principally comprised of customer-related intangibles and trade names. For further details regarding the Company's 2014 acquisitions, see Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.        

Intangible assets at June 30, 2015 and December 31, 2014 consisted of the following:

	Weighted Average Amortization Period (in years)	June 30, 2015							December 31, 2014
		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizing intangible assets:
Customer-related intangibles	19	$	923	$	(278	)	$	645	$	929	$	(259	)	$	670
Non-compete agreements	5	6		(3		)	3		43		(37		)	6
Technology	14	117		(43		)	74		118		(38		)	80
Other	8	119		(64		)	55		152		(82		)	70
Total	17	1,165		(388		)	777		1,242		(416		)	826
Intangible assets not subject to amortization:
Trade names		244		—			244		244		—			244
Other		1		—			1		1		—			1
Total intangible assets		$	1,410	$	(388	)	$	1,022	$	1,487	$	(416	)	$	1,071

As of June 30, 2015, a fully amortized contractual non-compete agreement (cost of $37 million and accumulated amortization of $37 million) that expired was written-off.

Amortization expense related to intangible assets was $20 million and $25 million for the three months ended June 30, 2015 and 2014, respectively. For the six months ended June 30, 2015 and 2014, amortization expense related to intangible assets was $41 million and $47 million, respectively.

14

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

The estimated amortization expense related to amortizable intangible assets for each of the five succeeding fiscal years and thereafter as of June 30, 2015 is as follows:

Year Ending December 31,
Remainder of 2015	$	39
2016	71
2017	67
2018	63
2019	62
2020	62
Thereafter	413
Total	$	777

9.    DEBT

Long-term Debt

Long-term debt at June 30, 2015 and December 31, 2014 consisted of the following:

	June 30, 2015			December 31, 2014
Secured Receivables Credit Facility (0.88% at June 30, 2015)	$	85		$	—
5.45% Senior Notes due November 2015	—			500
3.20% Senior Notes due April 2016	151			304
6.40% Senior Notes due July 2017	—			375
2.70% Senior Notes due April 2019	300			300
4.75% Senior Notes due January 2020	523			524
2.50% Senior Notes due March 2020	299			—
4.70% Senior Notes due April 2021	550			549
4.25% Senior Notes due April 2024	309			311
3.50% Senior Notes due March 2025	597			—
6.95% Senior Notes due July 2037	247			421
5.75% Senior Notes due January 2040	368			439
4.70% Senior Notes due March 2045	300			—
Other	34			39
Debt issuance costs	(27		)	(20		)
Total long-term debt	3,736			3,742
Less: Current portion of long-term debt	168			518
Total long-term debt, net of current portion	$	3,568		$	3,224

Current Portion of Long-Term Debt

At June 30, 2015, current portion of long-term debt was principally comprised of the 3.20% Senior Notes due April 2016. At December 31, 2014, current portion of long-term debt was principally comprised of the 5.45% Senior Notes due November 2015.

15

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

2015 Senior Notes Offering

In March 2015, the Company completed a $1.2 billion senior notes offering (the “2015 Senior Notes”) that was sold in three tranches: (a) $300 million aggregate principal amount of 2.50% senior notes due March 2020, issued at a discount of $1 million; (b) $600 million aggregate principal amount of 3.50% senior notes due March 2025; and (c) $300 million aggregate principal amount of 4.70% senior notes due March 2045. These senior notes are unsecured obligations of the Company and rank equally with the Company's other senior unsecured obligations. None of the Company's senior notes have a sinking fund requirement.

The Company incurred $11 million of costs associated with the 2015 Senior Notes, which is included as a reduction to the carrying amount of long-term debt and is being amortized over the term of the related debt.

Retirement of Debt

In March 2015, the Company commenced a cash tender offer to purchase up to $250 million aggregate principal amount of its 6.95% Senior Notes due July 2037 and 5.75% Senior Notes due January 2040 using a portion of the proceeds from the 2015 Senior Notes. The Company repurchased $176 million of its 6.95% Senior Notes due July 2037 and $74 million of its 5.75% Senior Notes due January 2040. In April 2015, the Company redeemed all of the 5.45% Senior Notes due November 2015, $150 million of the 3.2% Senior Notes due April 2016 and all of the 6.4% Senior Notes due July 2017 with the remaining proceeds from the 2015 Senior Notes. For the three and six months ended June 30, 2015, the Company recorded a loss on retirement of debt in other (expense) income, net of $65 million and $144 million, respectively, principally comprised of premiums paid in connection with these transactions.

Maturities of Long-Term Debt

As of June 30, 2015, long-term debt matures as follows:

Year Ending December 31,
Remainder of 2015	$	12
2016	244
2017	6
2018	4
2019	302
2020	801
Thereafter	2,375
Total maturities of long-term debt	3,744
Unamortized discount	(17		)
Debt issuance costs	(27		)
Fair value basis adjustments attributable to hedged debt	36
Total long-term debt	3,736
Less: Current portion of long-term debt	168
Total long-term debt, net of current portion	$	3,568

For further discussion regarding the Company's debt, see Note 13 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.    

16

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

10.    FINANCIAL INSTRUMENTS

The Company uses derivative financial instruments to manage its exposure to market risks for changes in interest rates and, from time to time, foreign currencies. This strategy includes the use of interest rate swap agreements, forward starting interest rate swap agreements, treasury lock agreements and foreign currency forward contracts to manage its exposure to movements in interest and currency rates. The Company has established policies and procedures for risk assessment and the approval, reporting and monitoring of derivative financial instrument activities. These policies prohibit holding or issuing derivative financial instruments for speculative purposes. The Company does not enter into derivative financial instruments that contain credit-risk-related contingent features or requirements to post collateral.

Interest Rate Risk

The Company is exposed to interest rate risk on its cash and cash equivalents and its debt obligations. Interest income earned on cash and cash equivalents may fluctuate as interest rates change; however, due to their relatively short maturities, the Company does not hedge these assets or their investment cash flows and the impact of interest rate risk is not material. The Company's debt obligations consist of fixed-rate and variable-rate debt instruments. The Company's primary objective is to achieve the lowest overall cost of funding while managing the variability in cash outflows within an acceptable range. In order to achieve this objective, the Company has entered into interest rate swaps. Interest rate swaps involve the periodic exchange of payments without the exchange of underlying principal or notional amounts. Net settlements between the counterparties are recognized as an adjustment to interest expense.

Interest Rate Derivatives – Cash Flow Hedges

From time to time, the Company has entered into various interest rate lock agreements and forward starting interest rate swap agreements to hedge part of the Company's interest rate exposure associated with the variability in future cash flows attributable to changes in interest rates.

During the fourth quarter of 2013 and first quarter of 2014, the Company entered into various forward starting interest rate swap agreements for an aggregate notional amount of $150 million which were accounted for as cash flow hedges. In connection with the issuance of the 2015 Senior Notes, all of these agreements were settled and the Company paid $17 million. These losses are deferred in stockholders’ equity, net of income taxes, as a component of accumulated other comprehensive loss, and amortized as an adjustment to interest expense over the term of the Senior Notes due 2025.

In March 2015, the Company entered into interest rate lock agreements with several financial institutions for a total notional amount of $350 million which were accounted for as cash flow hedges. These agreements were entered into to hedge a portion of the Company’s interest rate exposure associated with variability in future cash flows attributable to changes in the five-year, ten-year and thirty-year treasury rates related to the planned issuance of the 2015 Senior Notes. In connection with the issuance of the 2015 Senior Notes, these agreements were settled and the Company received $3 million. These gains are deferred in stockholders’ equity, net of income taxes, as a component of accumulated other comprehensive loss, and amortized as an adjustment to interest expense over the term of the respective senior notes.

The total net loss, net of taxes, recognized in accumulated other comprehensive loss, related to the Company's cash flow hedges as of June 30, 2015 and December 31, 2014 was $13 million and $15 million, respectively. The loss recognized on the Company's cash flow hedges for the three and six months ended June 30, 2015 and 2014, as a result of ineffectiveness, was not material. The net amount of deferred losses on cash flow hedges that is expected to be reclassified from accumulated other comprehensive loss into interest expense, net within the next twelve months is $3 million.

17

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

Interest Rate Derivatives – Fair Value Hedges

The Company maintains various fixed-to-variable interest rate swaps to convert a portion of the Company's long-term debt into variable interest rate debt. A summary of the notional amounts of these interest rate swaps as of June 30, 2015 and December 31, 2014 is as follows:

		Notional Amount
Debt Instrument	Floating Rate Paid by the Company	June 30, 2015		December 31, 2014
3.20% Senior Notes due April 2016	Six-month LIBOR plus a 2.3% spread	$	—	$	200
4.75% Senior Notes due January 2020	One-month LIBOR plus a 3.6% spread	350		350
4.70% Senior Notes due April 2021	One-month LIBOR plus a 2.45% to 3.39% spread	400		400
4.25% Senior Notes due April 2024	One-month LIBOR plus a 1.54% to 1.59% spread	250		250
3.50% Senior Notes due March 2025	One-month LIBOR plus a 1.44% spread	200		—
		$	1,200	$	1,200

In April 2015, the Company terminated the outstanding interest rate swaps associated with the Senior Notes due 2016. The value of these interest rate swaps at the date of termination was not material. The net amount of losses on fair value hedges related to the Senior Notes due 2016 reclassified into earnings upon redemption for the three and six months ended June 30, 2015 was not material.    

Since inception, the fair value hedges have been effective or highly effective; therefore, there is no impact on earnings for the three and six months ended June 30, 2015 and 2014 as a result of hedge ineffectiveness.

Interest Rate Derivatives - Economic Hedges

In March 2015, in connection with the cash tender offer and redemption discussed in Note 9, the Company entered into reverse interest rate lock agreements with several financial institutions which were not designated for hedge accounting. The Company entered into these agreements to hedge the variability in cash flows associated with $280 million of the $1.3 billion principal amount of debt that was retired in the first and second quarters of 2015. Certain of these agreements were settled during the first quarter of 2015 which resulted in a gain of $3 million which was recognized in other (expense) income, net. The remaining agreements were settled in the second quarter of 2015 and the gain for the period ended June 30, 2015 was not material.

18

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

A summary of the fair values of derivative instruments in the consolidated balance sheets is stated in the table below:

	June 30, 2015				December 31, 2014
	Balance Sheet Classification	Fair Value			Balance Sheet Classification	Fair Value
Derivatives Designated as Hedging Instruments
Asset Derivatives:
Interest rate swaps	Other assets	$	15		Other assets	$	17
Liability Derivatives:
Interest rate swaps	Other liabilities	12			Other liabilities	13
Forward starting interest rate swaps		—			Other liabilities	15
Total Liability Derivatives		12				28
Derivatives Not Designated as Hedging Instruments
Asset Derivatives:
Put option		—			Prepaid expenses and other current assets	1
Liability Derivatives:
Call option	Accounts payable and accrued expenses	4			Accounts payable and accrued expenses	5
Total Net Derivatives (Liabilities)		$	(1	)		$	(15	)

A full description regarding the Company's use of derivative financial instruments is contained in Note 14 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.        

11.    STOCKHOLDERS’ EQUITY

Components of Comprehensive Income

The market valuation adjustments represent unrealized holding gains (losses) on available-for-sale securities, net of taxes. The net deferred loss on cash flow hedges represents deferred losses on the Company’s interest rate related derivative financial instruments designated as cash flow hedges, net of amounts reclassified to interest expense (see Note 10). For the three and six months ended June 30, 2015 and 2014, the tax effects related to the market valuation adjustments and deferred losses were not material. Foreign currency translation adjustments are not adjusted for income taxes since they relate to indefinite investments in non-U.S. subsidiaries.

Dividend Program

During the first and second quarters of 2015, the Company's Board of Directors declared a quarterly cash dividend of $0.38 per common share. During each of the quarters of 2014, the Company's Board of Directors declared a quarterly cash dividend of $0.33 per common share.

Share Repurchase Program

At June 30, 2015, $547 million remained available under the Company’s share repurchase authorizations. The share repurchase authorization has no set expiration or termination date.    

19

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

For the three months ended June 30, 2015, the Company repurchased 0.6 million shares of its common stock at an average price of $72.03 per share for $39 million. For the six months ended June 30, 2015, the Company repurchased 2.1 million shares of its common stock at an average price of $71.62 per share for $149 million. For the three and six months ended June 30, 2015, the Company reissued 0.4 million shares and 1.2 million shares, respectively, for employee benefit plans.

For the three months ended June 30, 2014, the Company repurchased 0.4 million shares of its common stock at an average price of $57.74 per share for a total of $25 million. For the six months ended June 30, 2014, the Company repurchased 1.0 million shares of its common stock at an average price of $54.84 per share for a total of $57 million. For the three and six months ended June 30, 2014, the Company reissued 0.4 million shares and 0.8 million shares, respectively, for employee benefit plans.

12.    SUPPLEMENTAL CASH FLOW & OTHER DATA

Supplemental cash flow and other data for the three and six months ended June 30, 2015 and 2014 is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Depreciation expense	$	55		$	56		$	112		$	109
Amortization expense	20			25			41			47
Depreciation and amortization expense	$	75		$	81		$	153		$	156
Interest expense	$	(37	)	$	(42	)	$	(83	)	$	(82	)
Interest income	—			—			1			1
Interest expense, net	$	(37	)	$	(42	)	$	(82	)	$	(81	)
Interest paid	$	45		$	30		$	99		$	82
Income taxes paid	90			129			109			138
Assets acquired under capital leases	2			8			2			10
Accounts payable associated with capital expenditures	9			14			9			14
Dividends payable	$	55		$	48		$	55		$	48
Businesses acquired:
Fair value of assets acquired	$	2		$	199		$	2		$	845
Fair value of liabilities assumed	—			12			—			82
Fair value of net assets acquired	2			187			2			763
Merger consideration paid (payable), net	4			(30		)	4			(30		)
Cash paid for business acquisitions	6			157			6			733
Less: Cash acquired	—			1			—			10
Business acquisitions, net of cash acquired	$	6		$	156		$	6		$	723

20

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

13.     COMMITMENTS AND CONTINGENCIES

The Company has a line of credit with a financial institution totaling $85 million for the issuance of letters of credit (the “Letter of Credit Line”). The Letter of Credit Line, which is renewed annually, matures on November 17, 2015. The Company can also issue letters of credit under its senior unsecured revolving credit facility. For further discussion regarding the Company's senior unsecured revolving credit facility, see Note 13 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.    

In support of its risk management program, to ensure the Company’s performance or payment to third parties, $67 million in letters of credit, principally associated with the Letter of Credit Line, were outstanding at June 30, 2015. The letters of credit primarily represent collateral for current and future automobile liability and workers’ compensation loss payments.

Contingent Lease Obligations

The Company remains subject to contingent obligations under certain real estate leases that were entered into by certain predecessor companies of a subsidiary prior to the Company's acquisition of the subsidiary. No liability has been recorded for any of these potential contingent obligations. See Note 17 to the consolidated financial statements contained in the Company’s 2014 Annual Report on Form 10-K for further details.

Settlements

In 2010, a purported class action entitled In re Celera Corp. Securities Litigation was filed in the United States District Court for the Northern District of California against Celera Corporation and certain of its directors and current and former officers. An amended complaint filed in October 2010 alleges that from April 2008 through July 22, 2009, the defendants made false and misleading statements regarding Celera's business and financial results with an intent to defraud investors. The complaint was further amended in 2011 to add allegations regarding a financial restatement. Celera and the director and officer defendants have reached an agreement to settle this action, which the court has preliminarily approved. The settlement is fully covered by insurance.

Legal Matters

The Company is involved in various legal proceedings. Some of the proceedings against the Company involve claims that could be substantial in amount.

In addition to the matters described below, in the normal course of business, the Company has been named, from time to time, as a defendant in various legal actions, including arbitrations, class actions and other litigation, arising in connection with the Company's activities as a provider of diagnostic testing, information and services. These legal actions may include lawsuits alleging negligence or other similar legal claims. These actions could involve claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages, and could have an adverse impact on the Company's client base and reputation.

The Company is also involved, from time to time, in other reviews, investigations and proceedings by governmental agencies regarding the Company's business, including, among other matters, operational matters, which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. The number of these reviews, investigations and proceedings has increased in recent years with regard to many firms in the healthcare services industry, including the Company.

In August 2011, the Company received a subpoena from the U.S. Attorney for the Northern District of Georgia seeking various business records, including records related to the Company's compliance program, certain marketing materials, certain product offerings, and test ordering and other policies. The Company is cooperating with the request.

In June 2010, the Company received a subpoena from the Florida Attorney General's Office seeking documents relating to the Company's pricing and billing practices as they relate to Florida’s Medicaid program. The Company cooperated with the requests. In November 2013, the State of Florida intervened as a plaintiff in a civil lawsuit, Florida ex rel. Hunter Laboratories LLC v. Quest Diagnostics Incorporated, et al., filed in Florida Circuit Court. The suit, originally filed by a

21

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

competitor laboratory, alleges that the Company overcharged Florida’s Medicaid program. The Company's motion to dismiss the state's amended complaint was denied.         

In April 2015, a qui tam civil lawsuit entitled United States ex rel. Mayes v. Berkeley HeartLab, Inc., et al., filed in the U.S. District Court for the District of South Carolina, was unsealed. The complaint alleges that certain alleged business practices of the defendants violate the False Claims Act, and seeks monetary relief. The United States has intervened as a plaintiff as to Berkeley HeartLab, Inc., a subsidiary of the Company; the United States did not intervene as a plaintiff as to Quest Diagnostics Incorporated. Before the lawsuit was unsealed, Berkeley HeartLab and Quest Diagnostics Incorporated had received subpoenas, civil investigative demands and interrogatories related to the matter.

The federal or state governments may bring claims based on the Company's current practices, which it believes are lawful. In addition, certain federal and state statutes, including the qui tam provisions of the federal False Claims Act, allow private individuals to bring lawsuits against healthcare companies on behalf of government or private payers. The Company is aware of lawsuits, and from time to time has received subpoenas, related to billing practices based on the qui tam provisions of the Civil False Claims Act or other federal and state statutes, regulations or other laws. The Company understands that there may be other pending qui tam claims brought by former employees or other "whistle blowers" as to which the Company cannot determine the extent of any potential liability.

Management cannot predict the outcome of such matters. Although management does not anticipate that the ultimate outcome of such matters will have a material adverse effect on the Company's financial condition, given the high degree of judgment involved in establishing loss estimates related to these types of matters, the outcome of such matters may be material to the Company's results of operations or cash flows in the period in which the impact of such matters is determined or paid.

These matters are in different stages. Some of these matters are in their early stages. Matters may involve responding to and cooperating with various government investigations and related subpoenas. As of June 30, 2015, the Company does not believe that any losses related to the legal matters described above are probable. While the Company believes that a reasonable possibility exists that losses may have been incurred related to the legal matters described above, based on the nature and status of these matters, potential losses, if any, cannot be estimated.

Reserves for Legal Matters

Reserves for legal matters, other than those described above, totaled $16 million and $11 million at June 30, 2015 and December 31, 2014, respectively.

Reserves for General and Professional Liability Claims

As a general matter, providers of clinical testing services may be subject to lawsuits alleging negligence or other similar legal claims. These suits could involve claims for substantial damages. Any professional liability litigation could also have an adverse impact on the Company's client base and reputation. The Company maintains various liability insurance coverages for, among other things, claims that could result from providing, or failing to provide, clinical testing services, including inaccurate testing results, and other exposures. The Company's insurance coverage limits its maximum exposure on individual claims; however, the Company is essentially self-insured for a significant portion of these claims. Reserves for such matters, including those associated with both asserted and incurred but not reported claims, are established by considering actuarially determined losses based upon the Company's historical and projected loss experience. Such reserves totaled approximately $116 million and $113 million at June 30, 2015 and December 31, 2014, respectively. Management believes that established reserves and present insurance coverage are sufficient to cover currently estimated exposures. Management cannot predict the outcome of any claims made against the Company. Although management does not anticipate that the ultimate outcome of any such proceedings or claims will have a material adverse effect on the Company's financial condition, given the high degree of judgment involved in establishing accruals for loss estimates related to these types of matters, the outcome may be material to the Company's results of operations or cash flows in the period in which the impact of such claims is determined or paid.

22

QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

14.    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. The Company's DS business offers 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 classified certain assets of Clinical Trials, which is included in all other operating segments, as held for sale. For further details regarding assets held for sale, see Note 6.

During 2014, the Company acquired Solstas, Summit Health and Steward which are included in the Company's DIS business.

At June 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 six months ended June 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 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. 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.

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QUEST DIAGNOSTICS INCORPORATED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS – CONTINUED

(unaudited)

(dollars in millions unless otherwise indicated)

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net revenues:
DIS business	$	1,771		$	1,763		$	3,463		$	3,377
All other operating segments	154			139			301			271
Total net revenues	$	1,925		$	1,902		$	3,764		$	3,648
Operating earnings (loss):
DIS business	$	302		$	293		$	544		$	524
All other operating segments	30			22			56			40
General corporate activities	(31		)	(53		)	(71		)	(94		)
Total operating income	301			262			529			470
Non-operating expenses, net	(94		)	(33		)	(210		)	(65		)
Income before income taxes	207			229			319			405
Income tax expense	78			87			120			152
Net income	129			142			199			253
Less: Net income attributable to noncontrolling interests	11			9			20			16
Net income attributable to Quest Diagnostics	$	118		$	133		$	179		$	237

15.    SUBSEQUENT EVENTS

Sale of Noncontrolling Interest in Subsidiary

On July 1, 2015, UMass exercised its call option, acquiring an 18.9% noncontrolling interest in a subsidiary of the Company that performs diagnostic information services in a defined territory within the state of Massachusetts. In connection with the transaction, the Company paid the $50 million deferred consideration associated with the January 2, 2013 acquisition of the Massachusetts-based clinical outreach and anatomic pathology businesses from UMass and received $50 million associated with the call option exercise price. The deferred consideration is included in accounts payable and accrued expenses at June 30, 2015.

Clinical Trials Central Laboratory Services Joint Venture

On July 1, 2015, the Company closed a transaction with Quintiles Transnational Holdings Inc. to form a global clinical trials central laboratory services joint venture, Q² Solutions. In connection with the transaction, the Company contributed certain assets of its Clinical Trials business to the newly formed joint venture in exchange for a non-controlling, 40% ownership interest. For further details regarding the transaction, see Note 6.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Our Company

Quest Diagnostics is the world's leading provider of diagnostic information services empowering people to take action to improve health outcomes.  We use our extensive database of clinical lab results to derive diagnostic insights that reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management.  Our diagnostic information services business ("DIS") provides insights through clinical testing and related services to patients, physicians, hospitals, accountable care organizations, integrated delivery networks, health plans, employers and others and makes up over 90% of our consolidated net revenues. The balance of our net revenues is derived from our Diagnostic Solutions ("DS") businesses, which consist of our risk assessment services, clinical trials testing (see discussion regarding assets held for sale below), diagnostic products and healthcare information technology businesses. Our business segment information is disclosed in Note 14 to the interim unaudited consolidated financial statements.

Second Quarter Highlights

Our second quarter performance reflects continued execution of our five-point strategy and we are seeing a moderation of government reimbursement pressure relative to the past two years. Our total net revenues of $1.9 billion were 1.2% above the prior year period. Excluding the impact of acquisitions, total net revenues grew by 0.8%. DIS revenues of $1.8 billion were 0.4% above the prior year period. DIS volume, measured by the number of requisitions, decreased 0.4% compared to the prior year period. Revenue per requisition increased 0.9% compared to the prior year period, reflecting growth in gene-based and esoteric testing and business mix shifts. This was the first quarter we reported year-over-year revenue per requisition growth since the first quarter of 2012. DS revenues of $154 million were 11.1% above the prior year period. The increase in DS revenues was primarily driven by our clinical trials testing, diagnostic products and risk assessment services businesses. Net income attributable to Quest Diagnostics' stockholders was $118 million, or $0.81 per diluted share, for the three months ended June 30, 2015 and was impacted by net charges of $0.36 per diluted share, primarily associated with the loss on early retirement of debt and related refinancing charges and restructuring and integration charges.

Five-point Strategy

Progress on the execution of our five-point strategy during the second quarter of 2015 includes:

• We grew total net revenues 1.2% to $1.9 billion and operating income 14.9% to $301 million.

• We continue to grow revenues from new relationships with hospitals and integrated delivery networks by helping them improve health outcomes and reduce costs. Most recently, we entered into a definitive agreement to acquire MemorialCare Health System's laboratory outreach services business, which provides outreach laboratory testing in southern California. The acquisition is expected to close in August 2015.

• We are enhancing our diagnostic information services to help customers with population health, data analytics and decision support tools which will help to drive growth as well as deliver a superior customer experience.

• We closed on our Q² Solutions joint venture with Quintiles Transnational Holdings Inc. ("Quintiles") on July 1, 2015, forming a global clinical trials central laboratory services company into which we contributed our clinical trials testing business in exchange for a 40% ownership interest.

• We completed the refinancing of over $1.2 billion in outstanding senior notes, resulting in reduced future interest expense and an improved maturity profile.

• We repurchased $39 million of our common stock as part of our Common Stock repurchase program.

Invigorate Program

We are engaged in a multi-year program called Invigorate. We delivered more than $700 million in run-rate savings as we exited 2014. In November 2014, we announced our goal to deliver an additional $600 million in run-rate savings as we exit 2017. Achieving this goal would bring the total savings from the Invigorate program to $1.3 billion in run-rate savings, compared to 2011.

Invigorate has consisted of several flagship programs, with structured plans in each, to drive savings and improve performance across the customer value chain. These flagship programs include: organization excellence; information technology excellence; procurement excellence; service excellence; lab excellence; and billing excellence. In addition to these programs, we have identified new key opportunities to change how we operate in order to meet our goal of delivering the additional $600 million in run-rate savings as we exit 2017. These new key opportunities include: standardizing our processes, information technology systems, equipment and data; enhancing electronic enabling services; and enhancing reimbursement for

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work we perform. We believe that our efforts to standardize our information technology systems, equipment and data also will foster our efforts to restore growth, supporting the value creation initiatives of our clinical franchises by enhancing our operational flexibility, empowering and enhancing the customer experience, facilitating the delivery of actionable insights and bolstering our large data platform.

In January 2015, we adopted a course of action related to this multi-year program. We developed a high-level estimate of the pre-tax charges expected to be incurred in connection with the course of action for the program: $300 million. We also developed high-level estimates of the pre-tax charges expected to be incurred in connection with the course of action for 2015 totaling $95 million to $115 million consisting of: $25 million to $30 million of employee separation costs; $10 million to $15 million of facility-related costs and asset impairment charges; and $60 million to $70 million of systems conversion and integration costs. As detailed plans to implement the course of action are approved and executed, it will result in charges to earnings. Principally all of the total estimated pre-tax charges expected to be incurred in 2015 are anticipated to result in cash expenditures. The actual charges incurred in connection with the course of action in 2015 could be materially different from these estimates.

From 2012 through 2014, the cumulative charges recorded in connection with the Invigorate program were approximately $266 million, including approximately $178 million of cumulative pre-tax employee separation costs and other restructuring related costs. Through June 30, 2015, the cumulative charges recorded in connection with the January 2015 course of action were approximately $47 million, including approximately $21 million of cumulative pre-tax employee separation costs and other restructuring related costs.

For additional information on the Invigorate program and associated costs, see Note 4 to the interim unaudited consolidated financial statements.

Assets Held for Sale

At June 30, 2015, certain assets of our clinical trials testing business are classified as held for sale in our interim unaudited consolidated balance sheet.

On March 30, 2015, we entered into a definitive agreement with Quintiles to form a global clinical trials central laboratory services joint venture, Q² Solutions. The transaction closed on July 1, 2015. In connection with the transaction, we contributed certain assets of our clinical trials testing business to the newly formed joint venture in exchange for a non-controlling, 40% ownership interest.

We expect to recognize a non-cash gain based on the difference between the fair value of our equity interest in the newly formed joint venture over the carrying value of the assets contributed. The non-cash gain, which is currently being determined, will be recorded in the third quarter of 2015 and is expected to be material to our results of operations.

Senior Notes Offering

In March 2015, we completed a $1.2 billion senior notes offering (the "2015 Senior Notes") that was sold in three tranches: (a) $300 million aggregate principal amount of 2.50% senior notes due March 2020, issued at a discount of $1 million; (b) $600 million aggregate principal amount of 3.50% senior notes due March 2025; and (c) $300 million aggregate principal amount of 4.70% senior notes due March 2045. A portion of the proceeds from the 2015 Senior Notes were used to fund the cash tender offer (the "Tender Offer") in March 2015 in which we purchased $176 million of our 6.95% Senior Notes due July 2037 and $74 million of our 5.75% Senior Notes due January 2040. In connection with the Tender Offer, we recorded a $79 million pre-tax loss on early retirement of debt in the first quarter of 2015.

The remaining proceeds from the 2015 Senior Notes, together with borrowing under our existing credit facilities, were used in April 2015 to redeem all of our $500 million 5.45% Senior Notes due November 2015, $150 million, or 50%, of our 3.2% Senior Notes due April 2016 and all of our $375 million 6.4% Senior Notes due July 2017 (the "Redemption"). In connection with the Redemption, we recorded a $65 million pre-tax loss on early retirement of debt in the second quarter of 2015.

The 2015 Senior Notes, Tender Offer and Redemption are further described in Note 9 to the interim unaudited consolidated financial statements.

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Critical Accounting Policies

Other than the "Accounting for stock-based compensation expense - valuation of stock option awards" discussed below, there have been no significant changes to our critical accounting policies from those disclosed in our 2014 Annual Report on Form 10-K.

Accounting for stock-based compensation expense - valuation of stock option awards

Beginning in 2015, we changed the method for estimating the fair value of our stock option awards from a lattice-based option-valuation method to a Black-Scholes option-valuation model which has been applied prospectively to stock option awards. The change did not have a significant effect on our stock-based compensation expense reported in our interim unaudited consolidated statements of operations because we grant stock option awards based on a prescribed dollar value.

We estimate the fair value of stock option awards on the date of grant using the Black-Scholes option-valuation model which requires management to make certain assumptions regarding: (i) the expected volatility in the market price of our common stock; (ii) dividend yield; (iii) risk-free interest rates; and (iv) the period of time employees are expected to hold the award prior to exercise (referred to as the expected holding period). The expected volatility under the Black-Scholes option-valuation model is based on historical volatilities of our common stock. The dividend yield is based on the approved annual dividend rate in effect and current market price of the underlying common stock at the time of grant. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for bonds with maturities consistent with the expected holding period of the related award. The expected holding period of the awards granted is estimated using the historical exercise behavior of employees.

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Results of Operations

The following tables sets forth certain results of operations data for the periods presented:

	Three Months Ended June 30,											Six Months Ended June 30,
	2015			2014			Increase (Decrease)			% Increase (Decrease)		2015			2014			Increase (Decrease)			% Increase (Decrease)
	(dollars in millions, except per share amounts)
Net revenues:
DIS business	$	1,771		$	1,763		$	8		0.4	%	$	3,463		$	3,377		$	86		2.6	%
DS businesses	154			139			15			11.1		301			271			30			11.1
Total net revenues	$	1,925		$	1,902		$	23		1.2	%	$	3,764		$	3,648		$	116		3.2	%
Operating costs and expenses:
Cost of services	$	1,182		$	1,174		$	8		0.7	%	$	2,345		$	2,275		$	70		3.1	%
Selling, general and administrative	429			440			(11		)	(2.7	)	848			855			(7		)	(0.9	)
Amortization of intangible assets	20			25			(5		)	(20.5	)	41			47			(6		)	(12.1	)
Other operating (income) expense, net	(7		)	1			(8		)	NM		1			1			—			NM
Total operating costs and expenses	$	1,624		$	1,640		$	(16	)	(1.0	)%	$	3,235		$	3,178		$	57		1.8	%
Operating income	$	301		$	262		$	39		14.9	%	$	529		$	470		$	59		12.6	%
Other income (expense):
Interest expense, net	$	(37	)	$	(42	)	$	(5	)	(9.8	)%	$	(82	)	$	(81	)	$	1		2.1	%
Equity in earnings of equity method investees	7			6			1			1.9		14			12			2			10.2
Other (expense) income, net	(64		)	3			67			NM		(142		)	4			146			NM
Total non-operating expenses, net	$	(94	)	$	(33	)	$	61		NM		$	(210	)	$	(65	)	$	145		NM
Income tax expense	$	78		$	87		$	(9	)	(10.8	)%	$	120		$	152		$	(32	)	(21.3	)%
Effective income tax rate	37.6		%	37.9		%	(0.3		)%	NM		37.5		%	37.5		%	—		%	NM
Net income attributable to Quest Diagnostics	$	118		$	133		$	(15	)	(11.5	)%	$	179		$	237		$	(58	)	(24.5	)%
Diluted earnings per common share attributable to Quest Diagnostics’ common stockholders	$	0.81		$	0.92		$	(0.11	)	(12.0	)%	$	1.23		$	1.63		$	(0.40	)	(24.5	)%

NM - Not Meaningful

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The following table sets forth certain results of operations data as a percentage of net revenues for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Net revenues:
DIS business	92.0	%	92.7	%	92.0	%	92.6	%
DS businesses	8.0		7.3		8.0		7.4
Total net revenues	100.0	%	100.0	%	100.0	%	100.0	%
Operating costs and expenses:
Cost of services	61.4	%	61.7	%	62.3	%	62.4	%
Selling, general and administrative	22.3		23.1		22.5		23.4
Amortization of intangible assets	1.0		1.3		1.1		1.3
Other operating (income) expense, net	(0.3	)	0.1		—		—
Total operating costs and expenses	84.4	%	86.2	%	85.9	%	87.1	%
Operating income	15.6	%	13.8	%	14.1	%	12.9	%
Bad debt expense	4.1	%	3.9	%	4.2	%	4.1	%

Operating Results    

Results for the three months ended June 30, 2015 were affected by certain items that impacted diluted earnings per share by $0.36. During the three months ended June 30, 2015, we recorded pre-tax charges of $66 million, or $0.28 per diluted share, related to the loss on early retirement of debt and related refinancing charges in connection with the Redemption. In addition, we recorded pre-tax charges of $23 million, or $0.10 per diluted share, related to restructuring costs primarily associated with workforce reductions, integration costs associated with acquisitions and professional fees associated with the further restructuring of our business ($11 million in cost of services and $12 million in selling, general and administrative expenses). We also recorded other items comprising a net pre-tax gain of $3 million, or $0.02 per diluted share. The other items include a gain of $13 million associated with a decrease in the fair value of the contingent consideration accrual associated with our Summit Health acquisition, which was partially offset by costs incurred related to legal matters and non-cash asset impairment charges.

Results for the six months ended June 30, 2015 were affected by certain items that impacted diluted earnings per share by $0.90. During the six months ended June 30, 2015, we recorded pre-tax charges of $150 million, or $0.64 per diluted share, related to the loss on early retirement of debt and related refinancing charges in connection with the Tender Offer and Redemption. In addition, we recorded pre-tax charges of $54 million, or $0.22 per diluted share, related to restructuring costs primarily associated with workforce reductions, integration costs associated with acquisitions and professional fees associated with the further restructuring of our business ($31 million in cost of services and $23 million in selling, general and administrative expenses). We also incurred net pre-tax charges of $7 million, or $0.04 per diluted share, primarily associated with non-cash asset impairment charges primarily associated with our Celera Products business and costs incurred related to legal matters, partially offset by a gain of $13 million associated with a decrease in the fair value of the contingent consideration accrual associated with our Summit Health acquisition.

Results for the three months ended June 30, 2014 were affected by certain items that impacted diluted earnings per share by $0.16. During the three months ended June 30, 2014, we recorded pre-tax charges of $27 million, or $0.13 per diluted share, related to restructuring costs primarily associated with workforce reductions, integration costs and professional fees associated with the further restructuring of our business ($11 million in cost of services and $16 million in selling, general and administrative expenses), including $5 million of pre-tax integration and transaction costs associated with acquisitions. In addition, we recorded a pre-tax charge of $7 million, or $0.03 per diluted share, principally associated with the settlement of legal matters.

Results for the six months ended June 30, 2014 were affected by certain items that impacted diluted earnings per share by $0.29. During the six months ended June 30, 2014, we recorded pre-tax charges of $51 million, or $0.24 per diluted share, related to restructuring costs primarily associated with workforce reductions, integration costs and professional fees associated

29

with the further restructuring of our business ($23 million in cost of services and $28 million in selling, general and administrative expenses), including $11 million of pre-tax integration and transaction costs associated with acquisitions. In addition, we recorded pre-tax charges of $11 million, or $0.05 per diluted share, principally associated with the settlement of legal matters.

Net Revenues

Net revenues for the three months ended June 30, 2015 were 1.2% above the prior year level. Acquisitions contributed nearly 0.4% to net revenue growth.

DIS revenue, which accounted for over 90% of our consolidated net revenues, increased by 0.4% for the three months ended June 30, 2015 compared to the prior year period.

DIS volume, measured by the number of requisitions, decreased 0.4% for the three months ended June 30, 2015 compared to the prior year period.

Revenue per requisition for the three months ended June 30, 2015 increased 0.9% compared to the prior year period, reflecting growth in gene-based and esoteric testing and business mix shifts.

For the three months ended June 30, 2015, combined revenues in our DS businesses increased by 11.1% compared to the prior year period. The increase was primarily driven by an increase in revenues in our clinical trials testing, diagnostic products and risk assessment services businesses.

Net revenues for the six months ended June 30, 2015 were 3.2% above the prior year level. Acquisitions contributed nearly 2.4% to consolidated revenue growth.

DIS revenue, which accounted for over 90% of our consolidated net revenues, increased by 2.6% for the six months ended June 30, 2015 compared to the prior year period. Acquisitions contributed nearly 2.6% to DIS revenue growth.

DIS volume, measured by the number of requisitions, increased 2.4% for the six months ended June 30, 2015 compared to the prior year period. Acquisitions contributed approximately 2.9% to DIS volume in the period.

Revenue per requisition for the six months ended June 30, 2015 increased 0.1% compared to the prior year period, reflecting growth in gene-based and esoteric testing and business mix shifts. Acquisitions negatively impacted revenue per requisition by 0.3% in the period.

For the six months ended June 30, 2015, combined revenues in our DS businesses increased by 11.1% compared to the prior year period. The increase was primarily driven by an increase in revenues in our clinical trials testing, diagnostic products and risk assessment services businesses.

Cost of Services

Cost of services consists principally of costs for obtaining, transporting and testing specimens as well as facility costs used for the delivery of our services.

Cost of services increased $8 million for the three months ended June 30, 2015 as compared to the prior year period. This increase was primarily driven by higher costs associated with increased revenues, which was partially offset by cost reductions under the Invigorate program and acquisition related synergies.

Cost of services increased $70 million for the six months ended June 30, 2015 as compared to the prior year period. This increase was primarily driven by additional operating costs associated with our 2014 acquisitions and, to a lesser extent, higher restructuring and integration charges and higher compensation and benefits, which were partially offset by cost reductions under the Invigorate program and acquisition related synergies.

Selling, General and Administrative Expenses ("SG&A")

SG&A consist principally of the costs associated with our sales and marketing efforts, billing operations, bad debt expense and general management and administrative support as well as administrative facility costs.

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SG&A decreased $11 million and $7 million for the three and six months ended June 30, 2015 as compared to the prior year periods. The decrease in SG&A is primarily driven by lower compensation and benefits, primarily as a result of cost reductions under the Invigorate program and acquisition related synergies, and lower restructuring and integration charges. These decreases were partially offset by higher bad debt expense. For the six months ended June 30, 2015, the decreases were also partially offset by additional operating costs associated with our acquisitions.

Other Operating (Income) Expense, net

Other operating (income) expense, net includes miscellaneous income and expense items related to operating activities. Other operating (income) expense, net for the three months ended June 30, 2015, includes a gain of $13 million associated with a decrease in the fair value of the contingent consideration accrual associated with our Summit Health acquisition, partially offset by a non-cash asset impairment charge. For the six months ended June 30, 2015, other operating (income) expense, net includes non-cash asset impairment charges primarily associated with our Celera Products business, substantially offset by a gain of $13 million associated with a decrease in the fair value of the contingent consideration accrual associated with our Summit Health acquisition.

Interest Expense, net

Interest expense, net, for the three months ended June 30, 2015, decreased $5 million as compared to the prior year period. The decrease in interest expense, net was primarily a result of lower outstanding debt balances compared to the prior year period and lower interest rates associated with our 2015 Senior Notes.

Interest expense, net, for the six months ended June 30, 2015, was essentially flat compared to the prior year period.

Other (Expense) Income, net

Other (expense) income, net represents miscellaneous income and expense items related to non-operating activities, such as gains and losses associated with investments and other non-operating assets. For the three and six months ended June 30, 2015, other (expense) income, net includes losses on early retirement of debt of $65 million and $144 million, respectively.

Income Tax Expense

The decrease in income tax expense for the three and six months ended June 30, 2015, compared to the prior year period, is primarily due to income tax benefits associated with the loss on early retirement of debt associated with the Tender Offer and Redemption.

Quantitative and Qualitative Disclosures About Market Risk

We address our exposure to market risks, principally the market risk of changes in interest rates, through a controlled program of risk management that includes the use of derivative financial instruments. We do not hold or issue derivative financial instruments for speculative purposes. We seek to mitigate the variability in cash outflows that result from changes in interest rates by maintaining a balanced mix of fixed-rate and variable-rate debt obligations. In order to achieve this objective, we have entered into interest rate swaps. Interest rate swaps involve the periodic exchange of payments without the exchange of underlying principal or notional amounts. Net settlements are recognized as an adjustment to interest expense. We believe that our exposures to foreign exchange impacts and changes in commodity prices are not material to our consolidated financial condition or results of operations.

At June 30, 2015 and December 31, 2014, the fair value of our debt was estimated at approximately $3.8 billion and $4.2 billion, respectively, using quoted prices in active markets and yields for the same or similar types of borrowings, taking into account the underlying terms of the debt instruments. At June 30, 2015 and December 31, 2014, the estimated fair value exceeded the carrying value of the debt by $84 million and $416 million, respectively. A hypothetical 10% increase in interest rates (representing 38 basis points at June 30, 2015 and 45 basis points at December 31, 2014) would potentially reduce the estimated fair value of our debt by approximately $116 million and $108 million at June 30, 2015 and December 31, 2014, respectively.

Borrowings under our senior unsecured revolving credit facility and our secured receivables credit facility are subject to variable interest rates. Interest on our secured receivables credit facility is based on rates that are intended to approximate commercial paper rates for highly rated issuers. Interest on our senior unsecured revolving credit facility is subject to a pricing schedule that can fluctuate based on changes in our credit ratings. As such, our borrowing cost under this credit arrangement

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will be subject to both fluctuations in interest rates and changes in our credit ratings. At June 30, 2015, the borrowing rates under these debt instruments were: for our senior unsecured revolving credit facility, LIBOR plus 1.125%; and for our secured receivables credit facility, 0.88%. At of June 30, 2015, the weighted average LIBOR was 0.2%. As of June 30, 2015, therewere $85 million of borrowings outstanding under our $525 million secured receivables credit facility and no borrowings outstanding under our $750 million senior unsecured revolving credit facility.

The notional amount of fixed-to-variable interest rate swaps outstanding at both June 30, 2015 and December 31, 2014 was $1.2 billion. The aggregate fair value of the fixed-to-variable interest rate swaps that are in a liability position was $12 million at June 30, 2015. The aggregate fair value of the fixed-to-variable interest rate swaps that are in an asset position was $15 million at June 30, 2015. There were no forward starting interest rate swaps outstanding at June 30, 2015. The notional amount of forward starting interest rate swaps outstanding at December 31, 2014 was $150 million.

Based on our net exposure to interest rate changes, a hypothetical 10% change in interest rates on our variable rate indebtedness (representing 2 basis points) would not impact annual interest expense materially, assuming no changes to the debt outstanding at June 30, 2015. A hypothetical 10% change in interest rates (representing 20 basis points) would potentially change the fair value of our derivative liabilities by $8 million. A hypothetical 10% change in interest rates (representing 24 basis points) would potentially change the fair value of our derivative assets by $6 million.

For further details regarding our outstanding debt, see Note 9 to the interim unaudited consolidated financial statements and Note 13 to the consolidated financial statements included in our 2014 Annual Report on Form 10-K for the year ended December 31, 2014. For details regarding our financial instruments and hedging activities, see Note 10 to the interim unaudited consolidated financial statements and Note 14 to the consolidated financial statements included in our 2014 Annual Report 10-K for the year ended December 31, 2014.

Risk Associated with Investment Portfolio

Our investment portfolio includes equity investments comprised primarily of strategic equity holdings in privately and publicly held companies. These securities are exposed to price fluctuations and are generally concentrated in the life sciences industry. The carrying value of our equity investments was $18 million at June 30, 2015.

We regularly evaluate the fair value measurements of our equity investments to determine if losses in value are other than temporary and if an impairment loss has been incurred. The evaluation considers whether the security has the ability to recover and, if so, the estimated recovery period. Other factors that are considered in this evaluation include the amount of the other-than-temporary decline and its duration, the issuer’s financial condition and short-term prospects, and whether the market decline was caused by overall economic conditions or conditions specific to the individual security.

We do not hedge our equity price risk. The impact of an adverse movement in equity prices on our holdings in privately held companies cannot be easily quantified, as our ability to realize returns on investments depends on, among other things, the enterprises’ ability to raise additional capital or derive cash inflows from continuing operations or through liquidity events such as initial public offerings, mergers or private sales.

Liquidity and Capital Resources

	Six Months Ended June 30,
	2015			2014
	(dollars in millions)
Net cash provided by operating activities	$	327		$	364
Net cash used in investing activities	(123		)	(841		)
Net cash (used in) provided by financing activities	(246		)	434
Net change in cash and cash equivalents	$	(42	)	$	(43	)

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and highly liquid short-term investments. Cash and cash equivalents at June 30, 2015 totaled $150 million, compared to $192 million at December 31, 2014.

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Cash Flows from Operating Activities

Net cash provided by operating activities for the six months ended June 30, 2015 was $327 million compared to $364 million for the six months ended June 30, 2014. This $37 million decrease was primarily a result of $146 million of pre-tax cash charges associated with the early retirement of debtand higher performance based compensation payments, which were partially offset by improved operating performance and improved working capital through management of days sales outstanding. Days sales outstanding, a measure of billing and collection efficiency, was 44 days at June 30, 2015, 48 days at December 31, 2014 and 47 days at June 30, 2014.

Cash Flows from Investing Activities

Net cash used in investing activities for the six months ended June 30, 2015 was $123 million, compared to $841 million for the six months ended June 30, 2014. This $718 million decrease was a result of a $717 million decrease in business acquisitions, primarily a result of fewer acquisitions in 2015 as compared to 2014.

Cash Flows from Financing Activities

Net cash (used in) provided by financing activities for the six months ended June 30, 2015 was $(246) million, compared to $434 million for the six month ended June 30, 2014. This $680 million decrease was primarily a result of a $571 million decrease in net borrowings (proceeds from borrowings less repayments of debt), primarily associated with the funding of the Solstas acquisition in 2014, and a $92 million increase in repurchases of our common stock as discussed in "Share Repurchases" below.

Dividends

During the first and second quarters of 2015, our Board of Directors declared a quarterly cash dividend of $0.38 per common share. During each of the quarters of 2014, our Board of Directors declared a quarterly cash dividend of $0.33 per common share. We expect to fund future dividend payments with cash flows from operations and do not expect the dividend to have a material impact on our ability to finance future growth.

Share Repurchases

At June 30, 2015, $547 million remained available under our share repurchase authorizations. The share repurchase authorization has no set expiration or termination date.

For the three months ended June 30, 2015, we repurchased 0.6 million shares of our common stock at an average price of $72.03 per share for $39 million. For the six months ended June 30, 2015, we repurchased 2.1 million shares of our common stock at an average price of $71.62 per share for $149 million.

For the three months ended June 30, 2014, we repurchased 0.4 million shares of our common stock at an average price of $57.74 per share for $25 million. For the six months ended June 30, 2014, we repurchased 1.0 million shares of our common stock at an average price of $54.84 per share for $57 million.

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Contractual Obligations and Commitments

The following table summarizes certain of our contractual obligations as of June 30, 2015:

	Payments due by period
	(in millions)
Contractual Obligations	Total		Remainder of 2015		1-3 years		3-5 years		After 5 years
Outstanding debt	$	3,716	$	6	$	235	$	300	$	3,175
Capital lease obligations	28		6		15		6		1
Interest payments on outstanding debt	1,879		71		267		260		1,281
Operating leases	712		103		288		136		185
Purchase obligations	238		58		136		21		23
Merger consideration obligations	80		51		28		1		—
Total contractual obligations	$	6,653	$	295	$	969	$	724	$	4,665

Interest payments on our long-term debt have been calculated after giving effect to our interest rate swap agreements, using the interest rates as of June 30, 2015 applied to the June 30, 2015 balances, which are assumed to remain outstanding through their maturity dates.

A full description of the terms of our indebtedness and related debt service requirements and our future payments under certain of our contractual obligations is contained in Note 13 to the consolidated financial statements in our 2014 Annual Report on Form 10-K and Note 9 to the interim unaudited consolidated financial statements. A full discussion and analysis regarding our minimum rental commitments under noncancelable operating leases and noncancelable commitments to purchase product or services at December 31, 2014 is contained in Note 17 to the consolidated financial statements in our 2014 Annual Report on Form 10-K. Merger consideration obligation includes consideration owed, including any contingent consideration at maximum payout, on the UMass, Summit Health (see Note 7), and Steward acquisitions. A full discussion and analysis regarding our acquisitions of Summit Health, Steward and UMass and the related merger consideration obligations at December 31, 2014 is contained in Note 5 to the consolidated financial statements in our 2014 Annual Report on Form 10-K.

As of June 30, 2015, our total liabilities associated with unrecognized tax benefits were approximately $104 million, which were excluded from the table above. We expect that these liabilities may decrease by up to approximately $32 million within the next twelve months, primarily as a result of payments, settlements and/or the conclusion of tax examinations on certain tax positions. For the remainder, we cannot make reasonably reliable estimates of the timing of the future payments of these liabilities. Additionally, it is reasonably possible that within the next 12 months, as result of ongoing negotiations with tax authorities and the expiration of statutes of limitations, our total liabilities associated with unrecognized tax benefits will further decrease and beneficially impact the effective tax rate for continuing operations. However, due to the inherent uncertainty of the negotiations and the resulting outcomes, we are not able to estimate the effective tax rate impact at this time.  See Note 8 to the consolidated financial statements in our 2014 Annual Report on Form 10-K for information regarding our contingent tax liability reserves.

Our credit agreements contain various covenants and conditions, including the maintenance of certain financial ratios, that could impact our ability to, among other things, incur additional indebtedness. As of June 30, 2015, we were in compliance with the various financial covenants included in our credit agreements and we do not expect these covenants to adversely impact our ability to execute our growth strategy or conduct normal business operations.

Equity Method Investees

Our equity method investees primarily consist of unconsolidated joint ventures in Phoenix, Arizona; Indianapolis, Indiana; Dayton, Ohio; and an investment in an Australian company, which are accounted for under the equity method of accounting. We believe that our transactions with our equity method investees are conducted at arm’s length, reflecting current market conditions and pricing. Total net revenues of our equity method investees equal approximately 6% of our consolidated net revenues. Total assets associated with our equity method investees are less than 2% of our consolidated total assets. We have no material unconditional obligations or guarantees to, or in support of, our equity method investees and their operations.

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On July 1, 2015, Q² Solutions, our joint venture with Quintiles, will become an equity method investee. See "Assets Held for Sale" above for further details.

Requirements and Capital Resources

We estimate that we will invest approximately $300 million during 2015 for capital expenditures, to support and grow our existing operations, principally related to investments in information technology, laboratory equipment and facilities, including specific initiatives associated with our Invigorate and other programs.

We expect to fund the repayment of the current portion of our long-term debt using a combination of cash on hand and existing credit facilities.

As of June 30, 2015, $1.2 billion of borrowing capacity was available under our existing credit facilities consisting of $440 million available under our secured receivables credit facility and $750 million available under our senior unsecured revolving credit facility.

We believe the borrowing capacity under the credit facilities described above continues to be available to us. Should one or several banks no longer participate in either of our credit facilities, we would not expect it to impact our ability to fund operations. We expect that we will be able to replace our existing credit facilities with alternative arrangements prior to their expiration.

At June 30, 2015, approximately 50% of our $150 million of consolidated cash and cash equivalents were held outside of the United States. These funds are considered indefinitely reinvested to be used to expand operations either organically or through acquisitions outside the United States. Further, our current plans do not demonstrate a need to repatriate foreign funds in order to fund U.S. operations. If the foreign cash and cash items are needed for operations in the United States, or we otherwise elect to repatriate the funds, we may be required to accrue and pay United States taxes on a significant portion of these amounts.

We believe that our cash and cash equivalents and cash from operations, together with our borrowing capacity under our credit facilities, will provide sufficient financial flexibility to fund seasonal and other working capital requirements, capital expenditures, debt service requirements and other obligations, cash dividends on common shares, share repurchases and additional growth opportunities for the foreseeable future. We believe that our credit profile should provide us with access to additional financing to refinance upcoming debt maturities and, if necessary, to fund growth opportunities that cannot be funded from existing sources.

Recent Accounting Pronouncements Not Yet Effective

The impacts of recent accounting pronouncements not yet effective on our consolidated financial statements are discussed in Note 2 to the interim unaudited consolidated financial statements.

Forward-Looking Statements

Some statements and disclosures in this document are forward-looking statements. Forward-looking statements include all statements that do not relate solely to historical or current facts and can be identified by the use of words such as “may,” “believe,” “will,” “expect,” “project,” “estimate,” “anticipate,” “plan” or “continue.” These forward-looking statements are based on our current plans and expectations and are subject to a number of risks and uncertainties that could cause our plans and expectations, including actual results, to differ materially from the forward-looking statements. Risks and uncertainties that may affect our future results include, but are not limited to, adverse results from pending or future government investigations, lawsuits or private actions, the competitive environment, changes in government regulations, changing relationships with customers, payers, suppliers and strategic partners and other factors discussed in “Business,” “Risk Factors,” “Cautionary Factors That May Affect Future Results,” “Legal Proceedings,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and “Quantitative and Qualitative Disclosures About Market Risk” in our 2014 Annual Report on Form 10-K and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Quantitative and Qualitative Disclosures About Market Risk” in our 2015 Quarterly Reports on Form 10-Q and other items throughout the 2014 Form 10-K and our 2015 Quarterly Reports on Form 10-Q and Current Reports on Form 8-K.

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Item 3.    Quantitative and Qualitative Disclosures About Market Risk

See Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations."

Item 4.    Controls and Procedures

Under the supervision and with the participation of our management, including our Chief Executive Officer and our Chief Financial Officer, we have evaluated the effectiveness of our disclosure controls and procedures (as defined under Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended). Based upon that evaluation, our Chief Executive Officer and our Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this quarterly report.

During the second quarter of 2015, there were no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934, as amended) that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II - OTHER INFORMATION

Item 1.    Legal Proceedings

See Note 13 to the interim unaudited consolidated financial statements for information regarding the status of legal proceedings involving the Company.

Item 2.    Unregistered Sales of Equity Securities and Use of Proceeds

The table below sets forth the information with respect to purchases made by or on behalf of the Company of its common stock during the second quarter of 2015.

ISSUER PURCHASES OF EQUITY SECURITIES
Period	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (in thousands)
April 1, 2015 – April 30, 2015
Share Repurchase Program (A)	26,319	$	75.23	26,319	$	583,627
Employee Transactions (B)	401	$	76.18	N/A	N/A
May 1, 2015 – May 31, 2015
Share Repurchase Program (A)	508,073	$	71.86	508,073	$	547,115
Employee Transactions (B)	10,756	$	72.83	N/A	N/A
June 1, 2015 – June 30, 2015
Share Repurchase Program (A)	—	$	—	—	$	547,115
Employee Transactions (B)	28	$	73.79	N/A	N/A
Total
Share Repurchase Program (A)	534,392	$	72.03	534,392	$	547,115
Employee Transactions (B)	11,185	$	72.96	N/A	N/A

(A) Since the share repurchase program’s inception in May 2003, our Board of Directors has authorized $6.5 billion of share repurchases of our common stock through June 30, 2015. The share repurchase authorization has no set expiration or termination date.

(B) Includes: (1) shares delivered or attested to in satisfaction of the exercise price and/or tax withholding obligations by holders of stock options (granted under the Company’s Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan, collectively the “Stock Compensation Plans”) who exercised options; and (2) shares withheld (under the terms of grants under the Stock Compensation Plans) to offset tax withholding obligations that occur upon the delivery of common shares underlying restricted stock units and performance share units.

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Item 6. Exhibits

Exhibits:

10.1	Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan (As amended May 15, 2015)
10.2	Amended and Restated Employee Stock Purchase Plan (Effective as of June 29, 2015)
31.1	Rule 13a-14(a) Certification of Chief Executive Officer
31.2	Rule 13a-14(a) Certification of Chief Financial Officer
32.1	Section 1350 Certification of Chief Executive Officer
32.2	Section 1350 Certification of Chief Financial Officer
101.INS	dgx-20150630.xml
101.SCH	dgx-20150630.xsd
101.CAL	dgx-20150630_cal.xml
101.DEF	dgx-20150630_def.xml
101.LAB	dgx-20150630_lab.xml
101.PRE	dgx-20150630_pre.xml

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Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

July 30, 2015

Quest Diagnostics Incorporated

By	/s/ Stephen H. Rusckowski
	Stephen H. Rusckowski
	President and Chief Executive Officer
By	/s/ Mark J. Guinan
	Mark J. Guinan
	Senior Vice President and Chief Financial Officer

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EX-10.1

Exhibit 10.1

Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan

(As amended May 15, 2015)

1. THE PLAN

(a) Purpose. This Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan (the “Plan”) is intended to benefit the stockholders of Quest Diagnostics Incorporated (the “Company”) by providing a means to attract, retain and reward individuals who can and do contribute to the longer term financial success of the Company. Further, the recipients of stock-based awards under the Plan should identify their success with that of the Company’s stockholders and therefore will be encouraged to increase their proprietary interest in the Company.

(b) Effective Date. The original version of the Plan became effective upon its approval by the holders of stock entitled to vote at the Company’s 2005 Annual Meeting of Stockholders (the “Effective Date”).

2. ADMINISTRATION

(a) General. The Plan shall be administered by an administrator (the “Administrator”) which shall be: (i) in the case of employees that are not executive officers, either the Board of Directors of the Company (the “Board”) or a committee appointed by the Board; or (ii) in the case of employees that are executive officers, a committee appointed by the Board consisting of no less than two of its members, none of whom shall be (or formerly have been) an employee of the Company; provided, however, that, in the case of employees that are not executive officers, notwithstanding any such appointment, from time to time the Board may assume, at its sole discretion, full or partial responsibility for administration of the Plan. In addition, the Board may delegate to a committee consisting of one or more of its members (including any member who is a current or former officer or other employee of the Company) authority concurrent with that of the Administrator to take the actions described in Section 2(b) (any such committee being referred to, collectively with the Administrator, as the “Committee”). Except with regard to awards to employees subject to Section 16 of the Securities Exchange Act of 1934, the Administrator may delegate such responsibilities and powers as it specifies to one or more of its members or to any officer or officers selected by it. Any action undertaken by any such delegee in accordance with the Administrator’s delegation of authority shall have the same force and effect as if undertaken directly by the Administrator. Any such delegation may be revoked by the Administrator at any time.

(b) Award granting authority. The Committee shall have power and authority to:

(i) select individuals (other than executive officers) to receive awards from among those persons eligible to receive awards pursuant to Section 2(d);

(ii) determine the types and terms and conditions of all awards granted, including performance and other earnout and/or vesting conditions and the consequences of termination of employment; and

(iii) determine the extent to which awards may be transferred to eligible third parties to the extent provided in Section 7(a).

(c) Administrative authority. In addition to the powers and authorities described in Section 2(b), the Administrator’s power and authority shall include, but not be limited to, interpreting the provisions of the Plan and awards under the Plan and administering the Plan in a manner that is consistent with its purpose. The Administrator’s determinations under the Plan need not be uniform and may be made by it selectively among persons who receive, or are eligible to receive, awards under the Plan (whether or not such persons are similarly situated). The Administrator’s decision in carrying out the Plan and its interpretation and construction of any provisions of the Plan or any award granted or agreement or other instrument executed under it shall be final and binding upon all persons. No members of the Board, the Committee or the Administrator shall be liable for any action, omission or determination made in good faith in administering the Plan or in making, or refraining from making, awards hereunder.

(d) Eligible Persons. Awards may be granted to any employee of the Company or of (i) any corporation (or a partnership or other enterprise) in which the Company owns or controls, directly or indirectly, 50% or more of the

outstanding shares of stock normally entitled to vote for the election of directors (or comparable equity participation and voting power) or (ii) any other corporation (or partnership or other enterprise) in which the Company, directly or indirectly, has at least a 20% equity or similar interest and whose employees the Administrator designates as eligible to receive awards under the Plan. An individual’s status as an administrator of the Plan pursuant to authority delegated under Section 2(a) will not affect his or her eligibility to receive awards under the Plan.

(e) Award Prices. Except for awards made in connection with the assumption of, or in substitution for, outstanding awards previously granted by an acquired entity (“Substitute Awards”), all awards denominated or made in Shares shall use as the per Share price an amount equal to or greater than the Fair Market Value (as defined herein) of the Shares on the date of grant. For purposes of the Plan, “Fair Market Value” means, unless the Administrator determines otherwise, the mean of the high and low selling prices of a share of the Common Stock of the Company (“Share”) on the New York Stock Exchange Composite list (or such other stock exchange as shall be the principal public trading market for the Shares) on the date the award is granted, or if Shares are not traded on such date, the mean of the high and low selling prices on the New York Stock Exchange Composite list (or such other stock exchange as shall be the principal public trading market for the Shares) on the next preceding day on which such Shares were traded. With respect to Substitute Awards, the per Share price, if less than the Fair Market Value of the Shares on the date of the award, shall be determined so that the excess of the aggregate intrinsic value of the Substitute Award, determined immediately after the transaction giving rise to the substitution or assumption of the predecessor award, does not exceed the aggregate intrinsic value of such predecessor award, determined immediately before such transaction, and such substitution complies with applicable laws and regulations, including the listing requirements of the New York Stock Exchange or other principal stock exchange on which the Shares are then listed and Section 409A or Section 424 of the Internal Revenue Code (the “Code”), as applicable.

(f) No Repricing. Except as provided for in Section 3(f), the per Share exercise price of any stock option or stock appreciation right may not be decreased after the grant of the award, and a stock option or stock appreciation right may not be surrendered as consideration in exchange for cash, the grant of a new stock option or stock appreciation right with a lower per Share exercise price or the grant of a stock award, without stockholder approval.

(g) Minimum Vesting Requirement. The vesting schedule applicable to an award under the Plan shall not provide for vesting in full prior to the first anniversary of the date of grant of the award, except in the case of a Substitute Award made in replacement of an award that is already fully vested or scheduled to vest in full in less than one year from the date of grant of such Substitute Award. Notwithstanding the foregoing, up to 5% of the shares of Common Stock authorized for issuance under the Plan pursuant to Section 3(a) (as it may be adjusted pursuant to Section 3(f)) may be granted pursuant to awards that provide for vesting in full less than one year following the date of grant.

3. SHARES SUBJECT TO THE PLAN AND ADJUSTMENTS

(a) Maximum Shares Available for Delivery. Subject to adjustments under Section 3(f), the maximum number of Shares that may be delivered to participants and their beneficiaries in respect of awards made under the Plan after February 23, 2015 shall be equal to 12,176,753 Shares. For awards made on or after the date of the Company’s 2012 annual meeting of stockholders, any Shares covered by awards granted pursuant to Section 4(b) or Section 4(c) shall be counted against the foregoing limit on the basis of one Share for every Share subject to the award, and any Shares covered by awards granted pursuant to Section 4(d) shall be counted against such limit on the basis of 2.65 Shares for every Share subject to the award.

(b) Any Shares delivered under the Plan which are forfeited back to the Company because of the failure to meet an award contingency or condition shall again be available for delivery pursuant to new awards granted under the Plan. Any Shares covered by an award (or portion of an award) granted under the Plan of the Company, which is forfeited or canceled, expires or is settled in cash, shall be deemed not to have been delivered for purposes of determining the maximum number of Shares available for delivery under the Plan. Any Shares that become available for delivery under the Plan pursuant to the two preceding sentences and that were subject to awards made on or after the date of the Company’s 2012 annual meeting of stockholders shall be added back as one Share if such Shares were subject to an award granted pursuant to Section 4(b) or Section 4(c), and as 2.65 Shares if such Shares were subject to an award granted pursuant to Section 4(d). For purposes of determining the number of shares that remain available for issuance under the Plan, (i) any Shares that are tendered by a participant or withheld by the Company to pay the exercise price of an award or to satisfy the participant’s tax withholding obligations in connection with the exercise or settlement of an award and (ii) all of the Shares covered

by a net share-settled stock option or a stock-settled stock appreciation right to the extent exercised, shall be deemed delivered pursuant to the Plan and shall not be available for delivery pursuant to new awards under the Plan. In addition, Shares repurchased on the open market with the proceeds of the exercise price of an award shall not be added to the number of Shares available for delivery pursuant to new awards under the Plan. The Shares delivered under the Plan may be authorized and unissued shares or shares held in the treasury of the Company, including shares purchased by the Company (at such time or times and in such manner as it may determine).

(c) Substitute Awards. Shares issued under the Plan through the settlement, assumption or substitution of Substitute Awards or, to the extent permitted by the rules of the New York Stock Exchange (or other stock exchange as shall be the principal public trading market for the Shares), awards granted over Shares available as a result of the Company’s assumption of an acquired entity’s plans in corporate acquisitions and mergers shall not reduce the maximum number of Shares available for delivery under the Plan or the maximum number of Shares that may be delivered in conjunction with awards granted pursuant to Section 4(d).

(d) Other Plan Limits. Subject to adjustment under Section 3(f), the following additional maximums are imposed under the Plan. The maximum aggregate number of Shares that may be covered by awards granted to any one individual during any fiscal year of the Company pursuant to Sections 4(b) and 4(c) shall not exceed 2,000,000 Shares. The aggregate maximum payments that can be made for awards granted to any one individual pursuant to Section 4(d) on or after the Effective Date shall not exceed 1,000,000 Shares. The full number of Shares available for delivery under the Plan may be delivered pursuant to incentive stock options under Section 422 or any other similar provision of the Code, except that in calculating the number of Shares that remain available for awards of incentive stock options, the rules set forth in Section 3(a) shall not apply to the extent not permitted by Section 422 of the Code.

(e) Payment Shares. Subject to the overall limitation on the number of Shares that may be delivered under the Plan, available Shares may be used as the form of payment for compensation, grants or rights earned or due under any other compensation plans or arrangements of the Company.

(f) Adjustments for Corporate Transactions. In the event of any stock split, reverse stock split, stock dividend, recapitalization, reorganization, merger, demerger, consolidation, split-up, spin-off, combination or exchange of shares, or any similar change affecting the Shares, or in the event the Company pays an extraordinary cash dividend, (i) the number and kind of shares which may be delivered under the Plan pursuant to Sections 3(a) and 3(d); (ii) the number and kind of shares subject to outstanding awards; and (iii) the exercise price of outstanding stock options and stock appreciation rights shall be appropriately adjusted consistent with such change in such manner as the Administrator may deem equitable to prevent substantial dilution or enlargement of the right granted to, or available for, participants in the Plan; provided, however, that no such adjustment shall be required if the Administrator determines that such action could cause a stock option or stock appreciation right to fail to satisfy the conditions of an applicable exception from the requirements of Section 409A of the Internal Revenue Code (“Section 409A”) or otherwise could subject a participant to any interest or additional tax imposed under Section 409A in respect of an outstanding award. Similar adjustments may be made in situations where the Company assumes or substitutes for outstanding awards held by employees and other persons of an entity acquired by the Company.

4. TYPES OF AWARDS

(a) General. An award may be granted singularly, in combination with another award(s) or in tandem whereby exercise or vesting of one award held by a participant cancels another award held by the participant. Subject to the limitations of Section 2(e), an award may be granted as an alternative or successor to or replacement of an existing award under the Plan or under any other compensation plan or arrangement of the Company, including the plan of any entity acquired by the Company. The types of awards that may be granted under the Plan include:

(b) Stock Option. A stock option represents a right to purchase a specified number of Shares during a specified period at a price per Share which is no less than one hundred percent (100%) of the Fair Market Value of a Share on the date of the award. A stock option may be intended to qualify as an incentive stock option under Section 422 or any other similar provision of the Code or may be intended not to so qualify. Each stock option granted on or after the Effective Date shall expire on the applicable date designated by the Committee but in no event may such date be more than ten years from the date the stock option is granted. The Shares covered by a stock option may be purchased by means of a cash payment or such other means as the Administrator may from time-to-time permit,

including (i) tendering (either actually or by attestation) Shares valued using the market price on the date of exercise, (ii) authorizing a third party to sell Shares (or a sufficient portion thereof) acquired upon exercise of a stock option and to remit to the Company a sufficient portion of the sale proceeds to pay for all the Shares acquired through such exercise and any tax withholding obligations resulting from such exercise; (iii) a net share settlement procedure or through the withholding of Shares subject to the stock option valued using the market price on the date of exercise; or (iv) any combination of the above.

(c) Stock Appreciation Right. A stock appreciation right is a right to receive a payment in cash, Shares or a combination thereof, equal to the excess of the aggregate market price on the date of exercise of a specified number of Shares over the aggregate exercise price of the stock appreciation right being exercised. The longest period during which a stock appreciation right granted on or after the Effective Date may be outstanding shall be ten years from the date the stock appreciation right is granted. The exercise price of a stock appreciation right shall be no less than one hundred percent (100%) of the Fair Market Value of a Share on the date of the award.

(d) Stock Award. A stock award is a grant of Shares or of a right to receive Shares (or their cash equivalent or a combination of both) in the future. Each stock award shall be earned and vest over such period and shall be governed by such conditions, restrictions and contingencies as the Committee shall determine. These may include continuous service and/or the achievement of performance goals. The performance goals that may be used by the Committee for stock awards intended to qualify as “performance-based compensation” for purposes of Section 162(m) of the Code shall consist of one or more of the following: operating profits (including EBITDA), net profits, earnings per share, profit returns and margins, revenues, cost/expense management, shareholder return and/or value, stock price, return on invested capital, cash flow, customer attrition, productivity, workforce diversity, employee satisfaction, individual executive performance, customer service and quality metrics. Performance goals may be measured solely on a corporate, subsidiary or business unit basis, or a combination thereof. Further, performance criteria may reflect absolute entity performance or a relative comparison of entity performance to the performance of a peer group of entities or other external measure of the selected performance criteria. Profit, earnings and revenues used for any performance goal measurement may exclude: gains or losses on operating asset sales or dispositions; asset write-downs; litigation or claim judgments or settlements; accruals for historic environmental obligations; effect of changes in tax law or rate on deferred tax assets and liabilities; accruals for reorganization and restructuring programs; uninsured catastrophic property losses; the effect of changes in accounting standards; the cumulative effect of changes in accounting principles; the effect of dispositions of companies or businesses; charges related to the acquisition and integration of companies or businesses; and any items excluded from the calculation of ordinary income (or loss) determined in accordance with generally accepted accounting principles (which may include, without limitation, extraordinary items or significant unusual or infrequently occurring items) and/or described in management’s discussion and analysis of financial performance appearing in the Company’s annual report to stockholders for the applicable year.

5. AWARD SETTLEMENTS AND PAYMENTS

(a) Dividends and Dividend Equivalents. Awards of stock options and stock appreciation rights shall not include any right to receive dividends or dividend equivalent payments in respect of Shares underlying the award; provided, however, that Shares delivered upon exercise of stock options and stock appreciation rights shall, from the date of delivery, have the same dividend rights as other outstanding Shares. A stock award pursuant to Section 4(d) may include the right to receive dividends or dividend equivalent payments which may be paid either currently or credited to a participant’s account. Any such crediting of dividends or dividend equivalents may be subject to such conditions, restrictions and contingencies as the Committee shall establish, including vesting conditions and the reinvestment of such credited amounts in Share equivalents, and, in the case of any award subject to the achievement of performance goals, such dividends or dividend equivalents shall be paid only if, and to the extent that, such performance goals are satisfied.

(b) Payments. Awards may be settled through cash payments, the delivery of Shares, the granting of awards or combination thereof as the Committee shall determine. Any award settlement, including payment deferrals, may be subject to such conditions, restrictions and contingencies as the Committee shall determine. The Committee may permit or require the deferral of any award payment, subject to such rules and procedures as it may establish, which may include provisions for the payment or crediting of interest, or dividend equivalents, including converting such credits into deferred Share equivalents. It is intended that any such settlement or deferral shall be implemented in a manner and this Plan shall be interpreted and administered so as to comply with Section 409A and any applicable guidance issued thereunder in order to avoid the imposition of any interest or additional tax on an employee under Section 409A in respect of any award.

(c) Effect of Termination of Employment. The applicable award agreement shall provide for the extent to which a participant shall vest in or forfeit an award following the participant’s termination of employment and, with respect to stock options and stock appreciation rights, the extent to which a participant shall have the right to exercise the stock option or stock appreciation right following termination of employment. Such provisions shall be determined by the Administrator in its sole discretion, need not be uniform among all award agreements, and may reflect distinctions based on the reasons for termination.

6. PLAN AMENDMENT AND TERMINATION

(a) Amendments. The Board may amend this Plan and the Administrator may amend any outstanding award in such manner as it deems necessary and appropriate to better achieve the Plan’s purpose; provided, however, that (i) except as provided in Section 3(f), (a) the Share and other award limitations set forth in Sections 3(a) and 3(d) cannot be increased and (b) the minimum stock option and stock appreciation right exercise prices set forth in Sections 2(e), 4(b) and 4(c) cannot be changed unless such a plan amendment is properly approved by the Company’s stockholders, and (ii) no such amendment shall, without a participant’s consent, materially adversely affect a participant’s rights with respect to any outstanding award. Notwithstanding the foregoing, no action taken by the Administrator (x) to settle or adjust an outstanding award pursuant to Section 3(f) or (y) to modify an outstanding award to avoid, in the reasonable, good faith judgment of the Company, the imposition on any participant of any tax, interest or penalty under Section 409A, shall require the consent of any participant.

(b) Plan Suspension and Termination. The Board may suspend or terminate this Plan at any time. However, in no event may any awards be granted under the Plan after the date of the 2022 Annual Meeting of Stockholders. Any such suspension or termination shall not of itself impair any outstanding award granted under the Plan or the applicable participant’s rights regarding such award.

7. CHANGE IN CONTROL

(a) Committee Determinations. Notwithstanding any provisions of this Plan to the contrary, the Committee may, in its sole discretion, at the time an award is made hereunder or at any time prior to, coincident with or after the time of a Change in Control (as hereinafter defined):

(i) provide for the adjustment of any performance conditions as the Committee deems necessary or appropriate to reflect the Change in Control;

(ii) provide that upon termination of a participant’s employment as a result of the Change in Control, any time periods or other conditions relating to the vesting, exercise, payment or distribution of an award will be accelerated or waived;

(iii) provide for the purchase of any awards from a participant whose employment has been terminated as a result of a Change in Control for an amount of cash equal to the amount that could have been obtained upon the exercise, payment or distribution of such rights had such award been currently exercisable or payable; or

(iv) cause the awards outstanding at the time of a Change in Control to be assumed, or new rights substituted therefore, by the surviving entity or acquiring entity in the transaction (or the surviving or acquiring entity’s parent company) or, if the Company is not the surviving entity following the Change in Control and the surviving or acquiring entity (or its parent company) does not agree to assume the Company’s obligations with respect to any awards under the Plan or to replace those awards with new rights of substantially equivalent value (as determined by the Committee), to cause such awards to vest immediately prior to the Change in Control in such a manner that will enable the participant to participate in the Change in Control with respect to the shares issuable upon vesting, exercise, payment or distribution of such awards on the same basis as other holders of the Company’s outstanding Common Stock.

For purposes of sub-paragraphs (ii) or (iii) above, any participant whose employment is terminated by the Company (including any surviving entity or successor to the Company following a Change in Control) other than for “cause,” or by the participant for “good reason” (each as defined in the applicable award agreement), upon or within two years following a Change in Control shall be deemed to have been terminated as a result of the Change in Control. Notwithstanding any other provisions of the Plan or an award agreement to the contrary, the vesting, payment, purchase or distribution of an award may not be accelerated by reason of a Change of Control for any participant unless the Participant’s employment terminates as a result of the Change of Control.

(b) Definition. A “Change in Control” shall be deemed to occur if and when:

(i) Any person (as such term is used in Sections 13(d) and 14(d)(2) of the Securities Exchange Act of 1934) is or becomes the beneficial owner, directly or indirectly, of securities of the Company representing 40% or more of the combined voting power of the Company’s then outstanding securities; or

(ii) The individuals who, as of the date of grant, constituted the Company’s Board of Directors (the “Incumbent Board”) cease for any reason to constitute at least a majority of the Board; provided, however, that any individual (other than any individual whose initial assumption of office is in connection with an actual or threatened election contest (as such term is used in Rule 14a-11 of Regulation 14A promulgated under the Securities Exchange Act of 1934)) becoming a director subsequent to the date of grant of an award, whose election, or nomination for election by the stockholders of the Company, was approved by a vote of at least a majority of the directors then comprising the Incumbent Board, shall be considered as though such individual was a member of the Incumbent Board; or

(iii) The Company consummates any of the following transactions that are required to be approved by shareholders: (a) a transaction in which the Company ceases to be an independent publicly owned corporation, or (b) the sale or other disposition of all or substantially all of the Company’s assets, or (c) a plan of partial or complete liquidation of the Company.

8. MISCELLANEOUS

(a) Assignability. No Award granted under the Plan shall be transferable, whether voluntarily or involuntarily, other than by will or by the laws of descent and distribution; provided, however, that the Committee may permit transfers as gifts to family members or to trusts or other entities for the benefit of one or more family members on such terms and conditions as it shall determine; and, provided, further, that unless permitted by applicable regulations under the Code or other Internal Revenue Service guidance, the Committee may not permit any such transfers of incentive stock options. During the lifetime of a participant to whom incentive stock options were awarded, such incentive stock options shall be exercisable only by the participant.

(b) No Individual Rights. The Plan does not confer on any person any claim or right to be granted an award under the Plan. Neither the Plan nor any action taken hereunder shall be construed as giving any employee or other person any right to continue to be employed by or to perform services for the Company, any subsidiary or related entity. The right to terminate the employment of or performance of services by any Plan participant at any time and for any reason is specifically reserved to the employing entity.

(c) Unfunded Plan. The Plan shall be unfunded and shall not create (or be construed to create) a trust or a separate fund or funds. The Plan shall not establish any fiduciary relationship between the Company and any participant or beneficiary of a participant. To the extent any person holds any obligation of the Company by virtue of an award granted under the Plan, such obligation shall merely constitute a general unsecured liability of the Company and accordingly shall not confer upon such person any right, title or interest in any assets of the Company.

(d) Use of Proceeds. Any proceeds from the sale of shares under the Plan shall constitute general funds of the Company.

(e) Other Benefit and Compensation Plans. Unless otherwise specifically determined by the Administrator, settlements of awards received by participants under the Plan shall not be deemed a part of a participant’s regular, recurring compensation for purposes of calculating payments or benefits from any Company benefit plan or severance Plan. Further, the Company may adopt any other compensation plans or arrangements as it deems appropriate.

(f) No Fractional Shares. Unless otherwise determined by the Administrator, no fractional Shares shall be issued or delivered pursuant to the Plan or any award, and the Administrator shall determine whether any fractional Share shall be rounded up or rounded down to the nearest whole Share, whether cash shall be paid or transferred in lieu of any fractional Shares, or whether such fractional Shares or any rights thereto shall be cancelled.

(g) Governing Law. The validity, construction and effect of the Plan and, except as otherwise determined by the Administrator, any award, agreement or other instrument issued under the Plan, shall be determined in accordance with the laws of the State of New Jersey applicable to contracts entered into and performed entirely within the State of New Jersey (without reference to its principles of conflicts of law).

EX-10.2

Exhibit 10.2

Amended and Restated Employee Stock Purchase Plan

(As approved by the stockholders on May 4, 2006 and as amended effective as of June 29, 2015)

The purpose of the Employee Stock Purchase Plan (the “Program”) of Quest Diagnostics Incorporated (the “Corporation”) is to provide to employees an ongoing opportunity to purchase shares of Common Stock of the Corporation, par value $0.01 per share (“Common Stock”). The Program became effective upon its approval by the holders of stock entitled to vote at the Corporation’s May 4, 2006 Annual Meeting of Stockholders and has subsequently been amended.

1.Administration. The Program will be administered by the Compensation Committee of the Board of Directors (the “Committee”). The Committee will have authority to (a) exercise all of the powers granted to it under the Program, (b) construe, interpret and implement the Program, (c) to prescribe, amend and rescind rules and regulations relating to the Program, including rules governing its own operations, (d) to make all determinations necessary or advisable in administering the Program and (e) to correct any defect, supply any omission and reconcile any inconsistency in the Program. The determination of the Committee on any matters relating to the Program shall be final, binding and conclusive. No member of the Committee shall be liable for any action or determination made in good faith with respect to the Program. To the extent permitted by applicable law, the Committee may delegate such responsibilities and powers as it specifies to any employee or employees selected by it. Any action undertaken by an administrator in accordance with the Committee’s delegation of authority shall have the same force and effect as if undertaken directly by the Committee. Any such delegation may be revoked by the Committee at any time.

2.Eligibility. Such groups of employees of the Corporation or any subsidiary or other entity as may from time to time be designated by the Committee (“Participating Entity”) will be eligible to participate in the Program, in accordance with such rules as may be prescribed from time to time by the Committee. No employee can participate in the Program if such employee would, immediately after participating in the Program, own stock possessing five percent or more of the total combined voting power or value of all classes of stock of the Corporation or of its parent or subsidiary corporations. A person may not participate in the Program unless such person is an “employee” as defined in the instructions to the Form S-8 registration statement under the Securities Act of 1933, as amended (or any successor form) as in effect from time to time.

3.Shares Subject to the Program. The total number of shares of Common Stock which may be delivered pursuant to the Program will be five million (5,000,000) shares of Common Stock in the aggregate. In the event of any stock split, reverse stock split, stock dividend, recapitalization, reorganization, merger, demerger, consolidation, split-up, spin-off, combination or exchange of shares, or any similar change affecting the Common Stock, or in the event the Company pays an extraordinary cash dividend: (i) the number and kind of shares which may be delivered under the Program; (ii) the number and kind of shares subject to outstanding Options (as hereinafter defined); and (iii) the exercise price of outstanding Options shall be appropriately adjusted consistent with such change in such manner as the Committee may deem equitable to prevent substantial dilution or enlargement of the right granted to, or available for, participants. Except as expressly provided herein, no issuance by the Corporation of shares of stock of any class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares of Common Stock subject to an Option. The Shares delivered under the Plan may be authorized and unissued shares or shares held in the treasury of the Corporation, including shares purchased by the Corporation (at such time or times and in such manner as it may determine).

4.Participation; Payroll Deductions.

(a)An eligible employee may participate in the Program by completing the enrollment process specified by the Corporation, including authorizing payroll deductions from the employee’s eligible compensation (as determined from time to time by the Committee). Payroll deductions authorized by a participating employee will be given effect as soon as practicable after completion of the enrollment process, but may not be retroactive.

(b)Unless otherwise determined by the Committee, an employee may authorize a payroll deduction at a rate, in whole percentages, of (X) not less than one percent (1%) of the eligible compensation that the employee receives during each payroll period and (Y) not greater than ten percent (10%) of the eligible compensation that the employee receives during each payroll period; provided, however, that employees participating in the Program on June 29 , 2015 shall not be subject to the limitation set forth in clause (X) until such time, if any, as they change the amount of their payroll deduction.

(c)Payroll deductions authorized under the Program shall be held by the Corporation as part of its general funds. All funds held by the Corporation under the Program may be used for any corporate purpose. Records will be maintained of the payroll deductions of each participating employee. Participating employees shall not be credited with, or entitled to receive, interest in respect of payroll deductions.

(d)A participating employee may at any time request to stop, increase or decrease his or her payroll deductions by completing a Corporation-specified process. These requests shall become effective as soon as practicable after completion of the process. A participating employee shall have no right to withdraw payroll deductions.

(e)If a participating employee ceases to participate in the Program for any reason (including, without limitation, leave of absence, Program ineligibility or termination of employment), then that participating employee’s uninvested payroll deductions shall be refunded as soon as practicable.

5.Offerings.

(a)Certain Definitions; Offering; Corporate Contribution

(1)The Corporation shall make on the last business day of each calendar month, or on such other date or dates as the Committee may determine, an offer to participating employees to purchase shares of Common Stock under the Program. Each date on which an offer is made is referred to as an “Offer Date.”

(2)The period beginning on the day following an Offer Date and continuing through (and including) the next Offer Date shall be an “Offer Period.”

(3)The payroll deductions for a participating employee made under the Program during an Offer Period shall be the “Employee Contribution” for that Offer Period.

(4)On each Offer Date, for each employee for which there is an Employee Contribution for the Offer Period ending on that Offer Date, the Corporation shall make a “Corporate Contribution” equal to 0.1765 multiplied by the Employee Contribution.

(5)For each participating employee as of any date, the sum of all Employee Contributions plus all Corporate Contributions that have not yet been invested in shares of Common Stock purchased under the Program shall be the participating employee’s “Program Credits” as of that date.

(6)“Market Price” means, unless the Committee determines otherwise, the closing price of a share of Common Stock on the New York Stock Exchange Composite list (or such other stock exchange as shall be the principal public trading market for the Common Stock) on the relevant date of determination or, if the Common Stock is not traded on such date, the closing price on the New York Stock Exchange Composite list (or such other stock exchange as shall be the principal public trading market for the Common Stock) on the next preceding day on which the Common Stock was traded.

(b) On any Offer Date, if a participating employee’s Program Credits are sufficient to purchase at least one whole share of Common Stock (based on the Market Price on the Offer Date), then that participating employee will be entitled to purchase Common Stock under the Program on that Offer Date and will be granted an option (an “Option”) to purchase as many shares of Common Stock as may be purchased with the participating employee’s Program Credits. The exercise price for each Option will be the Market Price on the Offer Date. The participating employee shall be deemed to have exercised the Option as of the Offer Date and shall acquire the Common Stock subject to the Option.

(c)If on an Offer Date a participating employee’s Program Credits are not sufficient to purchase at least one whole share of Common Stock (based on the Market Price on the Offer Date), then that participating employee will not be entitled to purchase Common Stock under the Program on that Offer Date, and the participating employee’s Program Credits will be applied to the purchase of Common Stock in accordance with Section 5(b) on the next Offer Date.

6.Common Stock Acquired Under Program. Common Stock purchased by a participating employee under the Program shall be held by a third party agent in an account established for the participating employee.

7.Certain Rights.

(a)A participating employee shall not have any of the rights or privileges of a stockholder of the Corporation with respect to shares purchased under the Program unless and until ownership of such shares shall have been appropriately evidenced on the Corporation’s books.

(b)Rights under the Program are not transferable by a participating employee other than by will or the laws of descent and distribution, and are exercisable during the participating employee’s lifetime only by the participating employee.

(c)Nothing in the Program shall confer upon any employee the right to continue in the employ of the Corporation or any Participating Entity or affect any right which the Corporation or any Participating Entity may have to terminate such employment.

8.Amendment; Termination.

(a)The Committee may at any time, or from time to time, amend or suspend the Program in any respect, including retroactively to the extent necessary; provided, however that no such action shall be made without shareholder approval if such approval is required under tax or stock exchange rules and regulations. Upon any such suspension or amendment of the Program, the Committee may in its discretion determine that all payroll deductions pending investment under the Program will be applied under a successor program, if any, or promptly refunded.

(b)The Program and all rights of employees under any offering hereunder shall terminate at the discretion of the Committee or on the day that participating employees become entitled to purchase a number of shares of Common Stock greater than the number of shares of Common Stock remaining available for purposes of the Program; provided, however, if the number of shares of Common Stock so purchasable is greater than the shares of Common Stock remaining available, the available shares of Common Stock shall be allocated by the Committee among such participating employees in such manner as it deems fair.

(c)No offering hereunder shall be made which shall extend beyond the date of the Corporation’s 2016 Annual Meeting of Stockholders or May 31, 2016, whichever is earlier. Upon termination of the Program all payroll deductions pending investment under the Program shall be applied under a successor program, if any, or promptly refunded.

9.Governmental Regulations. The Corporation’s obligation to sell and deliver shares of Common Stock under the Program is subject to the approval of any governmental authority required for the authorization, issuance, or sale of such stock.

10.Expenses. The Committee shall determine in its discretion the extent to which costs of administering and carrying out the Program, including the cost of maintaining participant accounts and costs (including brokerage fees) incurred in connection with transfers or sales of shares under the Program, will be borne by participating employees (including those whose employment has terminated).

11.Miscellaneous.

(a)As a condition to participation by an employee in the Program, the Corporation may withhold from any compensation to which the participating employee may be entitled all amounts necessary to satisfy all federal, state, city or other taxes required to be withheld in connection with the individual’s participation in the Program pursuant to any law or governmental regulation or ruling.

(b)The Program is not intended to qualify as an “employee stock purchase plan” within the meaning of Section 423(b) of the Internal Revenue Code, but is intended to meet the coverage and participation requirements of Sections 423(b)(3) and 423(b)(5) of the Internal Revenue Code and therefore to qualify as a “Stock Purchase Plan” within the meaning of Rule 16b-3 promulgated under the Securities Exchange Act of 1934.

12.Governing Law. The Program shall be interpreted, construed and administered in accordance with the laws of the State of New Jersey, without giving effect to principles of conflict of laws.

Annex I: Certain Supplemental Provisions

This Annex I to the Quest Diagnostics Incorporated Amended and Restated Employee Stock Purchase Plan sets forth supplemental terms and conditions applicable to (i) employees whose employment with the Corporation or another Participating Entity terminated (for any reason) on or prior to May 25, 2015 and (ii) employees and former employees whose accounts under the Program held securities of entities other than the Corporation.

1.    Rights on Retirement, Death, or Termination of Employment.

Following retirement or other termination of employment, a participant (or if the participant has died, the representative of the participant’s estate) may elect to have the shares of Common Stock held in the participant’s account under the Program: (i) transferred to a brokerage account designated by the participant; or (ii) sold and the proceeds remitted to the participant. If the Corporation does not receive a written election relating to the shares in a participant’s account from the participant within 60 days following the date the Corporation notifies the participant of the opportunity to make such election, the participant shall be deemed to have made the election provided for in clause (ii) of the preceding sentence; provided, however, that the Committee may in its discretion establish a different default procedure for participants who fail to make a timely election. This Part 1 of Annex 1 became effective as of May 25, 2015, including with respect to participants who have retired or whose employment has otherwise terminated prior to such date.

2.    Common Stock of Entities Other than the Corporation.

With respect to the shares of common stock or other securities of entities other than the Corporation held in accounts under the Program, a participant may elect to have the shares or other securities in the account: (i) delivered to the transfer agent for the issuer of such shares or other securities for the participant’s benefit; (ii) transferred to a brokerage account designated by the participant; or (iii) sold and the proceeds remitted to the participant. If the Corporation does not receive a written election relating to such shares or other securities in a participant’s account from the participant within 60 days following the date the Corporation notifies the participant of the opportunity to make such election, the participant shall be deemed to have made the election provided for in clause (iii) of the preceding sentence; provided, however, that the Committee may in its discretion establish a different default procedure for participants who fail to make a timely election. This Part 2 of Annex A became effective as of May 25, 2015.

EX-31.1

Exhibit 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Stephen H. Rusckowski, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Quest Diagnostics Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

July 30, 2015

By	/s/ Stephen H. Rusckowski
	Stephen H. Rusckowski
	President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark J. Guinan, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Quest Diagnostics Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

July 30, 2015

By	/s/ Mark J. Guinan
	Mark J. Guinan
	Senior Vice President and
	Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. § 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, the undersigned certifies that, to the best of my knowledge, the Quarterly Report on Form 10-Q for the period ended June 30, 2015 of Quest Diagnostics Incorporated, as being filed with the Securities and Exchange Commission concurrently herewith, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. § 78m or 78o(d)) and that the information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of Quest Diagnostics Incorporated.

Dated:	July 30, 2015	/s/ Stephen H. Rusckowski
		Stephen H. Rusckowski
		President and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. § 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. § 1350, the undersigned certifies that, to the best of my knowledge, the Quarterly Report on Form 10-Q for the period ended June 30, 2015 of Quest Diagnostics Incorporated, as being filed with the Securities and Exchange Commission concurrently herewith, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. § 78m or 78o(d)) and that the information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of Quest Diagnostics Incorporated.

Dated:	July 30, 2015	/s/ Mark J. Guinan
		Mark J. Guinan
		Senior Vice President and
		Chief Financial Officer

XML

FAIR VALUE MEASUREMENTS (Recognized Assets and Liabilities at Fair Value) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Apr. 18, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration			$ 26
Recurring Basis [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	$ 48	$ 49
Cash surrender value of life insurance policies	30	30
Available-for-sale equity securities	10	9
Total assets	103	106
Deferred compensation liabilities	84	85
Contingent consideration	3	17
Total liabilities	103	135
Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets / Liabilities, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	48	49
Cash surrender value of life insurance policies	0	0
Available-for-sale equity securities	10	9
Total assets	58	58
Deferred compensation liabilities	0	0
Contingent consideration	0	0
Total liabilities	0	0
Recurring Basis [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Cash surrender value of life insurance policies	30	30
Available-for-sale equity securities	0	0
Total assets	45	47
Deferred compensation liabilities	84	85
Contingent consideration	0	0
Total liabilities	96	113
Recurring Basis [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading securities	0	0
Cash surrender value of life insurance policies	0	0
Available-for-sale equity securities	0	0
Total assets	0	1
Deferred compensation liabilities	0	0
Contingent consideration	3	17
Total liabilities	7	22
Recurring Basis [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	15	17
Derivative instruments, liabilities	12	13
Recurring Basis [Member] | Interest Rate Swaps [Member] | Quoted Prices in Active Markets for Identical Assets / Liabilities, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	0	0
Derivative instruments, liabilities	0	0
Recurring Basis [Member] | Interest Rate Swaps [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	15	17
Derivative instruments, liabilities	12	13
Recurring Basis [Member] | Interest Rate Swaps [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset	0	0
Derivative instruments, liabilities	0	0
Recurring Basis [Member] | Call Option [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities	4	5
Recurring Basis [Member] | Call Option [Member] | Quoted Prices in Active Markets for Identical Assets / Liabilities, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities	0	0
Recurring Basis [Member] | Call Option [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities	0	0
Recurring Basis [Member] | Call Option [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities	$ 4	5
Recurring Basis [Member] | Put Option [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset		1
Recurring Basis [Member] | Put Option [Member] | Quoted Prices in Active Markets for Identical Assets / Liabilities, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset		0
Recurring Basis [Member] | Put Option [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset		0
Recurring Basis [Member] | Put Option [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative asset		1
Recurring Basis [Member] | Forward Starting Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities		15
Recurring Basis [Member] | Forward Starting Interest Rate Swaps [Member] | Quoted Prices in Active Markets for Identical Assets / Liabilities, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities		0
Recurring Basis [Member] | Forward Starting Interest Rate Swaps [Member] | Significant Other Observable Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities		15
Recurring Basis [Member] | Forward Starting Interest Rate Swaps [Member] | Significant Unobservable Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative instruments, liabilities		$ 0

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STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2015	Jun. 30, 2014
Stockholder's Equity Narrative [Details]
Dividends per common share	$ 0.38	$ 0.38	$ 0.33	$ 0.33	$ 0.33	$ 0.33	$ 0.76	$ 0.66
Share repurchase authorization remaining available	$ 547						$ 547
Treasury stock value acquired cost method							$ 149	$ 57
Reissuance of shares for employee benefit plan	0.4				0.4		1.2	0.8
Share Repurchases Open Market [Member]
Stockholder's Equity Narrative [Details]
Treasury stock shares acquired	0.6				0.4		2.1	1.0
Treasury stock acquired average cost per share	$ 72.03				$ 57.74		$ 71.62	$ 54.84
Treasury stock value acquired cost method	$ 39				$ 25		$ 149	$ 57

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FINANCIAL INSTRUMENTS (Summary of Notional Amounts) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
3.20% Senior Notes due April 2016 [Member]
Derivative [Line Items]
Debt instrument, interest rate	3.20%
Debt instrument, maturity date	Apr. 01, 2016
3.20% Senior Notes due April 2016 [Member] | Six-Month LIBOR [Member]
Derivative [Line Items]
Floating Rate	2.30%
4.75% Senior Notes due January 2020 [Member]
Derivative [Line Items]
Debt instrument, interest rate	4.75%
Debt instrument, maturity date	Jan. 30, 2020
4.75% Senior Notes due January 2020 [Member] | One-Month LIBOR [Member]
Derivative [Line Items]
Floating Rate	3.60%
4.70% Senior Notes due April 2021 [Member]
Derivative [Line Items]
Debt instrument, interest rate	4.70%
Debt instrument, maturity date	Apr. 01, 2021
4.70% Senior Notes due April 2021 [Member] | One-Month LIBOR [Member] | Minimum [Member]
Derivative [Line Items]
Floating Rate	2.45%
4.70% Senior Notes due April 2021 [Member] | One-Month LIBOR [Member] | Maximum [Member]
Derivative [Line Items]
Floating Rate	3.39%
4.25% Senior Notes due April 2024 [Member]
Derivative [Line Items]
Debt instrument, interest rate	4.25%
Debt instrument, maturity date	Apr. 01, 2024
4.25% Senior Notes due April 2024 [Member] | One-Month LIBOR [Member] | Minimum [Member]
Derivative [Line Items]
Floating Rate	1.54%
4.25% Senior Notes due April 2024 [Member] | One-Month LIBOR [Member] | Maximum [Member]
Derivative [Line Items]
Floating Rate	1.59%
3.50% Senior Notes due March 2025 [Member]
Derivative [Line Items]
Debt instrument, interest rate	3.50%	3.50%
Debt instrument, maturity date	Mar. 30, 2025
3.50% Senior Notes due March 2025 [Member] | One-Month LIBOR [Member]
Derivative [Line Items]
Floating Rate	1.44%
Fair Value Hedging [Member]
Derivative [Line Items]
Notional Amount	$ 1,200		$ 1,200
Fair Value Hedging [Member] | 3.20% Senior Notes due April 2016 [Member]
Derivative [Line Items]
Notional Amount	0		200
Fair Value Hedging [Member] | 4.75% Senior Notes due January 2020 [Member]
Derivative [Line Items]
Notional Amount	350		350
Fair Value Hedging [Member] | 4.70% Senior Notes due April 2021 [Member]
Derivative [Line Items]
Notional Amount	400		400
Fair Value Hedging [Member] | 4.25% Senior Notes due April 2024 [Member]
Derivative [Line Items]
Notional Amount	250		250
Fair Value Hedging [Member] | 3.50% Senior Notes due March 2025 [Member]
Derivative [Line Items]
Notional Amount	$ 200		$ 0

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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Basic and Diluted [Abstract]
Net income attributable to Quest Diagnostics	$ 118	$ 133	$ 179	$ 237
Less: Earnings allocated to participating securities	1		1	1
Earnings available to Quest Diagnostics' common stockholders - basic and diluted	$ 117	$ 133	$ 178	$ 236
Weighted average common shares outstanding - basic	144	144	144	144
Stock options and performance share units	1	1	1	1
Weighted average common shares outstanding - diluted	145	145	145	145
Basic (per share)	$ 0.82	$ 0.92	$ 1.24	$ 1.64
Diluted (per share)	$ 0.81	$ 0.92	$ 1.23	$ 1.63
Stock options and performance share units not included due to their antidilutive effect	2	3	2	4

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RESTRUCTURING ACTIVITIES (Tables)

6 Months Ended

Jun. 30, 2015

Restructuring and Related Activities [Abstract]

Schedule of Pre-Tax Restructuring and Integration Charges

The following table provides a summary of the Company's pre-tax restructuring charges associated with its Invigorate program and other restructuring activities for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Employee separation costs	$	6	$	6	$	21	$	14
Facility-related costs	—		3		—		4
Asset impairment charges	—		1		—		1
Total restructuring charges	$	6	$	10	$	21	$	19

Schedule of Activity of Restructuring Liability

The following table summarizes activity in the restructuring liability as of June 30, 2015:

	Employee Separation Costs			Facility-Related Costs			Total
Balance, December 31, 2014	$	18		$	11		$	29
Current period charges	21			—			21
Less:
Cash payments	(19		)	(3		)	(22		)
Other / adjustments	—			(3		)	(3		)
Balance, June 30, 2015	$	20		$	5		$	25

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Long-term Purchase Commitment [Line Items]
Line of credit	$ 85
Letters of credit outstanding, amount	67
Litigation reserves	16	$ 11
Self-insurance reserves	$ 116	$ 113
Line of Credit [Member]
Long-term Purchase Commitment [Line Items]
Debt instrument, maturity date	Nov. 17, 2015

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DEBT (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended
	Apr. 30, 2015	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2015
Debt Instrument [Line Items]
Unamortized discount			$ 17	$ 17
Other Income (Expense), Net [Member]
Debt Instrument [Line Items]
Pre tax losses on extinguishment of debt			$ 65	$ 144
2015 Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,200
Debt issuance cost		11
2.50% Senior Notes due March 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 300
Debt instrument, interest rate		2.50%
Unamortized discount		$ 1
3.50% Senior Notes due March 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 600
Debt instrument, interest rate		3.50%	3.50%	3.50%
4.70% Senior Notes due March 2045 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 300
Debt instrument, interest rate		4.70%
6.95% Senior Notes due July 2037 and 5.75% Senior Notes due January 2040 [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount		$ 250
6.95% Senior Notes Due 2037 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			6.95%	6.95%
Extinguishment of debt, amount		176
5.75% Senior Notes Due 2040 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			5.75%	5.75%
Extinguishment of debt, amount		$ 74
5.45% Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	5.45%		5.45%	5.45%
3.20% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	3.20%		3.20%	3.20%
Extinguishment of debt, amount	$ 150
6.40% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	6.40%		6.40%	6.40%

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ASSETS HELD FOR SALE (Details)	Jul. 01, 2015
Subsequent Event [Member] | Q² Solutions [Member]
Long Lived Assets Held-for-sale [Line Items]
Noncontrolling interest, ownership percentage	40.00%

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SUBSEQUENT EVENT (Details) - Jul. 01, 2015 - Subsequent Event [Member] - Subsidiaries [Member] - USD ($) $ in Millions	Total
Subsequent Event [Line Items]
Deferred consideration	$ 50
Cash received in connection with call option exercise price	$ 50
UMass [Member]
Subsequent Event [Line Items]
Noncontrolling interest acquired	18.90%

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FINANCIAL INSTRUMENTS (Summary of Fair Value of Derivatives) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Total Net Derivatives (Liabilities)	$ (1)	$ (15)
Designated as Hedging Instrument [Member]
Derivative [Line Items]
Liability Derivatives	12	28
Designated as Hedging Instrument [Member] | Other Assets [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Asset Derivatives	15	17
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Liability Derivatives	12	13
Designated as Hedging Instrument [Member] | Other Liabilities [Member] | Forward Contracts [Member]
Derivative [Line Items]
Liability Derivatives	0	15
Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member] | Put Option [Member]
Derivative [Line Items]
Asset Derivatives	0	1
Not Designated as Hedging Instrument [Member] | Accounts Payable and Accrued Liabilities [Member] | Call Option [Member]
Derivative [Line Items]
Liability Derivatives	$ 4	$ 5

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The interim unaudited consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of results of operations, comprehensive income, financial condition, cash flows and stockholders' equity for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s 2014 Annual Report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements as of December 31, 2014, but does not include all the disclosures required by accounting principles generally accepted in the United States (“GAAP”).

As a result of the early adoption of the accounting standard update (“ASU”) associated with classification of debt issuance costs, certain reclassifications have been made to the prior period financial statements to conform with the current period presentation. For further details regarding the impact of the ASU, see Adoption of New Accounting Standards.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Earnings Per Share

The Company's unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities.

Adoption of New Accounting Standards

On January 1, 2015, the Company adopted a new accounting standard issued by the Financial Accounting Standards Board ("FASB") related to the presentation and reporting of discontinued operations, including the disposals of components of an entity. The standard changes the criteria for reporting discontinued operations and requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations. The new standard also requires disclosure of the pre-tax income attributable to a disposal of a significant part of an organization that does not qualify for discontinued operations reporting. The impact of this standard on the Company’s results of operations, financial position, cash flows and disclosures will be assessed as part of any future disposal activity.

In April 2015, the FASB issued an ASU which requires that debt issuance costs be presented in the balance sheet as a direct reduction to the carrying amount of the associated debt liability, consistent with debt discounts. The Company adopted this standard in the second quarter of 2015, which has been applied retrospectively. Adoption of this standard has resulted in the reclassification of $20 million of unamortized debt issuance costs from other assets to a reduction of long-term debt on the consolidated balance sheet at December 31, 2014.    

New Accounting Pronouncements

In May 2014, the FASB issued an ASU on revenue recognition. This ASU outlines a single comprehensive model to use in accounting for revenue arising from contracts with customers. This standard supersedes existing revenue recognition requirements and eliminates most industry-specific guidance from GAAP. The core principle of the revenue recognition standard is to require an entity to recognize as revenue the amount that reflects the consideration to which it expects to be entitled in exchange for goods or services as it transfers control to its customers. The standard requires additional disclosures including those that are qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In July 2015, the FASB voted to defer the effective date of this ASU to the first quarter of 2018, with early adoption permitted beginning in the first quarter of 2017. The ASU can be applied using a full retrospective method or a modified retrospective method of adoption. The Company is currently assessing the impact of the adoption of this ASU on the Company’s results of operations, financial position and cash flows.

In February 2015, the FASB issued an ASU which makes targeted amendments to the current consolidation guidance for variable interest entities and limited partnerships and similar entities. The ASU is effective for the Company in the first quarter of 2016 with the option of using a full retrospective or a modified retrospective method. The Company does not expect the adoption of this standard to have a material impact on its results of operations, financial position, and cash flows.

In April 2015, the FASB issued an ASU which provides guidance in determining whether a cloud computing arrangement includes a software license.  If it is determined that a cloud computing arrangement does include a software license, the software element of the arrangement should be accounted for consistent with the acquisition of other software licenses.  If the arrangement does not include a software license, it should be accounted for as a service contract.  The ASU is effective for the Company in the first quarter of 2016 and can be applied prospectively to all arrangements entered into or materially modified after the effective date or retrospectively.  The Company does not expect the adoption of this ASU to have a material impact on its results of operations, financial position and cash flows.

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DEBT (Long-Term Debt) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Apr. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt	$ 3,736			$ 3,742
Debt issuance costs	(27)			(20)
Less: Current portion of long-term debt	168			518
Total long-term debt, net of current portion	3,568			3,224
5.45% Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0			500
Debt instrument, interest rate	5.45%	5.45%
Debt instrument, maturity date	Nov. 01, 2015
3.20% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 151			304
Debt instrument, interest rate	3.20%	3.20%
Debt instrument, maturity date	Apr. 01, 2016
6.40% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0			375
Debt instrument, interest rate	6.40%	6.40%
Debt instrument, maturity date	Jul. 01, 2017
2.70% Senior Notes due April 2019 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 300			300
Debt instrument, interest rate	2.70%
Debt instrument, maturity date	Apr. 01, 2019
4.75% Senior Notes due January 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 523			524
Debt instrument, interest rate	4.75%
Debt instrument, maturity date	Jan. 30, 2020
2.50% Senior Notes due March 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 299			0
Debt instrument, interest rate			2.50%
Debt instrument, maturity date	Mar. 30, 2020
4.70% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 550			549
Debt instrument, interest rate	4.70%
Debt instrument, maturity date	Apr. 01, 2021
4.25% Senior Notes due April 2024 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 309			311
Debt instrument, interest rate	4.25%
Debt instrument, maturity date	Apr. 01, 2024
3.50% Senior Notes due March 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 597			0
Debt instrument, interest rate	3.50%		3.50%
Debt instrument, maturity date	Mar. 30, 2025
6.95% Senior Notes Due 2037 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 247			421
Debt instrument, interest rate	6.95%
Debt instrument, maturity date	Jul. 01, 2037
5.75% Senior Notes Due 2040 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 368			439
Debt instrument, interest rate	5.75%
Debt instrument, maturity date	Jan. 30, 2040
4.70% Senior Notes due March 2045 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 300			0
Debt instrument, interest rate			4.70%
Debt instrument, maturity date	Mar. 30, 2045
Other Long-term Debt [Member]
Debt Instrument [Line Items]
Other	$ 34			39
Secured Receivables Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 85			$ 0
Debt instrument, interest rate	0.88%

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FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

A summary of the notional amounts of these interest rate swaps as of June 30, 2015 and December 31, 2014 is as follows:

		Notional Amount
Debt Instrument	Floating Rate Paid by the Company	June 30, 2015		December 31, 2014
3.20% Senior Notes due April 2016	Six-month LIBOR plus a 2.3% spread	$	—	$	200
4.75% Senior Notes due January 2020	One-month LIBOR plus a 3.6% spread	350		350
4.70% Senior Notes due April 2021	One-month LIBOR plus a 2.45% to 3.39% spread	400		400
4.25% Senior Notes due April 2024	One-month LIBOR plus a 1.54% to 1.59% spread	250		250
3.50% Senior Notes due March 2025	One-month LIBOR plus a 1.44% spread	200		—
		$	1,200	$	1,200

Schedule of the fair values of derivative instruments

A summary of the fair values of derivative instruments in the consolidated balance sheets is stated in the table below:

	June 30, 2015				December 31, 2014
	Balance Sheet Classification	Fair Value			Balance Sheet Classification	Fair Value
Derivatives Designated as Hedging Instruments
Asset Derivatives:
Interest rate swaps	Other assets	$	15		Other assets	$	17
Liability Derivatives:
Interest rate swaps	Other liabilities	12			Other liabilities	13
Forward starting interest rate swaps		—			Other liabilities	15
Total Liability Derivatives		12				28
Derivatives Not Designated as Hedging Instruments
Asset Derivatives:
Put option		—			Prepaid expenses and other current assets	1
Liability Derivatives:
Call option	Accounts payable and accrued expenses	4			Accounts payable and accrued expenses	5
Total Net Derivatives (Liabilities)		$	(1	)		$	(15	)

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DEBT (Tables)

6 Months Ended

Jun. 30, 2015

Debt Instruments [Abstract]

Long-term Debt

Long-term debt at June 30, 2015 and December 31, 2014 consisted of the following:

	June 30, 2015			December 31, 2014
Secured Receivables Credit Facility (0.88% at June 30, 2015)	$	85		$	—
5.45% Senior Notes due November 2015	—			500
3.20% Senior Notes due April 2016	151			304
6.40% Senior Notes due July 2017	—			375
2.70% Senior Notes due April 2019	300			300
4.75% Senior Notes due January 2020	523			524
2.50% Senior Notes due March 2020	299			—
4.70% Senior Notes due April 2021	550			549
4.25% Senior Notes due April 2024	309			311
3.50% Senior Notes due March 2025	597			—
6.95% Senior Notes due July 2037	247			421
5.75% Senior Notes due January 2040	368			439
4.70% Senior Notes due March 2045	300			—
Other	34			39
Debt issuance costs	(27		)	(20		)
Total long-term debt	3,736			3,742
Less: Current portion of long-term debt	168			518
Total long-term debt, net of current portion	$	3,568		$	3,224

Schedule of Maturities of Long-term Debt

As of June 30, 2015, long-term debt matures as follows:

Year Ending December 31,
Remainder of 2015	$	12
2016	244
2017	6
2018	4
2019	302
2020	801
Thereafter	2,375
Total maturities of long-term debt	3,744
Unamortized discount	(17		)
Debt issuance costs	(27		)
Fair value basis adjustments attributable to hedged debt	36
Total long-term debt	3,736
Less: Current portion of long-term debt	168
Total long-term debt, net of current portion	$	3,568

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DEBT (Maturities of Long-Term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Debt Instruments [Abstract]
Remainder of 2015	$ 12
2016	244
2017	6
2018	4
2019	302
2020	801
Thereafter	2,375
Total maturities of debt	3,744
Unamortized discount	(17)
Debt issuance costs	(27)	$ (20)
Fair value basis adjustments attributable to hedged debt	36
Total long-term debt	3,736	3,742
Less: Current portion of long-term debt	168	518
Total long-term debt, net of current portion	$ 3,568	$ 3,224

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SUPPLEMENTAL CASH FLOW & OTHER DATA (Tables)

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow and Other Data

Supplemental cash flow and other data for the three and six months ended June 30, 2015 and 2014 is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Depreciation expense	$	55		$	56		$	112		$	109
Amortization expense	20			25			41			47
Depreciation and amortization expense	$	75		$	81		$	153		$	156
Interest expense	$	(37	)	$	(42	)	$	(83	)	$	(82	)
Interest income	—			—			1			1
Interest expense, net	$	(37	)	$	(42	)	$	(82	)	$	(81	)
Interest paid	$	45		$	30		$	99		$	82
Income taxes paid	90			129			109			138
Assets acquired under capital leases	2			8			2			10
Accounts payable associated with capital expenditures	9			14			9			14
Dividends payable	$	55		$	48		$	55		$	48
Businesses acquired:
Fair value of assets acquired	$	2		$	199		$	2		$	845
Fair value of liabilities assumed	—			12			—			82
Fair value of net assets acquired	2			187			2			763
Merger consideration paid (payable), net	4			(30		)	4			(30		)
Cash paid for business acquisitions	6			157			6			733
Less: Cash acquired	—			1			—			10
Business acquisitions, net of cash acquired	$	6		$	156		$	6		$	723

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BUSINESS SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2015

Segment Reporting [Abstract]

Summary of Segment Reporting Information by Segment

The following table is a summary of segment information for the three and six months ended June 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 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. 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 June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net revenues:
DIS business	$	1,771		$	1,763		$	3,463		$	3,377
All other operating segments	154			139			301			271
Total net revenues	$	1,925		$	1,902		$	3,764		$	3,648
Operating earnings (loss):
DIS business	$	302		$	293		$	544		$	524
All other operating segments	30			22			56			40
General corporate activities	(31		)	(53		)	(71		)	(94		)
Total operating income	301			262			529			470
Non-operating expenses, net	(94		)	(33		)	(210		)	(65		)
Income before income taxes	207			229			319			405
Income tax expense	78			87			120			152
Net income	129			142			199			253
Less: Net income attributable to noncontrolling interests	11			9			20			16
Net income attributable to Quest Diagnostics	$	118		$	133		$	179		$	237

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DESCRIPTION OF BUSINESS

6 Months Ended

Jun. 30, 2015

Description of Business (Abstract)

DESCRIPTION OF BUSINESS

DESCRIPTION OF BUSINESS

Background

Quest Diagnostics Incorporated and its subsidiaries ("Quest Diagnostics" or the "Company") empower people to take action to improve health outcomes.  The Company uses its extensive database of clinical lab results to derive diagnostic insights that reveal new avenues to identify and treat disease, inspire healthy behaviors and improve healthcare management.  The Company's diagnostic information services business ("DIS") provides insights through clinical testing and related services to patients, physicians, hospitals, accountable care organizations ("ACOs"), integrated delivery networks ("IDNs"), health plans, employers and others. The Company offers the broadest access in the United States to diagnostic information services through its nationwide network of laboratories, Company-owned patient service centers and phlebotomists in physician offices. 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 Company provides interpretive consultation through the organization, with one of the largest medical and scientific staffs in the industry and hundreds of M.D.s and Ph.D.s, many of whom are recognized leaders in their fields. The Company's Diagnostic Solutions ("DS") businesses offer a variety of solutions for life insurers, healthcare providers and others. The Company is the leading provider of risk assessment services for the life insurance industry as well as a leading provider of central laboratory testing for clinical trials (see Note 6 regarding assets held for sale). The Company's diagnostics products business manufactures and markets diagnostic products. In addition, the Company offers healthcare organizations, clinicians and patients robust information technology solutions.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Unamortized debt issuance costs	$ 27	$ 20

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FAIR VALUE MEASUREMENTS (Reconciliation of Beginning and Ending Balances of Assets and Liabilities Unobservable Inputs) (Details) - Jun. 30, 2015 - Significant Unobservable Inputs, Level 3 [Member] - USD ($)	Total
Liabilities
Balance, December 31, 2014	$ 22,000,000
Settlements	(1,000,000)
Included in earnings	(14,000,000)
Balance, June 30, 2015	7,000,000
Call Option Derivative Liability [Member]
Liabilities
Balance, December 31, 2014	5,000,000
Settlements	0
Included in earnings	(1,000,000)
Balance, June 30, 2015	4,000,000
Contingent Consideration [Member]
Liabilities
Balance, December 31, 2014	17,000,000
Settlements	(1,000,000)
Included in earnings	(13,000,000)
Balance, June 30, 2015	3,000,000
Put Option Derivative Assets [Member]
Assets
Balance, December 31, 2014	1,000,000
Settlements	0
Included in earnings	(1,000,000)
Balance, June 30, 2015	$ 0

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net revenues	$ 1,925	$ 1,902	$ 3,764	$ 3,648
Operating costs and expenses:
Cost of services	1,182	1,174	2,345	2,275
Selling, general and administrative	429	440	848	855
Amortization expense	20	25	41	47
Other operating (income) expense, net	(7)	1	1	1
Total operating costs and expenses	1,624	1,640	3,235	3,178
Operating income	301	262	529	470
Other income (expense):
Interest expense, net	(37)	(42)	(82)	(81)
Equity in earnings of equity method investees	7	6	14	12
Other (expense) income, net	(64)	3	(142)	4
Total non-operating expenses, net	(94)	(33)	(210)	(65)
Income before income taxes	207	229	319	405
Income tax expense	78	87	120	152
Net income	129	142	199	253
Less: Net income attributable to noncontrolling interests	11	9	20	16
Net income attributable to Quest Diagnostics	$ 118	$ 133	$ 179	$ 237
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic (per share)	$ 0.82	$ 0.92	$ 1.24	$ 1.64
Diluted (per share)	$ 0.81	$ 0.92	$ 1.23	$ 1.63
Weighted average common shares outstanding:
Basic (in Shares)	144	144	144	144
Diluted (in Shares)	145	145	145	145
Dividends per common share	$ 0.38	$ 0.33	$ 0.76	$ 0.66

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FINANCIAL INSTRUMENTS (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended	18 Months Ended
	Mar. 31, 2015	Mar. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Mar. 15, 2015	Dec. 31, 2014	Mar. 31, 2014
To be Retired in Q1 and Q2 2015 [Member]
Derivative [Line Items]
Debt instrument, face amount			$ 1,300
Forward Starting Interest Rate Swaps [Member]
Derivative [Line Items]
Gain (loss) on derivatives				$ (17)
Treasury Lock [Member]
Derivative [Line Items]
Gain (loss) on derivatives	$ 3
Cash Flow Hedging [Member]
Derivative [Line Items]
Notional amount of interest rate derivatives							$ 150
Accumulated net loss from designated or qualifying cash flow hedges			13			$ 15
Net amount of deferred gains and losses on cash flow hedges that is expected to be reclassified within the next 12 months			$ 3
Cash Flow Hedging [Member] | Treasury Lock [Member]
Derivative [Line Items]
Notional amount of interest rate derivatives					$ 350
Economic Hedges [Member] | Reverse Treasury Locks [Member] | Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount of interest rate derivatives					$ 280
Economic Hedges [Member] | Reverse Treasury Locks [Member] | Not Designated as Hedging Instrument [Member] | Other Operating (Income) Expense [Member]
Derivative [Line Items]
Gain on derivative		$ 3

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 199	$ 253
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	153	156
Provision for doubtful accounts	158	148
Deferred income tax benefit	(5)	(26)
Stock-based compensation expense	27	25
Excess tax benefits from stock-based compensation arrangements	(3)	0
Other, net	(5)	(2)
Changes in operating assets and liabilities:
Accounts receivable	(163)	(191)
Accounts payable and accrued expenses	(49)	(39)
Income taxes payable	17	44
Other assets and liabilities, net	(2)	(4)
Net cash provided by operating activities	327	364
Cash flows from investing activities:
Business acquisitions, net of cash acquired	(6)	(723)
Capital expenditures	(117)	(117)
Increase in investments and other assets	0	(1)
Net cash used in investing activities	(123)	(841)
Cash flows from financing activities:
Proceeds from borrowings	1,829	1,738
Repayments of debt	(1,821)	(1,159)
Purchases of treasury stock	(149)	(57)
Exercise of stock options	55	30
Excess tax benefits from stock-based compensation arrangements	3	0
Dividends paid	(103)	(91)
Distributions to noncontrolling interests	(19)	(14)
Other financing activities, net	(41)	(13)
Net cash (used in) provided by financing activities	(246)	434
Net change in cash and cash equivalents	(42)	(43)
Cash and cash equivalents, beginning of period	192	187
Cash and cash equivalents, end of period	$ 150	$ 144

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RESTRUCTURING ACTIVITIES (Pre-Tax Restructuring and Integration Charges) (Details) - Invigorate Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Cost and Reserve [Line Items]
Employee separation costs	$ 6	$ 6	$ 21	$ 14
Facility-related costs	0	3	0	4
Asset impairment charges	0	1	0	1
Total restructuring charges	$ 6	$ 10	$ 21	$ 19

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SUBSEQUENT EVENT

6 Months Ended

Jun. 30, 2015

Subsequent Events [Abstract]

SUBSEQUENT EVENT

SUBSEQUENT EVENTS

Sale of Noncontrolling Interest in Subsidiary

On July 1, 2015, UMass exercised its call option, acquiring an 18.9% noncontrolling interest in a subsidiary of the Company that performs diagnostic information services in a defined territory within the state of Massachusetts. In connection with the transaction, the Company paid the $50 million deferred consideration associated with the January 2, 2013 acquisition of the Massachusetts-based clinical outreach and anatomic pathology businesses from UMass and received $50 million associated with the call option exercise price. The deferred consideration is included in accounts payable and accrued expenses at June 30, 2015.

Clinical Trials Central Laboratory Services Joint Venture

On July 1, 2015, the Company closed a transaction with Quintiles Transnational Holdings Inc. to form a global clinical trials central laboratory services joint venture, Q² Solutions. In connection with the transaction, the Company contributed certain assets of its Clinical Trials business to the newly formed joint venture in exchange for a non-controlling, 40% ownership interest. For further details regarding the transaction, see Note 6.

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RESTRUCTURING ACTIVITIES (Activities of Restructuring Liabilities) (Details) - Invigorate Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Restructuring Reserve [Roll Forward]
Balance, beginning of period			$ 29
Current period charges	$ 6	$ 10	21	$ 19
Cash payments			(22)
Other / adjustments			(3)
Balance, end of period	25		25
Employee Separation Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period			18
Current period charges			21
Cash payments			(19)
Other / adjustments			0
Balance, end of period	20		20
Facility-Related Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period			11
Current period charges			0
Cash payments			(3)
Other / adjustments			(3)
Balance, end of period	$ 5		$ 5

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share, Basic and Diluted [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The computation of basic and diluted earnings per common share was as follows (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Amounts attributable to Quest Diagnostics’ stockholders:
Net income attributable to Quest Diagnostics	$	118	$	133	$	179	$	237
Less: Earnings allocated to participating securities	1		—		1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	117	$	133	$	178	$	236
Weighted average common shares outstanding – basic	144		144		144		144
Effect of dilutive securities:
Stock options and performance share units	1		1		1		1
Weighted average common shares outstanding – diluted	145		145		145		145
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	0.82	$	0.92	$	1.24	$	1.64
Diluted	$	0.81	$	0.92	$	1.23	$	1.63

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect (shares in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014
Stock options and performance share units	2	3	2	4

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock, at Cost	Non-controlling Interests
Balance, value at Dec. 31, 2013	$ 3,973	$ 2	$ 2,379	$ 5,358	$ (8)	$ (3,783)	$ 25
Balance, shares at Dec. 31, 2013		144
Net income	253			237			16
Other comprehensive income, net of tax	0				0
Dividends declared	(95)			(95)
Distributions to noncontrolling interests	(14)						(14)
Issuance of common stock under benefit plans, value	9					9
Issuance of common stock under benefit plans, shares		1
Stock-based compensation expense	25		$ 23			2
Exercise of stock options, value	30		(3)			33
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, value	(5)		$ (5)
Purchases of treasury stock, value	(57)					(57)
Purchases of treasury stock, shares		(1)
Balance, value at Jun. 30, 2014	4,119	$ 2	$ 2,394	5,500	(8)	(3,796)	27
Balance, shares at Jun. 30, 2014		144
Balance, value at Dec. 31, 2014	4,330	$ 2	2,418	5,723	(27)	(3,815)	29
Balance, shares at Dec. 31, 2014		144
Net income	199			179			20
Other comprehensive income, net of tax	2				2
Dividends declared	(109)			(109)
Distributions to noncontrolling interests	(19)						(19)
Issuance of common stock under benefit plans, value	11		4			7
Issuance of common stock under benefit plans, shares		1
Stock-based compensation expense	27		$ 25			2
Exercise of stock options, value	55					55
Exercise of stock options, shares		1
Shares to cover employee payroll tax withholdings on stock issued under benefit plans, value	(6)		$ (6)
Tax benefits associated with stock-based compensation plans	3		3
Purchases of treasury stock, value	(149)					(149)
Purchases of treasury stock, shares		(2)
Balance, value at Jun. 30, 2015	$ 4,344	$ 2	$ 2,444	$ 5,793	$ (25)	$ (3,900)	$ 30
Balance, shares at Jun. 30, 2015		144

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 129	$ 142	$ 199	$ 253
Other comprehensive income (loss):
Currency translation	4	3	(2)	2
Market valuation, net of tax	0	3	2	3
Net deferred loss on cash flow hedges, net of tax	1	(3)	2	(5)
Other comprehensive income	5	3	2	0
Comprehensive income	134	145	201	253
Less: Comprehensive income attributable to noncontrolling interests	11	9	20	16
Comprehensive income attributable to Quest Diagnostics	$ 123	$ 136	$ 181	$ 237

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FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2015

Derivative Instruments and Hedging Activities Disclosure [Abstract]

FINANCIAL INSTRUMENTS

FINANCIAL INSTRUMENTS

The Company uses derivative financial instruments to manage its exposure to market risks for changes in interest rates and, from time to time, foreign currencies. This strategy includes the use of interest rate swap agreements, forward starting interest rate swap agreements, treasury lock agreements and foreign currency forward contracts to manage its exposure to movements in interest and currency rates. The Company has established policies and procedures for risk assessment and the approval, reporting and monitoring of derivative financial instrument activities. These policies prohibit holding or issuing derivative financial instruments for speculative purposes. The Company does not enter into derivative financial instruments that contain credit-risk-related contingent features or requirements to post collateral.

Interest Rate Risk

The Company is exposed to interest rate risk on its cash and cash equivalents and its debt obligations. Interest income earned on cash and cash equivalents may fluctuate as interest rates change; however, due to their relatively short maturities, the Company does not hedge these assets or their investment cash flows and the impact of interest rate risk is not material. The Company's debt obligations consist of fixed-rate and variable-rate debt instruments. The Company's primary objective is to achieve the lowest overall cost of funding while managing the variability in cash outflows within an acceptable range. In order to achieve this objective, the Company has entered into interest rate swaps. Interest rate swaps involve the periodic exchange of payments without the exchange of underlying principal or notional amounts. Net settlements between the counterparties are recognized as an adjustment to interest expense.

Interest Rate Derivatives – Cash Flow Hedges

From time to time, the Company has entered into various interest rate lock agreements and forward starting interest rate swap agreements to hedge part of the Company's interest rate exposure associated with the variability in future cash flows attributable to changes in interest rates.

During the fourth quarter of 2013 and first quarter of 2014, the Company entered into various forward starting interest rate swap agreements for an aggregate notional amount of $150 million which were accounted for as cash flow hedges. In connection with the issuance of the 2015 Senior Notes, all of these agreements were settled and the Company paid $17 million. These losses are deferred in stockholders’ equity, net of income taxes, as a component of accumulated other comprehensive loss, and amortized as an adjustment to interest expense over the term of the Senior Notes due 2025.

In March 2015, the Company entered into interest rate lock agreements with several financial institutions for a total notional amount of $350 million which were accounted for as cash flow hedges. These agreements were entered into to hedge a portion of the Company’s interest rate exposure associated with variability in future cash flows attributable to changes in the five-year, ten-year and thirty-year treasury rates related to the planned issuance of the 2015 Senior Notes. In connection with the issuance of the 2015 Senior Notes, these agreements were settled and the Company received $3 million. These gains are deferred in stockholders’ equity, net of income taxes, as a component of accumulated other comprehensive loss, and amortized as an adjustment to interest expense over the term of the respective senior notes.

The total net loss, net of taxes, recognized in accumulated other comprehensive loss, related to the Company's cash flow hedges as of June 30, 2015 and December 31, 2014 was $13 million and $15 million, respectively. The loss recognized on the Company's cash flow hedges for the three and six months ended June 30, 2015 and 2014, as a result of ineffectiveness, was not material. The net amount of deferred losses on cash flow hedges that is expected to be reclassified from accumulated other comprehensive loss into interest expense, net within the next twelve months is $3 million.

Interest Rate Derivatives – Fair Value Hedges

The Company maintains various fixed-to-variable interest rate swaps to convert a portion of the Company's long-term debt into variable interest rate debt. A summary of the notional amounts of these interest rate swaps as of June 30, 2015 and December 31, 2014 is as follows:

		Notional Amount
Debt Instrument	Floating Rate Paid by the Company	June 30, 2015		December 31, 2014
3.20% Senior Notes due April 2016	Six-month LIBOR plus a 2.3% spread	$	—	$	200
4.75% Senior Notes due January 2020	One-month LIBOR plus a 3.6% spread	350		350
4.70% Senior Notes due April 2021	One-month LIBOR plus a 2.45% to 3.39% spread	400		400
4.25% Senior Notes due April 2024	One-month LIBOR plus a 1.54% to 1.59% spread	250		250
3.50% Senior Notes due March 2025	One-month LIBOR plus a 1.44% spread	200		—
		$	1,200	$	1,200

In April 2015, the Company terminated the outstanding interest rate swaps associated with the Senior Notes due 2016. The value of these interest rate swaps at the date of termination was not material. The net amount of losses on fair value hedges related to the Senior Notes due 2016 reclassified into earnings upon redemption for the three and six months ended June 30, 2015 was not material.    

Since inception, the fair value hedges have been effective or highly effective; therefore, there is no impact on earnings for the three and six months ended June 30, 2015 and 2014 as a result of hedge ineffectiveness.

Interest Rate Derivatives - Economic Hedges

In March 2015, in connection with the cash tender offer and redemption discussed in Note 9, the Company entered into reverse interest rate lock agreements with several financial institutions which were not designated for hedge accounting. The Company entered into these agreements to hedge the variability in cash flows associated with $280 million of the $1.3 billion principal amount of debt that was retired in the first and second quarters of 2015. Certain of these agreements were settled during the first quarter of 2015 which resulted in a gain of $3 million which was recognized in other (expense) income, net. The remaining agreements were settled in the second quarter of 2015 and the gain for the period ended June 30, 2015 was not material.

A summary of the fair values of derivative instruments in the consolidated balance sheets is stated in the table below:

	June 30, 2015				December 31, 2014
	Balance Sheet Classification	Fair Value			Balance Sheet Classification	Fair Value
Derivatives Designated as Hedging Instruments
Asset Derivatives:
Interest rate swaps	Other assets	$	15		Other assets	$	17
Liability Derivatives:
Interest rate swaps	Other liabilities	12			Other liabilities	13
Forward starting interest rate swaps		—			Other liabilities	15
Total Liability Derivatives		12				28
Derivatives Not Designated as Hedging Instruments
Asset Derivatives:
Put option		—			Prepaid expenses and other current assets	1
Liability Derivatives:
Call option	Accounts payable and accrued expenses	4			Accounts payable and accrued expenses	5
Total Net Derivatives (Liabilities)		$	(1	)		$	(15	)

A full description regarding the Company's use of derivative financial instruments is contained in Note 14 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.

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DOCUMENT AND ENTITY INFORMATION - shares	6 Months Ended
	Jun. 30, 2015	Jul. 23, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Entity Registrant Name	QUEST DIAGNOSTICS INC
Entity Central Index Key	0001022079
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		143,552,998

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STOCKHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2015

Stockholders' Equity Attributable to Parent [Abstract]

STOCKHOLDERS' EQUITY

STOCKHOLDERS’ EQUITY

Components of Comprehensive Income

The market valuation adjustments represent unrealized holding gains (losses) on available-for-sale securities, net of taxes. The net deferred loss on cash flow hedges represents deferred losses on the Company’s interest rate related derivative financial instruments designated as cash flow hedges, net of amounts reclassified to interest expense (see Note 10). For the three and six months ended June 30, 2015 and 2014, the tax effects related to the market valuation adjustments and deferred losses were not material. Foreign currency translation adjustments are not adjusted for income taxes since they relate to indefinite investments in non-U.S. subsidiaries.

Dividend Program

During the first and second quarters of 2015, the Company's Board of Directors declared a quarterly cash dividend of $0.38 per common share. During each of the quarters of 2014, the Company's Board of Directors declared a quarterly cash dividend of $0.33 per common share.

Share Repurchase Program

At June 30, 2015, $547 million remained available under the Company’s share repurchase authorizations. The share repurchase authorization has no set expiration or termination date.    

For the three months ended June 30, 2015, the Company repurchased 0.6 million shares of its common stock at an average price of $72.03 per share for $39 million. For the six months ended June 30, 2015, the Company repurchased 2.1 million shares of its common stock at an average price of $71.62 per share for $149 million. For the three and six months ended June 30, 2015, the Company reissued 0.4 million shares and 1.2 million shares, respectively, for employee benefit plans.

For the three months ended June 30, 2014, the Company repurchased 0.4 million shares of its common stock at an average price of $57.74 per share for a total of $25 million. For the six months ended June 30, 2014, the Company repurchased 1.0 million shares of its common stock at an average price of $54.84 per share for a total of $57 million. For the three and six months ended June 30, 2014, the Company reissued 0.4 million shares and 0.8 million shares, respectively, for employee benefit plans.

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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents	$ 150	$ 192
Accounts receivable, net of allowance for doubtful accounts of $265 and $250 at June 30, 2015 and December 31, 2014, respectively	937	932
Inventories	109	110
Deferred income taxes	161	169
Prepaid expenses and other current assets	173	200
Total current assets	1,530	1,603
Property, plant and equipment, net	906	933
Goodwill	5,987	6,032
Intangible assets, net	1,022	1,071
Other assets	219	218
Non-current assets held for sale	56	0
Total assets	9,720	9,857
Liabilities and Stockholders' Equity
Accounts payable and accrued expenses	1,074	1,191
Current portion of long-term debt	168	518
Total current liabilities	1,242	1,709
Long-term debt	3,568	3,224
Other liabilities	566	594
Quest Diagnostics stockholders’ equity:
Common stock, par value $0.01 per share; 600 shares authorized at both June 30, 2015 and December 31, 2014; 216 shares and 215 shares issued at June 30, 2015 and December 31, 2014, respectively	2	2
Additional paid-in capital	2,444	2,418
Retained earnings	5,793	5,723
Accumulated other comprehensive loss	(25)	(27)
Treasury stock, at cost; 72 shares and 71 shares at June 30, 2015 and December 31, 2014, respectively	(3,900)	(3,815)
Total Quest Diagnostics stockholders' equity	4,314	4,301
Noncontrolling interests	30	29
Total stockholders' equity	4,344	4,330
Total liabilities and stockholders' equity	$ 9,720	$ 9,857

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BUSINESS ACQUISITION

6 Months Ended

Jun. 30, 2015

Business Combinations [Abstract]

BUSINESS ACQUISITION

BUSINESS ACQUISITIONS

In the first quarter of 2015, the Company finalized the purchase price allocations associated with the 2014 acquisitions of Solstas Lab Partners Group ("Solstas") and Summit Health, Inc. ("Summit Health"). The purchase price allocation adjustments recorded in 2015 were not material. For further details regarding the Company's 2014 acquisitions, see Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K. For further details regarding the fair value of the estimated contingent consideration associated with the Summit Health and Steward Health Care Systems, LLC ("Steward") acquisitions, see Note 7.

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RESTRUCTURING ACTIVITIES

6 Months Ended

Jun. 30, 2015

Restructuring and Related Activities [Abstract]

RESTRUCTURING ACTIVITIES

Invigorate Program

During 2012, the Company committed to a course of action related to a multi-year program called Invigorate which is

designed to reduce its cost structure. Invigorate has consisted of several flagship programs, with structured plans in each, to drive savings and improve performance across the customer value chain. These flagship programs include: organization excellence; information technology excellence; procurement excellence; service excellence; lab excellence; and billing excellence. From 2012 through 2014, the Invigorate program was intended to partially offset reimbursement pressures and labor and benefit cost increases; free up additional resources to invest in science, innovation and other growth initiatives; and enable us to improve service quality and operating profitability.

In January 2015, the Company adopted a course of action related to its multi-year Invigorate program to further reduce its cost structure through 2017. This multi-year course of action continues to focus on the flagship program opportunities and new key opportunities such as: standardizing processes, information technology systems, equipment and data; enhancing electronic enabling services; and enhancing reimbursement for work performed. The estimated pre-tax charges expected to be incurred in 2015 in connection with this course of action are: $25 million to $30 million of employee separation costs and $10 million to $15 million of facility-related costs and asset impairment charges.     

The following table provides a summary of the Company's pre-tax restructuring charges associated with its Invigorate program and other restructuring activities for the three and six months ended June 30, 2015 and 2014:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Employee separation costs	$	6	$	6	$	21	$	14
Facility-related costs	—		3		—		4
Asset impairment charges	—		1		—		1
Total restructuring charges	$	6	$	10	$	21	$	19

Total restructuring charges incurred for the three and six months ended June 30, 2015 are primarily associated with various workforce reduction initiatives as the Company continues to simplify and restructure its organization. Of the total $6 million in restructuring charges incurred during the three months ended June 30, 2015, $4 million and $2 million were recorded in cost of services and selling, general and administrative expenses, respectively. Of the total $21 million in restructuring charges incurred during the six months ended June 30, 2015, $17 million and $4 million were recorded in cost of services and selling, general and administrative expenses, respectively.

Total restructuring charges incurred for the three and six months ended June 30, 2014 are primarily associated with various workforce reduction initiatives as the Company continued to simplify and restructure its organization. Of the total $10 million in restructuring charges incurred during the three months ended June 30, 2014, $4 million and $6 million were recorded in cost of services and selling, general and administrative expenses, respectively. Of the total $19 million in restructuring charges incurred during the six months ended June 30, 2014, $12 million and $7 million were recorded in cost of services and selling, general and administrative expenses, respectively.

Charges for all periods presented were primarily recorded in the Company's DIS business.

The following table summarizes activity in the restructuring liability as of June 30, 2015:

	Employee Separation Costs			Facility-Related Costs			Total
Balance, December 31, 2014	$	18		$	11		$	29
Current period charges	21			—			21
Less:
Cash payments	(19		)	(3		)	(22		)
Other / adjustments	—			(3		)	(3		)
Balance, June 30, 2015	$	20		$	5		$	25

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2015

Accounting Policies [Abstract]

Basis of Presentation

The interim unaudited consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of results of operations, comprehensive income, financial condition, cash flows and stockholders' equity for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s 2014 Annual Report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements as of December 31, 2014, but does not include all the disclosures required by accounting principles generally accepted in the United States (“GAAP”).

As a result of the early adoption of the accounting standard update (“ASU”) associated with classification of debt issuance costs, certain reclassifications have been made to the prior period financial statements to conform with the current period presentation. For further details regarding the impact of the ASU, see Adoption of New Accounting Standards.

Use Of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Earnings Per Share

The Company's unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities.

New Accounting Standards

Adoption of New Accounting Standards

On January 1, 2015, the Company adopted a new accounting standard issued by the Financial Accounting Standards Board ("FASB") related to the presentation and reporting of discontinued operations, including the disposals of components of an entity. The standard changes the criteria for reporting discontinued operations and requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income, and expenses of discontinued operations. The new standard also requires disclosure of the pre-tax income attributable to a disposal of a significant part of an organization that does not qualify for discontinued operations reporting. The impact of this standard on the Company’s results of operations, financial position, cash flows and disclosures will be assessed as part of any future disposal activity.

In April 2015, the FASB issued an ASU which requires that debt issuance costs be presented in the balance sheet as a direct reduction to the carrying amount of the associated debt liability, consistent with debt discounts. The Company adopted this standard in the second quarter of 2015, which has been applied retrospectively. Adoption of this standard has resulted in the reclassification of $20 million of unamortized debt issuance costs from other assets to a reduction of long-term debt on the consolidated balance sheet at December 31, 2014.    

New Accounting Pronouncements

In May 2014, the FASB issued an ASU on revenue recognition. This ASU outlines a single comprehensive model to use in accounting for revenue arising from contracts with customers. This standard supersedes existing revenue recognition requirements and eliminates most industry-specific guidance from GAAP. The core principle of the revenue recognition standard is to require an entity to recognize as revenue the amount that reflects the consideration to which it expects to be entitled in exchange for goods or services as it transfers control to its customers. The standard requires additional disclosures including those that are qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. In July 2015, the FASB voted to defer the effective date of this ASU to the first quarter of 2018, with early adoption permitted beginning in the first quarter of 2017. The ASU can be applied using a full retrospective method or a modified retrospective method of adoption. The Company is currently assessing the impact of the adoption of this ASU on the Company’s results of operations, financial position and cash flows.

In February 2015, the FASB issued an ASU which makes targeted amendments to the current consolidation guidance for variable interest entities and limited partnerships and similar entities. The ASU is effective for the Company in the first quarter of 2016 with the option of using a full retrospective or a modified retrospective method. The Company does not expect the adoption of this standard to have a material impact on its results of operations, financial position, and cash flows.

In April 2015, the FASB issued an ASU which provides guidance in determining whether a cloud computing arrangement includes a software license.  If it is determined that a cloud computing arrangement does include a software license, the software element of the arrangement should be accounted for consistent with the acquisition of other software licenses.  If the arrangement does not include a software license, it should be accounted for as a service contract.  The ASU is effective for the Company in the first quarter of 2016 and can be applied prospectively to all arrangements entered into or materially modified after the effective date or retrospectively.  The Company does not expect the adoption of this ASU to have a material impact on its results of operations, financial position and cash flows.

Derivative Financial Instruments

The Company uses derivative financial instruments to manage its exposure to market risks for changes in interest rates and, from time to time, foreign currencies. This strategy includes the use of interest rate swap agreements, forward starting interest rate swap agreements, treasury lock agreements and foreign currency forward contracts to manage its exposure to movements in interest and currency rates. The Company has established policies and procedures for risk assessment and the approval, reporting and monitoring of derivative financial instrument activities. These policies prohibit holding or issuing derivative financial instruments for speculative purposes. The Company does not enter into derivative financial instruments that contain credit-risk-related contingent features or requirements to post collateral.

Interest Rate Risk

The Company is exposed to interest rate risk on its cash and cash equivalents and its debt obligations. Interest income earned on cash and cash equivalents may fluctuate as interest rates change; however, due to their relatively short maturities, the Company does not hedge these assets or their investment cash flows and the impact of interest rate risk is not material. The Company's debt obligations consist of fixed-rate and variable-rate debt instruments. The Company's primary objective is to achieve the lowest overall cost of funding while managing the variability in cash outflows within an acceptable range. In order to achieve this objective, the Company has entered into interest rate swaps. Interest rate swaps involve the periodic exchange of payments without the exchange of underlying principal or notional amounts. Net settlements between the counterparties are recognized as an adjustment to interest expense.

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SUPPLEMENTAL CASH FLOW & OTHER DATA

6 Months Ended

Jun. 30, 2015

Supplemental Cash Flow Elements [Abstract]

SUPPLEMENTAL CASH FLOW & OTHER DATA

SUPPLEMENTAL CASH FLOW & OTHER DATA

Supplemental cash flow and other data for the three and six months ended June 30, 2015 and 2014 is as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Depreciation expense	$	55		$	56		$	112		$	109
Amortization expense	20			25			41			47
Depreciation and amortization expense	$	75		$	81		$	153		$	156
Interest expense	$	(37	)	$	(42	)	$	(83	)	$	(82	)
Interest income	—			—			1			1
Interest expense, net	$	(37	)	$	(42	)	$	(82	)	$	(81	)
Interest paid	$	45		$	30		$	99		$	82
Income taxes paid	90			129			109			138
Assets acquired under capital leases	2			8			2			10
Accounts payable associated with capital expenditures	9			14			9			14
Dividends payable	$	55		$	48		$	55		$	48
Businesses acquired:
Fair value of assets acquired	$	2		$	199		$	2		$	845
Fair value of liabilities assumed	—			12			—			82
Fair value of net assets acquired	2			187			2			763
Merger consideration paid (payable), net	4			(30		)	4			(30		)
Cash paid for business acquisitions	6			157			6			733
Less: Cash acquired	—			1			—			10
Business acquisitions, net of cash acquired	$	6		$	156		$	6		$	723

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GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS

The changes in goodwill for the six months ended June 30, 2015 and for the year ended December 31, 2014 are as follows:

	June 30, 2015			December 31, 2014
Balance, beginning of period	$	6,032		$	5,649
Goodwill acquired during the period	2			383
Reclassification to assets held for sale	(47		)	—
Balance, end of period	$	5,987		$	6,032

Principally all of the Company’s goodwill as of June 30, 2015 and December 31, 2014 is associated with its DIS business.

For the six months ended June 30, 2015, reclassification to assets held for sale was principally associated with Clinical Trials. For further details regarding assets held for sale, see Note 6.

For the year ended December 31, 2014, goodwill acquired was principally associated with the Solstas, Summit Health, and Steward acquisitions. Acquisitions during 2014 also resulted in $270 million of intangible assets, principally comprised of customer-related intangibles and trade names. For further details regarding the Company's 2014 acquisitions, see Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.        

Intangible assets at June 30, 2015 and December 31, 2014 consisted of the following:

	Weighted Average Amortization Period (in years)	June 30, 2015							December 31, 2014
		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizing intangible assets:
Customer-related intangibles	19	$	923	$	(278	)	$	645	$	929	$	(259	)	$	670
Non-compete agreements	5	6		(3		)	3		43		(37		)	6
Technology	14	117		(43		)	74		118		(38		)	80
Other	8	119		(64		)	55		152		(82		)	70
Total	17	1,165		(388		)	777		1,242		(416		)	826
Intangible assets not subject to amortization:
Trade names		244		—			244		244		—			244
Other		1		—			1		1		—			1
Total intangible assets		$	1,410	$	(388	)	$	1,022	$	1,487	$	(416	)	$	1,071

As of June 30, 2015, a fully amortized contractual non-compete agreement (cost of $37 million and accumulated amortization of $37 million) that expired was written-off.

Amortization expense related to intangible assets was $20 million and $25 million for the three months ended June 30, 2015 and 2014, respectively. For the six months ended June 30, 2015 and 2014, amortization expense related to intangible assets was $41 million and $47 million, respectively.

The estimated amortization expense related to amortizable intangible assets for each of the five succeeding fiscal years and thereafter as of June 30, 2015 is as follows:

Year Ending December 31,
Remainder of 2015	$	39
2016	71
2017	67
2018	63
2019	62
2020	62
Thereafter	413
Total	$	777

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ASSETS HELD FOR SALE

6 Months Ended

Jun. 30, 2015

Disposal Group, Including Discontinued Operation, Assets [Abstract]

HELD FOR SALE AND DISCONTINUED OPERATIONS

ASSETS HELD FOR SALE

On March 30, 2015, the Company entered into a definitive agreement with Quintiles Transnational Holdings Inc.

to form a global clinical trials central laboratory services joint venture, Q² Solutions. The transaction closed on July 1, 2015. In connection with the transaction, the Company contributed certain assets of its clinical trials testing business ("Clinical Trials") to the newly formed joint venture in exchange for a non-controlling, 40% ownership interest.

The assets of Clinical Trials that will be contributed to the joint venture, principally consisting of property, plant and equipment, net and goodwill, are classified as non-current assets held for sale in the consolidated balance sheet at June 30, 2015. The Company expects to recognize a non-cash gain based on the difference between the fair value of the Company’s equity interest in the newly formed joint venture over the carrying value of the assets contributed. The non-cash gain, which is currently being determined, will be recorded in the third quarter of 2015 and is expected to be material to the Company's results of operations.

Clinical Trials, which is included in all other operating segments, has not been classified as discontinued operations. For further details regarding business segment information, see Note 14.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table provides a summary of the recognized assets and liabilities that are measured at fair value on a recurring basis:

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
June 30, 2015	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	48	$	48	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	15		—		15		—
Available-for-sale equity securities	10		10		—		—
Total	$	103	$	58	$	45	$	—
Liabilities:
Deferred compensation liabilities	$	84	$	—	$	84	$	—
Interest rate swaps	12		—		12		—
Call option	4		—		—		4
Contingent consideration	3		—		—		3
Total	$	103	$	—	$	96	$	7

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
December 31, 2014	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	49	$	49	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	17		—		17		—
Available-for-sale equity securities	9		9		—		—
Put option	1		—		—		1
Total	$	106	$	58	$	47	$	1
Liabilities:
Deferred compensation liabilities	$	85	$	—	$	85	$	—
Contingent consideration	17		—		—		17
Forward starting interest rate swaps	15		—		15		—
Interest rate swaps	13		—		13		—
Call option	5		—		—		5
Total	$	135	$	—	$	113	$	22

A full description regarding the Company's fair value measurements is contained in Note 7 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.    

The Company offers certain employees the opportunity to participate in non-qualified supplemental deferred compensation plans. A participant's deferrals, together with Company matching credits, are invested in a variety of participant-directed stock and bond mutual funds that are classified as trading securities. Changes in the fair value of these securities are measured using quoted prices in active markets based on the market price per unit multiplied by the number of units held exclusive of any transaction costs. A corresponding adjustment for changes in fair value of the trading securities is also reflected in the changes in fair value of the deferred compensation obligation. The deferred compensation liabilities are classified within Level 2 because their inputs are derived principally from observable market data by correlation to the trading securities.

The Company offers certain employees the opportunity to participate in a non-qualified deferred compensation program. A participant's deferrals, together with Company matching credits, are “invested” at the direction of the employee in a hypothetical portfolio of investments which are tracked by an administrator. The Company purchases life insurance policies, with the Company named as beneficiary of the policies, for the purpose of funding the program's liability. Changes in the cash surrender value of the life insurance policies are based upon earnings and changes in the value of the underlying investments. Changes in the fair value of the deferred compensation obligation are derived using quoted prices in active markets based on the market price per unit multiplied by the number of units. The cash surrender value and the deferred compensation obligations are classified within Level 2 because their inputs are derived principally from observable market data by correlation to the hypothetical investments.

The fair value measurements of the Company's interest rate swaps and forward starting swaps are model-derived valuations as of a given date in which all significant inputs are observable in active markets including certain financial information and certain assumptions regarding past, present and future market conditions.

Investment in available-for-sale equity securities represents an investment in registered shares of a publicly-held company listed on the Euronext Paris exchange. The Company's investment in available-for-sale equity securities is classified within Level 1 of the fair value hierarchy because the fair value is obtained from quoted prices in an active market.

In connection with the acquisition of certain businesses from UMass Memorial Medical Center ("UMass"), the Company granted to UMass a call option and UMass granted to the Company a put option for UMass to acquire an 18.90% equity interest in a newly formed entity. The put and call options are derivative instruments whose fair values have been measured using a combination of discounted cash flows and the Black-Scholes-Merton option pricing model. During the second quarter of 2015, UMass provided notice of its intention to exercise its call option and the transaction closed effective July 1, 2015. The put option expired unexercised. For further details on the exercise of the call option and closing of the transaction, see Note 15.

In April 2014, and as further detailed in Note 5 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K, the Company completed the acquisitions of Summit Health and Steward. In connection with these acquisitions the Company initially recorded an aggregate contingent consideration liability of $26 million. The contingent consideration liability was classified within Level 3 measured at fair value using a probability weighted and discounted cash flow method. These measurements are based on externally obtained inputs and management's probability assessments of the occurrence of triggering events, appropriately discounted considering the uncertainties associated with the obligations, as well as the likelihood of achieving financial targets. The initial probability estimate of the occurrence of such triggering events associated with the amounts the Company could be obligated to pay in future periods for both Summit Health and Steward was between 5% and 95%. The probability-weighted cash flows were then discounted using a discount rate of 1.5% to 2.8%. The estimated fair value of the contingent consideration associated with Summit Health was reduced to $13 million in the fourth quarter of 2014 and $0 in the second quarter of 2015. These reductions were a result of updated revenue forecasts for 2015 compared to the earn-out target included in the contingent consideration arrangement. The contingent consideration associated with Summit Health, if earned, would be paid in the first quarter of 2016, with a maximum payment of $25 million. The remaining contingent consideration associated with Steward is projected to be paid out in three equal annual installments, with a maximum payout of $4 million in total.

The following table provides a reconciliation of the beginning and ending balances of assets and liabilities using significant unobservable inputs (Level 3):

	Assets			Liabilities
	Put Option Derivative Asset			Contingent Consideration			Call Option Derivative Liability			Total Liabilities
Balance, December 31, 2014	1			$	17		5			$	22
Settlements	—			(1		)	—			(1		)
Total gains/losses - realized/unrealized:
Included in earnings	(1		)	(13		)	(1		)	(14		)
Balance, June 30, 2015	$	—		$	3		$	4		$	7

The $13 million gain included in earnings associated with the change in the fair value of contingent consideration for the three and six months ended June 30, 2015 is reported in other operating (income) expense, net.

The carrying amounts of cash and cash equivalents, accounts receivable and accounts payable and accrued expenses approximate fair value based on the short maturities of these instruments. At June 30, 2015, the fair value of the Company’s debt was estimated at $3.8 billion, which exceeded the carrying value by $84 million. At December 31, 2014, the fair value of the Company's debt was estimated at $4.2 billion, which exceeded the carrying value by $416 million. Principally all of the Company's debt is classified within Level 1 of the fair value hierarchy because the fair value of the debt is estimated based on rates currently offered to the Company with identical terms and maturities, using quoted active market prices and yields, taking into account the underlying terms of the debt instruments.

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DEBT

6 Months Ended

Jun. 30, 2015

Debt Instruments [Abstract]

DEBT

DEBT

Long-term Debt

Long-term debt at June 30, 2015 and December 31, 2014 consisted of the following:

	June 30, 2015			December 31, 2014
Secured Receivables Credit Facility (0.88% at June 30, 2015)	$	85		$	—
5.45% Senior Notes due November 2015	—			500
3.20% Senior Notes due April 2016	151			304
6.40% Senior Notes due July 2017	—			375
2.70% Senior Notes due April 2019	300			300
4.75% Senior Notes due January 2020	523			524
2.50% Senior Notes due March 2020	299			—
4.70% Senior Notes due April 2021	550			549
4.25% Senior Notes due April 2024	309			311
3.50% Senior Notes due March 2025	597			—
6.95% Senior Notes due July 2037	247			421
5.75% Senior Notes due January 2040	368			439
4.70% Senior Notes due March 2045	300			—
Other	34			39
Debt issuance costs	(27		)	(20		)
Total long-term debt	3,736			3,742
Less: Current portion of long-term debt	168			518
Total long-term debt, net of current portion	$	3,568		$	3,224

Current Portion of Long-Term Debt

At June 30, 2015, current portion of long-term debt was principally comprised of the 3.20% Senior Notes due April 2016. At December 31, 2014, current portion of long-term debt was principally comprised of the 5.45% Senior Notes due November 2015.

2015 Senior Notes Offering

In March 2015, the Company completed a $1.2 billion senior notes offering (the “2015 Senior Notes”) that was sold in three tranches: (a) $300 million aggregate principal amount of 2.50% senior notes due March 2020, issued at a discount of $1 million; (b) $600 million aggregate principal amount of 3.50% senior notes due March 2025; and (c) $300 million aggregate principal amount of 4.70% senior notes due March 2045. These senior notes are unsecured obligations of the Company and rank equally with the Company's other senior unsecured obligations. None of the Company's senior notes have a sinking fund requirement.

The Company incurred $11 million of costs associated with the 2015 Senior Notes, which is included as a reduction to the carrying amount of long-term debt and is being amortized over the term of the related debt.

Retirement of Debt

In March 2015, the Company commenced a cash tender offer to purchase up to $250 million aggregate principal amount of its 6.95% Senior Notes due July 2037 and 5.75% Senior Notes due January 2040 using a portion of the proceeds from the 2015 Senior Notes. The Company repurchased $176 million of its 6.95% Senior Notes due July 2037 and $74 million of its 5.75% Senior Notes due January 2040. In April 2015, the Company redeemed all of the 5.45% Senior Notes due November 2015, $150 million of the 3.2% Senior Notes due April 2016 and all of the 6.4% Senior Notes due July 2017 with the remaining proceeds from the 2015 Senior Notes. For the three and six months ended June 30, 2015, the Company recorded a loss on retirement of debt in other (expense) income, net of $65 million and $144 million, respectively, principally comprised of premiums paid in connection with these transactions.

Maturities of Long-Term Debt

As of June 30, 2015, long-term debt matures as follows:

Year Ending December 31,
Remainder of 2015	$	12
2016	244
2017	6
2018	4
2019	302
2020	801
Thereafter	2,375
Total maturities of long-term debt	3,744
Unamortized discount	(17		)
Debt issuance costs	(27		)
Fair value basis adjustments attributable to hedged debt	36
Total long-term debt	3,736
Less: Current portion of long-term debt	168
Total long-term debt, net of current portion	$	3,568

For further discussion regarding the Company's debt, see Note 13 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.

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RESTRUCTURING ACTIVITIES (Narrative) (Details) - Invigorate Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Employee separation costs	$ 6	$ 6	$ 21	$ 14
Facility-related costs and asset impairment charges	0	3	0	4
Restructuring charges	6	10	21	19
Cost of Services [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	4	17	12
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2	$ 6	$ 4	$ 7
Scenario, Forecast [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation costs					$ 25
Facility-related costs and asset impairment charges					10
Scenario, Forecast [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation costs					30
Facility-related costs and asset impairment charges					$ 15

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BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Percentage of net revenues from the DIS business			90.00%	90.00%
Total net revenues	$ 1,925	$ 1,902	$ 3,764	$ 3,648
Total operating income	301	262	529	470
Non-operating expenses, net	(94)	(33)	(210)	(65)
Income before income taxes	207	229	319	405
Income tax expense	78	87	120	152
Net income	129	142	199	253
Less: Net income attributable to noncontrolling interests	11	9	20	16
Net income attributable to Quest Diagnostics	118	133	179	237
DIS business
Segment Reporting Information [Line Items]
Total net revenues	1,771	1,763	3,463	3,377
Total operating income	302	293	544	524
All other operating segments [Member]
Segment Reporting Information [Line Items]
Total net revenues	154	139	301	271
Total operating income	30	22	56	40
General corporate activities [Member]
Segment Reporting Information [Line Items]
Total operating income	$ (31)	$ (53)	$ (71)	$ (94)

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BUSINESS SEGMENT INFORMATION

6 Months Ended

Jun. 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. The Company's DS business offers 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 classified certain assets of Clinical Trials, which is included in all other operating segments, as held for sale. For further details regarding assets held for sale, see Note 6.

During 2014, the Company acquired Solstas, Summit Health and Steward which are included in the Company's DIS business.

At June 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 six months ended June 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 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. 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 June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
Net revenues:
DIS business	$	1,771		$	1,763		$	3,463		$	3,377
All other operating segments	154			139			301			271
Total net revenues	$	1,925		$	1,902		$	3,764		$	3,648
Operating earnings (loss):
DIS business	$	302		$	293		$	544		$	524
All other operating segments	30			22			56			40
General corporate activities	(31		)	(53		)	(71		)	(94		)
Total operating income	301			262			529			470
Non-operating expenses, net	(94		)	(33		)	(210		)	(65		)
Income before income taxes	207			229			319			405
Income tax expense	78			87			120			152
Net income	129			142			199			253
Less: Net income attributable to noncontrolling interests	11			9			20			16
Net income attributable to Quest Diagnostics	$	118		$	133		$	179		$	237

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Fair Value, Measurement Inputs

The following table provides a summary of the recognized assets and liabilities that are measured at fair value on a recurring basis:

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
June 30, 2015	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	48	$	48	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	15		—		15		—
Available-for-sale equity securities	10		10		—		—
Total	$	103	$	58	$	45	$	—
Liabilities:
Deferred compensation liabilities	$	84	$	—	$	84	$	—
Interest rate swaps	12		—		12		—
Call option	4		—		—		4
Contingent consideration	3		—		—		3
Total	$	103	$	—	$	96	$	7

			Basis of Fair Value Measurements
			Quoted Prices in Active Markets for Identical Assets / Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
December 31, 2014	Total		Level 1		Level 2		Level 3
Assets:
Trading securities	$	49	$	49	$	—	$	—
Cash surrender value of life insurance policies	30		—		30		—
Interest rate swaps	17		—		17		—
Available-for-sale equity securities	9		9		—		—
Put option	1		—		—		1
Total	$	106	$	58	$	47	$	1
Liabilities:
Deferred compensation liabilities	$	85	$	—	$	85	$	—
Contingent consideration	17		—		—		17
Forward starting interest rate swaps	15		—		15		—
Interest rate swaps	13		—		13		—
Call option	5		—		—		5
Total	$	135	$	—	$	113	$	22

Reconciliation of Beginning and Ending Balances of Assets and Liabilities, Unobservable Inputs

The following table provides a reconciliation of the beginning and ending balances of assets and liabilities using significant unobservable inputs (Level 3):

	Assets			Liabilities
	Put Option Derivative Asset			Contingent Consideration			Call Option Derivative Liability			Total Liabilities
Balance, December 31, 2014	1			$	17		5			$	22
Settlements	—			(1		)	—			(1		)
Total gains/losses - realized/unrealized:
Included in earnings	(1		)	(13		)	(1		)	(14		)
Balance, June 30, 2015	$	—		$	3		$	4		$	7

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SUPPLEMENTAL CASH FLOW & OTHER DATA (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Supplemental Cash Flow Elements [Abstract]
Depreciation expense	$ 55	$ 56	$ 112	$ 109
Amortization expense	20	25	41	47
Depreciation and amortization expense	75	81	153	156
Interest expense	(37)	(42)	(83)	(82)
Interest income	0	0	1	1
Interest expense, net	(37)	(42)	(82)	(81)
Interest paid	45	30	99	82
Income taxes paid	90	129	109	138
Assets acquired under capital leases	2	8	2	10
Accounts payable associated with capital expenditures	9	14	9	14
Dividends payable	55	48	55	48
Fair value of assets acquired	2	199	2	845
Fair value of liabilities assumed	0	12	0	82
Fair value of net assets acquired	2	187	2	763
Merger consideration paid (payable), net	4	(30)	4	(30)
Cash paid for business acquisitions	6	157	6	733
Less: Cash acquired	0	1	0	10
Business acquisitions, net of cash acquired	$ 6	$ 156	$ 6	$ 723

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GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Goodwill, Balance at beginning of period			$ 6,032	$ 5,649	$ 5,649
Goodwill acquired during the period			2		383
Reclassification to assets held for sale			(47)		0
Goodwill, Balance at end of period	$ 5,987		5,987		6,032
Intangible assets, Cost	1,410		1,410		1,487
Intangible assets, Accumulated Amortization	(388)		(388)		(416)
Amortizing intangible assets, Net	1,022		1,022		1,071
Amortization expense	20	$ 25	41	$ 47
Remainder of 2015	39		39
Future Amortization Expense, 2016	71		71
Future Amortization Expense, 2017	67		67
Future Amortization Expense, 2018	63		63
Future Amortization Expense, 2019	62		62
Future Amortization Expense, 2020	62		62
Future Amortization Expense, Thereafter	413		413
Future Amortization Expense, Total	777		777
Intangible Assets Not Subject to Amortization - Tradenames [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	244		244		244
Amortizing intangible assets, Net	244		244		244
Intangible Assets Not Subject to Amortization - Other [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	1		1		1
Amortizing intangible assets, Net	1		$ 1		1
Customer-related intangibles [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			19 years
Intangible assets, Cost	923		$ 923		929
Intangible assets, Accumulated Amortization	(278)		(278)		(259)
Amortizing intangible assets, Net	645		$ 645		670
Noncompete Agreements [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			5 years
Intangible assets, Cost	6		$ 6		43
Intangible assets, Accumulated Amortization	(3)		(3)		(37)
Amortizing intangible assets, Net	3		$ 3		6
Technology [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			14 years
Intangible assets, Cost	117		$ 117		118
Intangible assets, Accumulated Amortization	(43)		(43)		(38)
Amortizing intangible assets, Net	74		$ 74		80
Other [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			8 years
Intangible assets, Cost	119		$ 119		152
Intangible assets, Accumulated Amortization	(64)		(64)		(82)
Amortizing intangible assets, Net	55		$ 55		70
Total Amortizing Intangible Assets [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Weighted Average Amortization Period			17 years
Intangible assets, Cost	1,165		$ 1,165		1,242
Intangible assets, Accumulated Amortization	(388)		(388)		(416)
Amortizing intangible assets, Net	777		777		826
Noncompete Agreements, Fully Amortized [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets, Cost	37		37
Intangible assets, Accumulated Amortization	$ (37)		$ (37)
Solstas, Summit Health, and Steward [Member]
Finite-Lived and Indefinite-lived Intangible Assets [Line Items]
Intangible assets					$ 270

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 265	$ 250
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600	600
Common stock, shares, issued	216	215
Treasury stock, shares	72	71

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2015

Earnings Per Share, Basic and Diluted [Abstract]

EARNINGS (LOSS) PER SHARE

EARNINGS PER SHARE

The computation of basic and diluted earnings per common share was as follows (in millions, except per share data):

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Amounts attributable to Quest Diagnostics’ stockholders:
Net income attributable to Quest Diagnostics	$	118	$	133	$	179	$	237
Less: Earnings allocated to participating securities	1		—		1		1
Earnings available to Quest Diagnostics’ common stockholders – basic and diluted	$	117	$	133	$	178	$	236
Weighted average common shares outstanding – basic	144		144		144		144
Effect of dilutive securities:
Stock options and performance share units	1		1		1		1
Weighted average common shares outstanding – diluted	145		145		145		145
Earnings per share attributable to Quest Diagnostics’ common stockholders:
Basic	$	0.82	$	0.92	$	1.24	$	1.64
Diluted	$	0.81	$	0.92	$	1.23	$	1.63

The following securities were not included in the calculation of diluted earnings per share due to their antidilutive effect (shares in millions):

	Three Months Ended June 30,		Six Months Ended June 30,
	2015	2014	2015	2014
Stock options and performance share units	2	3	2	4

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GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Goodwill, Net

The changes in goodwill for the six months ended June 30, 2015 and for the year ended December 31, 2014 are as follows:

	June 30, 2015			December 31, 2014
Balance, beginning of period	$	6,032		$	5,649
Goodwill acquired during the period	2			383
Reclassification to assets held for sale	(47		)	—
Balance, end of period	$	5,987		$	6,032

Intangible Assets Excluding Goodwill

Intangible assets at June 30, 2015 and December 31, 2014 consisted of the following:

	Weighted Average Amortization Period (in years)	June 30, 2015							December 31, 2014
		Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizing intangible assets:
Customer-related intangibles	19	$	923	$	(278	)	$	645	$	929	$	(259	)	$	670
Non-compete agreements	5	6		(3		)	3		43		(37		)	6
Technology	14	117		(43		)	74		118		(38		)	80
Other	8	119		(64		)	55		152		(82		)	70
Total	17	1,165		(388		)	777		1,242		(416		)	826
Intangible assets not subject to amortization:
Trade names		244		—			244		244		—			244
Other		1		—			1		1		—			1
Total intangible assets		$	1,410	$	(388	)	$	1,022	$	1,487	$	(416	)	$	1,071

Future Amortization Expense Intangible Assets

The estimated amortization expense related to amortizable intangible assets for each of the five succeeding fiscal years and thereafter as of June 30, 2015 is as follows:

Year Ending December 31,
Remainder of 2015	$	39
2016	71
2017	67
2018	63
2019	62
2020	62
Thereafter	413
Total	$	777

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FAIR VALUE MEASUREMENTS (Narrative) (Details) - USD ($)		3 Months Ended	6 Months Ended
	Apr. 18, 2014	Jun. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Jan. 02, 2013
Business Acquisition [Line Items]
Contingent consideration, liability	$ 26,000,000
Fair value of debt		$ 3,800,000,000	$ 3,800,000,000	$ 4,200,000,000
Fair value in excess of carrying value of debt		84,000,000	84,000,000	416,000,000
Contingent Consideration [Member] | Other Operating (Income) Expense [Member]
Business Acquisition [Line Items]
Included in earnings		0	0
Minimum [Member]
Business Acquisition [Line Items]
Fair value inputs, probability of occurrence	5.00%
Discount rate	1.50%
Maximum [Member]
Business Acquisition [Line Items]
Fair value inputs, probability of occurrence	95.00%
Discount rate	2.80%
Summit Health, Inc. [Member]
Business Acquisition [Line Items]
Contingent consideration, liability		0	0	$ 13,000,000
Contingent consideration value high	$ 25,000,000
Steward Health Care Systems, LLC [Member] [Member]
Business Acquisition [Line Items]
Contingent consideration value high		$ 4,000,000	$ 4,000,000
UMass [Member]
Business Acquisition [Line Items]
Percentage of equity interest expected to be divested					18.90%

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES

The Company has a line of credit with a financial institution totaling $85 million for the issuance of letters of credit (the “Letter of Credit Line”). The Letter of Credit Line, which is renewed annually, matures on November 17, 2015. The Company can also issue letters of credit under its senior unsecured revolving credit facility. For further discussion regarding the Company's senior unsecured revolving credit facility, see Note 13 to the consolidated financial statements in the Company's 2014 Annual Report on Form 10-K.    

In support of its risk management program, to ensure the Company’s performance or payment to third parties, $67 million in letters of credit, principally associated with the Letter of Credit Line, were outstanding at June 30, 2015. The letters of credit primarily represent collateral for current and future automobile liability and workers’ compensation loss payments.

Contingent Lease Obligations

The Company remains subject to contingent obligations under certain real estate leases that were entered into by certain predecessor companies of a subsidiary prior to the Company's acquisition of the subsidiary. No liability has been recorded for any of these potential contingent obligations. See Note 17 to the consolidated financial statements contained in the Company’s 2014 Annual Report on Form 10-K for further details.

Settlements

In 2010, a purported class action entitled In re Celera Corp. Securities Litigation was filed in the United States District Court for the Northern District of California against Celera Corporation and certain of its directors and current and former officers. An amended complaint filed in October 2010 alleges that from April 2008 through July 22, 2009, the defendants made false and misleading statements regarding Celera's business and financial results with an intent to defraud investors. The complaint was further amended in 2011 to add allegations regarding a financial restatement. Celera and the director and officer defendants have reached an agreement to settle this action, which the court has preliminarily approved. The settlement is fully covered by insurance.

Legal Matters

The Company is involved in various legal proceedings. Some of the proceedings against the Company involve claims that could be substantial in amount.

In addition to the matters described below, in the normal course of business, the Company has been named, from time to time, as a defendant in various legal actions, including arbitrations, class actions and other litigation, arising in connection with the Company's activities as a provider of diagnostic testing, information and services. These legal actions may include lawsuits alleging negligence or other similar legal claims. These actions could involve claims for substantial compensatory and/or punitive damages or claims for indeterminate amounts of damages, and could have an adverse impact on the Company's client base and reputation.

The Company is also involved, from time to time, in other reviews, investigations and proceedings by governmental agencies regarding the Company's business, including, among other matters, operational matters, which may result in adverse judgments, settlements, fines, penalties, injunctions or other relief. The number of these reviews, investigations and proceedings has increased in recent years with regard to many firms in the healthcare services industry, including the Company.

In August 2011, the Company received a subpoena from the U.S. Attorney for the Northern District of Georgia seeking various business records, including records related to the Company's compliance program, certain marketing materials, certain product offerings, and test ordering and other policies. The Company is cooperating with the request.

In June 2010, the Company received a subpoena from the Florida Attorney General's Office seeking documents relating to the Company's pricing and billing practices as they relate to Florida’s Medicaid program. The Company cooperated with the requests. In November 2013, the State of Florida intervened as a plaintiff in a civil lawsuit, Florida ex rel. Hunter Laboratories LLC v. Quest Diagnostics Incorporated, et al., filed in Florida Circuit Court. The suit, originally filed by a competitor laboratory, alleges that the Company overcharged Florida’s Medicaid program. The Company's motion to dismiss the state's amended complaint was denied.         

In April 2015, a qui tam civil lawsuit entitled United States ex rel. Mayes v. Berkeley HeartLab, Inc., et al., filed in the U.S. District Court for the District of South Carolina, was unsealed. The complaint alleges that certain alleged business practices of the defendants violate the False Claims Act, and seeks monetary relief. The United States has intervened as a plaintiff as to Berkeley HeartLab, Inc., a subsidiary of the Company; the United States did not intervene as a plaintiff as to Quest Diagnostics Incorporated. Before the lawsuit was unsealed, Berkeley HeartLab and Quest Diagnostics Incorporated had received subpoenas, civil investigative demands and interrogatories related to the matter.

The federal or state governments may bring claims based on the Company's current practices, which it believes are lawful. In addition, certain federal and state statutes, including the qui tam provisions of the federal False Claims Act, allow private individuals to bring lawsuits against healthcare companies on behalf of government or private payers. The Company is aware of lawsuits, and from time to time has received subpoenas, related to billing practices based on the qui tam provisions of the Civil False Claims Act or other federal and state statutes, regulations or other laws. The Company understands that there may be other pending qui tam claims brought by former employees or other "whistle blowers" as to which the Company cannot determine the extent of any potential liability.

Management cannot predict the outcome of such matters. Although management does not anticipate that the ultimate outcome of such matters will have a material adverse effect on the Company's financial condition, given the high degree of judgment involved in establishing loss estimates related to these types of matters, the outcome of such matters may be material to the Company's results of operations or cash flows in the period in which the impact of such matters is determined or paid.

These matters are in different stages. Some of these matters are in their early stages. Matters may involve responding to and cooperating with various government investigations and related subpoenas. As of June 30, 2015, the Company does not believe that any losses related to the legal matters described above are probable. While the Company believes that a reasonable possibility exists that losses may have been incurred related to the legal matters described above, based on the nature and status of these matters, potential losses, if any, cannot be estimated.

Reserves for Legal Matters

Reserves for legal matters, other than those described above, totaled $16 million and $11 million at June 30, 2015 and December 31, 2014, respectively.

Reserves for General and Professional Liability Claims

As a general matter, providers of clinical testing services may be subject to lawsuits alleging negligence or other similar legal claims. These suits could involve claims for substantial damages. Any professional liability litigation could also have an adverse impact on the Company's client base and reputation. The Company maintains various liability insurance coverages for, among other things, claims that could result from providing, or failing to provide, clinical testing services, including inaccurate testing results, and other exposures. The Company's insurance coverage limits its maximum exposure on individual claims; however, the Company is essentially self-insured for a significant portion of these claims. Reserves for such matters, including those associated with both asserted and incurred but not reported claims, are established by considering actuarially determined losses based upon the Company's historical and projected loss experience. Such reserves totaled approximately $116 million and $113 million at June 30, 2015 and December 31, 2014, respectively. Management believes that established reserves and present insurance coverage are sufficient to cover currently estimated exposures. Management cannot predict the outcome of any claims made against the Company. Although management does not anticipate that the ultimate outcome of any such proceedings or claims will have a material adverse effect on the Company's financial condition, given the high degree of judgment involved in establishing accruals for loss estimates related to these types of matters, the outcome may be material to the Company's results of operations or cash flows in the period in which the impact of such claims is determined or paid.