GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in goodwill for the six months ended June 30, 2017 and for the year ended December 31, 2016 were as follows:



	June 30, 2017		December 31, 2016
Balance, beginning of period	$	6,000	$	5,905
Goodwill acquired during the period	80		95
Balance, end of period	$	6,080	$	6,000

Principally all of the Company’s goodwill as of June 30, 2017 and December 31, 2016 was associated with its DIS business.

For the six months ended June 30, 2017, goodwill acquired during the period was principally associated with the PHL acquisition (see Note 5). For the year ended December 31, 2016, goodwill acquired was principally associated with the acquisition of the outreach laboratory service business of Clinical Laboratory Partners, LLC. For details regarding the Company's 2016 acquisitions, see Note 5 to the consolidated financial statements in the Company's 2016 Annual Report on Form 10-K.

Intangible assets at June 30, 2017 and December 31, 2016 consisted of the following:



	Weighted Average Amortization Period (in years)	June 30, 2017							December 31, 2016
	Weighted Average Amortization Period (in years)	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Amortizing intangible assets:
Customer-related	18	$	1,004	$	(373	)	$	631	$	971	$	(346	)	$	625
Non-compete agreements	6	7		(5		)	2		6		(4		)	2
Technology	18	94		(42		)	52		93		(40		)	53
Other	9	103		(75		)	28		103		(70		)	33
Total	18	1,208		(495		)	713		1,173		(460		)	713

Intangible assets not subject to amortization:
Trade names		235		—			235		235		—			235
Other		1		—			1		1		—			1
Total intangible assets		$	1,444	$	(495	)	$	949	$	1,409	$	(460	)	$	949

Amortization expense related to intangible assets was $18 million and $17 million for the three months ended June 30, 2017 and 2016, respectively. For the six months ended June 30, 2017 and 2016, amortization expense related to intangible assets was $35 million and $36 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, 2017 is as follows:



Year Ending December 31,
Remainder of 2017	$	36
2018	67
2019	67
2020	66
2021	60
2022	57
Thereafter	360
Total	$	713

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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