Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

7. Goodwill and Other Intangible Assets

Goodwill At December 31, 2017, the Company had $4.8 billion of goodwill allocated to the following reporting units: $4.3 billion to Exploration and Production, $411 million to WES Gathering and Processing, $5 million to WES Transportation, and $30 million to Other Midstream. During 2017, goodwill decreased $211 million primarily related to asset divestitures. See Note 3—Acquisitions, Divestitures, and Assets Held for Sale. The Company’s 2017 annual qualitative impairment assessment of goodwill indicated no impairment.

Other Intangible Assets Intangible assets and associated amortization expense were as follows at December 31:



millions	2017			2016
Gross carrying amount	$	1,013		$	1,013
Accumulated amortization	(140		)	(109		)
Net carrying amount	$	873		$	904
Amortization expense	$	31		$	32

Intangible assets are primarily related to customer contracts associated with WES’s 2014 acquisition of Delaware Basin Midstream, LLC. These contracts are being amortized over 30 years. The annual aggregate amortization expense for intangible assets is expected to be $31 million each of the next five years.

- 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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