GOODWILL AND OTHER INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

The carrying amount of goodwill for our reportable segments has been retrospectively adjusted to conform to the 2017 segment reclassification as discussed in Note 1. Changes in the carrying amount of goodwill for our reportable segments for the years ended December 31, 2017 and 2016 were as follows:



	Retail		Group and Specialty		Healthcare Services		Total
	(in millions)
Balance at January 1, 2016	$	1,059	$	261	$	1,945	$	3,265
Acquisitions	—		—		7		7
Balance at December 31, 2016	1,059		261		1,952		3,272
Acquisitions	—		—		9		9
Balance at December 31, 2017	$	1,059	$	261	$	1,961	$	3,281

The following table presents details of our other intangible assets included in other long-term assets in the accompanying consolidated balance sheets at December 31, 2017 and 2016.



	Weighted Average Life	2017						2016
	Weighted Average Life	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
		(in millions)
Other intangible assets:
Customer contracts/relationships	9.8 years	$	566	$	401	$	165	$	566	$	347	$	219
Trade names and technology	8.2 years	104		84		20		104		69		35
Provider contracts	11.9 years	68		30		38		51		29		22
Noncompetes and other	8.1 years	32		29		3		32		28		4
Total other intangible assets	9.7 years	$	770	$	544	$	226	$	753	$	473	$	280

Amortization expense for other intangible assets was approximately $75 million in 2017, $77 million in 2016, and $93 million in 2015. The following table presents our estimate of amortization expense for each of the five next succeeding fiscal years:



	(in millions)
For the years ending December 31,
2018	$	64
2019	54
2020	52
2021	19
2022	16

- 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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