GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill By Reportable Segments

Changes in the carrying amount of goodwill for our reportable segments for the nine months ended September 30, 2017 were as follows:

	Retail		Group and Specialty		Healthcare Services		Total
	(in millions)
Balance at January 1, 2017	$	1,059	$	261	$	1,952	$	3,272
Acquisitions	—		—		9		9
Balance at September 30, 2017	$	1,059	$	261	$	1,961	$	3,281

Details of Intangible Assets Included in Other Long-Term Assets

The following table presents details of our other intangible assets included in other long-term assets in the accompanying condensed consolidated balance sheets at September 30, 2017 and December 31, 2016.

		September 30, 2017						December 31, 2016
	Weighted Average Life	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
		($ in millions)
Other intangible assets:
Customer contracts/ relationships	9.8 years	$	566	$	388	$	178	$	566	$	347	$	219
Trade names and technology	8.2 years	104		77		27		104		69		35
Provider contracts	14.1 years	51		33		18		51		29		22
Noncompetes and other	8.1 years	33		29		4		32		28		4
Total other intangible assets	9.8 years	$	754	$	527	$	227	$	753	$	473	$	280

Schedule of Estimated Amortization Expense

The following table presents our estimate of amortization expense for 2017 and each of the five next succeeding years:

	(in millions)
For the years ending December 31,
2017	$	71
2018	63
2019	52
2020	48
2021	14
2022	11