GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2015

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 years ended December 31, 2015 and 2014 were as follows:

	Retail		Group		Healthcare Services			Total
	(in millions)
Balance at January 1, 2014	$	1,069	$	385	$	1,799		$	3,253
Acquisitions	—		—		19			19
Dispositions	—		—		(40		)	(40		)
Subsequent payments/adjustments	—		—		(1		)	(1		)
Balance at December 31, 2014	1,069		385		1,777			3,231
Acquisitions	—		—		35			35
Dispositions	—		—		(1		)	(1		)
Balance at December 31, 2015	$	1,069	$	385	$	1,811		$	3,265

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 consolidated balance sheets at December 31, 2015 and 2014 and excludes Concentra amounts classified as held-for-sale as of December 31, 2014 for comparative purposes. Net other intangible assets associated with Concentra and classified as held-for-sale at December 31, 2014 were $132 million.

	Weighted Average Life	2015						2014
		Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
		(in millions)
Other intangible assets:
Customer contracts/relationships	9.8 years	$	566	$	292	$	274	$	657	$	326	$	331
Trade names and technology	8.3 years	104		54		50		115		50		65
Provider contracts	14.6 years	51		24		27		52		21		31
Noncompetes and other	8.2 years	32		26		6		41		28		13
Total other intangible assets	9.8 years	$	753	$	396	$	357	$	865	$	425	$	440

Schedule of Estimated Amortization Expense

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,:
2016	$	78
2017	71
2018	62
2019	51
2020	47