GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of 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, 2019 and 2018 were as follows:

	Retail		Group and Specialty		Healthcare Services		Total
	(in millions)
Balance at January 1, 2018	$	1,059	$	261	$	1,961	$	3,281
Acquisitions	476		—		140		616
Balance at December 31, 2018	1,535		261		2,101		3,897
Acquisitions	—		—		31		31
Balance at December 31, 2019	$	1,535	$	261	$	2,132	$	3,928

Schedule 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, 2019 and 2018.

	Weighted Average Life	2019						2018
		Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
		(in millions)
Other intangible assets:
Customer contracts/relationships	8.7 years	$	646	$	496	$	150	$	646	$	434	$	212
Trade names and technology	6.4 years	84		84		—		84		83		1
Provider contracts	11.8 years	70		44		26		68		37		31
Noncompetes and other	7.3 years	29		28		1		29		28		1
Total other intangible assets	8.7 years	$	829	$	652	$	177	$	827	$	582	$	245

Schedule of Estimate of 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,
2020	$	68
2021	34
2022	31
2023	18
2024	11