Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets

Goodwill by Segment

	Pharmacy
In millions	Services		Retail/LTC		Total
Balance, December 31, 2016	$	21,637	$	16,612	$	38,249
Acquisitions		—		52		52
Foreign currency translation adjustments		—		3		3
Impairment		—		(135)		(135)
Balance, September 30, 2017	$	21,637	$	16,532	$	38,169

Summary of the Company's intangible assets

	September 30, 2017						December 31, 2016
	Gross				Net			Gross				Net
	Carrying		Accumulated		Carrying			Carrying		Accumulated		Carrying
In millions	Amount		Amortization		Amount			Amount		Amortization		Amount
Trademark (indefinitely-lived)	$	6,398	$	—	$	6,398		$	6,398	$	—	$	6,398
Customer contracts and relationships and covenants not to compete		11,848		(5,345)		6,503			11,485		(4,802)		6,683
Favorable leases and other		1,151		(749)		402			1,123		(693)		430
	$	19,397	$	(6,094)	$	13,303		$	19,006	$	(5,495)	$	13,511