Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Change in Goodwill

Below is a summary of the changes in the carrying amount of goodwill by segment for the years ended December 31, 2018 and 2017:

In millions	Pharmacy Services		Retail/LTC			Health Care Benefits		Total
Balance at December 31, 2016	$	21,637	$	16,612		$	—	$	38,249
Acquisitions	182		203			—		385
Foreign currency translation adjustments	—		(2		)	—		(2		)
Impairments	—		(181		)	—		(181		)
Balance at December 31, 2017	21,819		16,632			—		38,451
Acquisitions	1,569		735			44,484		46,788
Foreign currency translation adjustments	—		(14		)	—		(14		)
Divestiture of RxCrossroads subsidiary	—		(398		)	—		(398		)
Impairments	—		(6,149		)	—		(6,149		)
Balance at December 31, 2018	$	23,388	$	10,806		$	44,484	$	78,678

Other intangible assets

The following table is a summary of the Company’s intangible assets as of December 31:

In millions, except weighted average life	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Life (years)
2018
Trademarks (indefinitely-lived)	$	10,498	$	—		$	10,498	N/A
Customer contracts/relationships and covenants not to compete	26,213		(6,349		)	19,864		14.8
Technology	1,060		(31		)	1,029		3.0
Provider networks	4,200		(19		)	4,181		20.0
Value of Business Acquired	590		(7		)	583		20.0
Favorable leases and other	1,177		(808		)	369		17.1
Total	$	43,738	$	(7,214	)	$	36,524	15.3
2017
Trademark (indefinitely-lived)	$	6,398	$	—		$	6,398	N/A
Customer contracts/relationships and covenants not to compete	12,341		(5,536		)	6,805		15.3
Favorable leases and other	1,190		(763		)	427		16.2
Total	$	19,929	$	(6,299	)	$	13,630	15.4

Estimated annual pretax amortization for other acquired intangible assets over the next five years

The projected annual amortization expense for the Company’s intangible assets for the next five years is as follows:

In millions
2019	$	2,563
2020	2,350
2021	2,253
2022	1,879
2023	1,844