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Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets by class

Identifiable intangible assets consisted of the following:



(In millions)	Gross Carrying Amount				Accumulated Amortization				Net Book Value
September 30, 2019	Gross Carrying Amount				Accumulated Amortization				Net Book Value
Customer relationships	$	16,220			$	1,680			$	14,540
Acquired software and technology	2,227				556				1,671
Trade names	586				75				511
Capitalized software development costs	950				355				595
Purchased software	557				137				420
Total	$	20,540			$	2,803			$	17,737



(In millions)	Gross Carrying Amount				Accumulated Amortization				Net Book Value
December 31, 2018	Gross Carrying Amount				Accumulated Amortization				Net Book Value
Customer relationships	$	2,642			$	1,294			$	1,348
Acquired software and technology	591				490				101
Trade names	120				71				49
Capitalized software development costs	810				314				496
Purchased software	261				112				149
Total	$	4,424			$	2,281			$	2,143