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Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets by class

Intangible assets consisted of the following:



(In millions)	Gross Carrying Amount				Accumulated Amortization				Net Book Value
September 30, 2017	Gross Carrying Amount				Accumulated Amortization				Net Book Value
Customer related intangible assets	$	2,253			$	1,136			$	1,117
Acquired software and technology	587				452				135
Trade names	117				62				55
Capitalized software development costs	714				272				442
Purchased software	248				109				139
Total	$	3,919			$	2,031			$	1,888



(In millions)	Gross Carrying Amount				Accumulated Amortization				Net Book Value
December 31, 2016	Gross Carrying Amount				Accumulated Amortization				Net Book Value
Customer related intangible assets	$	2,200			$	1,043			$	1,157
Acquired software and technology	507				432				75
Trade names	117				57				60
Capitalized software development costs	641				233				408
Purchased software	230				97				133
Total	$	3,695			$	1,862			$	1,833