Acquired Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Acquired Intangible Assets Disclosure [Abstract]

Schedule of acquisition-related intangible assets

Identifiable acquisition-related intangible assets as of December 31, 2015 and 2014 were as follows (dollars in millions):

	Gross Carrying Amount		Accumulated Amortization			Net
December 31, 2015
Finite-Lived Intangible Assets:
Customer Contracts and Relationships	$	1,975	$	(932	)	$	1,043
Trademarks	55		(55		)	—
Patents and Developed Technology	230		(161		)	69
	2,260		(1,148		)	1,112
Indefinite-Lived Intangible Assets:
Trade Name	15		—			15
	$	2,275	$	(1,148	)	$	1,127
December 31, 2014
Finite-Lived Intangible Assets:
Customer Contracts and Relationships	$	1,977	$	(741	)	$	1,236
Trademarks	115		(47		)	68
Patents and Developed Technology	228		(133		)	95
	2,320		(921		)	1,399
Indefinite-Lived Intangible Assets:
Trade Name	15		—			15
	$	2,335	$	(921	)	$	1,414

Schedule of estimated amortization expense of acquired finite-lived intangible asset

As of December 31, 2015, estimated amortization expense for the Company’s finite-lived acquisition-related intangible assets over the next five years and thereafter is as follows (dollars in millions):

2016	$	212
2017	196
2018	193
2019	181
2020	166
Thereafter	164
	$	1,112