INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2017

Intangible Assets, Net (Excluding Goodwill) [Abstract]

INTANGIBLE ASSETS DISCLOSURE

INTANGIBLE ASSETS

The following table provides information regarding the Corporation’s intangible assets:

Intangible Assets	At March 31, 2017							At December 31, 2016
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and intellectual property	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	72		(46		)	26		70		(45		)	25
Total intangible assets	$	105	$	(79	)	$	26	$	103	$	(78	)	$	25

Total estimated amortization expense for 2017 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense In millions
2017	$	4
2018	$	6
2019	$	6
2020	$	5
2021	$	3
2022	$	2