INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2018

Intangible Assets, Net (Excluding Goodwill) [Abstract]

INTANGIBLE ASSETS DISCLOSURE

INTANGIBLE ASSETS

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

Intangible Assets	Mar 31, 2018							Dec 31, 2017
In millions	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Intangible assets with finite lives:
Licenses and developed technology	$	33	$	(33	)	$	—	$	33	$	(33	)	$	—
Software	78		(50		)	28		74		(49		)	25
Total intangible assets	$	111	$	(83	)	$	28	$	107	$	(82	)	$	25

Total estimated amortization expense for 2018 and the five succeeding fiscal years is as follows:

Estimated Amortization Expense
In millions
2018	$	6
2019	$	7
2020	$	7
2021	$	5
2022	$	3
2023	$	1