INTANGIBLE ASSETS (Notes)

12 Months Ended

Dec. 31, 2021

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Intangible Assets

INTANGIBLE ASSETS

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

Intangible Assets at Dec 31	2021						2020
In millions	Gross Carrying Amount		Accum Amort		Net		Gross Carrying Amount		Accum Amort		Net
Intangible assets with finite lives:
Developed technology	$	33	$	(33)	$	—	$	33	$	(33)	$	—
Software	83		(70)		13		80		(64)		16
Total intangible assets	$	116	$	(103)	$	13	$	113	$	(97)	$	16

The following table provides information regarding amortization expense:

Amortization Expense
In millions	2021		2020		2019
Software, included in "Cost of sales"	$	6	$	8	$	7

Total estimated amortization expense for the next five fiscal years, including amounts expected to be capitalized, is as follows:

Estimated Amortization Expense for Next Five Years
In millions
2022	$	5
2023	$	3
2024	$	2
2025	$	1
2026	$	1