GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Change in the Carrying Amount of Goodwill by Segment

The change in the carrying amount of goodwill by segment is as follows:

In millions	Freight Segment		Transit Segment		Total
Balance at December 31, 2020	$	6,872	$	1,613	$	8,485
Additions	214		15		229
Foreign currency impact	(13)		(114)		(127)
Balance at December 31, 2021	$	7,073	$	1,514	$	8,587
Additions	35		—		35
Foreign currency impact	(23)		(91)		(114)
Balance at December 31, 2022	$	7,085	$	1,423	$	8,508

Summary of Intangible Assets of the Company, Other Than Goodwill and Trademarks

Intangible assets of the Company, other than goodwill and trade names, consist of the following:

	December 31, 2022						December 31, 2021
In millions	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Backlog	$	1,425	$	(415)	$	1,010	$	1,423	$	(309)	$	1,114
Customer relationships	1,274		(362)		912		1,310		(331)		979
Acquired technology	1,273		(395)		878		1,311		(334)		977
Total	$	3,972	$	(1,172)	$	2,800	$	4,044	$	(974)	$	3,070

Summary of Estimated Amortization Expense Five Succeeding Years

Estimated amortization expense for the five succeeding years is as follows (in millions):

2023	$	292
2024	$	282
2025	$	266
2026	$	261
2027	$	257