GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule 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, 2023	$	7,294	$	1,486	$	8,780
Additions/adjustments	9		—		9
Foreign currency impact	(23)		20		(3)
Balance at September 30, 2024	$	7,280	$	1,506	$	8,786

Schedule of Intangible Assets of the Company, Other Than Goodwill and Trade Names

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

	September 30, 2024						December 31, 2023
In millions	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Backlog	$	1,433	$	(605)	$	828	$	1,431	$	(526)	$	905
Customer relationships	1,322		(481)		841		1,333		(431)		902
Acquired technology	1,296		(588)		708		1,283		(497)		786
Total	$	4,051	$	(1,674)	$	2,377	$	4,047	$	(1,454)	$	2,593

Schedule of Amortization Expense

Amortization expense for the five succeeding years is estimated to be as follows:

In millions
Remainder of 2024	$	70
2025	$	272
2026	$	267
2027	$	262
2028	$	261