Intangibles (Tables)

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Change in the Carrying Amount of Goodwill by Segment

The change in the carrying amount of goodwill by segment for the six months ended June 30, 2019 is as follows:

In thousands	Freight Segment			Transit Segment			Total
Balance at December 31, 2018	$	713,391		$	1,683,153		$	2,396,544
Additions	5,754,115			15,420			5,769,535
Foreign currency impact	(11,687		)	(3,721		)	(15,408		)
Balance at June 30, 2019	$	6,455,819		$	1,694,852		$	8,150,671

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:

In thousands	June 30, 2019		December 31, 2018
Backlog, intellectual property, patents, and other intangibles, net of accumulated
amortization of $76,059 and $42,446	$	2,689,022	$	15,328
Customer relationships, net of accumulated amortization
of $183,933 and $158,533	1,048,774		531,761
Total	$	3,737,796	$	547,089

Amortization Expense

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

Remainder of 2019	$	130,967
2020	259,206
2021	259,117
2022	258,805
2023	258,174