INTANGIBLES

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLES

INTANGIBLESGoodwill and other intangible assets with indefinite lives are not amortized. Other intangibles with definite lives are amortized on a straight-line basis over their estimated economic lives. Goodwill and indefinite lived intangible assets are reviewed annually during the fourth quarter for impairment (See Note 2 “Summary of Significant Accounting Policies” included herein). Goodwill and indefinite lived intangible assets were not impaired at December 31, 2019 and 2018.

The change in the carrying amount of goodwill by segment for the year ended December 31, 2019 is as follows:

	Freight		Transit
In millions	Segment		Segment		Total
Balance at December 31, 2018	$	899.1	$	1,497.4	$	2,396.5
Additions	5,989.3		12.2		6,001.5
Foreign currency impact	(11.8)		(25.6)		(37.4)
Balance at December 31, 2019	$	6,876.6	$	1,484.0	$	8,360.6

As of December 31, 2019 and 2018, the Company’s trade names had a net carrying amount of $623.1 million and $582.8 million, respectively, and the Company believes these intangibles have indefinite lives, with the exception of the GE Transportation trade name, to which the Company has assigned a useful life of 5 years.

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

	December 31,
In millions	2019		2018
Intellectual property, patents, and other intangibles, net of accumulated amortization of $123.8 and $40.1	$	1,108.9	$	13.3
Backlog, net of accumulated amortization of $92.0 and $2.0	1,342.1		2.0
Customer relationships, net of accumulated amortization of $212.9 and $158.5	1,029.9		531.8
Total	$	3,480.9	$	547.1

The remaining weighted average useful lives of backlog, intellectual property, customer relationships, and other intangibles were 14 years, 9 years, 18 years, and 13 years, respectively. Amortization expense for intangible assets was $238.4 million, $39.8 million, and $36.5 million for the years ended December 31, 2019, 2018, and 2017, respectively.

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

2020	$	278.7
2021	277.7
2022	277.3
2023	276.8
2024	267.3