Note 8. Intangible Assets, Goodwill and Other (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

The changes in the net carrying amount of goodwill by reportable segment are as follows:

	Railcar Leasing and Management Services Group		Rail Products Group		Total
	(in millions)
As of December 31, 2022	$	7.1	$	188.8	$	195.9
Acquisitions and purchase price allocation adjustments (Note 2)	26.8		—		26.8
Divestitures (Note 2)	(1.2)		—		(1.2)
As of December 31, 2023	$	32.7	$	188.8	$	221.5

Schedule of Intangible Assets and Goodwill

A summary of our intangible assets, which are included in other assets in our Consolidated Balance Sheets, is as follows:

		December 31, 2023						December 31, 2022
	Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(in years)	(in millions)
Indefinite-lived intangible assets:
Trade names	*	$	11.2	$	—	$	11.2	$	4.4	$	—	$	4.4
Finite-lived intangible assets:
Customer relationships & backlog	14.3	53.6		(5.8)		47.8		35.4		—		35.4
Patents, developed technology, and other	9.3	36.6		(9.4)		27.2		25.9		(5.4)		20.5
Lease-related intangibles	10.8	35.9		(15.4)		20.5		31.6		(12.9)		18.7
Total finite-lived intangible assets		126.1		(30.6)		95.5		92.9		(18.3)		74.6
Total intangible assets		$	137.3	$	(30.6)	$	106.7	$	97.3	$	(18.3)	$	79.0

*Not subject to amortization

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of December 31, 2023, expected amortization expense related to our finite-lived intangible assets for the next five years is as follows:

	Expected Amortization Expense
	(in millions)
2024	$	10.4
2025	$	9.8
2026	$	9.7
2027	$	9.1
2028	$	6.6