Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The carrying amounts of goodwill as of March 31, 2024 and December 31, 2023 by reportable segment are as follows (in millions):

	As of March 31, 2024
	KGS		US		Total
Gross value	$	683.6	$	138.6	$	822.2
Less accumulated impairment	239.5		13.8		253.3
Net	$	444.1	$	124.8	$	568.9

	As of December 31, 2023
	KGS		US		Total
Gross value	$	683.6	$	138.8	822.4
Less accumulated impairment	239.5		13.8		253.3
Net	$	444.1	$	125.0	$	569.1

Schedule of Intangible Assets (Finite-Lived)

The following table sets forth information for finite-lived and indefinite-lived intangible assets (in millions): 

	As of March 31, 2024						As of December 31, 2023
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	80.9	$	(63.4)	$	17.5	$	80.9	$	(62.8)	$	18.1
Contracts and backlog	53.1		(39.9)		13.2		53.1		(38.8)		14.3
Developed technology and technical know-how	33.7		(28.5)		5.2		33.7		(28.2)		5.5
Trade names	3.8		(2.8)		1.0		3.8		(2.7)		1.1
In-process research and development	16.8		(0.4)		16.4		16.8		(0.3)		16.5
Total finite-lived intangible assets	188.3		(135.0)		53.3		188.3		(132.8)		55.5
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	195.2	$	(135.0)	$	60.2	$	195.2	$	(132.8)	$	62.4

Schedule of Intangible Assets (Indefinite-Lived)

The following table sets forth information for finite-lived and indefinite-lived intangible assets (in millions): 

	As of March 31, 2024						As of December 31, 2023
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	80.9	$	(63.4)	$	17.5	$	80.9	$	(62.8)	$	18.1
Contracts and backlog	53.1		(39.9)		13.2		53.1		(38.8)		14.3
Developed technology and technical know-how	33.7		(28.5)		5.2		33.7		(28.2)		5.5
Trade names	3.8		(2.8)		1.0		3.8		(2.7)		1.1
In-process research and development	16.8		(0.4)		16.4		16.8		(0.3)		16.5
Total finite-lived intangible assets	188.3		(135.0)		53.3		188.3		(132.8)		55.5
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	195.2	$	(135.0)	$	60.2	$	195.2	$	(132.8)	$	62.4

Schedule of Future Amortization Expense of Acquired Intangibles

The estimated future amortization expense of acquired intangible assets with finite lives as of March 31, 2024 is as follows (in millions):

	Amount
2024	$	7.1
2025	9.7
2026	9.1
2027	7.3
2028	4.5
Thereafter	15.6
Total	$	53.3