Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 25, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The carrying amounts of goodwill as of December 25, 2022 and December 26, 2021 by reportable segment are as follows (in millions):

	As of December 25, 2022
	US		KGS		Total
Gross value	$	127.9	$	683.6	$	811.5
Less accumulated impairment	13.8		239.5		253.3
Net	$	114.1	$	444.1	$	558.2

	As of December 26, 2021
	US		KGS		Total
Gross value	$	127.9	$	619.3	$	747.2
Less accumulated impairment	13.8		239.5		253.3
Net	$	114.1	$	379.8	$	493.9

Schedule of Acquired Finite-Lived Intangible Assets

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

	As of December 25, 2022						As of December 26, 2021
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	80.9	$	(60.1)	$	20.8	$	76.5	$	(57.6)	$	18.9
Contracts and backlog	39.1		(36.3)		2.8		34.9		(33.1)		1.8
Developed technology and technical know-how	33.7		(27.0)		6.7		31.4		(25.8)		5.6
Trade names	3.8		(2.3)		1.5		2.7		(2.0)		0.7
In-process research and development	16.8		(0.3)		16.5		9.5		(0.2)		9.3
Total finite-lived intangible assets	174.3		(126.0)		48.3		155.0		(118.7)		36.3
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	181.2	$	(126.0)	$	55.2	$	161.9	$	(118.7)	$	43.2

Schedule of Acquired Indefinite-Lived Intangible Assets

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

	As of December 25, 2022						As of December 26, 2021
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	80.9	$	(60.1)	$	20.8	$	76.5	$	(57.6)	$	18.9
Contracts and backlog	39.1		(36.3)		2.8		34.9		(33.1)		1.8
Developed technology and technical know-how	33.7		(27.0)		6.7		31.4		(25.8)		5.6
Trade names	3.8		(2.3)		1.5		2.7		(2.0)		0.7
In-process research and development	16.8		(0.3)		16.5		9.5		(0.2)		9.3
Total finite-lived intangible assets	174.3		(126.0)		48.3		155.0		(118.7)		36.3
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	181.2	$	(126.0)	$	55.2	$	161.9	$	(118.7)	$	43.2

Schedule of Future Amortization Expense of Finite-Lived Intangible Assets

The estimated future amortization expense of acquired intangible assets with finite lives as of December 25, 2022 is as follows (in millions):

Fiscal Year	Amount
2023	6.8
2024	5.9
2025	6.2
2026	5.6
2027	4.7
Thereafter	19.1
Total	$	48.3