Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 26, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The carrying amounts of goodwill as of December 26, 2021 and December 27, 2020 by reportable segment are as follows (in millions):

	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

	As of December 27, 2020
	US		KGS		Total
Gross value	$	127.6	$	609.6	$	737.2
Less accumulated impairment	13.8		239.5		253.3
Net	$	113.8	$	370.1	$	483.9

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 26, 2021						As of December 27, 2020
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	76.5	$	(57.6)	$	18.9	$	75.3	$	(55.7)	$	19.6
Contracts and backlog	34.9		(33.1)		1.8		33.4		(31.0)		2.4
Developed technology and technical know-how	31.4		(25.8)		5.6		29.9		(25.3)		4.6
Trade names	2.7		(2.0)		0.7		2.0		(1.9)		0.1
In-process research and development	9.5		(0.2)		9.3		9.4		—		9.4
Total finite-lived intangible assets	155.0		(118.7)		36.3		150.0		(113.9)		36.1
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	161.9	$	(118.7)	$	43.2	$	156.9	$	(113.9)	$	43.0

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 26, 2021						As of December 27, 2020
	Gross Value		Accumulated Amortization		Net Value		Gross Value		Accumulated Amortization		Net Value
Acquired finite-lived intangible assets:
Customer relationships	$	76.5	$	(57.6)	$	18.9	$	75.3	$	(55.7)	$	19.6
Contracts and backlog	34.9		(33.1)		1.8		33.4		(31.0)		2.4
Developed technology and technical know-how	31.4		(25.8)		5.6		29.9		(25.3)		4.6
Trade names	2.7		(2.0)		0.7		2.0		(1.9)		0.1
In-process research and development	9.5		(0.2)		9.3		9.4		—		9.4
Total finite-lived intangible assets	155.0		(118.7)		36.3		150.0		(113.9)		36.1
Indefinite-lived trade names	6.9		—		6.9		6.9		—		6.9
Total intangible assets	$	161.9	$	(118.7)	$	43.2	$	156.9	$	(113.9)	$	43.0

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 26, 2021 is as follows (in millions):

Fiscal Year	Amount
2022	5.0
2023	4.7
2024	3.9
2025	3.7
2026	3.5
Thereafter	15.5
Total	$	36.3

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