Balance Sheet Details (Tables)

12 Months Ended

Dec. 29, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

Receivables including amounts due under long-term contracts are summarized as follows (in millions):

	December 29, 2024		December 31, 2023
Billed, current	$	118.5	$	129.8
Unbilled, current	206.4		200.5
Total current accounts receivable	324.9		330.3
Allowance for doubtful accounts	(1.1)		(1.1)
Total accounts receivable and unbilled receivables, net	$	323.8	$	329.2

U.S. Government contract receivables where the Company is the prime contractor included in accounts receivable, net (in millions):

	December 29, 2024		December 31, 2023
Billed	$	11.6	$	21.0
Unbilled	61.2		71.0
Total U.S. Government contract receivables	$	72.8	$	92.0

Schedule of Inventory

Inventoried costs (in millions): 

	December 29, 2024		December 31, 2023
Raw materials	$	90.1	$	78.0
Work in process	67.7		72.9
Finished goods	4.3		5.3
Total inventoried costs	$	162.1	$	156.2

Schedule of Property, Plant and Equipment

Assets are depreciated predominately using the straight-line method, with the following lives:

	Years
Buildings and improvements	15 – 39
Machinery and equipment	3 – 20
Computer equipment and software	1 – 10
Vehicles, furniture, and office equipment	5
Leasehold improvements	Shorter of useful life or length of lease

Property, plant and equipment, net (in millions)

	December 29, 2024		December 31, 2023
Finance lease right of use assets	$	71.0	$	56.1
Land and buildings	41.3		40.8
Computer equipment and software	63.0		51.4
Machinery and equipment	178.2		152.8
Furniture and office equipment	8.6		8.2
Leasehold improvements	30.8		24.0
Construction in progress	81.8		69.7
Property and equipment	474.7		403.0
Accumulated depreciation and amortization	(186.5)		(159.4)
Total property and equipment, net	$	288.2	$	243.6