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Balance Sheet Details - Accounts Receivable and Unbilled Receivables (Details) - USD ($) $ in Millions | Dec. 29, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
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 |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total U.S. Government contract receivables | 72.8 | 92.0
Billed |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total current accounts receivable | 118.5 | 129.8
Billed | U.S. Government |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total U.S. Government contract receivables | 11.6 | 21.0
Unbilled |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total current accounts receivable | 206.4 | 200.5
Unbilled | U.S. Government |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total U.S. Government contract receivables | $ 61.2 | $ 71.0

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