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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Jun. 26, 2022 | Jun. 27, 2021 | Jun. 26, 2022 | Jun. 27, 2021 | Dec. 26, 2021
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |  |
Contract assets, net change |  |  |  | $ 23.6 |  |
Contract liabilities, net change |  |  |  | 1.1 |  |
Revenue recognized |  | $ 14.8 | $ 5.9 | 36.0 | $ 22.9 |
Contract assets |  | 214.4 |  | 214.4 |  | $ 190.8
Litigation related charges |  | 5.5 |  | 5.5 | $ 0.0 |
Unmanned Systems |  |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |  |
Negotiation and settlement with the customer |  | 5.6 |  | 5.6 |  |
Litigation related charges |  | 5.5 |  | 5.5 |  |
Unbilled Revenues | T for C |  |  |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |  |  |
Contract assets |  | 4.8 |  | 4.8 |  |
Amount agreed to settlement | $ 6.0 |  |  |  |  |
Negotiation and settlement with the customer |  | $ 4.8 |  | $ 4.8 |  |

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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130533-203044 + Details
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