| Goodwill - Narrative (Details) $ in Millions | 3 Months Ended | 6 Months Ended | |
|---|---|---|---|
| Jun. 27, 2020  USD ($) | Mar. 28, 2020  reporting_unit | Jun. 27, 2020  USD ($)  reporting_unit | |
| Goodwill | |||
| Number of reporting units | 8 | ||
| Number of reporting units impaired | 4 | ||
| Aerospace Segment | |||
| Goodwill | |||
| Impairment loss | $ | $ 12.6 | $ 86.3 | |
| X | ||||||||||
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- Definition Number Of Reporting Units Impaired No definition available. 
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| X | ||||||||||
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
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- Definition Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment. No definition available. 
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| X | ||||||||||
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- Details 
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