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Balance Sheet Information - Narrative (Details) - USD ($) $ in Millions | Sep. 28, 2018 | Dec. 31, 2017
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Assets held-for-sale | $ 30.8 | $ 5.3
Accrued pension liability | 109.4 | 109.3
Current portion accrued pension liability | $ 0.3 | 0.2
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Proceeds from sale of assets held-for-sale |  | $ 5.5

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