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Restructuring - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended
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Jun. 29, 2019 | Jun. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 91.0 |
Carrying values in excess of estimated fair values | 3.6 |
Expected restructuring costs | 65.0 |
Employee termination costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 81.4 |
Fixed asset impairment charges |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 3.6 | $ 1.6
Contract termination costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 2.0 |
Other related costs |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 4.0 |
Cost of sales |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | 83.2 |
Selling, general and administrative expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring charges | $ 7.8 |

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