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Comprehensive Income, Reclassification Out of Accumulated Other Comprehensive Loss (Details) - Pension Costs [Member] - Reclassification out of Accumulated Other Comprehensive Loss [Member] - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jul. 01, 2018 | Jun. 30, 2019 | Jul. 01, 2018
Amortization of pension items [Abstract] |  |  |  |
Pre-tax amount | $ 2.2 | $ 2.4 | $ 4.4 | $ 4.9
Tax | (0.5) | (0.5) | (1.1) | (1.2)
Net of tax | $ 1.7 | $ 1.9 | $ 3.3 | $ 3.7

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