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Pension Plans - Schedule of Net Benefit Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Retirement Benefits [Abstract]
Interest cost	$ 2.7	$ 2.7
Expected return on plan assets	(3.8)	(4.4)
Amortization of net actuarial loss	0.7	0.6
Amortization of prior service credit	(0.1)	(0.1)
Net periodic benefit credit	(0.5)	(1.2)
Total charge for defined contribution plans	1.2	1.5
Total charge for pension plans	$ 0.7	$ 0.3

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Defined Benefit Plan And Defined Contribution Plan, Total Charge (Cost)

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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