Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Benefit Plans [Abstract]
Maximum percentage of total benefit obligation for international pension plans	25.00%		25.00%
Amortization [Abstract]
Pension settlement loss	$ 3.6	$ 0.0	$ 3.6	$ 0.0
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	1.9	1.4	5.8	5.5
Interest cost	3.2	3.0	9.3	9.2
Expected return on plan assets	(5.0)	(4.5)	(14.6)	(13.6)
Amortization [Abstract]
Prior service cost	0.1	0.5	0.3	1.7
Recognized net actuarial (gain) loss	2.9	2.1	8.4	6.3
Pension settlement loss	3.6	0.0	3.6	0.0
Net periodic benefit cost	6.7	2.5	12.8	9.1
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	24.0		24.0
Company contribution to benefit plans			18.6
Other Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0.1	0.1	0.2	0.2
Interest cost	0.0	0.1	0.1	0.2
Amortization [Abstract]
Prior service cost	(0.2)	(0.8)	(0.7)	(2.3)
Recognized net actuarial (gain) loss	(0.2)	(0.1)	(0.5)	(0.2)
Net periodic benefit cost	(0.3)	$ (0.7)	(0.9)	$ (2.1)
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	$ 0.5		0.5
Company contribution to benefit plans			$ 0.1