Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Benefit Plans [Abstract]
Maximum percentage of total benefit obligation for international pension plans	25.00%		25.00%
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	$ 2.0	$ 2.1	$ 3.9	$ 4.1
Interest cost	3.0	3.1	6.1	6.2
Expected return on plan assets	(4.8)	(4.6)	(9.6)	(9.1)
Amortization [Abstract]
Prior service cost	0.1	0.6	0.2	1.2
Recognized net actuarial (gain) loss	2.7	2.1	5.5	4.2
Net periodic benefit cost	3.0	3.3	6.1	6.6
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	20.0		20.0
Company contribution to benefit plans			12.2
Other Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0.1	0.1	0.1	0.2
Interest cost	0.0	0.1	0.1	0.1
Amortization [Abstract]
Prior service cost	(0.2)	(0.8)	(0.4)	(1.5)
Recognized net actuarial (gain) loss	(0.2)	(0.1)	(0.4)	(0.2)
Net periodic benefit cost	(0.3)	$ (0.7)	(0.6)	$ (1.4)
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	$ 0.5		0.5
Company contribution to benefit plans			$ 0.1