Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
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	$ 1.4	$ 1.7	$ 5.5	$ 6.3
Interest cost	3.0	3.1	9.2	9.8
Expected return on plan assets	(4.5)	(4.6)	(13.6)	(13.9)
Amortization [Abstract]
Prior service cost	0.5	0.2	1.7	0.6
Recognized net actuarial (gain)/loss	2.1	2.5	6.3	7.6
Net periodic benefit cost	2.5	2.9	9.1	10.4
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	10.0		10.0
Company contribution to benefit plans			5.3
Other Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0.1	0.1	0.2	0.3
Interest cost	0.1	0.1	0.2	0.3
Amortization [Abstract]
Prior service cost	(0.8)	(0.8)	(2.3)	(2.3)
Recognized net actuarial (gain)/loss	(0.1)	(0.1)	(0.2)	(0.2)
Net periodic benefit cost	(0.7)	$ (0.7)	(2.1)	$ (1.9)
Employer Contributions [Abstract]
Expected company contribution to its benefit plans	$ 0.6		0.6
Company contribution to benefit plans			$ 0.1