Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 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	$ 2.1	$ 2.4	$ 4.1	$ 4.7
Interest cost	3.1	3.4	6.2	6.8
Expected return on plan assets	(4.6)	(4.7)	(9.1)	(9.3)
Amortization [Abstract]
Prior service cost	0.6	0.2	1.2	0.4
Recognized net actuarial (gain)/loss	2.1	2.5	4.2	5.1
Net periodic benefit cost	3.3	3.8	6.6	7.7
Employer Contributions [Abstract]
Expected company contribution to its benefit plans			8.0
Company contribution to benefit plans			3.1
Other Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	0.1	0.1	0.2	0.2
Interest cost	0.1	0.1	0.1	0.2
Amortization [Abstract]
Prior service cost	(0.8)	(0.7)	(1.5)	(1.5)
Recognized net actuarial (gain)/loss	(0.1)	(0.1)	(0.2)	(0.1)
Net periodic benefit cost	$ (0.7)	$ (0.6)	(1.4)	$ (1.2)
Employer Contributions [Abstract]
Expected company contribution to its benefit plans			0.6
Company contribution to benefit plans			$ 0.2