Retirement and Post Retirement Plans (Schedule of Net Periodic Benefit Costs and Benefit Payments Expected Future Service) (Details) - USD ($)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 10,000,000	$ 2,500,000	$ 2,900,000
Interest cost	10,700,000	8,300,000	7,600,000
Expected return on plan assets	(11,500,000)	(9,200,000)	(8,700,000)
Amortization of net actuarial loss	4,300,000	2,300,000	4,100,000
Amortization of prior service cost	200,000	200,000	200,000
Net periodic benefit cost	13,700,000	4,100,000	6,100,000
Prior service cost	0.1	0.1	0.1
Net actuarial loss	2.8	1.3	2.5
Total recognized in OCI	2.9	$ 1.4	$ 2.6
2016	12,200,000
2017	12,700,000
2018	13,400,000
2019	14,400,000
2020	15,100,000
2021-2025	83,300,000
Postretirement Health Coverage [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	100,000
Interest cost	500,000
Net periodic benefit cost	600,000
2016	1,200,000
2017	1,400,000
2018	1,500,000
2019	1,600,000
2020	1,600,000
2021-2025	$ 7,100,000