Pension and Other Postretirement Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Defined Benefit Plans	Mar. 31, 2014 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member]	Mar. 30, 2013 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member]	Mar. 31, 2014 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member] Defined Benefit Plans	Mar. 30, 2013 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member] Defined Benefit Plans	Mar. 31, 2014 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member] Other Postretirement Benefits	Mar. 30, 2013 Defined Benefit Plans and Other Postretirement Benefit, Cost [Member] Other Postretirement Benefits
Pension and other post-retirement benefits details:
Pension and other postretirement defined benefit plans, noncurrent liabilities	$ 436.5	$ 462.6
Net periodic pension costs under retirement plans and other postretirement benefits:
Service cost - benefits earned during the period				4.0	4.9	3.3	4.0	0.7	0.9
Interest cost on projected benefit obligation				43.8	41.2	42.1	39.4	1.7	1.8
Expected return on plan assets				(49.1)	(44.7)	(49.1)	(44.7)	0	0
Amortization of prior service cost (benefit)				(0.6)	(0.7)	0.2	0.2	(0.8)	(0.9)
Amortization of net actuarial loss (gain)				8.9	14.2	9.1	14.3	(0.2)	(0.1)
Less: expected participant contributions				(0.3)	(0.3)	(0.3)	(0.3)	0	0
Net periodic pension and OPEB cost				6.7	14.6	5.3	12.9	1.4	1.7
Contributions paid to defined benefit plans	14.9
Expected total defined benefit plan employer contributions			20
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year, High End of Range			$ 40