Pensions and Postretirement Benefits Other than Pensions (Components of Net Periodic Postretirement Benefit Cost) (Details) (Postretirement Benefit Costs [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Service cost	$ 1.3	$ 1.7
Interest cost	7.3	6.7
Net amortization of prior service gains	(2.2)	(2.6)
Net amortization of plan net actuarial losses	0	2.7
Total	6.4	8.5
Segment, Continuing Operations [Member]
Total	4.2	5.3
Discontinued Operations [Member]
Total	$ 2.2	$ 3.2