Other (Expense) Income, Net (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Nonoperating Income (Expense) [Abstract]
Total other expense, net	$ 0.6	$ 46.6	$ 10.1	$ 40.0
Loss on early extinguishment of debt	0	(45.2)	(10.4)	(45.2)
Gains (losses) on sales of businesses and investments	0.1	(0.8)	1.2	1.9
Vendor discounts and credit adjustments	0.3	0.1	2.0	0.6
Other (expense) income, net	$ (1.0)	$ (0.7)	$ (2.9)	$ 2.7