Supplementary Data Other (Expense) Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Disposal Group, Not Discontinued Operation, Disposal Disclosures [Abstract]
Assets held for sale	$ 5.3		$ 5.3
Liabilities held for sale	5.3		5.3
Other Income and Expenses [Abstract]
Losses on sales of businesses and investments	(2.2)	$ (0.1)	(18.5)	$ (0.2)
Other income, net	2.1	0.6	1.3	1.0
Total other (expense) income, net	$ (0.1)	$ 0.5	$ (17.2)	$ 0.8