Other Assets and Other Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Components of Other Assets reported on the consolidated balance sheets
Inventory	$ 45.8	$ 49.1
Office furniture, fixtures and other equipment, net of accumulated depreciation	34.9	35.8
Derivatives	6.0	10.2
Deferred financing costs	18.6	14.8
Assets held for sale	6.9	6.5
Assets held for sale	12.4	9.5
Prepaid pension	32.9	0
Prepaid items	10.3	10.1
Other	57.7	50.7
Total	$ 225.5	$ 186.7