Other Assets and Other Liabilities (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Components of Other Assets reported on the consolidated balance sheets
Inventory		$ 68.4	$ 63.7
Office furniture, fixtures and other equipment, net of accumulated depreciation		35.4	34.3
Assets for Plan Benefits, Defined Benefit Plan		11.0	4.4
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Net		2.6	3.1
Assets Held-for-sale, Long Lived, Fair Value Disclosure		3.4	1.3
Prepaid items		(22.0)	(10.0)
Derivative asset	[1]	8.5	4.9
Other		87.5	84.4
Total		$ 238.8	$ 206.1

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