Other Assets and Other Liabilities (Details 1) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Components of Other Liabilities reported on the consolidated balance sheets
Accrued operating lease expense	$ 22.2	$ 19.3
Pension and other post-retirement liabilities	82.3	94.6
Deferred gains on sale-leasebacks	54.0	44.8
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	2.8	3.8
Environmental reserves	14.9	13.2
Deferred income	3.8	7.7
Derivatives	0.1	3.8
Other Liabilities, Noncurrent	42.0	33.4
Total	$ 222.1	$ 220.6