Other Assets and Other Liabilities (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Components of Other Liabilities reported on the consolidated balance sheets
Accrued operating lease expense	$ 43.4	$ 48.6
Pension and other post-retirement liabilities	86.6	68.2
Deferred gains on sale-leasebacks	49.0	53.3
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3.6	3.9
Environmental reserves	13.8	14.7
Deferred income	5.6us-gaap_DeferredRevenue	6.7us-gaap_DeferredRevenue
Derivatives	7.5us-gaap_DerivativeLiabilities	3.6us-gaap_DerivativeLiabilities
Other Liabilities, Noncurrent	36.6us-gaap_OtherLiabilitiesNoncurrent	31.6us-gaap_OtherLiabilitiesNoncurrent
Total	$ 246.1us-gaap_OtherLiabilities	$ 230.6us-gaap_OtherLiabilities

Accrued operating lease expense current and non current.

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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