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Financial Assets and Financial Liabilities Measured at Fair Value (Details 2) (Measured on a recurring basis, (Level 2), Interest-rate swap, USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Measured on a recurring basis \| (Level 2) \| Interest-rate swap
Fair values for derivatives
Derivative Liabilities	$ 5.3	$ 20.2

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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