Fair Value Disclosures (Recurring Fair Value Measurements) (Details) (USD $) | Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Dec. 31, 2012 |
In Millions, unless otherwise specified |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | $46.10 | | $47.30 | | ' | ' |
Derivative Asset, Fair Value, Gross Asset | 25.3 | | 26 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 24.7 | | 36.9 | | ' | ' |
Cash and cash equivalents | 132.6 | | 226.3 | | 197.4 | 183.8 |
Other assets | 273.4 | | 268.9 | | ' | ' |
Investment Securities, Including Mutual Funds [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 20.8 | | 21.3 | | ' | ' |
Interest Rate Swaps [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 19 | | 23.1 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 23.2 | | 35.5 | | ' | ' |
Foreign Currency Derivatives [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 6.3 | | 2.9 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1.5 | | 1.4 | | ' | ' |
Cash and Cash Equivalents [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Cash and cash equivalents | 6.4 | | 10.9 | | ' | ' |
Other Assets [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Other assets | 14.4 | | 10.3 | | ' | ' |
Fair Value, Inputs, Level 1 [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 8.7 | | 8.7 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Investment Securities, Including Mutual Funds [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 8.7 | [1] | 8.7 | [1] | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swaps [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 1 [Member] | Foreign Currency Derivatives [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 2 [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 37.4 | | 38.6 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 24.7 | | 36.9 | | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Investment Securities, Including Mutual Funds [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 12.1 | [1] | 12.6 | [1] | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | ' | | 23.1 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 23.2 | | 35.5 | | ' | ' |
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Derivatives [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 6.3 | | 2.9 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1.5 | | 1.4 | | ' | ' |
Fair Value, Inputs, Level 3 [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Investment Securities, Including Mutual Funds [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaps [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Derivatives [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Assets, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | | 0 | | ' | ' |
Other Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member] | ' | | ' | | ' | ' |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ' | | ' | | ' | ' |
Derivative Asset, Fair Value, Gross Asset | $19 | | $23.10 | | ' | ' |
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[1] | The values of investment securities, including mutual funds, are classified as cash and cash equivalents ($6.4 million and $10.9 million as of SeptemberB 30, 2014 and DecemberB 31, 2013, respectively) and other assets ($14.4 million and $10.3 million as of SeptemberB 30, 2014 and DecemberB 31, 2013, respectively). |