Fair Value Disclosures (Recurring Fair Value Measurements) (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2013 |
In Millions, unless otherwise specified |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Assets, Fair Value Disclosure | $31.70 | | $29.20 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 8 | | 12.2 | | | |
Cash and cash equivalents | 215.4 | | 199.4 | | 136.8 | 226.3 |
Other assets | 266.5 | | 262.2 | | | |
Investment Securities, Including Mutual Funds [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Assets, Fair Value Disclosure | 14.9 | | 21.5 | | | |
Interest Rate Swaps [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Assets, Fair Value Disclosure | 4.6 | | | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 5.2 | | 11.8 | | | |
Foreign Currency Derivatives [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Assets, Fair Value Disclosure | 12.2 | | 7.7 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 2.8 | | 0.4 | | | |
Cash and Cash Equivalents [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Cash and cash equivalents | 3.1 | | 8.4 | | | |
Other Assets [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Other assets | 11.8 | | 13.1 | | | |
Fair Value, Inputs, Level 1 [Member] | | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | | |
Assets, Fair Value Disclosure | 4.6 | | 4.6 | | | |
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 | 4.6 | [1] | 4.6 | [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 | | | | | |
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 | 27.1 | | 24.6 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 8 | | 12.2 | | | |
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 | 10.3 | [1] | 16.9 | [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 | 4.6 | | | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 5.2 | | 11.8 | | | |
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 | 12.2 | | 7.7 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 2.8 | | 0.4 | | | |
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 | | | | | |
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 | | | |
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[1] | The values of investment securities, including mutual funds, are classified as cash and cash equivalents ($3.1 million and $8.4 million as of MarchB 31, 2015 and DecemberB 31, 2014, respectively) and other assets ($11.8 million and $13.1 million as of MarchB 31, 2015 and DecemberB 31, 2014, respectively). |