Fair Value Disclosures (Recurring Fair Value Measurements) (Details) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Assets, Fair Value Disclosure | | $ 40.3 | $ 29.2 | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 20.6 | 12.2 | | |
Cash and cash equivalents | | 238.7 | 199.4 | $ 142.7 | $ 226.3 |
Other assets | | 271.3 | 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 | [1] | 26.7 | 21.5 | | |
Cross Currency Interest Rate Contract [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Assets, Fair Value Disclosure | | 7.8 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 4.7 | | | |
Interest Rate Swaps [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 12.7 | 11.8 | | |
Foreign Currency Derivatives [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Assets, Fair Value Disclosure | | 5.8 | 7.7 | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 3.2 | 0.4 | | |
Cash and Cash Equivalents [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | 15.5 | 8.4 | | |
Other Assets [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Other assets | | 11.2 | 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 | [1] | 4.6 | 4.6 | | |
Fair Value, Inputs, Level 1 [Member] | Cross Currency Interest Rate Contract [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 | | | |
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swaps [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
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 | | 35.7 | 24.6 | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 20.6 | 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 | [1] | 22.1 | 16.9 | | |
Fair Value, Inputs, Level 2 [Member] | Cross Currency Interest Rate Contract [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Assets, Fair Value Disclosure | | 7.8 | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 4.7 | | | |
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swaps [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 12.7 | 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 | | 5.8 | 7.7 | | |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | | 3.2 | 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] | Cross Currency Interest Rate Contract [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 | | | |
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swaps [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
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 ($15.5 million and $8.4 million as of June 30, 2015 and December 31, 2014, respectively) and other assets ($11.2 million and $13.1 million as of June 30, 2015 and December 31, 2014, respectively). | |