Fair Value Disclosures (Recurring Fair Value Measurements) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 37.8		$ 47.3
Financial and Nonfinancial Liabilities, Fair Value Disclosure	31.0		36.9
Cash and cash equivalents	136.8		226.3		174.2	183.8
Other assets	252.8		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	11.3		21.3
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	22.3		23.1
Financial and Nonfinancial Liabilities, Fair Value Disclosure	29.4		35.5
Foreign Currency Derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	4.2		2.9
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1.6		1.4
Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0.8		10.9
Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	10.5		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	8.8		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	8.8	[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
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	29.0		38.6
Financial and Nonfinancial Liabilities, Fair Value Disclosure	31.0		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	2.5	[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	22.3		23.1
Financial and Nonfinancial Liabilities, Fair Value Disclosure	29.4		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	4.2		2.9
Financial and Nonfinancial Liabilities, Fair Value Disclosure	1.6		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

[1] The values of investment securities, including mutual funds, are classified as cash and cash equivalents ($0.8 million and $10.9 million as of March 31, 2014 and December 31, 2013, respectively) and other assets ($10.5 million and $10.3 million as of March 31, 2014 and December 31, 2013, respectively).