Fair Value Disclosures (Non-Pension Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012		Dec. 31, 2011		Mar. 31, 2011	Dec. 31, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 47.7		$ 55.9
Liabilities	0.5
Cash and cash equivalents	190.1		170.2		139.7	139.6
Other assets	375.3		429.4
Investment Securities, Including Mutual Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	13.9		17.7
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	33.3		35.8
Foreign Currency Derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0.5		2.4
Liabilities	0.5
Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0.9		5.1
Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other assets	13.0		12.6
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	7.8		7.3
Liabilities	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	7.8	[1]	7.3	[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	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	0		0
Liabilities	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	39.9		48.6
Liabilities	0.5
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	6.1	[1]	10.4	[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	33.3		35.8
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Derivatives [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0.5		2.4
Liabilities	0.5
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0		0
Liabilities	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	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	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	0		0
Liabilities	$ 0

[1] The values of investment securities, including mutual funds, are classified as cash and cash equivalents ($0.9 million and $5.1 million as of March 31, 2012 and December 31, 2011, respectively) and other assets ($13.0 million and $12.6 million as of March 31, 2012 and December 31, 2011, respectively). For mutual funds that are publicly traded, fair value is determined on the basis of quoted market prices and, accordingly, these investments have been classified as Level 1. Other investment securities are valued at the net asset value per share or unit multiplied by the number of shares or units held as of the measurement date and have been classified as Level 2.