Fair Value Measurements (Financial Assets And Liabilities Carried At Fair Value) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets	$ 329.5	[1]	$ 287.0
Deferred compensation plans, Liabilities	64.5		58.2
Currency swap agreement, Liabilities	24.9	[1]	53.9
Quoted Prices in Active Market (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities, Assets	329.5		287.0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred compensation plans, Liabilities	64.5		58.2
Currency swap agreement, Liabilities	$ 24.9		$ 53.9

[1] Effective January 1, 2012, the Company is required to disclose, on a prospective basis, the level within the fair value hierarchy at which the fair values of the financial instruments are categorized. As of December 31, 2012, available-for-sale securities and short and long-term borrowings were categorized as level 1, while the currency swap agreement was categorized as level 2.