Short-Term Borrowings And Long-Term Debt (Components Of Short-Term Borrowings And Long-Term Debt) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Securitization of accounts receivable	$ 0	$ 90.0
Various debt due to international banks	2.6	0
Total short-term borrowings	2.6	90.0
Less: Discount	(0.3)	(0.3)
Net long-term debt	249.7	249.7
3.35% Senior Notes Due December 15, 2015 [Member]
Debt Instrument [Line Items]
3.35% Senior notes due December 15, 2015	$ 250.0	$ 250.0
Interest rate of debt	3.35%
Maturity date of debt	Dec. 15, 2015