Comprehensive Income (Loss) (Details Textual) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Comprehensive Income Loss (Textual) [Abstract]
Pension and OPEB liability adjustments during the period, tax amount	$ (7.9)	$ (11.7)	$ (35.9)	$ (37.5)
Gain (loss) on cash flow hedges, Tax amount	35.7	(37.7)	6.0	6.6
Deferred taxes of cumulative unrealized foreign currency translation gains	(1.7)		(1.7)		(1.7)
Deferred Taxes of Pension/OPEB Liability	459.2		459.2		495.1
Deferred taxes for accumulated gain (loss) on cash flow hedges	$ 1.4		$ 1.4		$ (4.6)