Noncontrolling Interests (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Noncontrolling interest
Balance at the beginning of the period			$ 385.9	$ 383.0
Earnings attributable to noncontrolling interest	54.8	51.5	190.1	158.5
Declaration of distribution payable			(58.8)	(45.9)
Effect of exchange rates changes			3.6	(8.6)
Balance at the end of the period	520.8	487.0	520.8	487.0
Distributions payable to noncontrolling interest:
Distribution payable to noncontrolling interest, balance at the beginning of the period			149.7	78.0
Declaration of distributions payable			58.8	45.9
Distributions to noncontrolling interest			(212.8)	(127.4)
Effect of exchange rates changes			4.3	3.5
CFL
Noncontrolling interest
Balance at the beginning of the period			16.7	17.4
Earnings attributable to noncontrolling interest			137.6	107.0
Effect of exchange rates changes			3.6	(8.6)
Balance at the end of the period	157.9	115.8	157.9	115.8
Distributions payable to noncontrolling interest:
Distribution payable to noncontrolling interest, balance at the beginning of the period			149.7	78.0
Distributions to noncontrolling interest			(154.0)	(81.5)
Effect of exchange rates changes			4.3	3.5
TNCLP
Noncontrolling interest
Balance at the beginning of the period			369.2	365.6
Earnings attributable to noncontrolling interest			52.5	51.5
Declaration of distribution payable			(58.8)	(45.9)
Balance at the end of the period	362.9	371.2	362.9	371.2
Distributions payable to noncontrolling interest:
Declaration of distributions payable			58.8	45.9
Distributions to noncontrolling interest			$ (58.8)	$ (45.9)