Losses (Gains) and Other Expenses, net (Tables)

12 Months Ended

Dec. 31, 2011

Losses (Gains) and Other Expenses, net [Abstract]

Summary of Losses (Gains) and Other Expenses, net

	For the Years Ended December 31,
	2011			2010			2009
Realized losses (gains) on settled futures contracts	$	(0.1	)	$	(1.5	)	$	3.7
Net change in unrealized losses (gains) on unsettled futures contracts		3.8			(0.6	)		(7.1	)
Gain on disposal of a business, net		(0.1	)		(0.1	)		(4.1	)
Losses (gains) on disposals of fixed assets		(0.8	)		0.1			(0.1	)
Special legal contingency charge(1)		(0.4	)		6.8			—
Acquisition expenses(2)		1.0			4.8			—
Foreign currency exchange losses		1.4			0.4			0.7
Other items, net		0.2			0.3			0.3
Losses (gains) and other expenses, net	$	5.0		$	10.2		$	(6.6	)