Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Summary of reserves associated with indemnity obligations

The table below provides a summary of reserves associated with the Kaiser indemnity obligations from December 31, 2011, through June 30, 2012:

	Indemnity Obligations
	Purchased tax credits indemnity reserve			Tax, civil and labor indemnity reserve			Total indemnity reserves
	(In millions)
Balance at December 31, 2011	$	21.5		$	9.1		$	30.6
Changes in estimates	—			—			—
Foreign exchange transaction impact	(1.5		)	(0.7		)	(2.2		)
Balance at June 30, 2012	$	20.0		$	8.4		$	28.4