Additional Balance Sheet Information (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Significant Accounting Policies / Additional Balance Sheet Information [Abstract]

Inventories

	June 30, 2012		December 31, 2011
Crude stockpile inventories	$	58.3	$	54.5
In-process and finished goods inventories		61.5		64.4
Other raw material, container, and supplies inventories		26.2		25.9
	$	146.0	$	144.8

Reclamation liability

	Six Months Ended June 30,
	2012			2011
Balance at beginning of period	$	9.3		$	7.5
Settlement of obligations		(3.2	)		(1.2	)
Liabilities incurred and accretion expense		2.9			2.0
Foreign currency		0.3			-
Balance at end of period	$	9.3		$	8.3