Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

	Interest Rate  2012		December 31,
Dollar amounts in millions			2012			2011
Debentures:
Senior secured notes, maturing 2017, interest rates fixed	13	%	$	—		$	189.6
Senior secured notes, maturing 2020, interest rates fixed	7.5	%	350.0			—
Bank credit facilities:
Chilean term credit facility, maturing 2019, interest rates fixed	UF+3.9%		39.3			40.5
Brazilian export financing facility, maturing 2017, interest rates fixed	6.65	%	10.0			10.0
Limited recourse notes payable:
Senior notes, payable 2012, interest rates fixed	7.1	%	—			7.9
Senior notes, payable 2013-2018, interest rates fixed	7.1 – 7.3%		112.0			112.0
Other financing:
Non-recourse notes payable 2018, interest rates variable	0.2	%	368.7			368.7
Other			0.5			0.4
Total			880.5			729.1
Less: current portion			(97.8		)	(13.2		)
Net long-term portion			$	782.7		$	715.9

Schedule of Maturities of Long-term Debt [Table Text Block]

The weighted average interest rate for all long-term debt at December 31, 2012 and 2011 was approximately 4.2 percent and 5.5 percent. Required repayment of principal for long-term debt is as follows:

Dollar amounts in millions
Year ended December 31,
2013	$	97.8
2014	7.6
2015	7.6
2016	7.6
2017	7.6
2018 and after	752.3
Total	$	880.5