Long-term Debt (Details) (USD $) In Millions, unless otherwise specified													12 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Senior Secured Notes Maturing 2017 [Member]	Dec. 31, 2011 Senior Secured Notes Maturing 2017 [Member]	Dec. 31, 2012 Senior Secure Note Maturing 2020 [Member]	May 01, 2012 Senior Secure Note Maturing 2020 [Member]	Dec. 31, 2012 Chilian Term Credit Facility Maturing 2019 [Member]	Dec. 31, 2011 Chilian Term Credit Facility Maturing 2019 [Member]	Dec. 31, 2012 Brazilian Term Credit Facility Maturing 2017 [Member]	Dec. 31, 2011 Brazilian Term Credit Facility Maturing 2017 [Member]	Dec. 31, 2012 Senior Notes Payable 2012 [Member]	Dec. 31, 2011 Senior Notes Payable 2012 [Member]	Dec. 31, 2012 Senior Notes Payable 2013 Thru 2018 [Member]	Dec. 31, 2011 Senior Notes Payable 2013 Thru 2018 [Member]	Dec. 31, 2012 Non Recourse Notes Payable 2018 [Member]	Dec. 31, 2011 Non Recourse Notes Payable 2018 [Member]	Dec. 31, 2012 Deferred Loss on Early Extinguishment of Debt [Member]
Debt Instrument [Line Items]
Amortization of Financing Costs and Discounts																	$ 4.5
Notes and Loans Payable [Abstract]
Notes payable	90.0	7.9	0	189.6	350.0		39.3	40.5	10.0	10.0	0	7.9	112.0	112.0	368.7	368.7
Debt Instrument, Interest Rate, Stated Percentage			13.00%		8.00%	7.50%	3.90%		6.65%		0.00%				0.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum													7.10%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum													7.30%
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