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Equity Method Investments (Details) - USD ($)
1 Months Ended 6 Months Ended
Oct. 31, 2012
Dec. 31, 2011
Jun. 28, 2015
Dec. 28, 2014
Schedule of Equity Method Investments [Line Items]        
Equity method investments     $ 283,225,000 $ 210,898,000
Purchase Price Agreement, Term     25 years  
CCPV [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity method investment, ownership percentage     25.00%  
Payments to acquire equity method investments   $ 16,400,000    
Diamond Energy [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity method investment, ownership percentage 25.00%      
Payments to acquire equity method investments $ 3,000,000      
AUOSP [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity method investments     $ 196,700,000 191,700,000
Equity method investment, ownership percentage     50.00%  
Joint venture, energy output committed to purchase, percentage     80.00%  
Future financing obligation, year one     $ 169,000,000  
Additional cash contributions     50,000,000  
8Point3 Energy [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity method investments     $ 68,200,000 $ 0