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Debt and Financing Obligations - Additional Information (Details) - USD ($)
3 Months Ended
Feb. 28, 2018
Nov. 30, 2017
Dec. 02, 2016
Dec. 01, 2016
Sep. 30, 2016
Jun. 05, 2015
OpCo | First Solar | Stateline            
Debt Instrument [Line Items]            
Interest rate of promissory note     4.00%      
Interest rate of promissory note contingent upon certain conditions     6.00%      
OpCo | Maximum            
Debt Instrument [Line Items]            
Subordinated indebtedness       $ 50,000,000.0    
Revolving Credit Facility | OpCo            
Debt Instrument [Line Items]            
Letters of credit outstanding amount $ 54,600,000 $ 54,600,000        
Senior Secured Credit Facility            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing amount           $ 525,000,000.0
Line of credit facility unused capacity, commitment fee percentage 0.30%          
Senior Secured Credit Facility | Maximum            
Debt Instrument [Line Items]            
Debt to cash flow ratio for remainder of fiscal year 600.00%          
Debt to cash flow ratio thereafter 550.00%          
Senior Secured Credit Facility | Minimum            
Debt Instrument [Line Items]            
Debt service coverage ratio 175.00%          
Senior Secured Credit Facility | Base Rate            
Debt Instrument [Line Items]            
Line of credit facility interest rate 0.50%          
Senior Secured Credit Facility | OpCo            
Debt Instrument [Line Items]            
Economic interest in entities 35.00%          
Senior Secured Credit Facility | Term Loan Facility            
Debt Instrument [Line Items]            
Line of credit facility, amount outstanding           300,000,000.0
Senior Secured Credit Facility | Delayed Draw Term Loan Facility            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing amount           25,000,000.0
Senior Secured Credit Facility | Revolving Credit Facility            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing amount           $ 200,000,000.0
Senior Secured Credit Facility | Incremental Term Loan Facility | OpCo            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing amount         $ 775,000,000.0  
Line of credit facility, increase in borrowing capacity         $ 250,000,000.0