Quarterly report pursuant to Section 13 or 15(d)

Customer and Supplier Concentrations (Details)

v3.8.0.1
Customer and Supplier Concentrations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Concentration Risk [Line Items]        
Revenues $ 1,994,963 $ 1,730,845 $ 5,839,491 $ 5,662,859
Customer concentrations        
Concentration Risk [Line Items]        
Revenues $ 1,994,963 $ 1,730,845 $ 5,839,491 $ 5,662,859
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%
Revenue | Customer concentrations        
Concentration Risk [Line Items]        
Revenues $ 1,008,093 $ 616,528 $ 2,846,740 $ 2,095,743
Concentration risk, percentage 50.50% 35.70% 48.70% 37.00%
HSBC Bank USA | Revenue | Customer concentrations        
Concentration Risk [Line Items]        
Revenues $ 606,966 $ 293,686 $ 1,525,739 $ 1,268,160
Concentration risk, percentage 30.40% 17.00% 26.10% 22.40%
Mitsubishi Intl. Corp. | Revenue | Customer concentrations        
Concentration Risk [Line Items]        
Revenues $ 401,127 $ 322,842 $ 1,321,001 $ 827,583
Concentration risk, percentage 20.10% 18.70% 22.60% 14.60%