XML 53 R39.htm IDEA: XBRL DOCUMENT v3.3.1.900
Short-Term Borrowings (Details) - Wells Fargo Bank NA - USD ($)
$ in Millions
3 Months Ended
Nov. 30, 2015
Aug. 31, 2015
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 25  
Line of Credit Facility, Expiration Date Apr. 01, 2016  
Line of Credit Facility, Amount Outstanding $ 0 $ 0