XML 46 R31.htm IDEA: XBRL DOCUMENT v3.3.1.900
Cash and Cash Equivalents, Investments and Funds Held for Customers - Classification on Balance Sheets (Details) - USD ($)
$ in Millions
Jan. 31, 2016
Jul. 31, 2015
Jan. 31, 2015
Jul. 31, 2014
Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents, amortized cost $ 334 $ 808 $ 482 $ 849
Total cash and cash equivalents, investments, and funds held for customers, Amortized Cost 735 2,062    
Total cash and cash equivalents, investments, and funds held for customers, Fair Value 735 2,061    
Cash and cash equivalents        
Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents, amortized cost 334 808    
Cash and cash equivalents, fair value disclosure 334 808    
Investments        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 0 890    
Investments and funds, fair value 0 889    
Funds held for customers        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 373 337    
Investments and funds, fair value 373 337    
Long-term investments        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 28 27    
Investments and funds, fair value $ 28 $ 27