XML 50 R30.htm IDEA: XBRL DOCUMENT v3.6.0.2
Cash and Cash Equivalents, Investments and Funds Held for Customers - Classification on Balance Sheets (Details) - USD ($)
$ in Millions
Jan. 31, 2017
Jul. 31, 2016
Jan. 31, 2016
Jul. 31, 2015
Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents, amortized cost $ 392 $ 638 $ 334 $ 808
Total cash and cash equivalents, investments, and funds held for customers, Amortized Cost 990 1,411    
Total cash and cash equivalents, investments, and funds held for customers, Fair Value 989 1,412    
Cash and cash equivalents        
Cash and Cash Equivalents Items [Line Items]        
Cash and cash equivalents, amortized cost 392 638    
Cash and cash equivalents, fair value disclosure 392 638    
Investments        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 246 441    
Investments and funds, fair value 245 442    
Funds held for customers        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 324 304    
Investments and funds, fair value 324 304    
Long-term investments        
Cash and Cash Equivalents Items [Line Items]        
Investments and funds, amortized cost 28 28    
Investments and funds, fair value $ 28 $ 28