XML 79 R54.htm IDEA: XBRL DOCUMENT v3.7.0.1
Schedule of Long-Term Debt (Details) - USD ($)
$ in Millions
Jan. 31, 2017
Jan. 31, 2016
Debt Instrument [Line Items]    
Long-term debt $ 38,271 $ 40,959
Long-term Debt, Current Maturities (2,256) (2,745)
Long-term debt 36,015 38,214
Fixed    
Debt Instrument [Line Items]    
Long-term debt $ 30,500 $ 32,500
Debt Weighted Average Interest Rate Fixed 4.70% 4.50%
Variable    
Debt Instrument [Line Items]    
Long-term debt $ 500 $ 500
Debt Weighted Average Interest Rate Variable 5.50% 5.30%
Total U.S. dollar denominated    
Debt Instrument [Line Items]    
Long-term debt $ 31,000 $ 33,000
Fixed    
Debt Instrument [Line Items]    
Long-term debt $ 2,674 $ 2,708
Debt Weighted Average Interest Rate Fixed 3.30% 3.30%
Variable    
Debt Instrument [Line Items]    
Long-term debt $ 0 $ 0
Total Euro denominated    
Debt Instrument [Line Items]    
Long-term debt 2,674 2,708
Fixed    
Debt Instrument [Line Items]    
Long-term debt $ 4,370 $ 4,985
Debt Weighted Average Interest Rate Fixed 5.30% 5.30%
Variable    
Debt Instrument [Line Items]    
Long-term debt $ 0 $ 0
Total Sterling denominated    
Debt Instrument [Line Items]    
Long-term debt 4,370 4,985
Fixed    
Debt Instrument [Line Items]    
Long-term debt $ 88 $ 83
Debt Weighted Average Interest Rate Fixed 1.60% 1.60%
Variable    
Debt Instrument [Line Items]    
Long-term debt $ 0 $ 0
Total Yen denominated    
Debt Instrument [Line Items]    
Long-term debt 88 83
Total unsecured debt    
Debt Instrument [Line Items]    
Long-term debt 38,132 40,776
Total other debt (in USD)(2)    
Debt Instrument [Line Items]    
Long-term debt $ 139 $ 183