XML 45 R34.htm IDEA: XBRL DOCUMENT v3.7.0.1
Financial Instruments (Fair Value Measurements) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Sep. 30, 2016
Derivatives, Fair Value [Line Items]    
Fair value of long-term debt compared with carrying value $ (320)  
Maximum collateral that could have been required 3  
Collateral posted to counterparties 0  
Collateral held from counterparties 0  
Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Fair value of long-term debt 4,388  
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Assets [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Fair value of derivative assets 20 $ 7
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Fair value of derivative liabilities 10 49
Cash Flow Hedging [Member] | Commodity Contract [Member] | Assets [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Fair value of derivative assets 9 2
Cash Flow Hedging [Member] | Commodity Contract [Member] | Other Liabilities [Member] | Fair Value, Inputs, Level 2 [Member]    
Derivatives, Fair Value [Line Items]    
Fair value of derivative liabilities $ 0 $ 4