XML 91 R78.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments - Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Sep. 30, 2017
Carrying Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents $ 100 $ 88
Short-term debt 77 288
Long-term debt 728 750
Carrying Value | Foreign exchange forward contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign exchange forward contracts (other assets) 1 0
Foreign exchange forward contracts (other liabilities) 1 3
Carrying Value | Foreign currency option contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign exchange forward contracts (other assets) 1 3
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and cash equivalents 100 88
Short-term debt 103 329
Long-term debt 796 859
Fair Value | Foreign exchange forward contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign exchange forward contracts (other assets) 1 0
Foreign exchange forward contracts (other liabilities) 1 3
Fair Value | Foreign currency option contracts    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign exchange forward contracts (other assets) $ 1 $ 3