XML 58 R47.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 5. Product Warranties (Details) - USD ($)
$ in Millions
3 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Product Warranties Disclosures [Abstract]        
Standard Product Warranty Accrual $ 17 $ 15 $ 19 $ 13
Standard Product Warranty Accrual, Increase for Warranties Issued 2 1    
Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties (2) 4    
Standard Product Warranty Accrual, Decrease for Payments $ (2) $ (3)