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Financial Instruments (Tables)
9 Months Ended
Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule Of Derivative Instruments
Into EarningsInto OCI
3rd QuarterNine Months3rd QuarterNine Months
Gains (Losses)Location2019  2020  2019  2020  2019  2020  2019  2020  
CommodityCost of sales$(2) (4) (8) (8) (8) 17  (5) 1  
Foreign currency
Sales
(2) (2) (5) (5) (3) 6  (5) 1  
Foreign currency
Cost of sales
6  (3) 15  8  3  21  15  (28) 
Foreign currency
Other deductions, net
3  (26) 43  (5) 
Net Investment Hedges
Euro denominated debt6  (72) 12  (41) 
     Total $5  (35) 45  (10) (2) (28) 17  (67)