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Financial Instruments (Tables)
6 Months Ended
Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule Of Derivative Instruments
Into EarningsInto OCI
2nd QuarterSix Months2nd QuarterSix Months
Gains (Losses)Location2020 2021 2020 2021 2020 2021 2020 2021 
CommodityCost of sales$(1)8 (4)11 (23)13 (16)26 
Foreign currency
Sales
(1)1 (3)2 (8)(2)(5)3 
Foreign currency
Cost of sales
2 11 2 (66) (49)27 
Foreign currency
Other deductions, net
13 29 21 25 
Net Investment Hedges
Euro denominated debt57 53 31 (27)
     Total $15 40 25 40 (40)64 (39)29