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Financial Instruments (Tables)
3 Months Ended
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule Of Derivative Instruments
Into EarningsInto OCI
1st Quarter1st Quarter
Gains (Losses)Location2019 2020 2019 2020 
CommodityCost of sales$(3)3 13 
Foreign currency
Sales
(2)1 5 
Foreign currency
Cost of sales
 17 27 
Foreign currency
Other deductions, net
(4)
Net Investment Hedges
Euro denominated debt(26)(80)
     Total $10  (35)