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Financing Arrangement (Schedule Of Interest Expense Related To Notes) (Details) - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Debt Instruments [Abstract]    
Amortization of debt issuance costs $ (1) $ 0
Coupon interest expense (14) (14)
Total interest expense $ (15) $ (14)