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Debt and Financing Activities - Commercial Paper Narrative (Details) - Commercial Paper - USD ($)
$ in Millions
3 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Line of Credit Facility [Line Items]      
Credit facility, maximum borrowing capacity $ 4,000    
Proceeds from issuance of commercial paper 65 $ 0  
Repayments of commercial paper 65    
Commercial paper $ 0   $ 0