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Financing Arrangement (Line of Credit Facility) (Details) - Revolving Credit Facility [Member] - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2023
May 22, 2023
Mar. 22, 2023
Line of Credit Facility [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity     $ 500
Debt Instrument, Fee Amount $ 2    
LineofCreditFacilityTerm1 5 years    
Subsequent Event [Member]      
Line of Credit Facility [Line Items]      
Option To Request Additional Commitments On Credit Facility   $ 500  
Secured Overnight Financing Rate (SOFR)      
Line of Credit Facility [Line Items]      
Debt Instrument, Basis Spread on Variable Rate 0.10%