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Debt and Financing Activities - Revolving Credit Facilities (Details) - Revolving Credit Facility - USD ($)
3 Months Ended
Jun. 30, 2025
Jun. 30, 2024
May 08, 2025
Mar. 31, 2025
Nov. 07, 2022
Senior Unsecured Credit Facility (the 2022 Credit Facility) | Unsecured Debt          
Line of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity         $ 4,000,000,000.0
Borrowings under facility $ 0 $ 0      
Amounts outstanding under facility 0     $ 0  
Senior Unsecured Credit Facility (the 2022 Credit Facility), Canadian Dollar, British Pound Sterling, and Euros Sublimit | Unsecured Debt          
Line of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity         $ 3,600,000,000
Senior Unsecured Credit Facility (364 Day Credit Facility) | Unsecured Debt          
Line of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity     $ 1,000,000,000.0    
Borrowings under facility 0        
Amounts outstanding under facility $ 0