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Long-term Corporate Debt and Borrowing Arrangements (Schedule of Committed Credit Facilities) (Details)
$ in Millions
3 Months Ended
Mar. 31, 2025
USD ($)
Line of Credit Facility [Line Items]  
Outstanding Borrowings $ 17,311
Available Capacity 2,998
Revolving Credit Facility | Line of Credit  
Line of Credit Facility [Line Items]  
Total Capacity 2,000
Outstanding Borrowings 0
Letters of Credit Issued 1,441
Available Capacity $ 559
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] Secured Overnight Financing Rate (SOFR) [Member]
Basis points 2.00%