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Long-term Corporate Debt and Borrowing Arrangements (Schedule Of Committed Credit Facilities) (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2022
USD ($)
Line of Credit Facility [Line Items]  
Outstanding Borrowings $ 13,157
Available Capacity $ 2,582
Line of Credit | Revolving Credit Facility | London Interbank Offered Rate (LIBOR)  
Line of Credit Facility [Line Items]  
Basis points 1.75%
Revolving Credit Facility | Line of Credit  
Line of Credit Facility [Line Items]  
Total Capacity $ 2,000
Outstanding Borrowings 0
Letters of Credit Issued 888
Available Capacity $ 1,112