Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Summary Of The Borrowings Outstanding And Capacity Available Under The Facility) (Details) - Credit Facility of Three Point Five Billion [Member] $ in Thousands	Dec. 31, 2023 USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,500,000
Long-Term Line of Credit	0
Letters of Credit Outstanding, Amount	3,000
Line of Credit Facility, Remaining Borrowing Capacity	3,497,000
Letters of Credit Outstanding, Amount	3,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 3,497,000