NOTES PAYABLE - Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Due within one year:
Outstanding, Amount	$ 10,437,623	$ 8,087,168
Outstanding, Weighted - average rate	3.77%	3.52%
Medium-term notes due in:
Two years	$ 4,844,538
Three years	3,822,999
Four years	2,732,980
Five years	2,491,831
Thereafter	3,190,202
Total due after one year	17,082,550
Total principal net of discounts	27,520,173	$ 26,586,959
Hedging adjustments	(148,999)	(250,417)
Total	$ 27,371,174	26,336,542
Weighted - average rate	3.34%
Total weighted - average rate	3.51%
Two years
Medium-term notes due in:
Weighted - average rate	2.66%
Three years
Medium-term notes due in:
Weighted - average rate	3.53%
Four years
Medium-term notes due in:
Weighted - average rate	4.13%
Five years
Medium-term notes due in:
Weighted - average rate	4.41%
Thereafter
Medium-term notes due in:
Weighted - average rate	2.63%
Discount notes
Due within one year:
Outstanding, Amount	$ 2,167,258	$ 1,734,387
Outstanding, Weighted - average rate	4.42%	5.32%
Average Outstanding, Amount	$ 1,928,884	$ 1,097,300
Average Outstanding, Weighted - average rate (as a percent)	5.11%	5.08%
Medium-term notes
Due within one year:
Outstanding, Amount	$ 2,343,264	$ 384,970
Outstanding, Weighted - average rate	4.64%	5.07%
Average Outstanding, Amount	$ 1,000,290	$ 1,731,308
Average Outstanding, Weighted - average rate (as a percent)	5.28%	4.09%
Medium-term notes due in:
Two years		$ 5,523,671
Three years		3,825,702
Four years		3,038,229
Five years		2,623,202
Thereafter		3,488,987
Total due after one year		$ 18,499,791
Weighted - average rate		3.16%
Total weighted - average rate		3.27%
Medium-term notes | Two years
Medium-term notes due in:
Weighted - average rate		3.27%
Medium-term notes | Three years
Medium-term notes due in:
Weighted - average rate		2.27%
Medium-term notes | Four years
Medium-term notes due in:
Weighted - average rate		3.44%
Medium-term notes | Five years
Medium-term notes due in:
Weighted - average rate		4.37%
Medium-term notes | Thereafter
Medium-term notes due in:
Weighted - average rate		2.80%
Current portion of medium-term notes
Due within one year:
Outstanding, Amount	$ 5,927,101	$ 5,967,811
Outstanding, Weighted - average rate	3.20%	2.90%