NOTES PAYABLE, LONG-TERM DEBT AND AVAILABLE CREDIT FACILITIES Committed and Available Credit Facilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Jun. 30, 2025
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 8,400
Line of Credit Facility, Remaining Borrowing Capacity		8,400
Debt Securities [Member]
Line of Credit Facility [Line Items]
Repayments of Debt	$ 943
Revolving Credit Facility [Member] | Five Year Competitive Advance and Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		5,000
Line of Credit Facility, Remaining Borrowing Capacity		5,000
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due March 2025, Facility One [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due March 2025, Facility Two [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due September 2025
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		200
Line of Credit Facility, Remaining Borrowing Capacity		200
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due March 2026
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due November 2026
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		150
Line of Credit Facility, Remaining Borrowing Capacity		150
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due May 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due June 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		350
Line of Credit Facility, Remaining Borrowing Capacity		350
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due September 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		200
Line of Credit Facility, Remaining Borrowing Capacity		200
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due September 2025, Facility Two
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		175
Line of Credit Facility, Remaining Borrowing Capacity		175
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due November 2025
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		300
Line of Credit Facility, Remaining Borrowing Capacity		300
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due November 2026, Facility Two
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		200
Line of Credit Facility, Remaining Borrowing Capacity		200
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due March 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		250
Line of Credit Facility, Remaining Borrowing Capacity		250
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due October 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due November 2027
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		100
Line of Credit Facility, Remaining Borrowing Capacity		100
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due Due May 2028
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		300
Line of Credit Facility, Remaining Borrowing Capacity		300
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due October 2024
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		375
Line of Credit Facility, Remaining Borrowing Capacity		375
Revolving Credit Facility [Member] | Bilateral Revolving Credit Facility, Due February 2026
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		300
Line of Credit Facility, Remaining Borrowing Capacity		$ 300