DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Adjustments to the Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Asset Fair Value
Gross derivatives fair values presented in the Consolidated Balance Sheets	$ 498	$ 534
Amounts subject to master netting agreements	(100)	(118)
Cash collateral pledged (received) subject to master netting agreements	(266)	(204)
Total net derivative fair value	132	212
Liability Fair Value
Liability Fair Value	(448)	(494)
Amounts subject to master netting agreements	100	118
Cash collateral pledged (received) subject to master netting agreements	4	62
Total net derivative fair value	(344)	(314)
Qualifying Hedges
Asset Fair Value
Gross fair value	9	19
Cleared trades, variation margin netting	(9)	(19)
Total derivative asset	0	0
Gross derivatives fair values presented in the Consolidated Balance Sheets	0	0
Liability Fair Value
Gross fair value	(18)	0
Cleared trades, variation margin netting	18	0
Total derivative liability	0	0
Liability Fair Value	0	0
Non-qualifying Hedges
Asset Fair Value
Gross fair value	565	596
Cleared trades, variation margin netting	(67)	(62)
Total derivative asset	498	534
Gross derivatives fair values presented in the Consolidated Balance Sheets	498	534
Liability Fair Value
Gross fair value	(474)	(529)
Cleared trades, variation margin netting	26	35
Total derivative liability	(448)	(494)
Liability Fair Value	$ (448)	$ (494)