ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Summary of Changes in AOCI by Component (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	$ 8,468	$ 5,895	$ 9,121
Total other comprehensive income (loss) from continuing operations, net of tax	(472)	276	(458)
End of year	7,024	8,468	5,895
CTA
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	(2,985)	(3,386)	(2,907)
Other comprehensive income (loss) before reclassifications	(445)	216	(544)
Amounts reclassified from AOCI	0	185	65
Total other comprehensive income (loss) from continuing operations, net of tax	(445)	401	(479)
End of year	(3,430)	(2,985)	(3,386)
Pension and OPEB plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	(452)	(331)	(347)
Other comprehensive income (loss) before reclassifications	(19)	(106)	(9)
Amounts reclassified from AOCI	(4)	(15)	25
Total other comprehensive income (loss) from continuing operations, net of tax	(23)	(121)	16
End of year	(475)	(452)	(331)
Hedging activities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	(120)	(119)	(126)
Other comprehensive income (loss) before reclassifications	10	5	22
Amounts reclassified from AOCI	2	(6)	(15)
Total other comprehensive income (loss) from continuing operations, net of tax	12	(1)	7
End of year	(108)	(120)	(119)
Available-for-sale debt securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	3	3	0
Other comprehensive income (loss) before reclassifications	0	0	3
Amounts reclassified from AOCI	0	0	0
Total other comprehensive income (loss) from continuing operations, net of tax	0	0	3
End of year	3	3	3
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning of year	(3,554)	(3,833)	(3,380)
Other comprehensive income (loss) before reclassifications	(454)	115	(528)
Amounts reclassified from AOCI	(2)	164	75
Total other comprehensive income (loss) from continuing operations, net of tax	(456)	279	(453)
End of year	$ (4,010)	$ (3,554)	$ (3,833)