v3.25.1
SHAREHOLDERS' EQUITY - Schedule of Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance $ 19,564  
Ending balance $ 19,468 $ 31,128
Dividends declared per common share (in dollars per share) $ 0.36 $ 0
Accumulated other comprehensive income (loss)    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance $ (3,861) $ (6,150)
Ending balance (3,733) (5,603)
Currency translation adjustments, including noncontrolling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,472) (3,623)
AOCI before reclass, net of taxes (7) (35)
Other comprehensive income (loss) (7) (35)
AOCI before reclasses, taxes (40) 26
Currency translation adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive income (loss) (7) (35)
Ending balance (1,478) (3,658)
Benefit plans, including noncontrolling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance 665 1,786
AOCI before reclass, net of taxes (15) (29)
Reclass from AOCI, net of taxes (120) (168)
Other comprehensive income (loss) (134) (197)
AOCI before reclasses, taxes (4) 8
Reclass from AOCI, taxes (35) (52)
Benefit plans, attributable to noncontrolling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive income (loss) 0 2
Benefit plans AOCI    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive income (loss) (134) (200)
Ending balance 531 1,586
Investment securities and cash flow hedges, including noncontrolling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,985) (959)
AOCI before reclass, net of taxes 323 (465)
Reclass from AOCI, net of taxes (6) 11
Other comprehensive income (loss) 318 (453)
AOCI before reclasses, taxes 87 (116)
Reclass from AOCI, taxes (1) 0
Investment securities and cash flow hedges AOCI    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Other comprehensive income (loss) 318 (453)
Ending balance (1,667) (1,412)
Long-duration insurance contracts    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,070) (3,354)
AOCI before reclass, net of taxes (48) 1,236
Other comprehensive income (loss) (48) 1,236
Ending balance (1,118) (2,119)
AOCI before reclasses, taxes $ (13) $ 328