XML 110 R102.htm IDEA: XBRL DOCUMENT v3.25.3
Accumulated other comprehensive income (Detail) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 649,368  
Ending Balance 698,155  
Unrealized investment gains (losses) [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 117 $ 190
Other comprehensive income 99 81
Ending Balance 216 271
Foreign currency translation [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (7,039) (5,393)
Other comprehensive income 1,207 78
Ending Balance (5,832) (5,315)
Long duration insurance contracts [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 2,015 1,353
Other comprehensive income (120) (10)
Ending Balance 1,895 1,343
Defined benefit pension plans [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 1,148 (97)
Other comprehensive income (102) (44)
Ending Balance 1,046 (141)
Other AOCI transactions [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 175 184
Other comprehensive income (23) (34)
Ending Balance 152 150
Accumulated other comprehensive income [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (3,584) (3,763)
Other comprehensive income 1,061 71
Ending Balance $ (2,523) $ (3,692)