v3.25.4
Insurance business - Present value of future undiscounted cash flows (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows $ 107,023 $ 94,726
Remaining contractual service margin 15,540 12,716
Less than 1 year    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows (3,696) (2,555)
Remaining contractual service margin 1,433 1,180
1–2 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows (33) (551)
Remaining contractual service margin 1,299 1,065
2–3 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,953 2,363
Remaining contractual service margin 1,189 965
3–4 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,131 2,915
Remaining contractual service margin 1,089 879
4–5 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 4,247 3,226
Remaining contractual service margin 995 799
5–10 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 12,604 11,395
Remaining contractual service margin 3,804 3,051
10–20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 17,542 22,284
Remaining contractual service margin 3,752 3,081
Over 20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 69,275 55,649
Remaining contractual service margin 1,979 1,696
Life direct participating and investment DPF contracts    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 103,049 91,127
Remaining contractual service margin 14,723 11,929
Life direct participating and investment DPF contracts | Less than 1 year    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows (3,766) (3,526)
Remaining contractual service margin 1,312 1,052
Life direct participating and investment DPF contracts | 1–2 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows (197) (455)
Remaining contractual service margin 1,205 961
Life direct participating and investment DPF contracts | 2–3 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,701 2,464
Remaining contractual service margin 1,112 880
Life direct participating and investment DPF contracts | 3–4 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,086 2,968
Remaining contractual service margin 1,024 810
Life direct participating and investment DPF contracts | 4–5 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,567 3,219
Remaining contractual service margin 941 746
Life direct participating and investment DPF contracts | 5–10 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 12,420 11,332
Remaining contractual service margin 3,631 2,892
Life direct participating and investment DPF contracts | 10–20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 17,439 22,005
Remaining contractual service margin 3,602 2,954
Life direct participating and investment DPF contracts | Over 20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 66,799 53,120
Remaining contractual service margin 1,896 1,634
Life other contracts    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 3,974 3,599
Remaining contractual service margin 817 787
Life other contracts | Less than 1 year    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 70 971
Remaining contractual service margin 121 128
Life other contracts | 1–2 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 164 (96)
Remaining contractual service margin 94 104
Life other contracts | 2–3 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 252 (101)
Remaining contractual service margin 77 85
Life other contracts | 3–4 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 45 (53)
Remaining contractual service margin 65 69
Life other contracts | 4–5 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 680 7
Remaining contractual service margin 54 53
Life other contracts | 5–10 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 184 63
Remaining contractual service margin 173 159
Life other contracts | 10–20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 103 279
Remaining contractual service margin 150 127
Life other contracts | Over 20 years    
Disclosure of information about expected recognition of contractual service margin in profit or loss [line items]    
Insurance liability future cash flows 2,476 2,529
Remaining contractual service margin $ 83 $ 62