Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||||||||
| Reconciliation of changes in net assets available for benefits [abstract] | ||||||||
| Assets (liabilities) of benefit plan | — |
531,000,000
USD
|
— | — |
510,000,000
USD
|
— | — | — |
| Changes in net assets available for benefits [abstract] | ||||||||
| Investment income |
427,000,000
USD
|
— |
—
USD
|
427,000,000
USD
|
— |
214,000,000
USD
|
—
USD
|
214,000,000
USD
|
| Tax expense (income) |
2,251,000,000
USD
|
— |
86,000,000
USD
|
2,337,000,000
USD
|
— |
3,456,000,000
USD
|
114,000,000
USD
|
3,570,000,000
USD
|