Joint ventures and associates - Summary of Transactions With Joint Ventures and Associates (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
|
| Disclosure Of Joint Ventures And Associates [Line Items] | |||
| Sales and charges to joint ventures and associates | $ 9,652 | $ 10,223 | $ 12,230 |
| Purchases and charges from joint ventures and associates | $ 13,076 | $ 15,084 | $ 22,286 |
| Joint ventures | Oil Products | |||
| Disclosure Of Joint Ventures And Associates [Line Items] | |||
| Percentage of entity's revenue | 19.00% | 25.00% | |
| Percent of entity's purchases | 14.00% | 19.00% | |