v3.25.2
Segment information - Summary of Information by Geographical Area (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of geographical areas [line items]      
Third-party revenue, by origin $ 316,620 $ 381,314 $ 261,504
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 246,205 248,207 243,040
Europe      
Disclosure of geographical areas [line items]      
Third-party revenue, by origin 118,135 135,975 78,549
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 48,008 40,161 38,881
Asia, Oceania, Africa      
Disclosure of geographical areas [line items]      
Third-party revenue, by origin 99,967 126,643 87,070
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 91,374 97,019 97,278
USA      
Disclosure of geographical areas [line items]      
Third-party revenue, by origin 70,291 87,085 73,647
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 57,261 59,233 58,286
Other Americas      
Disclosure of geographical areas [line items]      
Third-party revenue, by origin 28,227 31,611 22,238
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 49,562 51,794 48,595
UK      
Disclosure of geographical areas [line items]      
Third-party revenue, by origin 44,815 50,236 21,846
Goodwill, other intangible assets, property, plant and equipment, joint ventures and associates at December 31 $ 21,478 $ 20,772 $ 21,974