Post-employment benefits for employees (Details 9) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined contribution pension and other post-retirement plans disclosure [line items]
Personnel costs	$ 14,900
Continuing operations
Defined contribution pension and other post-retirement plans disclosure [line items]
Post-employment benefit expense, defined contribution plans	$ 520	$ 523	$ 501

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

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