Goodwill and other intangible assets - Schedule of Goodwill (Details) $ in Millions	9 Months Ended
Sep. 30, 2024 USD ($)
Goodwill [Roll Forward]
Balance at January 1, 2024	$ 18,629
Adjustments to goodwill resulting from acquisition	25
Foreign currency translation adjustments	4
Balance at September 30, 2024	$ 18,658

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details