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Performance B.4.1. Share-based compensation - Cost of share based compensation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	$ (50)	$ (52)	$ (29)
2020 incentive plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	0	0	(3)
2021 incentive plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	0	(10)	(11)
2022 incentive plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	(5)	(10)	(15)
2023 incentive plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	(23)	(32)	0
2024 incentive plans
Disclosure of terms and conditions of share-based payment arrangement [line items]
Cost of share based compensation	$ (22)	$ 0	$ 0

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

Expense From Share-Based Payment Transactions, Excluding Disposals

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