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Condensed consolidated statements of cash flows - additional details - Change in net current assets and other operating cash flow items (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash Flow Statement [Abstract]
(Increase) in inventories	$ (198)	$ (118)
(Increase) in trade receivables	(138)	(151)
Increase in trade payables	36	8
Net change in other operating assets	(44)	(16)
Net change in other operating liabilities	(76)	(154)
Total	$ (420)	$ (431)

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Cash Flow Statement [Abstract]

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Change In Net Current Assets And Other Operating Cash Flow Items

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Adjustments for decrease (increase) in inventories to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Inventories; Profit (loss)]

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Adjustments for decrease (increase) in other assets to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other assets; Profit (loss)]

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Adjustments for increase (decrease) in other liabilities to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Other liabilities; Profit (loss)]

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