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Income tax - Measurement of results for tax purposes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current tax expenses
Current year	$ 1,360.4	$ 892.8	$ 16.2
Taxes in respect of previous years	(2.6)	(2.0)	0.8
Total current tax expenses	1,357.8	890.8	17.0
Deferred tax expenses
Origination and reversal of temporary differences	40.5	119.6	(0.4)
Total income taxes in income statements	$ 1,398.3	$ 1,010.4	$ 16.6

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Adjustments of tax expense (income) recognised in the period for current tax of prior periods.

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The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

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