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Going concern and liquidity risk (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2023
Forecast
Liquidity [Line Items]
Percentage weakening of revenue less pass-through costs	0.12	0.11

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- Definition

Liquidity [Line Items]

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- Definition

Percentage Weakening of Revenue Less Pass-Through Costs

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No definition available.

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- Details

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