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Intangible assets - Sensitivity to change in key assumptions (Details) - Aviation American Gin $ in Millions	12 Months Ended
	Jun. 30, 2024 USD ($)
Disclosure of intangible assets sensitivity to change in key assumptions [line items]
Carrying amount of asset or cash-generating unit	$ 268
Headroom
Disclosure of intangible assets sensitivity to change in key assumptions [line items]
Headroom	69
Decrease In Annual Growth Rate in Forecast Period 2025-2030
Disclosure of intangible assets sensitivity to change in key assumptions [line items]
Potential impairment loss	$ 108

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Carrying Amount Of Asset Or Cash-generating Unit

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The amount by which a cash-generating unit's (group of units') recoverable amount exceeds its carrying amount. [Refer: Carrying amount [member]; Cash-generating units [member]]

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The amount recognised as a reduction of the carrying amount of an asset or cash-generating unit to its recoverable amount. [Refer: Carrying amount [member]]

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