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Company financial information - Comprehensive income (Details) € in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2024 EUR (€) | Dec. 31, 2023 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 EUR (€)
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Finance (expense)/income | $ | $ (192,000,000) |  | $ (147,000,000) |  | $ 80,000,000 |
Profit (loss) before tax | $ | 10,000,000 |  | (71,000,000) |  | 256,000,000 |
Income tax (charge)/credit | $ | (13,000,000) |  | 21,000,000 |  | (19,000,000) |
(Loss)/profit for the year | (3,000,000) | € (3) | (50,000,000) | € (46) | 237,000,000 | € 224
Parent |  |  |  |  |  |
Disclosure of information about consolidated structured entities [line items] |  |  |  |  |  |
Other income |  | 14 |  |  |  |
Other external charges |  | (2) |  | (2) |  | (3)
Finance (expense)/income |  | (22) |  | (5) |  | 1
(Loss)/profit before exceptional items |  | (10) |  | (7) |  | (2)
Exceptional operating Income/(costs) |  | 1 |  | 1 |  | (2)
Exceptional finance income/(costs) |  | 13 |  | 55 |  | 210
Impairment of investments in subsidiary undertakings. | (400,000,000) | (400) |  |  |  |
Profit (loss) before tax |  | (396) |  | 49 |  | 206
Income tax (charge)/credit |  | 3 |  |  |  |
(Loss)/profit for the year | $ (427,000,000) | € (393) | $ 53,000,000 | € 49 | $ 218,000,000 | € 206

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