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Structured entities - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2025 USD ($) tranche | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Disclosure of unconsolidated structured entities [line items] |  |  |
Consolidated structured entities, Reference pool, number of tranches | tranche | 2 |  |
Unconsolidated structured entities, reference pool, number of tranches | tranche | 3 |  |
Expense from securitized liabilities | $ 32.0 | $ 34.0 | $ 22.0
Consumer receivables | 10,459.0 | 8,141.0 |
Transaction and service revenue | 2,500.0 | 2,136.0 | 1,768.0
Synthetic securitization transactions |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Expense from securitized liabilities | 30.7 | 32.3 | 21.9
Consumer receivables | 1,300.0 | 2,100.0 | $ 1,700.0
Forward flow securitization |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Assets transferred to structured entities, at time of transfer | 18,000.0 | 3,300.0 |
Total assets | 786.0 | 2.0 |
Transaction and service revenue | 12.2 | 1.6 |
Receivables recognised by SPV | $ 2,940.0 | $ 867.0 |
Forward flow securitization | Minimum |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Commitment term | 2 years |  |
Commitment amount | $ 750.0 |  |
Forward flow securitization | Maximum |  |  |
Disclosure of unconsolidated structured entities [line items] |  |  |
Commitment term | 3 years |  |
Commitment amount | $ 1,000.0 |  |

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- Definition The amount, at the time of transfer, of all assets transferred to structured entities. [Refer: Total for all unconsolidated structured entities [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2025-01-01 -Paragraph 27 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2025-en-r&anchor=para_27_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of loans and advances the entity has made to customers at amortised cost. [Refer: Loans and advances to customers; Financial assets at amortised cost] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Consolidated Structured Entities, Reference Pool, Number of Tranches + References No definition available. + Details
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- Definition Consumer Receivables Recognised In Entitys Financial Statements In Relation To Structured Entities + References No definition available. + Details
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- Definition Expense From Securitized Liabilities + References No definition available. + Details
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- Definition Receivables Recognised By Structured Entities + References No definition available. + Details
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- Definition Structured Entities, Commitment, Amount + References No definition available. + Details
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- Definition Structured Entities, Commitment, Term + References No definition available. + Details
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- Definition Unconsolidated Structured Entities, Reference Pool, Number of Tranches + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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