Financial instruments - Derivative Contract Maturities (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Series H bonds
Financial instruments [Line Items]
Contract amount	$ 91,718
Series O bonds
Financial instruments [Line Items]
Contract amount	58,748
Series P bonds
Financial instruments [Line Items]
Contract amount	134,228
Series Q bonds
Financial instruments [Line Items]
Contract amount	$ 123,370

The amount of contractual undiscounted cash flows in relation to contractual amounts to be exchanged in a derivative financial instrument for which gross cash flows are exchanged. [Refer: Derivatives [member]]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph B11D
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_B11D_d&doctype=Appendix&subtype=B
-URIDate 2023-03-23

Name:	ifrs-full_ContractualAmountsToBeExchangedInDerivativeFinancialInstrumentForWhichGrossCashFlowsAreExchanged
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant