Cash and Investments - Assets pledged to third parties (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Assets pledged to third parties
Cash and Investments
Financial assets pledged as collateral	$ 8,523.9	$ 8,555.9
Regulatory deposits
Cash and Investments
Financial assets pledged as collateral	6,714.4	6,701.0
Security for reinsurance and other
Cash and Investments
Financial assets pledged as collateral	$ 1,809.5	$ 1,854.9

The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Classes of contingent liabilities [domain]; Financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 14
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_14_a&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_FinancialAssetsPledgedAsCollateralForLiabilitiesOrContingentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant