Analysis Of Income And Expense [Abstract]

Lancashire Holdings - Filing #2011598

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31
Analysis of income and expense [abstract]
Material income and expense [abstract]
Investment income	—	160,500,000 USD	—	—	—	—	—	—	—	—	—	—	76,700,000 USD	—	—	—
Operating expense	—	107,400,000 USD	—	—	—	—	—	—	—	—	—	—	58,300,000 USD	—	—	—
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Expense from share-based payment transactions with employees	—	15,200,000 USD	—	—	—	—	—	—	—	—	—	—	8,600,000 USD	—	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	12,100,000 USD	—	—	—	—	—	—	—	—	—	—	5,400,000 USD	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	— USD	321,500,000 USD	— USD	— USD	321,500,000 USD	321,500,000 USD	— USD	— USD	— USD	15,500,000 USD	— USD	— USD	15,500,000 USD	15,500,000 USD	— USD	— USD