Disclosure Of Insurance Contracts [Text Block]

Derwent London PLC - Filing #3488061

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Disclosure of insurance contracts [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [abstract]
Disclosure of adjustments made when entity changed basis of disaggregation of insurance finance income (expenses) between profit or loss and other comprehensive income for contracts with direct participation features [line items]
Profit (loss)	1,500,000 GBP	– GBP	252,300,000 GBP	– GBP	11,600,000 GBP	– GBP	– GBP	– GBP	– GBP	11,600,000 GBP	11,600,000 GBP	– GBP	253,800,000 GBP	252,300,000 GBP	81,400,000 GBP	1,800,000 GBP	– GBP	– GBP	– GBP	– GBP	1,800,000 GBP	77,600,000 GBP	1,800,000 GBP	– GBP	– GBP	3,800,000 GBP	– GBP	77,600,000 GBP