Statement Of Financial Position [Abstract]

Derwent London PLC - Filing #3488061

Concept	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	54,000,000 GBP	22,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	23,700,000 GBP	—	—	—	—	—	—	—	—	50,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investment property	—	—	5,359,900,000 GBP	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	5,029,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investments accounted for using equity method	—	—	51,100,000 GBP	1,749,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,615,900,000 GBP	—	—	—	—	—	—	—	—	900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	300,000 GBP	3,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3,100,000 GBP	—	—	—	—	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	68,500,000 GBP	68,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	50,100,000 GBP	—	—	—	—	—	—	—	—	50,700,000 GBP	—	—	—	—	—	54,500,000 GBP	54,000,000 GBP	—	—	—	—	—	—	—
Assets	—	—	5,892,000,000 GBP	3,744,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	3,375,500,000 GBP	—	—	—	—	—	—	—	—	5,531,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	5,600,000 GBP	5,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	5,600,000 GBP	—	—	—	—	—	—	—	—	5,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Retained earnings	—	—	3,299,700,000 GBP	255,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	321,200,000 GBP	—	—	—	—	—	—	—	—	3,124,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Share premium	—	—	195,400,000 GBP	195,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	193,700,000 GBP	—	—	—	—	—	—	—	—	193,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other reserves	—	—	941,100,000 GBP	925,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	926,300,000 GBP	—	—	—	—	—	—	—	—	939,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	—	4,441,800,000 GBP	1,382,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,446,800,000 GBP	—	—	—	—	—	—	—	—	4,263,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	– GBP	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	51,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity	3,299,700,000 GBP	941,100,000 GBP	4,441,800,000 GBP	1,382,300,000 GBP	925,600,000 GBP	– GBP	1,382,300,000 GBP	195,400,000 GBP	5,600,000 GBP	255,700,000 GBP	4,441,800,000 GBP	195,400,000 GBP	– GBP	5,600,000 GBP	3,124,500,000 GBP	51,900,000 GBP	4,263,200,000 GBP	5,600,000 GBP	1,446,800,000 GBP	– GBP	1,446,800,000 GBP	5,600,000 GBP	926,300,000 GBP	321,200,000 GBP	193,700,000 GBP	939,400,000 GBP	193,700,000 GBP	4,315,100,000 GBP	4,421,200,000 GBP	55,700,000 GBP	936,200,000 GBP	403,700,000 GBP	5,600,000 GBP	4,476,900,000 GBP	1,525,600,000 GBP	– GBP	193,000,000 GBP	1,525,600,000 GBP	193,000,000 GBP	923,300,000 GBP	3,286,400,000 GBP	5,600,000 GBP
Liabilities [abstract]
Deferred tax liabilities	—	—	– GBP	– GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	– GBP	—	—	—	—	—	—	—	—	500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Liabilities	—	—	1,450,200,000 GBP	2,362,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,928,700,000 GBP	—	—	—	—	—	—	—	—	1,216,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—