Statement Of Financial Position [Abstract]

Direct Line Insurance Group PLC - Filing #2024748

Concept	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-01-01	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 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 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
Statement of financial position [abstract]
Assets [abstract]
Non-current assets [abstract]
Property, plant and equipment	91,600,000 GBP	—	—	—	—	—	—	—	—	—	83,700,000 GBP	—	—	—	—	—	—	—	—	—	113,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Right-of-use assets	96,100,000 GBP	—	—	—	—	—	—	—	—	—	73,000,000 GBP	—	—	—	—	—	—	—	—	—	76,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investment property	277,100,000 GBP	—	—	—	—	—	—	—	—	—	278,500,000 GBP	—	—	—	—	—	—	—	—	—	317,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	56,500,000 GBP	—	—	—	—	—	—	—	—	—	89,000,000 GBP	—	—	—	—	—	—	—	—	—	29,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Current assets [abstract]
Cash and cash equivalents	1,772,200,000 GBP	—	—	—	—	—	—	—	—	—	1,003,600,000 GBP	—	—	—	—	—	—	—	—	—	955,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners	13,900,000 GBP	—	—	—	—	—	—	—	—	—	40,900,000 GBP	—	—	—	—	—	—	—	—	—	41,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Assets	8,417,200,000 GBP	—	—	—	—	—	—	—	—	—	7,423,700,000 GBP	—	—	—	—	—	—	—	—	—	8,382,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Equity	2,404,700,000 GBP	484,700,000 GBP	346,500,000 GBP	3,600,000 GBP	— GBP	143,100,000 GBP	200,000 GBP	29,900,000 GBP	2,058,200,000 GBP	1,456,900,000 GBP	2,191,800,000 GBP	283,400,000 GBP	39,000,000 GBP	143,100,000 GBP	— GBP	1,845,300,000 GBP	900,000 GBP	— GBP	346,500,000 GBP	1,456,900,000 GBP	2,797,100,000 GBP	41,400,000 GBP	1,454,800,000 GBP	890,800,000 GBP	1,454,800,000 GBP	41,400,000 GBP	2,896,700,000 GBP	— GBP	2,797,100,000 GBP	7,500,000 GBP	346,500,000 GBP	346,500,000 GBP	1,500,000 GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	— GBP	3,500,000 GBP	3,500,000 GBP	7,500,000 GBP	— GBP	96,100,000 GBP	2,550,200,000 GBP	96,100,000 GBP	96,100,000 GBP	300,000 GBP	982,900,000 GBP	145,200,000 GBP	— GBP	— GBP	2,450,600,000 GBP	300,000 GBP	145,200,000 GBP	1,500,000 GBP	4,000,000 GBP
Liabilities [abstract]
Liabilities	6,012,500,000 GBP	—	—	—	—	—	—	—	—	—	5,231,900,000 GBP	—	—	—	—	—	—	—	—	—	5,585,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities	8,417,200,000 GBP	—	—	—	—	—	—	—	—	—	7,423,700,000 GBP	—	—	—	—	—	—	—	—	—	8,382,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—