Statement Of Financial Position [Abstract]

Severn Trent PLC - Filing #2059764

Concept	As at 2024-03-31	As at 2024-03-31	As at 2024-03-31	As at 2024-03-31	As at 2024-03-31	As at 2023-03-31	As at 2023-03-31	As at 2023-03-31	As at 2023-03-31	As at 2023-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31	As at 2022-03-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	—	11,766,900,000 GBP	10,716,900,000 GBP	—	—	—	—	—	—	—	—	—
Right-of-use assets	—	—	—	—	143,000,000 GBP	129,300,000 GBP	—	—	—	—	—	—	—	—	—
Goodwill	—	—	—	—	112,800,000 GBP	92,700,000 GBP	—	—	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	—	—	186,500,000 GBP	185,900,000 GBP	—	—	—	—	—	—	—	—	—
Investments in subsidiaries, joint ventures and associates reported in separate financial statements	—	—	—	—	– GBP	– GBP	—	—	—	—	—	—	—	—	—
Current tax assets	—	—	—	—	– GBP	9,900,000 GBP	—	—	—	—	—	—	—	—	—
Deferred tax assets	—	—	—	—	– GBP	– GBP	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	—	953,200,000 GBP	34,200,000 GBP	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	—	295,400,000 GBP	249,100,000 GBP	—	—	—	—	—	—	—	—	—
Retained earnings	—	—	—	—	7,900,000 GBP	162,500,000 GBP	—	—	—	—	—	—	—	—	—
Share premium	—	—	—	—	1,363,100,000 GBP	408,700,000 GBP	—	—	—	—	—	—	—	—	—
Other reserves	—	—	—	—	167,600,000 GBP	150,300,000 GBP	—	—	—	—	—	—	—	—	—
Equity	7,900,000 GBP	167,600,000 GBP	1,363,100,000 GBP	295,400,000 GBP	1,834,000,000 GBP	970,600,000 GBP	408,700,000 GBP	249,100,000 GBP	162,500,000 GBP	150,300,000 GBP	248,100,000 GBP	394,400,000 GBP	473,000,000 GBP	1,263,900,000 GBP	148,400,000 GBP
Liabilities [abstract]
Current tax liabilities	—	—	—	—	900,000 GBP	– GBP	—	—	—	—	—	—	—	—	—
Deferred tax liabilities	—	—	—	—	1,364,500,000 GBP	1,293,500,000 GBP	—	—	—	—	—	—	—	—	—