Statement Of Financial Position [Abstract]

Severn Trent PLC - Filing #1737775

Concept	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	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2021-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31	As at 2020-03-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	—	—	—	10,208,400,000 GBP	—	—	—	9,875,200,000 GBP	—	—	—	—	—	—	—
Right-of-use assets	—	—	—	129,900,000 GBP	—	—	—	130,800,000 GBP	—	—	—	—	—	—	—
Goodwill	—	—	—	91,400,000 GBP	—	—	—	91,400,000 GBP	—	—	—	—	—	—	—
Intangible assets other than goodwill	—	—	—	179,600,000 GBP	—	—	—	164,000,000 GBP	—	—	—	—	—	—	—
Current tax assets	—	—	—	6,200,000 GBP	—	—	—	– GBP	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	115,400,000 GBP	—	—	—	56,200,000 GBP	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	248,100,000 GBP	—	—	—	237,200,000 GBP	—	—	—	—	—	—	—
Retained earnings	—	—	—	473,000,000 GBP	—	—	—	651,700,000 GBP	—	—	—	—	—	—	—
Share premium	—	—	—	394,400,000 GBP	—	—	—	148,100,000 GBP	—	—	—	—	—	—	—
Other reserves	—	—	—	148,400,000 GBP	—	—	—	101,700,000 GBP	—	—	—	—	—	—	—
Equity	248,100,000 GBP	394,400,000 GBP	473,000,000 GBP	1,263,900,000 GBP	148,400,000 GBP	651,700,000 GBP	101,700,000 GBP	1,138,700,000 GBP	237,200,000 GBP	148,100,000 GBP	67,900,000 GBP	1,243,700,000 GBP	137,000,000 GBP	236,500,000 GBP	802,300,000 GBP
Liabilities [abstract]
Current tax liabilities	—	—	—	– GBP	—	—	—	200,000 GBP	—	—	—	—	—	—	—
Deferred tax liabilities	—	—	—	1,320,600,000 GBP	—	—	—	906,000,000 GBP	—	—	—	—	—	—	—