Disclosure Of Effect Of Changes In Foreign Exchange Rates [Text Block]

United Utilities Group PLC - Filing #5038065

Concept	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	2021-04-01 to 2022-03-31	As at 2022-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	As at 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31	2020-04-01 to 2021-03-31
Disclosure of effect of changes in foreign exchange rates [text block]	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of information when currency is not exchangeable into another currency [text block]	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of information when foreign operation’s functional currency is not exchangeable into presentation currency [text block]	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of summarised financial information about foreign operation [text block]	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of summarised financial information about foreign operation [abstract]
Disclosure of summarised financial information about foreign operation [line items]
Non-current assets	—	—	—	—	—	13,823,200,000 GBP	—	—	13,166,200,000 GBP	—	—	—
Current assets	—	—	—	—	—	613,800,000 GBP	—	—	1,012,900,000 GBP	—	—	—
Non-current liabilities	—	—	—	—	—	10,791,000,000 GBP	—	—	10,152,600,000 GBP	—	—	—
Current liabilities	—	—	—	—	—	688,600,000 GBP	—	—	995,500,000 GBP	—	—	—
Revenue	—	—	—	—	1,862,700,000 GBP	—	—	—	—	—	—	1,808,000,000 GBP
Profit (loss)	– GBP	56,800,000 GBP	– GBP	– GBP	56,800,000 GBP	—	– GBP	– GBP	—	– GBP	453,400,000 GBP	453,400,000 GBP
Comprehensive income	– GBP	143,300,000 GBP	79,900,000 GBP	– GBP	223,200,000 GBP	—	400,000 GBP	– GBP	—	– GBP	361,600,000 GBP	361,200,000 GBP