Analysis Of Income And Expense [Abstract]

Pennon Group PLC - Filing #2044939

Concept	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2023-04-01 to 2024-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31	2022-04-01 to 2023-03-31
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	– GBP	9 07.8 GBP	—	—	907,800,000 GBP	—	—	—	—	—	—	27,800,000 GBP	825,000,000 GBP	—	—	—	—	—	797,200,000 GBP
Material income and expense [abstract]
Impairment loss (reversal of impairment loss) on trade receivables [abstract]
Impairment loss (reversal of impairment loss) recognised in profit or loss, trade receivables	—	– GBP	7,100,000 GBP	—	—	7,100,000 GBP	—	—	—	—	—	—	– GBP	7,800,000 GBP	—	—	—	—	—	7,800,000 GBP
Finance income (cost)	—	– GBP	150,200,000 GBP	—	—	150,200,000 GBP	—	—	—	—	—	—	18,400,000 GBP	13 6.6 GBP	—	—	—	—	—	118,200,000 GBP
Expenses by nature [abstract]
Raw materials and consumables used	—	– GBP	51,800,000 GBP	—	—	51,800,000 GBP	—	—	—	—	—	—	– GBP	33,600,000 GBP	—	—	—	—	—	33,600,000 GBP
Classes of employee benefits expense [abstract]
Employee benefits expense	—	0. 7 GBP	114,800,000 GBP	—	—	115,500,000 GBP	—	—	—	—	—	—	– GBP	102,200,000 GBP	—	—	—	—	—	102,200,000 GBP
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Depreciation and amortisation expense [abstract]
Depreciation and amortisation expense	—	– GBP	172,000,000 GBP	—	—	172,000,000 GBP	—	—	—	—	—	—	– GBP	154,700,000 GBP	—	—	—	—	—	154,700,000 GBP
Disclosure of attribution of expenses by nature to their function [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [abstract]
Disclosure of attribution of expenses by nature to their function [line items]
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates and joint ventures accounted for using equity method	—	– GBP	700,000 GBP	—	—	700,000 GBP	—	—	—	—	—	—	– GBP	300,000 GBP	—	—	—	—	—	300,000 GBP
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	—	2,200,000 GBP	– GBP	2,200,000 GBP	—	—	—	—	—	—	—	—	9,800,000 GBP	– GBP	—	—	—	9,800,000 GBP
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss	—	—	—	4,100,000 GBP	– GBP	4,100,000 GBP	—	—	—	—	—	—	—	—	7,300,000 GBP	– GBP	—	—	—	7,300,000 GBP
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	27,300,000 GBP	—	—	5. 3 GBP	21,000,000 GBP	26,300,000 GBP	– GBP	– GBP	– GBP	1,000,000 GBP	– GBP	7,300,000 GBP	—	—	13,000,000 GBP	20,000,000 GBP	– GBP	– GBP	300,000 GBP	7,000,000 GBP
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	27,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	7,300,000 GBP
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	1,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	300,000 GBP