Consolidated income statements [axis] Before non-underlying items [member] Non-underlying items [member] Total [member] Profit or loss [table] Profit or loss [line items] Earnings before interest, tax, depreciation and amortisation Net finance costs Consolidated statement of comprehensive income [axis] Total [member] Statement of comprehensive income [table] Statement of comprehensive income [line items] Net current assets Net assets Retained earnings and other reserves Retained earnings and other reserves [member] Shares issued Own shares acquired by the Pennon Employee Share Trust in respect of share options granted Total transactions with equity shareholders Rights issue Transaction costs relating to rights issue Net cash generated/(outflow) from operating activities Acquisition of subsidiaries net of cash acquired, classified as investing activities Net cash received from/(used in) investing activities Purchase of ordinary shares by the Pennon Employee Share Trust, classified as financing activities Cash inflows from lease financing arrangements classified as financing activities Net cash (used in)/received from financing activities Net increase in cash and cash equivalents Description of accounting policy for transfers of assets from customers Description of accounting policy for variable consideration Description of accounting policy for acquisitions of group of assets that do not constitute a business Disclosure of non-underlying items Disclosure of profit of the parent company Disclosure of net borrowings