Group income statement [axis] Business performance [member] Exceptional items and certain re-measurements [member] Results for the year [member] Profit or loss [table] Profit or loss [line items] Group revenue Insurance services cost of sales Re-measurement and settlement of derivative energy contracts Operating costs before insurance services operating costs, exceptional items and credit losses on financial assets Insurance services operating costs Credit losses on financial assets Exceptional items – (impairment)/write-back of power assets Exceptional items - impairment of gas storage asset Exceptional items - net loss on significant disposals Interim dividend paid per ordinary share Cost of sales - onerous energy supply contract provision Exchange differences reclassified to Group Income Statement on disposal Exchange differences on translation of foreign operations, attributable to equity holders of parent Exchange differences on translation of foreign operations, attributable to non-controlling interests Share buyback programme Non-current securities Current trade and other receivables, and contract-related assets Other intangible assets, current assets Current securities Current trade and other payables, and contract-related liabilities Non- current trade and other payables, and contract-related liabilities Group operating (loss)/profit before share of results of joint ventures and associates Adjustments for loss on disposals Adjustments for unrealised losses/(gains) arising from re-measurement of energy contracts Operating cash flows before payments relating to taxes, exceptional charges and operating interest Payments relating to exceptional charges in operating costs classified as operating activities Investments in joint ventures and associates classified as investing activities Share buyback programme classified as financing activities Description of accounting policy for use of adjusted performance measures Description of accounting policy for exceptional items and certain re-measurements Disclosure of share of results of joint ventures and associates Disclosure of exceptional items and certain re-measurements Disclosure of sources of finance Description of accounting policy for cost of sales Description of accounting policy for remeasurement and settlement of energy contracts Description of accounting policy for cloud computing arrangements Description of accounting policy for UK & EU emissions trading scheme Description of accounting poliicy for renewable certificates Description of accounting policy for overlift and underlift Description of accounting policy for securities Description of accounting policy for other investments Description of accounting policy for nuclear activity