Cash Disposed On Sale Of Italian Domestic Operations Non Current Preference Shares In Joint Ventures Non Current Preference Shares In Joint Ventures Proceeds On Disposal Of Current Financial Assets Classified As Investing Activities Proceeds On Disposal Of Current Financial Assets Classified As Investing Activities Group Income Statement [Member] Group Income Statement Movement In Capital Accruals Movement In Capital Accruals Disclosure Of Specific Items [Text Block] Disclosure Of Specific Items Increase (Decrease) In Amounts Owed To Joint Ventures, Classified As Financing Activities Increase (Decrease) In Amounts Owed To Joint Ventures, Classified As Financing Activities Specific Items [Table] Settlement Of Minimum Guarantee Liability With Sports Joint Venture Classified As Investing Activities Settlement Of Minimum Guarantee Liability With Sports Joint Venture Classified As Investing Activities Transferred To The Income Statement Cash flows from (used in) financing activities Cash Flows From (Used In) Derivatives Related To Net Debt, Classified As Financing Activities Cash Flows From (Used In) Derivatives Related To Net Debt, Classified As Financing Activities Cash flows from (used in) investing activities Proceeds From Investment In Preference Shares In Joint Venture Proceeds From Investment In Preference Shares In Joint Venture Description Of Accounting Policy For Deferred Contract Costs [Text Block] Description Of Accounting Policy For Deferred Contract Costs Adjustments For Impairment Loss (Reversal) On Remeasurement Of Disposal Groups Adjustments For Impairment Loss (Reversal) On Remeasurement Of Disposal Groups Additions To Spectrum Additions To Spectrum Net buyback of own shares Net buyback of own shares Cash flows from (used in) operating activities Specific Items [Member] Specific Items Finance income (cost) Bank Overdrafts Excluded From Cash And Cash Equivalents Bank Overdrafts Excluded From Cash And Cash Equivalents Description Of Accounting Policy For Defined Contribution Plans [Text Block] Description Of Accounting Policy For Defined Contribution Plans Description Of Accounting Policy For Contract Assets And Liabilities [Text Block] Description Of Accounting Policy For Contract Assets And Liabilities Total equity and non-current liabilities Total Equity And Non Current Liabilities Total Equity And Non Current Liabilities Cash and cash equivalents if different from statement of financial position Cash and cash equivalents if different from statement of financial position Current Preference Shares In Joint Ventures Current Preference Shares In Joint Ventures Description Of Accounting Policy For Defined Benefit Plans [Text Block] Before Specific Items [Member] Before Specific Items Additions To Property, Plant And Equipment And Software Additions To Property, Plant And Equipment And Software Pension Deficit Payment Included In Adjustments For Other Liabilities Pension Deficit Payment Included In Adjustments For Other Liabilities Cash flows from (used in) operations Specific Items [Line Items] Specific Items [Line Items] (Increase) Decrease In Amounts Owed By Joint Ventures Classified As Investing Activities (Increase) Decrease In Amounts Owed By Joint Ventures Classified As Investing Activities Assets less current liabilities Adjustments For Losses (Gains) On Fair Value Adjustment, Joint Ventures Adjustments For Losses (Gains) On Fair Value Adjustment, Joint Ventures Adjustments For (Increase) Decrease In Contract Assets Adjustments For (Increase) Decrease In Contract Assets Adjustments For Losses (Gains) On Disposal Of Property, Plant And Equipment And Intangible Assets Adjustments For Losses (Gains) On Disposal Of Property, Plant And Equipment And Intangible Assets Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Purchases Of Current Financial Assets Classified As Investing Activities Purchases Of Current Financial Assets Classified As Investing Activities Adjustments For Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Joint Ventures Adjustments For Impairment Loss (Reversal Of Impairment Loss) Recognised In Profit Or Loss, Joint Ventures Group Income Statement [Axis] Group Income Statement