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Note 15 Investments In Subsidiaries Joint Ventures And Associates (Details) - EUR (€)
€ in Millions
Jun. 30, 2022
Dec. 31, 2021
Disclosure of Investments in subsidiaries joint ventures and associates [Line Items]    
Investments in joint ventures € 99 € 152
Investments in associates 796 749
Investments in subsidiaries, joint ventures and associates € 894 € 900