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Note 21 - Statement Of Cash Flows From Disposable Groups (Details) - EUR (€)
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Net Increase Or Decrease In Cash And Cash Equivalents From Disposable Groups      
Cash Flows From Operating Activities From Disposable Groups € 6,874,000,000 € 3,888,000,000 € (228,000,000)
Cash Flows From Investing Activities From Disposable Groups (145,000,000) (133,000,000) (123,000,000)
Cash Flows From Financing Activities From Disposable Groups (65,000,000) (468,000,000) (256,000,000)
Effect Of Exchange Rate Variations From Disposable Groups (974,000,000) 65,000,000 84,000,000
Total Increase Or Decrease Net Cash And Cash Equivalents USA € 5,690,000,000 € 3,352,000,000 € (522,000,000)