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Financial Risks - Summary Of Maturity Analysis For Derivative Financial Instruments (Detail) - EUR (€) € in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | € 14,292 | € 4,078
Cash outflows | (14,126) | (6,614)
Carrying value [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 36,357 | 64,101
Cash outflows | (33,619) | (62,141)
Not later than 1 year [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 865 | 156
Cash outflows | (983) | (66)
Not later than 1 year [member] | Carrying value [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 17,162 | 23,453
Cash outflows | (17,056) | (23,143)
1-5 years [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 3,091 | 709
Cash outflows | (2,594) | (288)
1-5 years [member] | Carrying value [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 3,098 | 8,092
Cash outflows | (2,922) | (7,351)
Over 5 through 10 years [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 3,537 | 982
Cash outflows | (2,832) | (516)
Over 5 through 10 years [member] | Carrying value [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 4,470 | 11,323
Cash outflows | (3,570) | (10,832)
Over 10 years [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 6,798 | 2,230
Cash outflows | (7,716) | (5,743)
Over 10 years [member] | Carrying value [member] |  |
Disclosure of maturity analysis for derivative financial liabilities [line items] |  |
Cash inflows | 11,628 | 21,233
Cash outflows | € (10,071) | € (20,816)

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- Definition Derivative financial liabilities undiscounted cash inflows net. + References No definition available. + Details
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