XML 286 R136.htm IDEA: XBRL DOCUMENT v3.20.4
Capital and Funding - Summary of Currency Retranslation Reserve (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Movement in foreign currency translation reserve [abstract]    
Currency retranslation reserve beginning balance € (4,712) € (4,694)
Currency retranslation of group companies net assets and liabilities during the year (1,490) (341)
Movement in net investment hedges and exchange differences in net investments in foreign operations (866) 326
Recycled to income statement   (3)
Currency retranslation reserve ending balance € (7,068) € (4,712)