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Note 52 - Accountant Fees And Services - Auditors Remuneration For Audit Services (Details) - EUR (€)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Auditors Remuneration Abstract      
Audits Of The Companies Audited By Firms Belonging To The KPMG Worldwide Organizartions And Other Reports a Related With The Audit [1],[2] € 27,700,000 € 28,100,000 € 26,100,000
Issued By The National Supervisory Bodies Of The Countries In Which The Group Operates Reviewed By Firms Belonging To The KPMG Worldwide Organization [1] 1,300,000 1,500,000 1,500,000
Fees For Audits Conducted By Other Firms [1] € 200,000 € 0 € 100,000
[1]

(**) Regardless of the billed year.

[2]

(*) Including fees pertaining to annual legal audits (€23.6, €24.1 and €22.4 million as of December 31, 2020, 2019 and 2018, respectively).