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Nota 25 - Post-employment and other employee benefit commitments. Investments in listed markets (Details) - Level 1 Of Fair Value Hierarchy Member
€ in Millions
Dec. 31, 2018
EUR (€)
Cash And Cash Equivalents [Member]  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan € 26
Debt Instruments [Member]  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan 2,080
Investment Funds Member  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan 2
Total [Member]  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan 2,109
Bank Account In Bbva [Member]  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan 3
Debt Securities Issued By Bbva [Member]  
Disclosure Of Fair Value Of Plan Assets Line Items  
Assets Of Benefit Plan € 0