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Appendix IV: Financial Instruments - Derivative Financial Instruments Receivable / Payable (Details)
€ in Millions
 12 Months Ended
Dec. 31, 2024
EUR (€)
£ / €
Dec. 31, 2024
EUR (€)
$ / €
Dec. 31, 2024
EUR (€)
$ / $
Dec. 31, 2024
EUR (€)
R$ / €
Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging € 913 € 913 € 913 € 913
Average foreign exchange rate 0.83 1.12 3,755.96  
Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging € 5 € 5 € 5 5
Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 204 204 204 204
Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 16 16 16 16
Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 7 7 7 7
Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 34 34 34 34
Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 647 647 647 647
Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging € (1) € (1) € (1) € (1)
Average foreign exchange rate 0.83 1.08 4,457.11 6.35
Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging € 12 € 12 € 12 € 12
Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (13) (13) (13) (13)
Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 33 33 33 33
BRL | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 33 33 33 33
BRL | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 23 23 23 23
BRL | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 23 23 23 23
BRL | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (112) (112) (112) (112)
BRL | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (105) (105) (105) (105)
BRL | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (7) (7) (7) (7)
BRL | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (2,824) (2,824) (2,824) (2,824)
BRL | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (2,824) (2,824) (2,824) (2,824)
BRL | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
BRL | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1 1 1 1
CLP | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1 1 1 1
CLP | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (652) (652) (652) (652)
CLP | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (106) (106) (106) (106)
CLP | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (104) (104) (104) (104)
CLP | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (37) (37) (37) (37)
CLP | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (405) (405) (405) (405)
CLP | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (75) (75) (75) (75)
CLP | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (75) (75) (75) (75)
CLP | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CLP | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 411 411 411 411
COP | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 411 411 411 411
COP | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 62 62 62 62
COP | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 49 49 49 49
COP | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 13 13 13 13
COP | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (884) (884) (884) (884)
COP | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (411) (411) (411) (411)
COP | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (62) (62) (62) (62)
COP | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (411) (411) (411) (411)
COP | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (199) (199) (199) (199)
COP | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (199) (199) (199) (199)
COP | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
COP | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 93 93 93 93
CZK | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 93 93 93 93
CZK | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
CZK | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 2,821 2,821 2,821 2,821
EUR | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 16 16 16 16
EUR | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 256 256 256 256
EUR | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 2,549 2,549 2,549 2,549
EUR | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 4,616 4,616 4,616 4,616
EUR | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 4,350 4,350 4,350 4,350
EUR | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 266 266 266 266
EUR | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (12,829) (12,829) (12,829) (12,829)
EUR | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (46) (46) (46) (46)
EUR | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (2,352) (2,352) (2,352) (2,352)
EUR | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (3,728) (3,728) (3,728) (3,728)
EUR | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (448) (448) (448) (448)
EUR | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (6,255) (6,255) (6,255) (6,255)
EUR | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (841) (841) (841) (841)
EUR | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (841) (841) (841) (841)
EUR | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
EUR | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1,085 1,085 1,085 1,085
GBP | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 603 603 603 603
GBP | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 482 482 482 482
GBP | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 23 23 23 23
GBP | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 23 23 23 23
GBP | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (221) (221) (221) (221)
GBP | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (221) (221) (221) (221)
GBP | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
GBP | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 92 92 92 92
JPY | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 92 92 92 92
JPY | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
JPY | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 13 13 13 13
Mexican peso | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 13 13 13 13
Mexican peso | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (234) (234) (234) (234)
Mexican peso | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (234) (234) (234) (234)
Mexican peso | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
Mexican peso | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 25 25 25 25
PEN | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 25 25 25 25
PEN | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (462) (462) (462) (462)
PEN | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (461) (461) (461) (461)
PEN | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (1) (1) (1) (1)
PEN | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
PEN | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 148 148 148 148
UFC | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 111 111 111 111
UFC | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 37 37 37 37
UFC | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UFC | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 14,172 14,172 14,172 14,172
USD | Receive | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 621 621 621 621
USD | Receive | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 2,125 2,125 2,125 2,125
USD | Receive | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 3,800 3,800 3,800 3,800
USD | Receive | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 7,626 7,626 7,626 7,626
USD | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1,534 1,534 1,534 1,534
USD | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1,533 1,533 1,533 1,533
USD | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 1 1 1 1
USD | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Currency swaps        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (3,372) (3,372) (3,372) (3,372)
USD | Pay | Currency swaps | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (514) (514) (514) (514)
USD | Pay | Currency swaps | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (260) (260) (260) (260)
USD | Pay | Currency swaps | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (2,598) (2,598) (2,598) (2,598)
USD | Pay | Currency swaps | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Currency swaps | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Currency swaps | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (1,528) (1,528) (1,528) (1,528)
USD | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (1,236) (1,236) (1,236) (1,236)
USD | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (292) (292) (292) (292)
USD | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
USD | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Receive | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 28 28 28 28
UYU | Receive | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 28 28 28 28
UYU | Receive | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Receive | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Receive | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Receive | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Receive | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Pay | Forwards        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (35) (35) (35) (35)
UYU | Pay | Forwards | Less than 1 year        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging (35) (35) (35) (35)
UYU | Pay | Forwards | 2026        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Pay | Forwards | 2027        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Pay | Forwards | 2028        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Pay | Forwards | 2029        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging 0 0 0 0
UYU | Pay | Forwards | Subsequent years        
Disclosure of maturity analysis for derivative financial liabilities [line items]        
Derivative financial assets held for hedging € 0 € 0 € 0 € 0