Components of other comprehensive income - Additional Information (Detail) € in Millions |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Dec. 31, 2025
EUR (€)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
EUR (€)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
EUR (€)
|
Dec. 31, 2023
USD ($)
|
|
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||
| Other comprehensive income unrealised gain | € | € 228 | |||||
| Other comprehensive income unrealised loss | € | € 458 | € 196 | ||||
| Top of range [member] | ||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||
| Other comprehensive income, net of tax, change in value of foreign currency basis spreads | $ | $ 1,175,000 | $ 1,105,000 | $ 1,105,000 | |||
| Bottom of range [member] | ||||||
| Disclosure of analysis of other comprehensive income by item [line items] | ||||||
| Other comprehensive income, net of tax, change in value of foreign currency basis spreads | $ | $ 1,038,900.0000 | $ 1,038,900.0000 | $ 1,066,600.0000 | |||