The cash outflow for loans and advances made to related parties. [Refer: Related parties [member]]

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The amount of compensation to key management personnel in the form of other long-term employee benefits. [Refer: Other long-term employee benefits; Key management personnel of entity or parent [member]]

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The amount of compensation to key management personnel in the form of post-employment benefits. [Refer: Key management personnel of entity or parent [member]]

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The nominal value per share.

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Net earned premiums.

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Group Information - Additional Information (Detail) - EUR (€)	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of transactions between related parties [line items]
Par value per share	€ 2.58	€ 3.05	€ 5.32
Insurance Premium Used For Settlement Of Damages		€ 996,000	€ 1,580,000
Class A Common Share [Member] \| Enric Asuncin Escorsa [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	387,597	65,574	921,053
Class A Common Share [Member] \| Orilla Asset Management, S.L. [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	7,751,938	327,869	3,759,399
Class A Common Share [Member] \| AM Gesti, S.L. [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	1,937,985		751,880
Class A Common Share [Member] \| S.L Inversiones Finanncieras Perseo S.L [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period		98,361	375,940
Class A Common Share [Member] \| Anangu Grup, S.L. [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	387,597
Class A Common Share [Member] \| Consilium S.L [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	6,429,330
Class A Common Share [Member] \| Black Label Equity I SCR S.A [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period	1,937,985
Infisol Shares [Member] \| AM Gesti, S.L. [Member]
Disclosure of transactions between related parties [line items]
Number of shares acquired during the period			3,000
Remuneration of Directors and Key Management [Member]
Disclosure of transactions between related parties [line items]
Loans And Advances To Senior Management		€ 0	€ 0
Members of Senior Management [Member]
Disclosure of transactions between related parties [line items]
Key management personnel Post employment benefit expense		0	0	€ 0
Key management personnel pension or life insurance obligations		€ 0	€ 0