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Share Capital - Summary of Ordinary Shares (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disclosure of classes of share capital [line items]      
Opening Balance € 290,826 € 250,395 € 323,467
Issue of equity   117,215 47,713
Closing Balance 300,806 290,826 250,395
Share premium [member]      
Disclosure of classes of share capital [line items]      
Opening Balance 137,285 70,161 45,882
Closing Balance € 0 € 137,285 € 70,161
Ordinary shares [member]      
Disclosure of classes of share capital [line items]      
Opening Balance Issued and paid (Shares) 371,386,000 289,165 265,731
Opening Balance € 339,259 € 289,165 € 265,731
Ending Balance Issued and paid (Shares) 0 371,386,000 289,165
Closing Balance   € 339,259 € 289,165
Series B Preferred Stock [Member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Opening Balance € 143,739    
Issue of equity   67,124  
Closing Balance   € 143,739  
Series B Preferred Stock [Member] | Ordinary shares [member]      
Disclosure of classes of share capital [line items]      
Opening Balance Issued and paid (Shares) 389,955    
Opening Balance € 357,828    
Increase (decrease) in number of shares outstanding 18,569,000 50,091,000  
Issue of equity € 18,569 € 50,091  
Ending Balance Issued and paid (Shares)   389,955  
Closing Balance   € 357,828  
Series B Preferred Stock [Member] | Ordinary shares [member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Issue of equity € 6,454    
Class B Nonvoting [Member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Issue of equity   € 0  
Class B Nonvoting [Member] | Ordinary shares [member]      
Disclosure of classes of share capital [line items]      
Increase (decrease) in number of shares outstanding   32,130,000  
Issue of equity   € 3  
Conversion from FFG Shares to LGHL ordinary shares at 0.26926188 [Member] | LGHL ordinary shares [Member]      
Disclosure of classes of share capital [line items]      
Increase (decrease) in number of shares outstanding 105,000,000    
Conversion from FFG Shares to LGHL ordinary shares at 0.26926188 [Member] | LGHL ordinary shares [Member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Issue of equity € 143,739    
Ordinary Shares To Third Party Investors [Member] | Ordinary shares [member]      
Disclosure of classes of share capital [line items]      
Increase (decrease) in number of shares outstanding     23,434
Issue of equity     € 23,434
Ordinary Shares To Third Party Investors [Member] | Ordinary shares [member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Issue of equity     € 24,279
Exchange of LGHL ordinary shares as part of Reverse Recapitalization [Member] | Share premium [member]      
Disclosure of classes of share capital [line items]      
Issue of equity € (143,739)    
Exchange of LGHL ordinary shares as part of Reverse Recapitalization [Member] | Ordinary shares [member]      
Disclosure of classes of share capital [line items]      
Increase (decrease) in number of shares outstanding (105,000,000)