Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Capital management - Summary of Covenant Ratios Are Determined Based on a Twelvemonth Running Basis (Detail)

v3.22.1
Capital management - Summary of Covenant Ratios Are Determined Based on a Twelvemonth Running Basis (Detail) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Statements [Line Items]    
EBITDA margin 3.77% 25.84%
EBITDA € 3.6 € 15.3
Interest coverage 17.78 16.20
December 31, 2020 [Member]    
Statements [Line Items]    
EBITDA margin (26.03%)  
EBITDA € 18.4  
Interest coverage 11.26  
June 30, 2021 [Member]    
Statements [Line Items]    
EBITDA margin (13.12%)  
EBITDA € 13.2  
Interest coverage 10.00  
December 31, 2021 [Member]    
Statements [Line Items]    
EBITDA margin (6.29%)  
EBITDA € 8.2  
Interest coverage 10.50  
June 30, 2022 [Member]    
Statements [Line Items]    
EBITDA margin 1.18%  
Interest coverage 11.80  
December 31, 2022 [Member]    
Statements [Line Items]    
EBITDA margin 2.15%  
Interest coverage 12.78  
June 30, 2023 [Member]    
Statements [Line Items]    
EBITDA margin 3.16%  
Interest coverage 14.19  
December 31, 2023 [Member]    
Statements [Line Items]    
EBITDA margin 3.90%  
Interest coverage 15.48  
June 30, 2024 [Member]    
Statements [Line Items]    
EBITDA margin 4.57%  
Interest coverage 17.06  
December 31, 2024 [Member]    
Statements [Line Items]    
EBITDA margin 5.11%  
Interest coverage 18.77  
June 30, 2025 [Member]    
Statements [Line Items]    
EBITDA margin 5.37%  
Interest coverage 21.60  
December 31, 2025 [Member]    
Statements [Line Items]    
EBITDA margin 5.55%  
Interest coverage 24.21