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Financial Instruments - Summary Of Credit Loss Rates (Detail)
Dec. 31, 2024
Not due | Commercial Aviation [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 1.25%
Not due | Executive Aviation [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.31%
Not due | Defence And Security [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.01%
Not due | OGMA Industria Aeronautica de Portugal SA [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.12%
Not due | All other segments [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 1.65%
Up to 90 days | Commercial Aviation [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 2.32%
Up to 90 days | Executive Aviation [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.74%
Up to 90 days | Defence And Security [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.03%
Up to 90 days | OGMA Industria Aeronautica de Portugal SA [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.29%
Up to 90 days | All other segments [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 3.84%
From 91 to 180 days [member] | Commercial Aviation [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 55.88%
From 91 to 180 days [member] | Executive Aviation [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 14.83%
From 91 to 180 days [member] | Defence And Security [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.36%
From 91 to 180 days [member] | OGMA Industria Aeronautica de Portugal SA [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 2.61%
From 91 to 180 days [member] | All other segments [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 10.05%
More than 180 days [member] | Commercial Aviation [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 100.00%
More than 180 days [member] | Executive Aviation [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 48.52%
More than 180 days [member] | Defence And Security [Member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 0.86%
More than 180 days [member] | OGMA Industria Aeronautica de Portugal SA [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 4.69%
More than 180 days [member] | All other segments [member]  
Disclosure of provision matrix [line items]  
Expected credit loss rate 38.38%