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Commitments and contingencies - Narrative (Details)
 1 Months Ended 12 Months Ended
Jun. 09, 2022
USD ($)
Mar. 31, 2022
USD ($)
Oct. 31, 2013
USD ($)
Jul. 31, 2011
USD ($)
claim
Dec. 31, 2022
USD ($)
Dec. 31, 2008
USD ($)
Dec. 31, 2006
USD ($)
Jun. 30, 2023
USD ($)
helicopter
aircraft
engine
Feb. 23, 2022
engine
aircraft
Dec. 31, 1992
engine
aircraft
Loss Contingencies [Line Items]                    
Loss contingency, insurance coverage claimable by entity   $ 3,500,000,000     $ 3,500,000,000          
Russian Operator Reinsurance Claims                    
Loss Contingencies [Line Items]                    
Gain contingency, unrecorded amount               $ 4,100,000,000    
Russia                    
Loss Contingencies [Line Items]                    
Number of aircraft on lease | aircraft                 135  
Number of engines on lease | engine                 14  
AIG Europe S.A. English Court                    
Loss Contingencies [Line Items]                    
Loss contingency, insurance coverage claimable by entity $ 3,500,000,000                  
Lloyds Insurance Company S.A. English Court                    
Loss Contingencies [Line Items]                    
Loss contingency, insurance coverage claimable by entity $ 1,200,000,000                  
VASP Litigation | VASP litigation English court                    
Loss Contingencies [Line Items]                    
Damages awarded             $ 40,000,000      
Claim award for loss of profit plus accrued interest           $ 40,000,000        
VASP Litigation | VASP litigation Irish court                    
Loss Contingencies [Line Items]                    
Damages awarded             $ 36,900,000      
Claim award for loss of profit plus accrued interest           $ 24,000,000        
VASP Litigation | Aircraft                    
Loss Contingencies [Line Items]                    
Number of leased assets | aircraft                   13
Number of leases that company incurred obligations due to another company's default | aircraft                   13
VASP Litigation | Engines                    
Loss Contingencies [Line Items]                    
Number of leased assets | engine                   3
Number of leases that company incurred obligations due to another company's default | aircraft                   3
Transbrasil Litigation                    
Loss Contingencies [Line Items]                    
Number of actions | claim       3            
Aggregate amount due from AerCap       $ 210,000,000            
Damages suffered     $ 0              
Capital Addition Purchase Commitments                    
Loss Contingencies [Line Items]                    
Number of aircraft forward orders | aircraft               399    
Unrecorded unconditional purchase obligation, Number of engines | engine               11    
Unrecorded unconditional purchase obligation, Number of helicopters | helicopter               16