XML 138 R124.htm IDEA: XBRL DOCUMENT v3.20.4

Related party transactions (Narrative) (Details)	12 Months Ended
	Dec. 31, 2020 aircraft
Arctic Aviation Assets DAC
Related Party Transaction [Line Items]
Number of aircraft sold	3

X

- Definition

Number Of Aircrafts Sold

+ References

No definition available.

+ Details

Name:	aer_NumberOfAircraftsSold
Namespace Prefix:	aer_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=aer_ArcticAviationAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: