Supplemental Guarantor Financial Information (Narrative) (Details)	12 Months Ended
Dec. 31, 2015 USD ($)
AerCap Aviation Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 300,000,000
Stated interest rate	6.375%
AerCap Aviation Notes [Member] \| AerCap Aviation Solutions B.V [Member]
Debt Instrument [Line Items]
Ownership interest	100.00%
Acquisition Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 2,600,000,000
2017 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 400,000,000
Stated interest rate	2.75%
2019 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 1,100,000,000
Stated interest rate	3.75%
2021 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 1,100,000,000
Stated interest rate	4.50%
September 2014 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 800,000,000
Stated interest rate	5.00%
June 2015 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 1,000,000,000
2022 Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 500,000,000
Stated interest rate	4.625%
Citi Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, current borrowing capacity	$ 285,000,000

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611443-123010

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