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Restricted cash
12 Months Ended
Dec. 31, 2017
Cash and Cash Equivalents [Abstract]  
Restricted cash
Restricted cash
Our restricted cash balance was $364.5 million and $329.2 million as of December 31, 2017 and 2016, respectively, and was primarily related to our ECA financings, our Ex-Im financings, our AerFunding revolving credit facility and other debt. See Note 15Debt.