Leases (Details) (USD $)	3 Months Ended					3 Months Ended
	Mar. 31, 2013 aircraft	Jun. 30, 2014 B-717-200 Aircraft aircraft	Sep. 30, 2012 B-717-200 Aircraft	Jul. 09, 2012 B-717-200 Aircraft aircraft	Jun. 30, 2014 B-717-200 Aircraft Remainder of Current Year aircraft	Jun. 30, 2014 Maximum B-717-200 Aircraft	Jun. 30, 2014 Minimum B-717-200 Aircraft
Aircraft Type [Line Items]
Lessee		Delta Air Lines, Inc.
Total assets available for lease/sublease, number of units				88
Number of aircraft expected to be delivered to sublessee					36
Number of Aircraft Expected To Be Converted to Sublease Per Month		3
Transfer from leased to owned aircraft	2
Operating lease, number of units		76
Owned assets, number of units		10
Capital leased assets, number of units		2
Sublease terms for leased aircraft						9 years	2 years
Lease terms for owned aircraft		7 years
Contingent payments		$ 0
Residual value		0
Estimated loss on sublease			137,000,000
Additional Estimated Loss on Sublease		$ 17,000,000