Leases (Details) (B-717-200 Aircraft, USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jul. 09, 2012 aircraft
Aircraft Type [Line Items]
Lessee	Delta Air Lines, Inc.
Total assets available for lease/sublease, number of units			88
Operating lease, number of units			78
Owned assets, number of units			8
Capital leased assets, number of units			2
Lease terms for owned aircraft	7 years
Contingent payments	$ 0
Residual value	0
Estimated loss on sublease		137,000,000
Contingent termination penalties	$ 106,000,000
Remainder of Current Year
Aircraft Type [Line Items]
Number of aircraft expected to be delivered to sublessee	16
Maximum
Aircraft Type [Line Items]
Sublease terms for leased aircraft	11 years
Minimum
Aircraft Type [Line Items]
Sublease terms for leased aircraft	5 years