Note 9 - Commitments Statement (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 Engines Aircraft	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
number of leased aircraft under operating leases	76
Number of Spare Engines under Operating Leases	29
minimum guaranteed maintenance payments for E145s	$ 2.6
minimum guaranteed maintenance payments for E170 aircraft	10.3
Maintenance deposits	53.2	36.6
Cost of Services, Licenses and Maintenance Agreements	173.0	163.8	119.4
liability for return conditions of aircraft	2.3
E190 aircraft with maintenance commitments	3
E145 Aircraft subelased to Aeroliteral	8
E170 Aircraft that were subleased to Aeroliteral	3
Number of E190 Aircraft that were subleased to Aeroliteral	3
number of E135 aircraft subleased	1
number of E145 aircraft subleased	3
Capital Leases, Future Minimum Sublease Rentals	104.0
Operating Leases, Income Statement, Sublease Revenue	$ 20.1	$ 18.7	$ 15.9
Firm Purchase Orders for CS300 Aircraft	40
Amended number of E175 aircraft agreed upon to operate under American Eagle brand	47
number of E175 aircraft under CPA for American	41
Number of E175 aircraft to operate under United brand	55
Number of Spare Aircraft Engines under commitment	11
Number of spare engines received during the current year, under the commitment	3
Number of engines to be delivered in year 1	4
Number of Engines to be Delivered in Year Two	3
Number of Engines to be Delivered in Year Three	1