Commitments, Contingencies, Guarantees and Indemnities (Details 2) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Oct. 31, 2006 item	Mar. 31, 2014 item
Engines and related equipment
Purchase commitments
Number of items to be purchased		3
CFM56-7B and CFM56-5B spare engines | CFM
Purchase commitments
Maximum number of items to be purchased	45
Commitment period	5 years
Option to purchase additional quantity	30
Number of engines for which purchase orders are outstanding		1
Aircraft and related equipment
Purchase commitments
Number of items to be purchased		1
Engines, aircraft and related equipment
Purchase commitments
Purchase price		$ 36.2
Non-refundable deposits paid		$ 2.0