Nature of Operations and Summary of Significant Accounting Policies (Details 3) (USD $) In Millions, unless otherwise specified			12 Months Ended			12 Months Ended			12 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Aircraft and rotable spares Maximum	Dec. 31, 2013 Aircraft and rotable spares Minimum	Dec. 31, 2013 Ground equipment	Dec. 31, 2013 Ground equipment Maximum	Dec. 31, 2013 Ground equipment Minimum	Dec. 31, 2013 Office equipment	Dec. 31, 2013 Office equipment Maximum	Dec. 31, 2013 Office equipment Minimum	Dec. 31, 2013 Leasehold improvements	Dec. 31, 2013 Buildings	Dec. 31, 2013 Buildings Maximum	Dec. 31, 2013 Buildings Minimum
Inventories
Inventory allowance	$ 10.1	$ 9.2
Property and equipment
Depreciable Life			18 years	10 years		10 years	5 years		7 years	5 years	15 years		39 years 6 months	20 years
Residual Value (as a percent)			30.00%	0.00%	0.00%			0.00%			0.00%	0.00%