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FLEET TRANSITION EXPENSES FLEET TRANSITION EXPENSES (Tables)
6 Months Ended
Jun. 30, 2012
Fleet Transition Expenses [Abstract]  
Schedule of Restructuring and Related Costs [Table Text Block]
Fleet transition expenses included in the consolidated statements of operations (in millions):
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2012
 
2011
 
2012
 
2011
Horizon Fleet Transition - CRJ-700
$

 
$
20.8

 
$

 
$
30.9

Horizon Fleet Transition - Q200

 
6.0

 

 
6.0

Total
$

 
$
26.8

 
$

 
$
36.9