Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 223.9	$ 276.7
Restricted cash	21.7	24.0
Receivables - net of allowance for doubtful accounts of $2.6 and $1.5, respectively	20.7	48.3
Inventories	60.9	71.9
Prepaid expenses and other current assets	15.6	17.7
Deferred income taxes	16.4	15.7
Total current assets	359.2	454.3
Aircraft and other equipment, net	2,860.9	2,563.6
Maintenance deposits	53.2	36.6
Intangible and other assets, net	220.7	216.8
Total assets	3,494.0	3,271.3
Current Liabilities:
Current portion of long-term debt	309.0	276.2
Accounts payable	19.3	28.9
Accrued Liabilities, Current	142.9	163.8
Total current liabilities	471.2	468.9
Long-term debt - less current portion	2,030.2	1,890.6
Deferred credits and other non-current liabilities	88.1	100.7
Deferred income taxes	284.0	260.4
Total liabilities	2,873.5	2,720.6
Commitments and contingencies
Stockholders' Equity:
Preferred stock, $.001 par value; 5,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $.001 par value; one vote per share; 150,000,000 shares authorized; 59,821,243 and 59,704,943 shares issued and 50,024,780 and 49,525,594 shares outstanding, respectively	0	0
Additional paid-in capital	427.4	420.2
Treasury stock, 9,546,147 and 9,333,266 shares at cost, respectively	(183.9)	(181.8)
Accumulated other comprehensive loss	(2.2)	(2.6)
Retained Earnings (Accumulated Deficit)	379.2	314.9
Stockholders' Equity Attributable to Parent	620.5	550.7
Total liabilities and stockholders' equity	$ 3,494.0	$ 3,271.3