LONG-TERM DEBT AND REVOLVING CREDIT FACILITY	3 Months Ended
LONG-TERM DEBT AND REVOLVING CREDIT FACILITY	Mar. 31, 2013
Debt Disclosure [Abstract]
LONG-TERM DEBT AND REVOLVING CREDIT FACILITY	LONG-TERM DEBT AND REVOLVING CREDIT FACILITY AirTran Long-Term Debt During the first quarter of 2013, the Company prepaid six separate AirTran aircraft secured term loans in the amount of $119 million. The remaining 20 floating-rate 737 aircraft notes payable continue to be financed and mature in years 2016 to 2020. See Note 5 for further information about the impact of the interest rate hedge associated with these transactions. Unsecured Revolving Credit Facility On April 2, 2013, the Company entered into a new $1 billion unsecured revolving credit facility expiring in April 2018, and terminated its previous facility, which would have expired in April 2016. Other than an increased borrowing capacity, this new facility is substantially the same as the previous facility. Interest on the facility is based on the Company's credit ratings at the time of borrowing. At the Company's current ratings, the interest cost would be LIBOR plus a spread of 150 basis points. The new facility also contains the same financial covenant as the previous facility, requiring a minimum coverage ratio of adjusted pre-tax income to fixed obligations, as defined. As of March 31, 2013, the Company was in compliance with this covenant in its previous $800 million facility, and there were no amounts outstanding under the revolving credit facility.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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