Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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The maximum additional number of assets pledged as collateral in case the Company has obligations related to its fuel derivative instruments with counterparties that exceed certain thresholds

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of debt premium that was originally recognized at the issuance of the instrument that has yet to be amortized.

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The amount of the liability for the conversion option reclassified to stockholders' equity when the embedded option no longer required separation from the host instrument.

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Gross amount of debt extinguished.

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Long-term Debt (Details)				1 Months Ended	3 Months Ended	12 Months Ended
Long-term Debt (Details)	Apr. 29, 2009 USD ($) Mortgages	May. 06, 2008 USD ($) Mortgages	Feb. 28, 1997 USD ($)	Oct. 31, 2009 USD ($) $ / shares shares	Dec. 31, 2004 USD ($) Mortgages Agreements	Dec. 31, 2015 USD ($) aircraft Mortgages	Dec. 31, 2014 USD ($)	Nov. 06, 2014 USD ($)	Jul. 01, 2009 USD ($) Mortgages	Oct. 03, 2007 USD ($) Mortgages	Dec. 31, 2006 USD ($)	Feb. 28, 2005 USD ($)
Debt Instrument [Line Items]
Encumbered Aircraft Released \| aircraft						1
Encumbered Aircraft Remaining \| aircraft						4
Letters of Credit Outstanding Amount						$ 184,000,000
Net book value of assets pledged as collateral for the Company's secured borrowings, primarily aircraft and engines						2,000,000,000
Net book value of additional assets pledged as collateral in case obligations related to fuel derivatives exceed certain thresholds						2,500,000,000.0
Long-term Debt, by Maturity [Abstract]
2016						617,000,000
2017						528,000,000
2018						272,000,000
2019						522,000,000
2020						751,000,000
Thereafter						424,000,000
AirTran Airways \| Interest rate derivatives
Debt Instrument [Line Items]
Notional amount						$ 208,000,000
AirTran Airways \| Maximum \| Interest rate derivatives
Debt Instrument [Line Items]
Interest rate stated in the debt agreement (in hundredths)						6.435%
Floating-rate 737 Aircraft Notes payable through 2020 \| AirTran Airways
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages						19
Weighted average interest rate						1.86%
Fixed-rate 737 Aircraft Notes payable through 2018 - 7.02% \| AirTran Airways
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| aircraft						3
Weighted average interest rate						7.02%
5.25% Convertible Senior Notes due 2016
Debt Instrument [Line Items]
Conversion ratio \| shares				54.1391
Conversion price \| $ / shares				$ 615.16
5.25% Convertible Senior Notes due 2016 \| AirTran Airways
Debt Instrument [Line Items]
Face amount of debt				$ 115,000,000
Interest rate stated in the debt agreement (in hundredths)				5.25%
Conversion ratio \| shares				168.6576
Extinguishment of debt amount						$ 5,000,000
Repurchase price percentage						100.00%
Conversion option, amount							$ 35,000,000
Unamortized premium							$ 10,000,000
2.65% Notes due 2020
Debt Instrument [Line Items]
Face amount of debt						$ 500,000,000
Interest rate stated in the debt agreement (in hundredths)						2.65%
2.75% Unsecured Senior Notes Due 2019
Debt Instrument [Line Items]
Face amount of debt								$ 300,000,000
Interest rate stated in the debt agreement (in hundredths)								2.75%
Term Loan Agreement due 2019 - 4.84%
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages									5
Interest rate stated in the debt agreement (in hundredths)									4.84%
Debt Instrument, Prepayment Amount									$ 24,000,000
Term Loan Agreement due 2019 - 4.84% \| Maximum
Debt Instrument [Line Items]
Face amount of debt									$ 124,000,000
Term Loan Agreement due 2019 - 6.315%
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages	14
Interest rate stated in the debt agreement (in hundredths)	6.315%
Term Loan Agreement due 2019 - 6.315% \| LIBOR
Debt Instrument [Line Items]
Spread on variable rate	3.30%
Term Loan Agreement due 2019 - 6.315% \| Maximum
Debt Instrument [Line Items]
Face amount of debt	$ 332,000,000
Term Loan Agreement due 2020 - 5.223%
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages		21
Face amount of debt		$ 600,000,000
Interest rate stated in the debt agreement (in hundredths)		5.223%
Term Loan Agreement due 2020 - 5.223% \| LIBOR
Debt Instrument [Line Items]
Spread on variable rate		0.95%
Pass Through Certificates due 2022 - 6.24%
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages										16
Face amount of debt										$ 500,000,000
Pass Through Certificates due 2022 - 6.24% \| Interest rate derivatives \| Cash Flow Hedging
Debt Instrument [Line Items]
Notional amount										20,000,000
Pass Through Certificates Series A
Debt Instrument [Line Items]
Face amount of debt										$ 412,000,000
Interest rate stated in the debt agreement (in hundredths)										6.15%
Pass Through Certificates Series B
Debt Instrument [Line Items]
Face amount of debt										$ 88,000,000
Interest rate stated in the debt agreement (in hundredths)										6.65%
5.75% Notes due 2016
Debt Instrument [Line Items]
Face amount of debt											$ 300,000,000
Interest rate stated in the debt agreement (in hundredths)											5.75%
5.125% Notes due 2017
Debt Instrument [Line Items]
Face amount of debt												$ 300,000,000
Interest rate stated in the debt agreement (in hundredths)												5.125%
French Credit Agreements due 2018 - 1.53%
Debt Instrument [Line Items]
Number of mortgages on secured aircraft \| Mortgages					4
Face amount of debt					$ 112,000,000
Number of identical floating rate financing agreements entered into concurrently with French banking partnerships \| Agreements					4
Term					13 years
French Credit Agreements due 2018 - 1.53% \| LIBOR
Debt Instrument [Line Items]
Spread on variable rate					(0.45%)
7.375% Debentures due 2027
Debt Instrument [Line Items]
Face amount of debt			$ 100,000,000
Interest rate stated in the debt agreement (in hundredths)			7.375%
7.375% Debentures due 2027 \| Treasury Rate
Debt Instrument [Line Items]
Spread on variable rate			20.00%
Enhanced Equipment Trust Certificate \| Pass Through Certificates due 2022 - 6.24%
Debt Instrument [Line Items]
Interest rate stated in the debt agreement (in hundredths)						6.24%
B-737-700
Debt Instrument [Line Items]
Maximum additional number of assets pledged as collateral in case obligations related to fuel derivatives exceed certain thresholds \| aircraft						88
B-737-800
Debt Instrument [Line Items]
Maximum additional number of assets pledged as collateral in case obligations related to fuel derivatives exceed certain thresholds \| aircraft						12