Aircraft Related Charges Gains Net

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- Definition

Debt instrument maturity year

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No definition available.

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- Definition

Goodwill Impairment Credit

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No definition available.

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- Definition

Labor agreement costs, Settled with Cash

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- Definition

Number Of Flight Attendants Offering To Retire Early

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No definition available.

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- Definition

Number of flight attendants voluntarily on leave

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No definition available.

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- Definition

Number of mechanics offering to retire early

+ References

No definition available.

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- Definition

The effective interest rate on the liability component of convertible debt instrument which may be settled in cash upon conversion, including partial cash settlement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 20

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- Definition

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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- Definition

Interest rate stated in the contractual debt agreement.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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The loss recognized on termination of a contract.

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Amount of payroll tax expense, compensation, postemployment and benefit-related expenses not elsewhere specified in the taxonomy (such as health plan, profit sharing, incentives, tuition reimbursement, other fringe benefits and perquisites) incurred in the period.

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Period expense related to postemployment benefits.

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Merger and Integration-Related Costs and Special Items - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended						12 Months Ended				3 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012 AirCraft	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 UAL 8% Contingent Senior Notes	Dec. 31, 2011 UAL 8% Contingent Senior Notes	Dec. 31, 2012 United Air Lines 8% Senior Notes Due 2024	Dec. 31, 2012 UAL 6% Senior Convertible Notes	Dec. 31, 2011 UAL 6% Senior Convertible Notes	Dec. 31, 2010 UAL 6% Senior Convertible Notes	Dec. 31, 2011 8% Notes Indenture	Mar. 31, 2012 Voluntary retirement program	Mar. 31, 2012 Voluntary leave of absence program	Dec. 31, 2012 United Air Lines Inc	Dec. 31, 2011 United Air Lines Inc	Dec. 31, 2010 United Air Lines Inc	Dec. 31, 2009 United Air Lines Inc	Dec. 31, 2012 United Air Lines Inc UAL 8% Contingent Senior Notes	Dec. 31, 2011 United Air Lines Inc UAL 8% Contingent Senior Notes	Dec. 31, 2012 United Air Lines Inc UAL 6% Senior Convertible Notes	Dec. 31, 2011 United Air Lines Inc UAL 6% Senior Convertible Notes	Dec. 31, 2010 United Air Lines Inc UAL 6% Senior Convertible Notes	Dec. 31, 2012 Continental Airlines Inc Successor	Dec. 31, 2011 Continental Airlines Inc Successor	Dec. 31, 2012 United Continental Holdings Inc	Dec. 31, 2012 United Continental Holdings Inc Pilot Disability Plan
Merger, Acquisition, Integration Costs and Other Charges [Line Items]
Debt instrument stated interest rate													8.00%					8.00%
Debt instrument, fair value																		$ 88
Principal amount of senior notes												188	125	400	652			125
Debt instrument convertible effective interest rate												8.00%	8.00%		6.00%	6.00%	6.00%								8.00%	8.00%	6.00%	6.00%	6.00%
Debt instrument maturity year														2024	2031
Debt extinguishment charge									309
Fair value of liabilities extinguished									212
Labor agreement costs	21	454							475												312									163		475	80
Expected cash payment																																55
Severance and benefits			76	49					125										32	17	125
Number of mechanics offering to retire early				400
Number of flight attendants voluntarily on leave				1,800
Number of flight attendants accepted voluntary retirement			1,300
Intangible asset impairment	24			6	4				30	4	29												29							30	4
Aircraft-related charges (gains), net					(2)	(3)	1	(2)																						46
Goodwill impairment credit											64												64
Termination of maintenance service contract					$ 58					$ 58												$ 58		$ 104