Customer Financing (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Customer Financing [Line Items]
Financing receivables individually evaluated for impairment	$ 678	$ 854
Impaired financing receivables	460	485
American Airlines [Member]
Customer Financing [Line Items]
Financing receivables individually evaluated for impairment	$ 583
CCC Credit Rating [Member]
Customer Financing [Line Items]
Percentage of internal credit default rates applied for receivables	45.00%

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Percentage Of Internal Credit Default Rates Applied For Customers

+ References

No definition available.

+ Details

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524

-Subparagraph (h)

+ Details

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- Definition

The recorded investment related to impaired financing receivables.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953550-111524

-Subparagraph (b)

+ Details

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