Arrangements With Off-Balance Sheet Risk (Quantitative Data Regarding Our Third-Party Guarantees) (Details) (USD $) In Millions	9 Months Ended	12 Months Ended
Sep. 30, 2011	Dec. 31, 2010
Contributed Delta Program Launch Inventory [Member]
Maximum Potential Payments	$ 215	$ 187
Indemnification Agreement [Member]
Maximum Potential Payments	261	261
Carrying Amount of Liabilities	7	7
Other Delta Contracts [Member]
Maximum Potential Payments	142	83
Carrying Amount of Liabilities	13	16
Other Indemnifications [Member]
Maximum Potential Payments	224	232
Carrying Amount of Liabilities	73	82
Credit Guarantees [Member]
Maximum Potential Payments	18	71
Estimated Proceeds from Collateral/Recourse	12	63
Carrying Amount of Liabilities	2	6
Residual Value Guarantees [Member]
Maximum Potential Payments	29	29
Estimated Proceeds from Collateral/Recourse	22	21
Carrying Amount of Liabilities	6	6
Contingent Repurchase Commitments [Member]
Maximum Potential Payments	3,314	3,782
Estimated Proceeds from Collateral/Recourse	3,314	3,759
Carrying Amount of Liabilities	$ 7	$ 7

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 45

-Paragraph 13

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

Name:	us-gaap_GuaranteeObligationsCurrentCarryingValue
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant