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Legal Proceedings and Contingencies (Narrative) (Details)
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3 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 26, 2011
USD ($)
|
Jun. 26, 2011
Soothsayer [Member]
USD ($)
|
Jun. 26, 2011
Soothsayer [Member]
Currency, British Pound Sterling [Member]
GBP (£)
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Jun. 24, 2009
Soothsayer [Member]
Currency, British Pound Sterling [Member]
GBP (£)
|
Jun. 26, 2011
N Y Metropolitan Transportation Authority [Member]
USD ($)
|
Apr. 24, 2009
N Y Metropolitan Transportation Authority [Member]
USD ($)
|
Jun. 26, 2011
Environmental Matters [Member]
USD ($)
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Dec. 31, 2010
Environmental Matters [Member]
USD ($)
|
Jun. 26, 2011
Environmental Matters [Member]
Other Assets [Member]
Government [Member]
USD ($)
|
Dec. 31, 2010
Environmental Matters [Member]
Other Assets [Member]
Government [Member]
USD ($)
|
Jun. 26, 2011
Environmental Matters [Member]
Government [Member]
USD ($)
|
Dec. 31, 2010
Environmental Matters [Member]
Government [Member]
USD ($)
|
Jun. 26, 2011
Standby Letters of Credit [Member]
USD ($)
|
Dec. 31, 2010
Standby Letters of Credit [Member]
USD ($)
|
Jun. 26, 2011
United Launch Alliance [Member]
USD ($)
|
Jun. 26, 2011
Other Liabilities [Member]
USD ($)
|
Dec. 31, 2010
Other Liabilities [Member]
USD ($)
|
Dec. 31, 2010
Third Party Guarantees [Member]
USD ($)
|
Jun. 26, 2011
Third Party Guarantees [Member]
USD ($)
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| Contract value | $ 230,000,000 | £ 144,000,000 | $ 323,000,000 | ||||||||||||||||
| Contract payments received to date | 62,000,000 | 39,000,000 | 241,000,000 | ||||||||||||||||
| Damages sought by DoJ including interest but excluding potential penalties | 80,000,000 | ||||||||||||||||||
| Liquidated damages, demanded on amount paid under contract | 3,000,000 | 2,000,000 | |||||||||||||||||
| Liabilities recorded relative to environmental matters | 921,000,000 | 935,000,000 | 807,000,000 | 807,000,000 | |||||||||||||||
| Environmental costs eligible for future recovery | 699,000,000 | 699,000,000 | 797,000,000 | 810,000,000 | |||||||||||||||
| Time period environmental costs and recovery of environmental costs are projected over | 20 | ||||||||||||||||||
| Percentage of expenditures for certain remediation activities | 50.00% | ||||||||||||||||||
| Outstanding letters of credit, surety bonds and third-party guarantees | 4,100,000,000 | 4,200,000,000 | |||||||||||||||||
| Third-party guarantees outstanding | 1,000,000,000 | 1,000,000,000 | |||||||||||||||||
| Percentage of total guarantees that relate to guarantees of contractual performance of joint ventures | 90.00% | 85.00% | |||||||||||||||||
| Ownership interest in affiliated entity | 50.00% | ||||||||||||||||||
| Dividend distributions received | 305,000,000 | ||||||||||||||||||
| Revolving line of credit | $ 400,000,000 | ||||||||||||||||||