Decrease in diluted earnings per share due to the write-off of deferred tax assets associated with retiree prescription drug expenses. Previously, a portion of such expenses were tax deductible. However, in March 2010, the President signed into law the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010, which eliminated the tax deduction available to the extent that those expenses are reimbursed under Medicare Part D beginning January 1, 2013.

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- Definition

Income Tax Expense Decrease Resulting From Resolution Of Previous Tax Matters

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Income tax expense per share decreases resulting from resolution of previous tax matters.

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Increase in income tax expense due to the write-off of deferred tax assets associated with retiree prescription drug expenses. Previously, a portion of such expenses were tax deductible. However, in March 2010, the President signed into law the Patient Protection and Affordable Care Act and the Health Care and Education Reconciliation Act of 2010, which eliminated the tax deduction available to the extent that those expenses are reimbursed under Medicare Part D beginning January 1, 2013.

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Percentage of total lump-sum special payments made in the period

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Number Of Days From Separation For Effecting Cash Special Payment

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Reduction in net earnings due to severance charges.

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Reduction in net earnings per share due to severance charges.

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The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are voluntarily and involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits.

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Charge related to a Voluntary Executive Separation Program

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Certain Matters Included in Earnings (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended
	Jun. 26, 2011	Jun. 26, 2011	Jun. 27, 2010	Jun. 26, 2011 Scenario, Forecast [Member]	Jun. 26, 2011 Scenario, Forecast [Member]	Jun. 26, 2011 Aeronautics [Member]	Jun. 26, 2011 Space Systems [Member]	Jun. 26, 2011 Voluntary Executive Separation Program [Member]	Mar. 27, 2011 Voluntary Executive Separation Program [Member]	Sep. 26, 2010 Voluntary Executive Separation Program [Member]
Severance charges	$ 97	$ 97				$ 49	$ 48
Reduction in net earnings due to severance charges	63
Reduction in net earnings per share due to severance charges	$ 0.18
Charge related to the Voluntary Executive Separation Plan										178
Maximum number of days within which cash special payment has to be made									90
Lump-sum Special Payments made Percentage								90.00%
Medicare Part D law change			96
Decrease in diluted earnings per share			$ 0.25
Reduction in income tax expense as a result of resolution of previous tax matters				$ 89
Reduction in income tax expense per share as a result of resolution of previous tax matters				$ 0.26	$ 0.25