Pension and Other Postretirement Benefit Plans (Details) (USD $) In Millions	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
Apr. 02, 2010	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011 Pension Benefits	Oct. 01, 2010 Pension Benefits	Sep. 30, 2011 Pension Benefits	Oct. 01, 2010 Pension Benefits	Sep. 30, 2011 Primary U.S. Plan	Sep. 30, 2011 European Pension Plans	Sep. 30, 2011 Other Benefits	Oct. 01, 2010 Other Benefits	Sep. 30, 2011 Other Benefits	Oct. 01, 2010 Other Benefits
Net periodic pension and other Postretirement benefit cost
Service cost				$ 62	$ 28	$ 186	$ 85			$ 8	$ 5	$ 24	$ 16
Interest cost				97	54	292	162			11	7	34	20
Expected return on plan assets				(125)	(62)	(371)	(185)			(2)	(2)	(6)	(6)
Amortization of prior service cost (credit)				2	1	5	3			(15)	(16)	(46)	(46)
Amortization of net actuarial loss				22	14	64	43			0	1	1	2
Net periodic benefit cost (credit)				58	35	176	108			2	(5)	7	(14)
Curtailment charge				0	0	0	(1)			0	0	0	0
Special termination benefits				0	0	4	1			0	0	2	1
Total cost (credit) recognized in statements of income				58	35	180	108			2	(5)	9	(13)
Contributions to pension plan		874	57					360	369
Changes in Income Tax Reconciliation Deductions Medicare Prescription Drug Benefit Subsidy Due to New Legislation	14
Pension plans, anticipated additional contributions for remainder of current fiscal year		$ 13

The change in the portion of the difference between total income tax expense (benefit) as reported in the Income Statement for the period and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to the subsidy for Medicare prescription drug benefits previously received tax-free before enactment of recent legislation.

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The total amount of net periodic benefit cost for defined benefit plans for the period, excluding gain or loss due to settlements, curtailments or special termination benefits.

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The amount of gains or losses recognized in net periodic benefit cost.

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The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation.

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The increase in the fair value of plan assets from contributions made by the employer.

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If applicable, the cost of providing special or contractual termination benefits recognized during the period on the projected benefit obligation.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.

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An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

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The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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