Retirement Benefits (Net Periodic Pension Costs) (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010
Defined Benefit Plan Disclosure
Net curtailment gain recorded in other charges	$ 9
U.S. Regular Pension Plan [Member]
Defined Benefit Plan Disclosure
Interest cost	84	85	254	256
Expected return on plan assets	(97)	(94)	(291)	(283)
Unrecognized net loss	47	37	140	111
Net periodic pension cost	34	28	103	84
Contributions			170
Officers' And MSPP [Member]
Defined Benefit Plan Disclosure
Interest cost	1	1	2	2
Unrecognized net loss	1		3	1
Settlement/curtailment loss (gain)	4	1	8	3
Net periodic pension cost	6	2	13	6
Contributions			6
Non-U.S. Plans [Member]
Defined Benefit Plan Disclosure
Service cost	4	5	18	18
Interest cost	19	17	68	66
Expected return on plan assets	(21)	(16)	(75)	(64)
Unrecognized net loss	4	4	12	14
Unrecognized prior service cost	(2)	(1)	(10)	(3)
Settlement/curtailment loss (gain)			(9)
Net periodic pension cost	4	9	4	31
Contributions			$ 30

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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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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-Glossary Plan Curtailment

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The aggregate amount of net gain (loss) recognized in net periodic benefit cost due to settlements and curtailments. Curtailments result from 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. Settlements result from an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include (a) making lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and (b) purchasing nonparticipating annuity contracts to cover vested benefits.

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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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