Pension Plans (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
U.S. [Member]
Defined Benefit Plan Net Periodic Benefit Cost Abstract
Service cost	$ 1	$ 1	$ 5	$ 4
Interest cost	8	8	24	24
Expected return on plan assets	(8)	(7)	(24)	(22)
Amortization of prior service cost	1	1	3	3
Amortization of net loss	3	3	10	9
Loss on curtailment	0	0	0	0
Total pension cost	5	6	18	18
Defined Benefit Pension Contributions Disclosure [Abstract]
Defined Benefit Plan Contributions By Employer			30
Defined Benefit Plan Estimated Future Employer Contributions Remainder Of Fiscal Year	7		7
Foreign [Member]
Defined Benefit Plan Net Periodic Benefit Cost Abstract
Service cost	6	3	16	12
Interest cost	145	129	436	380
Expected return on plan assets	(130)	(108)	(391)	(318)
Amortization of prior service cost	0	0	0	0
Amortization of net loss	6	4	18	11
Loss on curtailment	0	0	4	0
Total pension cost	27	28	83	85
Defined Benefit Pension Contributions Disclosure [Abstract]
Defined Benefit Plan Contributions By Employer			132
Defined Benefit Plan Estimated Future Employer Contributions Remainder Of Fiscal Year	$ 39		$ 39

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The employer's best estimate, as of the balance sheet date, of contributions expected to be paid to the plan during the remainder of the current fiscal year. 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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The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

+ References

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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.

+ References

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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.

+ References

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- Definition

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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- Definition

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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- Definition

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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-Glossary Service Cost (Component of Net Periodic Pension Cost)

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