Employee Benefit (Details) (USD $) In Millions	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
Mar. 31, 2011 Pension Plans, Defined Benefit [Member]	Mar. 31, 2010 Pension Plans, Defined Benefit [Member]	Jun. 30, 2011 Pension Plans, Defined Benefit [Member]	Jun. 30, 2010 Pension Plans, Defined Benefit [Member]	Jun. 30, 2011 U.S. [Member]	Jun. 30, 2010 U.S. [Member]	Jun. 30, 2011 U.S. [Member]	Jun. 30, 2010 U.S. [Member]	Jun. 30, 2011 International [Member]	Jun. 30, 2010 International [Member]	Jun. 30, 2011 International [Member]	Jun. 30, 2010 International [Member]	Jun. 30, 2011 Other Benefits [Member]	Jun. 30, 2010 Other Benefits [Member]	Jun. 30, 2011 Other Benefits [Member]	Jun. 30, 2010 Other Benefits [Member]
Net Periodic Benefit Cost
Service cost					$ 93	$ 84	$ 187	$ 168	$ 43	$ 40	$ 88	$ 76	$ 16	$ 9	$ 30	$ 19
Interest cost					115	121	231	243	80	79	162	152	45	43	90	86
Expected return on plan assets					(153)	(134)	(306)	(269)	(66)	(62)	(137)	(120)
Amortization of prior service credits					(2)	(2)	(4)	(4)	6	6	12	11	(18)	(19)	(36)	(37)
Amortization of actuarial losses					78	79	155	159	30	26	56	50	15	7	31	13
Settlement losses					53	55	144	110
Curtailment losses									9		36
Net Periodic Pension Benefit Costs	$ 286	$ 292	$ 624	$ 576	$ 184	$ 203	$ 407	$ 407	$ 102	$ 89	$ 217	$ 169	$ 58	$ 40	$ 115	$ 81

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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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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+ Details

- 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.

+ References+ Details

- Definition

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.

+ References

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+ Details

- Definition

The amount of net gain (loss) recognized in net periodic benefit cost as a result of 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.

+ References

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+ Details

- 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.

+ References

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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Service Cost (Component of Net Periodic Pension Cost)
-URI http://asc.fasb.org/extlink&oid=6525008

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+ Details

- Definition

The net gain (loss) previously recognized in other comprehensive income that is a reclassification adjustment of other comprehensive income as a result of being recognized as a component of net periodic benefit cost for the period.

+ References

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-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
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+ Details