Employee Benefit Plans (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Level 3 [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	$ 153		$ 49
Purchases (Sales)	0		0
Unrealized gains (loss)	(5)		1
Transfers from Level 2 to Level 3	0		98
Fair value of plan assets, ending balance	148		148
Level 3 [Member] \| U.S Property Fund [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	15		14
Purchases (Sales)	(7)		(7)
Unrealized gains (loss)	0		1
Transfers from Level 2 to Level 3	0		0
Fair value of plan assets, ending balance	8		8
Level 3 [Member] \| Global Property Fund [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	0		0
Purchases (Sales)	3		3
Unrealized gains (loss)	0		0
Transfers from Level 2 to Level 3	0		0
Fair value of plan assets, ending balance	3		3
Level 3 [Member] \| Hedge Funds [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	102		0
Purchases (Sales)	4		4
Unrealized gains (loss)	(4)		0
Transfers from Level 2 to Level 3	0		98
Fair value of plan assets, ending balance	102		102
Level 3 [Member] \| Non-U.S. Property Fund [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	20		19
Purchases (Sales)	0		0
Unrealized gains (loss)	(1)		0
Transfers from Level 2 to Level 3	0		0
Fair value of plan assets, ending balance	19		19
Level 3 [Member] \| Non-U.S. Insurance Contracts [Member]
Fair value of plan assets
Fair value of plan assets, beginning balance	16		16
Purchases (Sales)	0		0
Unrealized gains (loss)	0		0
Transfers from Level 2 to Level 3	0		0
Fair value of plan assets, ending balance	16		16
U.S. Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	10	8	28	24
Interest cost	5	5	15	16
Expected return on plan assets	(8)	(7)	(24)	(21)
Amortization of net loss	3	3	7	9
Net Periodic Cost (benefit)	10	9	26	28
Non-U.S. Pension Benefits [Member]
Components of net periodic benefit cost
Service cost	2	2	6	5
Interest cost	8	8	24	20
Expected return on plan assets	(8)	(7)	(24)	(17)
Amortization of net loss	1	1	3	3
Net Periodic Cost (benefit)	3	4	9	11
Other Postretirement Benefits Plan [Member]
Components of net periodic benefit cost
Service cost	2	3	6	7
Interest cost	2	2	6	8
Amortization of prior service cost (benefit)			(2)	1
Net Periodic Cost (benefit)	$ 4	$ 5	$ 10	$ 16

The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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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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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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Purchases, sales, and settlements of plan assets that occurred during the period.

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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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Transfers in and out of Level 3. For example, transfers due to changes in the observability of significant inputs.

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