Employee Benefits (Details 3) (USD $)	Dec. 31, 2012	Dec. 31, 2011
U.K. and non-U.S.
Amounts recognized in the Consolidated Statements of Financial Position
Prepaid benefit cost (included in other non-current assets)	$ 302,000,000	$ 159,000,000
Accrued benefit liability (included in Pension, other post retirement, and post employment liabilities)	(700,000,000)	(644,000,000)
Accumulated other comprehensive loss	2,500,000,000	2,137,000,000
Net amount recognized	2,102,000,000	1,652,000,000
Amounts recognized in Accumulated other comprehensive loss unrecognized as components of net periodic benefit cost
Net loss	2,472,000,000	2,109,000,000
Prior service cost	28,000,000	28,000,000
Amounts recognized in Accumulated other comprehensive loss unrecognized as components of net periodic benefit cost	2,500,000,000	2,137,000,000
Plans with ABO in excess of the fair value of plan assets
Plans with ABO in excess of the fair value of plan assets, ABO	3,400,000,000	3,000,000,000
Plans with ABO in excess of the fair value of plan assets, fair value of plan assets	2,800,000,000	2,400,000,000
Plans with PBO in excess of the fair value of plan assets
Plans with PBO in excess of the fair value of plan assets, PBO	3,500,000,000	3,100,000,000
Plans with PBO in excess of the fair value of plan assets	2,800,000,000	2,500,000,000
U.S. Pension Plan
Amounts recognized in the Consolidated Statements of Financial Position
Accrued benefit liability (included in Pension, other post retirement, and post employment liabilities)	(1,253,000,000)	(1,332,000,000)
Accumulated other comprehensive loss	1,591,000,000	1,480,000,000
Net amount recognized	338,000,000	148,000,000
Amounts recognized in Accumulated other comprehensive loss unrecognized as components of net periodic benefit cost
Net loss	1,591,000,000	1,480,000,000
Amounts recognized in Accumulated other comprehensive loss unrecognized as components of net periodic benefit cost	1,591,000,000	1,480,000,000
Plans with ABO in excess of the fair value of plan assets
Plans with ABO in excess of the fair value of plan assets, PBO	2,900,000,000	2,700,000,000
Plans with ABO in excess of the fair value of plan assets, ABO	2,900,000,000	2,700,000,000
Plans with ABO in excess of the fair value of plan assets, fair value of plan assets	$ 1,600,000,000	$ 1,300,000,000

The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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