Pension and Other Postretirement Benefit Plans (Components of Net Periodic Benefit Cost) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Amortization
Curtailment gain	$ (35,000,000)	$ (62,000,000)	$ (92,000,000)
United States Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2,000,000	3,000,000	11,000,000
Interest cost	192,000,000	200,000,000	206,000,000
Expected return on plan assets	(194,000,000)	(190,000,000)	(198,000,000)
Amortization
Actuarial loss	31,000,000	30,000,000	35,000,000
Prior service credit	(3,000,000)	(3,000,000)	0
Special termination benefit			1,000,000
Curtailment gain			7,000,000
Settlement loss (gain)			4,000,000
Net periodic benefit cost	28,000,000	40,000,000	66,000,000
Foreign Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7,000,000	6,000,000	6,000,000
Interest cost	20,000,000	20,000,000	20,000,000
Expected return on plan assets	(10,000,000)	(11,000,000)	(11,000,000)
Amortization
Actuarial loss	4,000,000	2,000,000	3,000,000
Prior service credit	1,000,000	1,000,000	1,000,000
Special termination benefit
Curtailment gain
Settlement loss (gain)	2,000,000	3,000,000	(1,000,000)
Net periodic benefit cost	24,000,000	21,000,000	18,000,000
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	8,000,000	9,000,000	11,000,000
Interest cost	31,000,000	38,000,000	48,000,000
Expected return on plan assets
Amortization
Actuarial loss	1,000,000	1,000,000	1,000,000
Prior service credit	(43,000,000)	(33,000,000)	(32,000,000)
Special termination benefit
Curtailment gain	(35,000,000)	(62,000,000)	(95,000,000)
Settlement loss (gain)
Net periodic benefit cost	$ (38,000,000)	$ (47,000,000)	$ (67,000,000)