Pension Savings And Other Postretirement Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Pension curtailments/settlements	$ 0	$ 0		$ 0	$ (33)
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Defined Contribution Plan, Cost Recognized	30	30		94	85
Postretirement benefit cost (credit)	(5)	(4)		(15)	(11)
United States Pension Plan of US Entity [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	1	1		3	14
Interest cost on projected benefit obligation	61	64		182	192
Expected return on plan assets	(75)	(77)		(225)	(234)
Amortization of prior service cost	0	0		0	1
Amortization of net losses	27	27		81	87
Net periodic pension cost	14	15		41	60
Net curtailments/settlements/termination benefits	0	0		0	32
Total defined benefit pension cost	14	15		41	92
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans			$ 1,167
Foreign Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost- benefits earned during the period	11	8		33	26
Interest cost on projected benefit obligation	28	32		85	100
Expected return on plan assets	(26)	(29)		(79)	(90)
Amortization of prior service cost	0	1		0	1
Amortization of net losses	9	9		28	27
Net periodic pension cost	22	21		67	64
Net curtailments/settlements/termination benefits	0	0		1	(14)
Total defined benefit pension cost	22	$ 21		68	50
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans	$ 15			47
North America [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Pension curtailments/settlements			(33)		(33)
UNITED KINGDOM
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements			(5)
FRANCE
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Pension curtailments/settlements					$ 22
Minimum | Foreign Pension Plan [Member]
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans				50
Maximum | Foreign Pension Plan [Member]
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans				$ 75
Discretionary Contributions [Member]
Pension Savings and Other Postretirement Benefit Plans (Textuals) [Abstract]
Contributions to pension plans			$ 907