Pension, Other Postretirement Benefits and Savings Plans (Weighted Assumptions) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate:	4.51%	3.71%
Discount rate: (benefit costs)	3.77%	4.52%	5.20%
Expected long term return on plan assets:	7.16%	8.50%	8.50%
Accumulated benefit obligation	$ 5,966	$ 6,738
Total recognized in other comprehensive (income) loss before tax and minority	(626)	462	563
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate:	4.36%	4.12%
Rate of compensation increase:	3.11%	3.23%
Discount rate: (benefit costs)	4.12%	5.07%	5.54%
Expected long term return on plan assets:	5.01%	5.56%	6.29%
Rate of compensation increase (benefit cost):	3.23%	3.36%	3.43%
Accumulated benefit obligation	3,008	3,094
Total recognized in other comprehensive (income) loss before tax and minority	(186)	322	1
U.S. Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate:	4.06%	3.30%
Discount rate: (benefit costs)	3.30%	3.98%	4.62%
Non-U.S. Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate:	6.62%	5.64%
Rate of compensation increase:	4.32%	4.12%
Discount rate: (benefit costs)	5.64%	5.91%	6.52%
Rate of compensation increase (benefit cost):	4.12%	3.71%	3.99%
Plans Not Fully Funded | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	4,101	6,756
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	4,086	6,738
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	2,869	4,100
Plans Not Fully Funded | Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	2,106	2,668
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	2,004	2,564
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	1,375	1,770
Certain Unfunded Non US Subsidiaries
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated benefit obligation	303	318
Defined Benefit Plan, Benefit Obligation	(352)	(366)
Total recognized in other comprehensive (income) loss before tax and minority	$ 73	$ 99