Pension, Other Postretirement Benefits and Savings Plans (Change in Benefit Obligation and Plan Assets) (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]
Service cost	$ (45)	$ (39)	$ (41)
Interest cost	(243)	(261)	(283)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	4,100
Ending balance	4,800	4,100
Defined Benefit Plan, Funded Status of Plan	(1,181)	(2,656)
Prior service cost (credit)	31	78
Net actuarial loss	2,806	3,385
Gross amount recognized - AOCL	2,837	3,463
Deferred income taxes - AOCL	(125)	(125)
Minority shareholders' equity	(57)	(67)
Net amount recognized	2,655	3,271
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	(39)	(31)	(32)
Interest cost	(131)	(143)	(150)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	2,354
Ending balance	2,455	2,354
Defined Benefit Plan, Funded Status of Plan	(674)	(866)
Prior service cost (credit)	7	12
Net actuarial loss	981	1,162
Gross amount recognized - AOCL	988	1,174
Deferred income taxes - AOCL	(120)	(157)
Minority shareholders' equity	(153)	(174)
Net amount recognized	715	843
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	(6)	(6)	(6)
Interest cost	(19)	(24)	(30)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded Status of Plan	(383)	(468)
Prior service cost (credit)	(199)	(246)
Net actuarial loss	106	170
Gross amount recognized - AOCL	(93)	(76)
Deferred income taxes - AOCL	12	4
Minority shareholders' equity	1	2
Net amount recognized	(80)	(70)
U.S. Other Postretirement Benefit Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded Status of Plan	(206)	(246)
Non-U.S. Other Postretirement Benefit Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded Status of Plan	(177)	(222)
Change in Benefit Obligation | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Beginning balance	(6,756)	(5,975)
Newly adopted plans	0	0
Service cost	(45)	(39)
Interest cost	(243)	(261)
Plan amendments	30	0
Actuarial (loss) gain	605	(863)
Participant Contributions	0	0
Curtailments/Settlements	0	1
Termination benefits	0	0
Foreign currency translation	0	0
Benefit payments	428	381
Ending balance	(5,981)	(6,756)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Participant Contributions	0	0
Benefit payments	(428)	(381)
Change in Benefit Obligation | Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Beginning balance	(3,220)	(2,736)
Newly adopted plans	(3)	(24)
Service cost	(39)	(31)
Interest cost	(131)	(143)
Plan amendments	1	0
Actuarial (loss) gain	89	(383)
Participant Contributions	(2)	(3)
Curtailments/Settlements	13	39
Termination benefits	0	(1)
Foreign currency translation	18	(88)
Benefit payments	145	150
Ending balance	(3,129)	(3,220)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Participant Contributions	2	3
Benefit payments	(145)	(150)
Change in Benefit Obligation | Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Beginning balance	(474)	(582)
Newly adopted plans	0	0
Service cost	(6)	(6)
Interest cost	(19)	(24)
Plan amendments	0	82
Actuarial (loss) gain	50	6
Participant Contributions	(16)	(31)
Curtailments/Settlements	0	0
Termination benefits	0	0
Foreign currency translation	21	2
Benefit payments	56	79
Ending balance	(388)	(474)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Participant Contributions	16	31
Benefit payments	(56)	(79)
Change In Plan Assets | U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant Contributions	0	0
Benefit payments	428	381
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	4,100	3,523
Actual return on plan assets	104	497
Company contributions to plan assets	1,016	454
Cash funding of direct participant payments	8	8
Participant Contributions	0	0
Settlements	0	(1)
Foreign currency translation	0	0
Benefit payments	(428)	(381)
Ending balance	4,800	4,100
Change In Plan Assets | Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant Contributions	(2)	(3)
Benefit payments	145	150
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	2,354	2,091
Actual return on plan assets	140	158
Company contributions to plan assets	111	193
Cash funding of direct participant payments	27	29
Participant Contributions	2	3
Settlements	(13)	(39)
Foreign currency translation	(21)	69
Benefit payments	(145)	(150)
Ending balance	2,455	2,354
Change In Plan Assets | Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Participant Contributions	(16)	(31)
Benefit payments	56	79
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Beginning balance	6	6
Actual return on plan assets	0	0
Company contributions to plan assets	2	2
Cash funding of direct participant payments	38	46
Participant Contributions	16	31
Settlements	0	0
Foreign currency translation	(1)	0
Benefit payments	(56)	(79)
Ending balance	$ 5	$ 6