Long-Term Employee Benefits (Summarized Information on Pension and Other Long-Term Benefits Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at end of year	$ 20,614		$ 19,399
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	(5,675)		(9,780)
Other liabilities (Note 15)	(5,575)		(9,303)
Net amount recognized	(5,675)		(9,780)
Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Employer contributions	207
Funded status of plan	(2,754)		(3,532)
Other liabilities (Note 15)	(2,530)		(3,271)
Net amount recognized	(2,754)		(3,532)
Change In Benefit Obligation [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	29,179		27,083
Service cost	271		277
Interest cost	1,088		1,165
Plan participants' contributions	23		24
Actuarial loss (gain)	(2,104)		2,245
Benefits paid	(1,626)		(1,593)
Amendments	(62)		(22)
Net effects of acquisitions/divestitures	(480)		0
Benefit obligation at end of year	26,289		29,179
Change In Benefit Obligation [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	3,532		4,379
Service cost	29		37
Interest cost	130		174
Plan participants' contributions	33		110
Actuarial loss (gain)	(515)		60
Benefits paid	(240)		(371)
Amendments	(211)	[1]	(857)	[2]
Net effects of acquisitions/divestitures	(4)		0
Benefit obligation at end of year	2,754		3,532
Change In Plan Assets [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at beginning of year	19,399		17,794
Actual gain on plan assets	2,714		2,326
Employer contributions	313		848
Plan participants' contributions	23		24
Benefits paid	(1,626)		(1,593)
Net effects of acquisitions/divestitures	(209)		0
Fair value of plan assets at end of year	20,614		19,399
Change In Plan Assets [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Fair value of plan assets at beginning of year	0		0
Actual gain on plan assets	0		0
Employer contributions	207		261
Plan participants' contributions	33		110
Benefits paid	(240)		(371)
Net effects of acquisitions/divestitures	0		0
Fair value of plan assets at end of year	0		0
U.S. Pension Plans | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	(3,546)		(6,625)
U.S. Pension Plans | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	0		0
Non U.S. plans [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	(686)		(1,443)
Non U.S. plans [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	0		0
All Other Plans [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	(1,443)	[3]	(1,712)	[3]
All Other Plans [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Funded status of plan	(2,754)		(3,532)
Other assets [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other assets	11		5
Other assets [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other assets	0		0
Other accrued liabilities [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other accrued liabilities (Note 13)	(111)		(110)
Other accrued liabilities [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other accrued liabilities (Note 13)	(224)		(257)
Other liabilities [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other liabilities (Note 15)	(5,575)		(9,303)
Other liabilities [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Other liabilities (Note 15)	(2,530)		(3,271)
Liabilities related to assets held for sale [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Liabilities related to assets held for sale	0		(372)
Liabilities related to assets held for sale [Member] | Other Long-Term Employee Benefit Plans [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Liabilities related to assets held for sale	$ 0		$ (4)

[1] Primarily due to amendments in 2013 to the company's U.S. parent company retiree life insurance plan for employees retiring on and after January 1, 2015 and subsidiaries retiree health care plans.

[2] Primarily due to an amendment in 2012 to the company's U.S. parent company retiree medical and dental plans for Medicare eligible pensioners and survivors from the company sponsored group plans to a company-funded Health Reimbursement Arrangement (HRA).

[3] Includes pension plans maintained around the world where funding is not customary.