Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income:
Net actuarial loss(1)	$ (197)		$ 0
Amortization of prior service credit	(12)	[1]	(11)	[1]
Amortization of net actuarial loss	28	[1]	75	[1]
Pension Benefits
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer	37
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year	213
Anticipated total cash contributions to defined benefit and post retirement plans in the current year	250
Retiree Health
Components of Net Periodic Benefit Costs:
Service cost	2		2
Interest cost	9		9
Expected return on plan assets	0		0
Recognized net actuarial loss	0		1
Amortization of prior service credit	(11)		(11)
Recognized settlement loss	0		0
Defined Benefit Plans	0		1
Defined contribution plans	0		0
Net Periodic Benefit Cost	0		1
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income:
Net actuarial loss(1)	0	[2]	0	[2]
Amortization of prior service credit	11		11
Amortization of net actuarial loss	0		(1)
Total Recognized in Other Comprehensive Income	11	[2],[3]	10	[2],[3]
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	11		11
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer	25
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year	46
Anticipated total cash contributions to defined benefit and post retirement plans in the current year	71
U.S. Plans | Pension Benefits
Components of Net Periodic Benefit Costs:
Service cost	2		2
Interest cost	40		37
Expected return on plan assets	(38)		(44)
Recognized net actuarial loss	2		7
Amortization of prior service credit	0		0
Recognized settlement loss	12		48
Defined Benefit Plans	18		50
Defined contribution plans	16		19
Net Periodic Benefit Cost	34		69
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income:
Net actuarial loss(1)	197	[2]	0	[2]
Amortization of prior service credit	0		0
Amortization of net actuarial loss	(14)		(55)
Total Recognized in Other Comprehensive Income	183	[2],[3]	(55)	[2],[3]
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	217		14
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer	6
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year	84
Anticipated total cash contributions to defined benefit and post retirement plans in the current year	90
Non-U.S. Plans | Pension Benefits
Components of Net Periodic Benefit Costs:
Service cost	9		22
Interest cost	69		64
Expected return on plan assets	(87)		(77)
Recognized net actuarial loss	14		19
Amortization of prior service credit	(1)		0
Recognized settlement loss	0		0
Defined Benefit Plans	4		28
Defined contribution plans	11		7
Net Periodic Benefit Cost	15		35
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Income:
Net actuarial loss(1)	0	[2]	0	[2]
Amortization of prior service credit	1		0
Amortization of net actuarial loss	(14)		(19)
Total Recognized in Other Comprehensive Income	(13)	[3]	(19)	[3]
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Income	2		16
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer	31
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year	129
Anticipated total cash contributions to defined benefit and post retirement plans in the current year	$ 160

[1] Reclassified to Total Net Periodic Benefit Cost - refer to Note 14 - Employee Benefit Plans for additional information.

[2] (1)The net actuarial loss for U.S. Plans in the first quarter 2014 is related to the remeasurement of our primary U.S. pension plans as a result of the payment of periodic settlements. The loss in the first quarter 2014 primarily reflects the decrease in discount rates during the period as compared to the discount rates from our annual measurement of the plans at December 31, 2013.

[3] (2)Amounts represent the pre-tax effect included within Other comprehensive income. Refer to Note 16 - Other Comprehensive Income for related tax effects and the after-tax amounts.