Employee Benefit Plans (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Components of Net Periodic Benefit Costs:
Recognized curtailment gain		$ (22)
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss(1)		200	$ (100)	$ 112	$ (297)
Amortization of prior service credit	[1]	(32)	(11)	(40)	(23)
Amortization of net actuarial loss	[1]	46	33	99	61
Pension Benefits
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer				98		$ 284
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year				242
Anticipated total cash contributions to defined benefit and post retirement plans in the current year		340		340
Retiree Health
Components of Net Periodic Benefit Costs:
Service cost		2	2	4	4
Interest cost		8	9	17	18
Expected return on plan assets		0	0	0	0
Recognized net actuarial loss		1	0	1	0
Amortization of prior service credit		(8)	(10)	(15)	(21)
Recognized settlement loss		0	0	0	0
Recognized curtailment gain		(22)	0	(22)	0
Defined Benefit Plans		(19)	1	(15)	1
Defined contribution plans (3)	[2]	0	0	0	0
Net Periodic Benefit Cost		(19)	1	(15)	1
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss(1)	[3]	(58)	0	(58)	0
Amortization of prior service credit		8	10	15	21
Amortization of net actuarial loss		(1)	0	(1)	0
Curtailment gain - recognition of net prior service credit		22	0	22	0
Total Recognized in Other Comprehensive Loss(2)	[4]	(29)	10	(22)	21
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		(48)	11	(37)	22
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer				29		70
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year				42
Anticipated total cash contributions to defined benefit and post retirement plans in the current year		71		71
ITO [Member]
Components of Net Periodic Benefit Costs:
Defined contribution plans (3)	[2]			4	4
United States | Pension Benefits
Components of Net Periodic Benefit Costs:
Service cost		1	3	2	5
Interest cost		38	38	76	78
Expected return on plan assets		(38)	(42)	(76)	(80)
Recognized net actuarial loss		6	6	13	8
Amortization of prior service credit		0	(1)	(1)	(1)
Recognized settlement loss		18	13	45	25
Recognized curtailment gain		0	0	0	0
Defined Benefit Plans		25	17	59	35
Defined contribution plans (3)	[2]	15	15	31	30
Net Periodic Benefit Cost		40	32	90	65
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss(1)	[3]	(140)	100	(52)	297
Amortization of prior service credit		0	1	1	1
Amortization of net actuarial loss		(24)	(19)	(58)	(33)
Curtailment gain - recognition of net prior service credit		0	0	0	0
Total Recognized in Other Comprehensive Loss(2)	[4]	(164)	82	(109)	265
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		(124)	114	(19)	330
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer				13		124
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year				167
Anticipated total cash contributions to defined benefit and post retirement plans in the current year		180		180
Non-U.S. Plans | Pension Benefits
Components of Net Periodic Benefit Costs:
Service cost		9	8	17	17
Interest cost		53	67	106	136
Expected return on plan assets		(74)	(85)	(147)	(172)
Recognized net actuarial loss		21	14	40	28
Amortization of prior service credit		(2)	0	(2)	(1)
Recognized settlement loss		0	0	0	0
Recognized curtailment gain		0	0	0	0
Defined Benefit Plans		7	4	14	8
Defined contribution plans (3)	[2]	11	8	20	18
Net Periodic Benefit Cost		18	12	34	26
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss(1)	[3]	(2)	0	(2)	0
Amortization of prior service credit		2	0	2	1
Amortization of net actuarial loss		(21)	(14)	(40)	(28)
Curtailment gain - recognition of net prior service credit		0	0	0	0
Total Recognized in Other Comprehensive Loss(2)	[4]	(21)	(14)	(40)	(27)
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		(3)	$ (2)	(6)	$ (1)
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer				85		$ 160
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year				75
Anticipated total cash contributions to defined benefit and post retirement plans in the current year		$ 160		$ 160

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

[2] The six months ended June 30, 2015 and 2014, exclude defined contribution expense of $4 and $4, respectively, related to our ITO business, which was reported as a discontinued operation up to its sale on June 30, 2015. Refer to Note 5 - Divestitures for additional information regarding this sale.

[3] The net actuarial (gain) loss for U.S. Plans primarily reflect; i) the remeasurement of our primary U.S. pension plans as a result of the payment of periodic settlements; and ii) adjustments for the actual valuation results based on January 1st plan census data.

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