Employee Benefit Plans (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended		12 Months Ended
		Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 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		$ 40		$ (25)	$ 152	$ (322)
Amortization of prior service credit	[1]	(1)		(12)	(41)	(35)
Amortization of net actuarial loss	[1]	40		32	139	93
Pension Benefits
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer					148		$ 284
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year					192
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	6	6
Interest cost		8		9	25	27
Expected return on plan assets		0		0	0	0
Recognized net actuarial loss		0		1	1	1
Amortization of prior service credit		(1)		(11)	(16)	(32)
Recognized settlement loss		0		0	0	0
Recognized curtailment gain		0		0	(22)	0
Defined Benefit Plans		9		1	(6)	2
Defined contribution plans	[2]	0		0	0	0
Net Periodic Benefit Cost		9		1	(6)	2
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss	[3]	0		0	(58)	0
Amortization of prior service credit		1		11	16	32
Amortization of net actuarial loss		0		(1)	(1)	(1)
Curtailment gain - recognition of net prior service credit		0		0	22	0
Total Recognized in Other Comprehensive Loss	[4]	1		10	(21)	31
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		10		11	(27)	33
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer					49		70
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year					22
Anticipated total cash contributions to defined benefit and post retirement plans in the current year		71			71
ITO
Components of Net Periodic Benefit Costs:
Defined contribution plans	[2]				4	6
United States | Pension Benefits
Components of Net Periodic Benefit Costs:
Service cost		1		2	3	7
Interest cost		38		39	114	117
Expected return on plan assets		(38)		(41)	(114)	(121)
Recognized net actuarial loss		5		5	18	13
Amortization of prior service credit		0		0	(1)	(1)
Recognized settlement loss		16		13	61	38
Recognized curtailment gain		0		0	0	0
Defined Benefit Plans		22		18	81	53
Defined contribution plans	[2]	15		15	46	45
Net Periodic Benefit Cost		37		33	127	98
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss	[3]	(40)		25	(92)	322
Amortization of prior service credit		0		0	1	1
Amortization of net actuarial loss		(21)		(18)	(79)	(51)
Curtailment gain - recognition of net prior service credit		0		0	0	0
Total Recognized in Other Comprehensive Loss	[4]	(61)		7	(170)	272
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		(24)		40	(43)	370
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer					40		124
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year					140
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		8		9	25	26
Interest cost		53		71	159	207
Expected return on plan assets		(73)		(88)	(220)	(260)
Recognized net actuarial loss		19		13	59	41
Amortization of prior service credit		0		(1)	(2)	(2)
Recognized settlement loss		0		0	0	0
Recognized curtailment gain		0		1	0	1
Defined Benefit Plans		7		5	21	13
Defined contribution plans	[2]	8		13	28	31
Net Periodic Benefit Cost		15		18	49	44
Other changes in plan assets and benefit obligations recognized in Other Comprehensive Loss:
Net actuarial (gain) loss	[3]	0		0	(2)	0
Amortization of prior service credit		0		1	2	2
Amortization of net actuarial loss		(19)		(13)	(59)	(41)
Curtailment gain - recognition of net prior service credit		0		0	0	0
Total Recognized in Other Comprehensive Loss	[4]	(19)		(12)	(59)	(39)
Total Recognized in Net Periodic Benefit Cost and Other Comprehensive Loss		(4)		$ 6	(10)	$ 5
Contributions [Abstract]
Defined Benefit Plan, Contributions by Employer					108		$ 160
Anticipated additional contributions to the defined benefit and post retirement plans in current fiscal year					52
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] mounts represent the pre-tax effect included within Other comprehensive loss. Refer to Note 16 - Other Comprehensive Loss for related tax effects and the after-tax amounts.P

[3] 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] a