Restructuring Related Activities (Details in Tables) (USD $) In Millions, unless otherwise specified	12 Months Ended			72 Months Ended	41 Months Ended	15 Months Ended	59 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2011
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	$ (112)			$ (628)
Restructuring Charges Incurred to Date				526
Restructuring Charges	69	101	136
Restructuring Related Expenses	48	23	24
Restructuring and Related Cost, Incurred Cost	117	124	160
Restructuring-related Costs Incurred to Date				191
2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(19)				(287)
Restructuring Charges Incurred to Date					250
Restructuring and Related Cost, Incurred Cost		100	149
Restructuring-related Costs Incurred to Date					39
Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	126			126	126	126	126
Payments for Restructuring	0			(103)
Restructuring Charges Incurred to Date				30
Restructuring and Related Cost, Incurred Cost		(6)	8
Restructuring-related Costs Incurred to Date				96
2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(93)
Restructuring Charges Incurred to Date						94
Restructuring and Related Cost, Incurred Cost		30
Restructuring-related Costs Incurred to Date						48
2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	160			160	160	160	160
Payments for Restructuring	0						(145)
Restructuring Charges Incurred to Date							152
Restructuring and Related Cost, Incurred Cost		0	3
Restructuring-related Costs Incurred to Date							8
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	43	41	48	43	43	43	43	57
Payments for Restructuring	(40)	(62)	(88)	(284)
Other Restructuring Costs		5
Restructuring Charges Incurred to Date				327
Restructuring Charges	42	60	79
Restructuring Related Expenses	0	0	0
Restructuring and Related Cost, Incurred Cost	42	60	79
Employee Severance [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	4	12	36	4	4	4	4	18
Payments for Restructuring	(9)	(61)	(60)		(133)
Other Restructuring Costs		0
Restructuring Charges Incurred to Date					138
Restructuring Charges	1	37	78
Restructuring and Related Cost, Incurred Cost	1	37	78
Employee Severance [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	9	0	0	0	0	33
Payments for Restructuring	0	(1)	(24)	(30)
Other Restructuring Costs		2
Restructuring Charges Incurred to Date				30
Restructuring Charges	0	(6)	0
Restructuring and Related Cost, Incurred Cost	0	(6)	0
Employee Severance [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	39	29	0	39	39	39	39	0
Payments for Restructuring	(31)	0	0			(31)
Other Restructuring Costs		0
Restructuring Charges Incurred to Date						69
Restructuring Charges	41	29	0
Restructuring and Related Cost, Incurred Cost	41	29
Employee Severance [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	3	0	0	0	0	6
Payments for Restructuring	0	0	(4)				(90)
Other Restructuring Costs		3
Restructuring Charges Incurred to Date							90
Restructuring Charges	0	0	1
Restructuring and Related Cost, Incurred Cost	0	0	1
Impairment of an asset in value [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Incurred to Date				10
Restructuring Charges		(15)	14
Restructuring Related Expenses		0	0
Restructuring and Related Cost, Incurred Cost		(15)	14
Impairment of an asset in value [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Incurred to Date					(1)
Restructuring and Related Cost, Incurred Cost		(15)	14
Impairment of an asset in value [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Incurred to Date				0
Restructuring and Related Cost, Incurred Cost		0	0
Impairment of an asset in value [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Incurred to Date						0
Restructuring and Related Cost, Incurred Cost		0
Impairment of an asset in value [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges Incurred to Date							11
Restructuring and Related Cost, Incurred Cost		0	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	6	8		6	6	6	6
Payments for Restructuring	(48)			(247)
Restructuring Charges Incurred to Date				189
Restructuring Charges	27	56	43
Restructuring Related Expenses	19	20	14
Restructuring and Related Cost, Incurred Cost	46	76	57
Other Restructuring [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(10)				(154)
Restructuring Charges Incurred to Date					113
Restructuring and Related Cost, Incurred Cost	3	75	55
Other Restructuring [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	0			0
Restructuring Charges Incurred to Date				0
Restructuring and Related Cost, Incurred Cost	0	0	0
Other Restructuring [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(38)					(38)
Restructuring Charges Incurred to Date						25
Restructuring and Related Cost, Incurred Cost	43	1
Other Restructuring [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	0						(55)
Restructuring Charges Incurred to Date							51
Restructuring and Related Cost, Incurred Cost	0	0	2
Restructuring Related To Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring-related Costs Incurred to Date				61
Restructuring Related To Plan [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	4
Restructuring-related Costs Incurred to Date					34
Restructuring Related To Plan [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0
Restructuring-related Costs Incurred to Date				0
Restructuring Related To Plan [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	113
Restructuring-related Costs Incurred to Date						19
Restructuring Related To Plan [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0
Restructuring-related Costs Incurred to Date							8
Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0	0	0
Restructuring Related Expenses	5	3	2
Restructuring and Related Cost, Incurred Cost	5	3	2
Restructuring-related Costs Incurred to Date				32
Accelerated Depreciation [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	3	2
Restructuring-related Costs Incurred to Date					5
Accelerated Depreciation [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	0	0
Restructuring-related Costs Incurred to Date				22
Accelerated Depreciation [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	5	0
Restructuring-related Costs Incurred to Date						5
Accelerated Depreciation [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	0	0	0
Restructuring-related Costs Incurred to Date							0
Transfer costs [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(24)			(97)
Restructuring Charges	0	0	0
Restructuring Related Expenses	24	0	8
Restructuring and Related Cost, Incurred Cost	24	0	8
Restructuring-related Costs Incurred to Date				98
Transfer costs [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	0				0
Restructuring and Related Cost, Incurred Cost	0	0	0
Restructuring-related Costs Incurred to Date					0
Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	0			(73)
Restructuring and Related Cost, Incurred Cost	0	0	8
Restructuring-related Costs Incurred to Date				74
Transfer costs [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	(24)					(24)
Restructuring and Related Cost, Incurred Cost	24	0
Restructuring-related Costs Incurred to Date						24
Transfer costs [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	0						0
Restructuring and Related Cost, Incurred Cost	0	0	0
Restructuring-related Costs Incurred to Date							0
Restructuring Plan [Member] | Employee Severance [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	30			30	30	30	30
Restructuring Plan [Member] | Employee Severance [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	90			90	90	90	90
Restructuring Plan [Member] | Impairment of an asset in value [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	11			11	11	11	11
Restructuring Plan [Member] | Other Restructuring [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	112			112	112	112	112
Restructuring Plan [Member] | Other Restructuring [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	51			51	51	51	51
Restructuring Related To Plan [Member] | Other Restructuring [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	39			39	39	39	39
Restructuring Related To Plan [Member] | Other Restructuring [Member] | 2010 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	8			8	8	8	8
Restructuring Related To Plan [Member] | Accelerated Depreciation [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	22			22	22	22	22
Restructuring Related To Plan [Member] | Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	74			74	74	74	74
Cost of products sold [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	24		8
Cost of products sold [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	0		0
Cost of products sold [Member] | Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	0
Cost of products sold [Member] | Impairment of an asset in value [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses			0
Cost of products sold [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	0		0
Cost of products sold [Member] | Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses			0
Cost of products sold [Member] | Transfer costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	24		8
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	24	23	16
Selling, General and Administrative Expenses [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	0	0	0
Selling, General and Administrative Expenses [Member] | Impairment of an asset in value [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses		0	0
Selling, General and Administrative Expenses [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	19	20	14
Selling, General and Administrative Expenses [Member] | Accelerated Depreciation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	5	3	2
Selling, General and Administrative Expenses [Member] | Transfer costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Related Expenses	0	0	0
Minimum [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	289			289	289	289	289
Minimum [Member] | Plant Network Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	126			126	126	126	126
Minimum [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	250			250	250	250	250
Minimum [Member] | Restructuring Plan [Member] | Employee Severance [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	138			138	138	138	138
Minimum [Member] | Restructuring Plan [Member] | Employee Severance [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	115			115	115	115	115
Minimum [Member] | Restructuring Plan [Member] | Other Restructuring [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	25			25	25	25	25
Minimum [Member] | Restructuring Related To Plan [Member] | Other Restructuring [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	110			110	110	110	110
Maximum [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	292			292	292	292	292
Maximum [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	300			300	300	300	300
Maximum [Member] | Restructuring Plan [Member] | Employee Severance [Member] | 2011 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	141			141	141	141	141
Maximum [Member] | Restructuring Plan [Member] | Employee Severance [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	135			135	135	135	135
Maximum [Member] | Restructuring Plan [Member] | Other Restructuring [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	35			35	35	35	35
Maximum [Member] | Restructuring Related To Plan [Member] | Other Restructuring [Member] | 2014 Restructuring plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 130			$ 130	$ 130	$ 130	$ 130