Pension and Other Postretirement Employee Benefit Plans - Plan Assets Measured At Fair Value (Details 9) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Pension Plans [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Unfunded commitments to purchase limited partnership investments for the plan	$ 1,600,000,000	$ 1,400,000,000
Excluded amount of US receivables for investments sold and dividends and interest receivables	96,000,000	137,000,000
Excluded amount of Non-US receivables for investments sold and dividends and interest receivables		47,000,000
Excluded amount of other liabilities	2,000,000	4,000,000
Defined Benefit Pension Plans [Member] | Fair Value Plan Asset Measurement [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Fair value of investments valued at net asset value	2,700,000,000	4,400,000,000
Defined Benefit Pension Plans [Member] | Level 1 [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Fair value of investments valued at net asset value	100,000,000	400,000,000
Defined Benefit Pension Plans [Member] | Level 2 [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Fair value of investments valued at net asset value	1,900,000,000	2,500,000,000
Defined Benefit Pension Plans [Member] | Level 3 [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Fair value of investments valued at net asset value	700,000,000	1,500,000,000
Defined benefit pension plan, U.S. [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	14,354,000,000	13,012,000,000	10,472,000,000
Pension and OPEB plan assets and liabilities - supplemental information
Excluded amount of payables for investments purchased	102,000,000	306,000,000
Defined benefit pension plan, U.S. [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	14,368,000,000	13,189,000,000
Defined benefit pension plan, U.S. [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	62,000,000	162,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		3,933,000,000
Defined benefit pension plan, U.S. [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	5,449,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,084,000,000	708,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,085,000,000	748,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	737,000,000	479,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	510,000,000	424,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	292,000,000	192,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	344,000,000	211,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	38,000,000	18,000,000
Defined benefit pension plan, U.S. [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,359,000,000	1,153,000,000
Defined benefit pension plan, U.S. [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,312,000,000	2,271,000,000
Defined benefit pension plan, U.S. [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,871,000,000	4,565,000,000
Defined benefit pension plan, U.S. [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,073,000,000	2,044,000,000
Defined benefit pension plan, U.S. [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,969,000,000	1,743,000,000
Defined benefit pension plan, U.S. [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	558,000,000	467,000,000
Defined benefit pension plan, U.S. [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	271,000,000	311,000,000
Defined benefit pension plan, U.S. [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,230,000,000	1,115,000,000
Defined benefit pension plan, U.S. [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	642,000,000	537,000,000
Defined benefit pension plan, U.S. [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	87,000,000	137,000,000
Defined benefit pension plan, U.S. [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	30,000,000	8,000,000
Defined benefit pension plan, U.S. [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,685,000,000	461,000,000
Defined benefit pension plan, U.S. [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	6,000,000	(4,000,000)
Defined benefit pension plan, U.S. [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	6,000,000	(4,000,000)
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	7,083,000,000	4,514,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	62,000,000	162,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		3,823,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	5,427,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,084,000,000	702,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,085,000,000	744,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	737,000,000	425,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	510,000,000	424,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	292,000,000	192,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	344,000,000	211,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	38,000,000	18,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,337,000,000	1,107,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	412,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	343,000,000	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	37,000,000	107,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	3,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,214,000,000	7,000,000
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 1 [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,324,000,000	4,364,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		106,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	18,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	6,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	4,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	54,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	18,000,000	42,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,308,000,000	1,660,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	355,000,000	878,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	355,000,000	878,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,223,000,000	1,114,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	299,000,000	537,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	50,000,000	30,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	30,000,000	5,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	41,000,000	34,000,000
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	6,000,000	(4,000,000)
Defined benefit pension plan, U.S. [Member] | Level 2 [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	6,000,000	(4,000,000)
Defined benefit pension plan, U.S. [Member] | Level 3 [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,961,000,000	4,311,000,000	3,608,000,000	3,278,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,961,000,000	4,311,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		4,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	4,000,000	4,000,000	1,000,000	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	4,000,000	4,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	4,000,000	199,000,000	202,000,000	194,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,516,000,000	3,687,000,000	2,976,000,000	2,696,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	718,000,000	1,166,000,000	1,039,000,000	1,160,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,969,000,000	1,743,000,000	1,367,000,000	1,232,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	558,000,000	467,000,000	306,000,000	304,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	271,000,000	311,000,000	264,000,000	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	7,000,000	1,000,000	2,000,000	1,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	430,000,000	420,000,000	427,000,000	387,000,000
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, U.S. [Member] | Level 3 [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
OPEB plans, Non-U.S. [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	777,000,000
OPEB plans, Non-U.S. [Member] | Level 1 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0
OPEB plans, Non-U.S. [Member] | Level 2 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	777,000,000
Defined benefit pension plan, Non-U.S. [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,532,000,000	3,330,000,000	2,989,000,000
Pension and OPEB plan assets and liabilities - supplemental information
Excluded amount of payables for investments purchased		46,000,000
Defined benefit pension plan, Non-U.S. [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,830,000,000	3,445,000,000
Defined benefit pension plan, Non-U.S. [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	224,000,000	142,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		750,000,000
Defined benefit pension plan, Non-U.S. [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,121,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	103,000,000	130,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	275,000,000	168,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	262,000,000	117,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	223,000,000	133,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	84,000,000	66,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	45,000,000	36,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,000,000	10,000,000
Defined benefit pension plan, Non-U.S. [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	128,000,000	90,000,000
Defined benefit pension plan, Non-U.S. [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	346,000,000	254,000,000
Defined benefit pension plan, Non-U.S. [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	787,000,000	765,000,000
Defined benefit pension plan, Non-U.S. [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		1,237,000,000
Defined benefit pension plan, Non-U.S. [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	73,000,000	100,000,000
Defined benefit pension plan, Non-U.S. [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	302,000,000	109,000,000
Defined benefit pension plan, Non-U.S. [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	200,000,000	88,000,000
Defined benefit pension plan, Non-U.S. [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	298,000,000	(116,000,000)
Defined benefit pension plan, Non-U.S. [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	298,000,000	(116,000,000)
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,418,000,000	1,017,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	221,000,000	142,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		583,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	878,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	86,000,000	115,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	225,000,000	136,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	233,000,000	94,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	209,000,000	125,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	64,000,000	54,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	36,000,000	30,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	10,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	25,000,000	19,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	98,000,000	62,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		0
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	73,000,000	100,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	109,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	148,000,000	21,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	(116,000,000)
Defined benefit pension plan, Non-U.S. [Member] | Level 1 [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	(116,000,000)
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Plan Asset Categories [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	2,412,000,000	2,428,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Cash and cash equivalents [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	3,000,000	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		167,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Total equity securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	243,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Capital equipment [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	17,000,000	15,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Consumer goods [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	50,000,000	32,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Banks and finance companies [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	29,000,000	23,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Business services [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	14,000,000	8,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Energy [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	20,000,000	12,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Materials [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	9,000,000	6,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,000,000	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Equity securities - Other [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	103,000,000	71,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Common/collective trust funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	248,000,000	192,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Total limited partnerships [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Limited partnerships - Hedge funds [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Private equity investments [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Real estate [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Real assets [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Corporate debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	787,000,000	765,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | U.S. federal, state, local and non-U.S. government debt securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets		1,237,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Mortgage-backed securities [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	0	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Derivative receivables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	302,000,000	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Other plan asset category [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	52,000,000	67,000,000
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Total liabilities at fair value [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	298,000,000	0
Defined benefit pension plan, Non-U.S. [Member] | Level 2 [Member] | Derivative payables [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	298,000,000	0
Defined benefit pension plan, Non-U.S. [Member] | Level 3 [Member]
Pension and OPEB plan assets and liabilities - supplemental information
Fair value of plan assets and liabilities	0	0
OPEB Plans [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,757,000,000	1,563,000,000	1,435,000,000
OPEB Plans [Member] | Level 3 [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	1,749,000,000	1,554,000,000	1,427,000,000	1,381,000,000
OPEB Plans [Member] | Level 3 [Member] | Defined Benefit Postretirement Life Insurance [Member]
Pension and OPEB plan assets and liabilities measured at fair value
Fair Value of Plan Assets	$ 1,749,000,000	$ 1,554,000,000	$ 1,427,000,000	$ 1,381,000,000