Pension and Postretirement Benefit Plans (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2009	Dec. 31, 2011	Dec. 31, 2010
United States Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Amount of company's common stock contributed by company	$ 600
Total, before other items to reconcile		12,606	11,723
Other items to reconcile to fair value of plan assets		(504)	(148)
Fair value of plan assets	10,493	12,102	11,575
United States Qualified and Non-qualified Pension Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile		3,527	3,221
United States Qualified and Non-qualified Pension Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile		5,876	5,043
United States Qualified and Non-qualified Pension Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile		3,203	3,459
Fair value of plan assets	3,115	3,203	3,459
United States Qualified and Non-qualified Pension Benefits | Equities
Benefit Plan Information
Fair value of plan assets		3,339	3,882
United States Qualified and Non-qualified Pension Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets		2,281	2,434
United States Qualified and Non-qualified Pension Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets		616	942
United States Qualified and Non-qualified Pension Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets	4	442	506
United States Qualified and Non-qualified Pension Benefits | U.S. equities
Benefit Plan Information
Fair value of plan assets		1,205	1,202
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets		1,186	1,190
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets		14	5
United States Qualified and Non-qualified Pension Benefits | U.S. equities | Level 3
Benefit Plan Information
Fair value of plan assets		5	7
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities
Benefit Plan Information
Fair value of plan assets		1,096	1,244
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets		1,095	1,244
United States Qualified and Non-qualified Pension Benefits | Non-U.S. equities | Level 2
Benefit Plan Information
Fair value of plan assets		1
United States Qualified and Non-qualified Pension Benefits | Derivatives
Benefit Plan Information
Fair value of plan assets		(3)
United States Qualified and Non-qualified Pension Benefits | Derivatives | Level 2
Benefit Plan Information
Fair value of plan assets		(3)
United States Qualified and Non-qualified Pension Benefits | EAFE index funds
Benefit Plan Information
Fair value of plan assets		476	684
United States Qualified and Non-qualified Pension Benefits | EAFE index funds | Level 2
Benefit Plan Information
Fair value of plan assets		476	684
United States Qualified and Non-qualified Pension Benefits | Index funds
Benefit Plan Information
Fair value of plan assets		129	253
United States Qualified and Non-qualified Pension Benefits | Index funds | Level 2
Benefit Plan Information
Fair value of plan assets		128	253
United States Qualified and Non-qualified Pension Benefits | Index funds | Level 3
Benefit Plan Information
Fair value of plan assets		1
United States Qualified and Non-qualified Pension Benefits | Long/short equity
Benefit Plan Information
Fair value of plan assets		436	499
United States Qualified and Non-qualified Pension Benefits | Long/short equity | Level 3
Benefit Plan Information
Fair value of plan assets		436	499
United States Qualified and Non-qualified Pension Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets		4,014	2,904
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets		950	748
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets		2,990	2,012
United States Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	185	74	144
United States Qualified and Non-qualified Pension Benefits | U.S. government agency securities
Benefit Plan Information
Fair value of plan assets		1,645	1,035
United States Qualified and Non-qualified Pension Benefits | U.S. government agency securities | Level 1
Benefit Plan Information
Fair value of plan assets		776	562
United States Qualified and Non-qualified Pension Benefits | U.S. government agency securities | Level 2
Benefit Plan Information
Fair value of plan assets		869	473
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities
Benefit Plan Information
Fair value of plan assets		9	28
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 1
Benefit Plan Information
Fair value of plan assets		4	20
United States Qualified and Non-qualified Pension Benefits | Preferred and convertible securities | Level 2
Benefit Plan Information
Fair value of plan assets		5	8
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets		1,222	1,042
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets		168	168
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets		1,049	874
United States Qualified and Non-qualified Pension Benefits | U.S. corporate bonds | Level 3
Benefit Plan Information
Fair value of plan assets		5
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets		244	205
United States Qualified and Non-qualified Pension Benefits | Non-U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets		244	205
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities
Benefit Plan Information
Fair value of plan assets		314	289
United States Qualified and Non-qualified Pension Benefits | Non-U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets		314	289
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities:
Benefit Plan Information
Fair value of plan assets		23	16
United States Qualified and Non-qualified Pension Benefits | Asset-backed securities: | Level 2
Benefit Plan Information
Fair value of plan assets		23	16
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations
Benefit Plan Information
Fair value of plan assets		137	31
United States Qualified and Non-qualified Pension Benefits | Collateralized mortgage obligations | Level 2
Benefit Plan Information
Fair value of plan assets		137	31
United States Qualified and Non-qualified Pension Benefits | Other - fixed income
Benefit Plan Information
Fair value of plan assets		24	34
United States Qualified and Non-qualified Pension Benefits | Other - fixed income | Level 2
Benefit Plan Information
Fair value of plan assets		24	34
United States Qualified and Non-qualified Pension Benefits | Private placements
Benefit Plan Information
Fair value of plan assets		194	279
United States Qualified and Non-qualified Pension Benefits | Private placements | Level 2
Benefit Plan Information
Fair value of plan assets		125	135
United States Qualified and Non-qualified Pension Benefits | Private placements | Level 3
Benefit Plan Information
Fair value of plan assets		69	144
United States Qualified and Non-qualified Pension Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets		202	(55)
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 1
Benefit Plan Information
Fair value of plan assets		2	(2)
United States Qualified and Non-qualified Pension Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets		200	(53)
United States Qualified and Non-qualified Pension Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets		2,063	2,079
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 1
Benefit Plan Information
Fair value of plan assets		1	4
United States Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	1,961	2,062	2,075
United States Qualified and Non-qualified Pension Benefits | Buyouts
Benefit Plan Information
Fair value of plan assets		618	613
United States Qualified and Non-qualified Pension Benefits | Buyouts | Level 3
Benefit Plan Information
Fair value of plan assets		618	613
United States Qualified and Non-qualified Pension Benefits | Distressed debt
Benefit Plan Information
Fair value of plan assets		333	376
United States Qualified and Non-qualified Pension Benefits | Distressed debt | Level 3
Benefit Plan Information
Fair value of plan assets		333	376
United States Qualified and Non-qualified Pension Benefits | Growth equity
Benefit Plan Information
Fair value of plan assets		28	23
United States Qualified and Non-qualified Pension Benefits | Growth equity | Level 1
Benefit Plan Information
Fair value of plan assets		1	4
United States Qualified and Non-qualified Pension Benefits | Growth equity | Level 3
Benefit Plan Information
Fair value of plan assets		27	19
United States Qualified and Non-qualified Pension Benefits | Mezzanine
Benefit Plan Information
Fair value of plan assets		90	93
United States Qualified and Non-qualified Pension Benefits | Mezzanine | Level 3
Benefit Plan Information
Fair value of plan assets		90	93
United States Qualified and Non-qualified Pension Benefits | Real estate
Benefit Plan Information
Fair value of plan assets		148	159
United States Qualified and Non-qualified Pension Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets		148	159
United States Qualified and Non-qualified Pension Benefits | Secondary
Benefit Plan Information
Fair value of plan assets		181	165
United States Qualified and Non-qualified Pension Benefits | Secondary | Level 3
Benefit Plan Information
Fair value of plan assets		181	165
United States Qualified and Non-qualified Pension Benefits | Other - private equity
Benefit Plan Information
Fair value of plan assets			67
United States Qualified and Non-qualified Pension Benefits | Other - private equity | Level 3
Benefit Plan Information
Fair value of plan assets			67
United States Qualified and Non-qualified Pension Benefits | Venture capital
Benefit Plan Information
Fair value of plan assets		665	583
United States Qualified and Non-qualified Pension Benefits | Venture capital | Level 3
Benefit Plan Information
Fair value of plan assets		665	583
United States Qualified and Non-qualified Pension Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets		1,755	1,765
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets		1,235	1,142
United States Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	728	520	623
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds
Benefit Plan Information
Fair value of plan assets		1,323	1,201
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds | Level 2
Benefit Plan Information
Fair value of plan assets		1,235	1,142
United States Qualified and Non-qualified Pension Benefits | Hedge funds and hedge fund of funds | Level 3
Benefit Plan Information
Fair value of plan assets		88	59
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds
Benefit Plan Information
Fair value of plan assets		432	564
United States Qualified and Non-qualified Pension Benefits | Bank loan and other fixed income funds | Level 3
Benefit Plan Information
Fair value of plan assets		432	564
United States Qualified and Non-qualified Pension Benefits | Commodities
Benefit Plan Information
Fair value of plan assets		540	449
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 2
Benefit Plan Information
Fair value of plan assets		435	338
United States Qualified and Non-qualified Pension Benefits | Commodities | Level 3
Benefit Plan Information
Fair value of plan assets	237	105	111
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets		895	644
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets		295	35
United States Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets		600	609
International Qualified and Non-qualified Pension Benefits
Benefit Plan Information
Total, before other items to reconcile		4,668	4,420
Other items to reconcile to fair value of plan assets		(25)	(65)
Fair value of plan assets	3,897	4,643	4,355
International Qualified and Non-qualified Pension Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile		1,505	1,835
International Qualified and Non-qualified Pension Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile		2,682	2,039
International Qualified and Non-qualified Pension Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile		481	546
Fair value of plan assets	470	481	546
International Qualified and Non-qualified Pension Benefits | Equities
Benefit Plan Information
Fair value of plan assets		1,676	1,774
International Qualified and Non-qualified Pension Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets		1,002	1,218
International Qualified and Non-qualified Pension Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets		669	458
International Qualified and Non-qualified Pension Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets	14	5	98
International Qualified and Non-qualified Pension Benefits | Growth equities
Benefit Plan Information
Fair value of plan assets		515	371
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 1
Benefit Plan Information
Fair value of plan assets		374	300
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 2
Benefit Plan Information
Fair value of plan assets		141	70
International Qualified and Non-qualified Pension Benefits | Growth equities | Level 3
Benefit Plan Information
Fair value of plan assets			1
International Qualified and Non-qualified Pension Benefits | Value equities
Benefit Plan Information
Fair value of plan assets		499	396
International Qualified and Non-qualified Pension Benefits | Value equities | Level 1
Benefit Plan Information
Fair value of plan assets		401	369
International Qualified and Non-qualified Pension Benefits | Value equities | Level 2
Benefit Plan Information
Fair value of plan assets		98	27
International Qualified and Non-qualified Pension Benefits | Core equities
Benefit Plan Information
Fair value of plan assets		662	1,007
International Qualified and Non-qualified Pension Benefits | Core equities | Level 1
Benefit Plan Information
Fair value of plan assets		227	549
International Qualified and Non-qualified Pension Benefits | Core equities | Level 2
Benefit Plan Information
Fair value of plan assets		430	361
International Qualified and Non-qualified Pension Benefits | Core equities | Level 3
Benefit Plan Information
Fair value of plan assets		5	97
International Qualified and Non-qualified Pension Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets		2,127	1,789
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets		394	384
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets		1,694	1,371
International Qualified and Non-qualified Pension Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	22	39	34
International Qualified and Non-qualified Pension Benefits | Domestic government debt
Benefit Plan Information
Fair value of plan assets		773	656
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 1
Benefit Plan Information
Fair value of plan assets		188	194
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 2
Benefit Plan Information
Fair value of plan assets		579	455
International Qualified and Non-qualified Pension Benefits | Domestic government debt | Level 3
Benefit Plan Information
Fair value of plan assets		6	7
International Qualified and Non-qualified Pension Benefits | Foreign government debt
Benefit Plan Information
Fair value of plan assets		742	398
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 1
Benefit Plan Information
Fair value of plan assets		93	51
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 2
Benefit Plan Information
Fair value of plan assets		647	345
International Qualified and Non-qualified Pension Benefits | Foreign government debt | Level 3
Benefit Plan Information
Fair value of plan assets		2	2
International Qualified and Non-qualified Pension Benefits | Corporate debt securities
Benefit Plan Information
Fair value of plan assets		536	707
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 1
Benefit Plan Information
Fair value of plan assets		113	139
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 2
Benefit Plan Information
Fair value of plan assets		404	555
International Qualified and Non-qualified Pension Benefits | Corporate debt securities | Level 3
Benefit Plan Information
Fair value of plan assets		19	13
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt
Benefit Plan Information
Fair value of plan assets		25	14
International Qualified and Non-qualified Pension Benefits | Mortgage backed debt | Level 2
Benefit Plan Information
Fair value of plan assets		25	14
International Qualified and Non-qualified Pension Benefits | Other - debt obligations
Benefit Plan Information
Fair value of plan assets		51	14
International Qualified and Non-qualified Pension Benefits | Other - debt obligations | Level 2
Benefit Plan Information
Fair value of plan assets		39	2
International Qualified and Non-qualified Pension Benefits | Other - debt obligations | Level 3
Benefit Plan Information
Fair value of plan assets		12	12
International Qualified and Non-qualified Pension Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets		155	88
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 1
Benefit Plan Information
Fair value of plan assets		3
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 2
Benefit Plan Information
Fair value of plan assets		85	18
International Qualified and Non-qualified Pension Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	59	67	70
International Qualified and Non-qualified Pension Benefits | Private equity funds
Benefit Plan Information
Fair value of plan assets		67	29
International Qualified and Non-qualified Pension Benefits | Private equity funds | Level 2
Benefit Plan Information
Fair value of plan assets		47	15
International Qualified and Non-qualified Pension Benefits | Private equity funds | Level 3
Benefit Plan Information
Fair value of plan assets		20	14
International Qualified and Non-qualified Pension Benefits | Real estate
Benefit Plan Information
Fair value of plan assets		88	59
International Qualified and Non-qualified Pension Benefits | Real estate | Level 1
Benefit Plan Information
Fair value of plan assets		3
International Qualified and Non-qualified Pension Benefits | Real estate | Level 2
Benefit Plan Information
Fair value of plan assets		38	3
International Qualified and Non-qualified Pension Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets		47	56
International Qualified and Non-qualified Pension Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets		602	527
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets		232	183
International Qualified and Non-qualified Pension Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	375	370	344
International Qualified and Non-qualified Pension Benefits | Hedge funds
Benefit Plan Information
Fair value of plan assets		172	130
International Qualified and Non-qualified Pension Benefits | Hedge funds | Level 2
Benefit Plan Information
Fair value of plan assets		172	130
International Qualified and Non-qualified Pension Benefits | Insurance
Benefit Plan Information
Fair value of plan assets		369	344
International Qualified and Non-qualified Pension Benefits | Insurance | Level 3
Benefit Plan Information
Fair value of plan assets		369	344
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return
Benefit Plan Information
Fair value of plan assets		58	50
International Qualified and Non-qualified Pension Benefits | Derivatives - Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets		58	50
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return
Benefit Plan Information
Fair value of plan assets		3	3
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets		2	3
International Qualified and Non-qualified Pension Benefits | Other - Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets		1
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets		108	242
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets		106	233
International Qualified and Non-qualified Pension Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets		2	9
Postretirement Benefits
Benefit Plan Information
Total, before other items to reconcile		1,212	1,169
Other items to reconcile to fair value of plan assets		(3)	(20)
Fair value of plan assets	1,075	1,209	1,149
Postretirement Benefits | Level 1
Benefit Plan Information
Total, before other items to reconcile		511	497
Postretirement Benefits | Level 2
Benefit Plan Information
Total, before other items to reconcile		477	403
Postretirement Benefits | Level 3
Benefit Plan Information
Total, before other items to reconcile		224	269
Fair value of plan assets	280	224	269
Postretirement Benefits | Equities
Benefit Plan Information
Fair value of plan assets		512	522
Postretirement Benefits | Equities | Level 1
Benefit Plan Information
Fair value of plan assets		440	440
Postretirement Benefits | Equities | Level 2
Benefit Plan Information
Fair value of plan assets		58	66
Postretirement Benefits | Equities | Level 3
Benefit Plan Information
Fair value of plan assets		14	16
Postretirement Benefits | U.S. equities
Benefit Plan Information
Fair value of plan assets		396	392
Postretirement Benefits | U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets		396	392
Postretirement Benefits | Non-U.S. equities
Benefit Plan Information
Fair value of plan assets		44	48
Postretirement Benefits | Non-U.S. equities | Level 1
Benefit Plan Information
Fair value of plan assets		44	48
Postretirement Benefits | EAFE index funds
Benefit Plan Information
Fair value of plan assets		15	21
Postretirement Benefits | EAFE index funds | Level 2
Benefit Plan Information
Fair value of plan assets		15	21
Postretirement Benefits | Index funds
Benefit Plan Information
Fair value of plan assets		43	45
Postretirement Benefits | Index funds | Level 2
Benefit Plan Information
Fair value of plan assets		43	45
Postretirement Benefits | Long/short equity
Benefit Plan Information
Fair value of plan assets		14	16
Postretirement Benefits | Long/short equity | Level 3
Benefit Plan Information
Fair value of plan assets		14	16
Postretirement Benefits | Fixed Income
Benefit Plan Information
Fair value of plan assets		377	308
Postretirement Benefits | Fixed Income | Level 1
Benefit Plan Information
Fair value of plan assets		61	56
Postretirement Benefits | Fixed Income | Level 2
Benefit Plan Information
Fair value of plan assets		314	248
Postretirement Benefits | Fixed Income | Level 3
Benefit Plan Information
Fair value of plan assets	6	2	4
Postretirement Benefits | U.S. government securities
Benefit Plan Information
Fair value of plan assets		252	210
Postretirement Benefits | U.S. government securities | Level 1
Benefit Plan Information
Fair value of plan assets		55	50
Postretirement Benefits | U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets		197	160
Postretirement Benefits | Non-U.S. government securities
Benefit Plan Information
Fair value of plan assets		12	10
Postretirement Benefits | Non-U.S. government securities | Level 2
Benefit Plan Information
Fair value of plan assets		12	10
Postretirement Benefits | Preferred and convertible securities
Benefit Plan Information
Fair value of plan assets			1
Postretirement Benefits | Preferred and convertible securities | Level 1
Benefit Plan Information
Fair value of plan assets			1
Postretirement Benefits | U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets		68	54
Postretirement Benefits | U.S. corporate bonds | Level 1
Benefit Plan Information
Fair value of plan assets		6	5
Postretirement Benefits | U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets		62	49
Postretirement Benefits | Non-U.S. corporate bonds
Benefit Plan Information
Fair value of plan assets		14	11
Postretirement Benefits | Non-U.S. corporate bonds | Level 2
Benefit Plan Information
Fair value of plan assets		14	11
Postretirement Benefits | Asset-backed securities:
Benefit Plan Information
Fair value of plan assets		5	3
Postretirement Benefits | Asset-backed securities: | Level 2
Benefit Plan Information
Fair value of plan assets		5	3
Postretirement Benefits | Collateralized mortgage obligations
Benefit Plan Information
Fair value of plan assets		7	7
Postretirement Benefits | Collateralized mortgage obligations | Level 2
Benefit Plan Information
Fair value of plan assets		7	7
Postretirement Benefits | Other - fixed income
Benefit Plan Information
Fair value of plan assets		1	2
Postretirement Benefits | Other - fixed income | Level 2
Benefit Plan Information
Fair value of plan assets		1	2
Postretirement Benefits | Private placements
Benefit Plan Information
Fair value of plan assets		11	12
Postretirement Benefits | Private placements | Level 2
Benefit Plan Information
Fair value of plan assets		9	8
Postretirement Benefits | Private placements | Level 3
Benefit Plan Information
Fair value of plan assets		2	4
Postretirement Benefits | Derivative instruments
Benefit Plan Information
Fair value of plan assets		7	(2)
Postretirement Benefits | Derivative instruments | Level 2
Benefit Plan Information
Fair value of plan assets		7	(2)
Postretirement Benefits | Private Equity
Benefit Plan Information
Fair value of plan assets		187	226
Postretirement Benefits | Private Equity | Level 3
Benefit Plan Information
Fair value of plan assets	245	187	226
Postretirement Benefits | Buyouts
Benefit Plan Information
Fair value of plan assets		56	57
Postretirement Benefits | Buyouts | Level 3
Benefit Plan Information
Fair value of plan assets		56	57
Postretirement Benefits | Distressed debt
Benefit Plan Information
Fair value of plan assets		17	18
Postretirement Benefits | Distressed debt | Level 3
Benefit Plan Information
Fair value of plan assets		17	18
Postretirement Benefits | Growth equity
Benefit Plan Information
Fair value of plan assets		1	1
Postretirement Benefits | Growth equity | Level 3
Benefit Plan Information
Fair value of plan assets		1	1
Postretirement Benefits | Mezzanine
Benefit Plan Information
Fair value of plan assets		3	3
Postretirement Benefits | Mezzanine | Level 3
Benefit Plan Information
Fair value of plan assets		3	3
Postretirement Benefits | Real estate
Benefit Plan Information
Fair value of plan assets		4	5
Postretirement Benefits | Real estate | Level 3
Benefit Plan Information
Fair value of plan assets		4	5
Postretirement Benefits | Secondary
Benefit Plan Information
Fair value of plan assets		6	5
Postretirement Benefits | Secondary | Level 3
Benefit Plan Information
Fair value of plan assets		6	5
Postretirement Benefits | Other - private equity
Benefit Plan Information
Fair value of plan assets			43
Postretirement Benefits | Other - private equity | Level 3
Benefit Plan Information
Fair value of plan assets			43
Postretirement Benefits | Venture capital
Benefit Plan Information
Fair value of plan assets		100	94
Postretirement Benefits | Venture capital | Level 3
Benefit Plan Information
Fair value of plan assets		100	94
Postretirement Benefits | Absolute Return
Benefit Plan Information
Fair value of plan assets		57	56
Postretirement Benefits | Absolute Return | Level 2
Benefit Plan Information
Fair value of plan assets		40	36
Postretirement Benefits | Absolute Return | Level 3
Benefit Plan Information
Fair value of plan assets	22	17	20
Postretirement Benefits | Hedge funds and hedge fund of funds
Benefit Plan Information
Fair value of plan assets		43	38
Postretirement Benefits | Hedge funds and hedge fund of funds | Level 2
Benefit Plan Information
Fair value of plan assets		40	36
Postretirement Benefits | Hedge funds and hedge fund of funds | Level 3
Benefit Plan Information
Fair value of plan assets		3	2
Postretirement Benefits | Bank loan and other fixed income funds
Benefit Plan Information
Fair value of plan assets		14	18
Postretirement Benefits | Bank loan and other fixed income funds | Level 3
Benefit Plan Information
Fair value of plan assets		14	18
Postretirement Benefits | Commodities
Benefit Plan Information
Fair value of plan assets		18	14
Postretirement Benefits | Commodities | Level 2
Benefit Plan Information
Fair value of plan assets		14	11
Postretirement Benefits | Commodities | Level 3
Benefit Plan Information
Fair value of plan assets	7	4	3
Postretirement Benefits | Cash and Cash Equivalents
Benefit Plan Information
Fair value of plan assets		61	43
Postretirement Benefits | Cash and Cash Equivalents | Level 1
Benefit Plan Information
Fair value of plan assets		10	1
Postretirement Benefits | Cash and Cash Equivalents | Level 2
Benefit Plan Information
Fair value of plan assets		$ 51	$ 42