Employee Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2012

Employee Retirement Plans [Abstract]

Changes In Benefit Obligation And Funded Status Of Employee Retirement Plans

	Pension benefits				Postretirement benefits
December 31,	2012		2011		2012		2011
Change in benefit obligation
Benefit obligation at beginning of year	$	3,224	$	3,008	$	957	$	976
Service cost		62		53		13		13
Interest cost		154		153		45		49
Plan participants' contributions		1		1		12		12
Amendments		3		3
Actuarial loss (gain)		409		175		20		(31)
Other		5		3		1
Benefits paid		(239)		(171)		(66)		(67)
Medicare subsidy received						5		5
Foreign currency translation		11		(1)
Benefit obligation at end of year	$	3,630	$	3,224	$	987	$	957
Change in plan assets
Fair value of plan assets at beginning of year	$	2,770	$	2,690
Actual gain on plan assets		309		232
Employer contributions		122		18
Plan participants' contributions		1		1
Benefits paid		(239)		(171)
Foreign currency translation		12
Fair value of plan assets at end of year	$	2,975	$	2,770
Funded status at end of year
Fair value of plan assets	$	2,975	$	2,770
Benefit obligations		(3,630)		(3,224)	$	(987)	$	(957)
Funded status of plans	$	(655)	$	(454)	$	(987)	$	(957)
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	$	14
Current liability		(31)	$	(11)	$	(57)	$	(60)
Noncurrent liability		(638)		(443)		(930)		(897)
Recognized liability	$	(655)	$	(454)	$	(987)	$	(957)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial loss	$	1,205	$	1,019	$	274	$	269
Prior service cost (credit)		25		29		(29)		(35)
Amount recognized at end of year	$	1,230	$	1,048	$	245	$	234

Projected Benefit Obligation And Accumulated Benefit Obligation For Pension Plans

	December 31,
	2012		2011
Projected benefit obligation	$	3,371	$	388
Accumulated benefit obligation	$	3,196	$	360
Fair value of plan assets	$	2,702	$	14

Summary Of The Components Of Net Periodic Benefit Cost

	Pension benefits						Postretirement benefits
	2012		2011		2010		2012		2011		2010
Service cost	$	62	$	53	$	46	$	13	$	13	$	12
Interest cost		154		153		157		45		49		50
Expected return on plan assets		(157)		(161)		(168)
Amortization of net loss		72		79		50		15		18		15
Amortization of prior service cost (credit)		8		9		9		(6)		(6)		(6)
Total periodic benefit expense	$	139	$	133	$	94	$	67	$	74	$	71
Curtailment charge						(1)
Total expense	$	139	$	133	$	93	$	67	$	74	$	71
Other changes in plan assets and benefit obligations recognized in other comprehensive income:
Curtailment effects					$	1
Current year actuarial loss (gain)	$	257	$	107		106	$	20	$	(31)	$	77
Amortization of actuarial loss		(72)		(79)		(50)		(16)		(18)		(15)
Current year prior service (credit)/loss		3		3		23						(31)
Amortization of prior service (cost) credit		(8)		(9)		(9)		6		6		6
Total recognized in other comprehensive income (loss)	$	180	$	22	$	71	$	10	$	(43)	$	37
Total recognized in net periodic benefit cost and other comprehensive income	$	319	$	155	$	164	$	77	$	31	$	108

Weighted-Average Assumptions Used To Determine Benefit Obligations

	Pension benefits						Postretirement benefits
	Domestic			International			Domestic
	2012	2011	2010	2012	2011	2010	2012	2011	2010
Discount rate	3.75%	4.75%	5.25%	4.48%	4.40%	4.75%	4.00%	4.75%	5.25%
Rate of compensation increase	4.00%	4.25%	4.25%	3.45%	3.44%	4.35%

Weighted-Average Assumptions Used To Determine Net Periodic Benefit Cost

	Pension benefits						Postretirement benefits
	Domestic			International			Domestic
	2012	2011	2010	2012	2011	2010	2012	2011	2010
Discount rate	4.75%	5.25%	5.75%	4.40%	4.75%	5.75%	4.75%	5.25%	5.75%
Expected return on plan assets	6.00%	6.50%	7.25%	6.01%	5.59%	6.01%
Rate of compensation increase	4.25%	4.25%	4.25%	3.44%	4.35%	4.04%

Assumed Rate Of Return Determined Based On Current Interest Rate Environment And Historical Market Premiums Relatives To Fixed Income Rates Of Equities And Other Assets Classes

Assumed health care trend rates at December 31	2012	2011
Health care cost trend rate assumed for next year	7.5%	8.0%
Rate that the cost trend rate gradually declines to	5%	5%
Year that the rate reaches the ultimate trend rate	2018	2018

Schedule Of Effect One-Percentage-Point Change In Assumed Health Care Cost Trend Rate

	One-percentage-point increase	One-percentage-point decrease
Effect on annual total of service and interest cost	$  5	$  (4)
Effect on postretirement benefit obligation	$57	$(46)

Schedule Of Defined Benefit Plan Assets Measured At Fair Value

The following tables provide fair value measurement information for the Company's major categories of defined benefit plan assets (in millions):

			Fair value measurements at reporting date using
	December 31, 2012		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Equity securities:
U.S. companies	$	313	$	185	$	128
International companies		314		96		218
Fixed income:
U.S. corporate bonds		1,624		151		1,473
International fixed income		245		182		63
Other fixed income
Private equity (1)		221					$	221
Real estate (2)		103						103
Insurance contracts		6						6
Cash equivalents		57		57
Commodities (3)		92				92
Total	$	2,975	$	671	$	1,974	$	330

(1) This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies.  The inputs are valued by internally generated Discounted Cash Flow Analysis and comparable sale analysis.

(2) This category includes industrial, office, apartments, hotels, infrastructure, and retail investments which are limited partnerships predominately in the U.S.  The inputs are valued by internally generated Discounted Cash Flow Analysis; compare sale analysis and periodic external appraisals.

(3) This category includes investments in energy, industrial metals, precious metals, agricultural and livestock primarily through futures, options, swaps, and exchange traded funds.

			Fair value measurements at reporting date using
	December 31, 2011		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)
Equity securities:
U.S. companies	$	315	$	215	$	100
International companies		312		80		232
Fixed income:
U.S. corporate bonds		1,446				1,446
International fixed income		173				173
Other fixed income
Private equity (1)		241					$	241
Real estate (2)		91						91
Insurance contracts		5						5
Cash equivalents		97		97
Commodities (3)		90				90
Total	$	2,770	$	392	$	2,041	$	337

(1)   This category includes venture capital, leverage buyouts and distressed debt limited partnerships invested primarily in U.S. companies.  The inputs are valued by internally generated Discounted Cash Flow Analysis and comparable sale analysis.

(2)   This category includes industrial, office, apartments, hotels, infrastructure, and retail investments which are limited partnerships predominately in the U.S.  The inputs are valued by internally generated Discounted Cash Flow Analysis; comparable sale analysis and periodic external appraisals.

(3)   This category includes investments in energy, industrial metals, precious metals, agricultural and livestock primarily through futures, options, swaps, and exchange traded funds.

Summary Of Changes In Fair Value Of The Defined Benefit Plans Level 3 Assets

	Level 3 assets
	Year ended December 2012
	Private equity		Real estate		Insurance contracts
Beginning balance at December 31, 2011	$	241	$	91	$	5
Actual return on plan assets relating to assets still held at the reporting date		26		11
Purchases, sales, and settlements
Transfers in and/or out of level 3		(46)		1		1
Ending balance at December 31, 2012	$	221	$	103	$	6

	Level 3 assets
	Year ended December 2011
	Private equity		Real estate		Insurance contracts
Beginning balance at December 31, 2010	$	234	$	74	$	5
Actual return on plan assets relating to assets still held at the reporting date		27		6
Purchases, sales, and settlements
Transfers in and/or out of level 3		(20)		11
Ending balance at December 31, 2011	$	241	$	91	$	5

Estimated Future Benefit Payments, And Gross Amount Of Annual Medicare Part D Subsidy Expected To Be Received

	Expected benefit payments
	Pension benefits	Postretirement benefits	Expected federal subsidy payments postretirement benefits
2013	$   208	$  73	$  6
2014	$   188	$  77	$  6
2015	$   196	$  80	$  7
2016	$   198	$  83	$  7
2017	$   201	$  85	$  7
2018-2022	$1,101	$456	$42