Postretirement Benefits (Tables)

12 Months Ended

Oct. 31, 2012

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

Obligations and Funded Status

A summary of the changes in benefit obligations and plan assets is as follows:

	Pension Benefits						Health and Life Insurance Benefits
(in millions)	2012			2011			2012			2011
Change in benefit obligations
Benefit obligations at beginning of year	$	4,171		$	4,005		$	2,000		$	1,162
Amendments and administrative changes	—			—			—			302
Service cost	17			17			7			8
Interest on obligations	169			189			83			56
Actuarial loss (gain)	462			242			(72		)	547
Curtailments	4			(11		)	—			11
Contractual termination benefits	2			38			(3		)	6
Retrospective payments due to retirees	—			—			(2		)	15
Currency translation	(5		)	26			—			—
Plan participants' contributions	—			—			20			34
Subsidy receipts	—			—			20			—
Benefits paid	(328		)	(335		)	(187		)	(141		)
Benefit obligations at end of year	$	4,492		$	4,171		$	1,866		$	2,000
Change in plan assets
Fair value of plan assets at beginning of year	$	2,392		$	2,479		$	463		$	509
Actual return on plan assets	186			75			27			22
Currency translation	(9		)	25			—			—
Employer contributions	157			134			19			2
Benefits paid	(315		)	(321		)	(72		)	(70		)
Fair value of plan assets at end of year	$	2,411		$	2,392		$	437		$	463
Funded status at year end	$	(2,081	)	$	(1,779	)	$	(1,429	)	$	(1,537	)
Amounts recognized in our Consolidated Balance Sheets consist of:
Current liability	$	(14	)	$	(13	)	$	(92	)	$	(93	)
Noncurrent liability	(2,067		)	(1,766		)	(1,337		)	(1,444		)
Net liability recognized	$	(2,081	)	$	(1,779	)	$	(1,429	)	$	(1,537	)
Amounts recognized in our accumulated other comprehensive loss consist of:
Net actuarial loss	$	2,529		$	2,170		$	558		$	654
Net prior service cost (benefit)	3			5			(13		)	(21		)
Net amount recognized	$	2,532		$	2,175		$	545		$	633

Components Of Postretirement Benefits Income Expense Included in Statement Of Operations [Table Text Block]

The components of our postretirement benefits expense included in our Consolidated Statements of Operations for the years ended October 31 consist of the following:

(in millions)	2012		2011		2010
Pension expense	$	122	$	139	$	142
Health and life insurance expense	81		30		37
Total postretirement benefits expense	$	203	$	169	$	179

Schedule of Net Benefit Costs [Table Text Block]

Net postretirement benefits expense included in our Consolidated Statements of Operations, and other amounts recognized in our Consolidated Statements of Stockholders' Equity (Deficit), for the years ended October 31 is comprised of the following:

	Pension Benefits									Health and Life Insurance Benefits
(in millions)	2012			2011			2010			2012			2011			2010
Service cost for benefits earned during the period	$	17		$	17		18			$	7		$	8		$	8
Interest on obligation	169			189			209			83			56			81
Amortization of cumulative loss	112			97			98			38			4			8
Amortization of prior service cost (benefit)	1			1			1			(5		)	(29		)	(20		)
Curtailments	5			2			1			(3		)	11			2
Contractual termination benefits	2			38			1			(2		)	6			(2		)
Retrospective payments to retirees	—			—			—			(2		)	15			—
Premiums on pension insurance	8			6			7			—			—			—
Expected return on assets	(192		)	(211		)	(193		)	(35		)	(41		)	(40		)
Net postretirement benefits expense	$	122		$	139		$	142		$	81		$	30		$	37
Other Changes in plan assets and benefit obligations recognized in other comprehensive loss (income)
Actuarial net loss (gain)	$	469		$	374		$	77		$	(58	)	$	566		$	(127	)
Amortization of cumulative loss	(112		)	(97		)	(98		)	(38		)	(4		)	(8		)
Prior service cost (benefit)	(1		)	—			4			—			302			(341		)
Amortization of prior service benefit (cost)	(1		)	(1		)	(1		)	5			29			20
Curtailments	—			(13		)	(3		)	3			—			—
Currency translation	2			4			4			—			—			—
Total recognized in other comprehensive loss (income)	$	357		$	267		$	(17	)	$	(88	)	$	893		$	(456	)
Total net postretirement benefits expense and other comprehensive loss (income)	$	479		$	406		$	125		$	(7	)	$	923		$	(419	)

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

The estimated amounts for the defined benefit pension plans and the other postretirement benefit plans that will be amortized from AOCL into net periodic benefit expense over the next fiscal year are as follows:

(in millions)	Pension Benefits		Health and Life Insurance Benefits
Amortization of prior service cost (benefit)	$	1	$	(4	)
Amortization of cumulative losses	127		29

Schedule of Assumptions Used [Table Text Block]

Assumptions

The weighted average rate assumptions used in determining benefit obligations for the years ended October 31, 2012 and 2011 were:

	Pension Benefits				Health and Life Insurance Benefits
	2012		2011		2012		2011
Discount rate used to determine present value of benefit obligation at end of year	3.2	%	4.2	%	3.4	%	4.2	%
Expected rate of increase in future compensation levels	3.5	%	3.5	%	—		—

The weighted average rate assumptions used in determining net postretirement benefits expense for 2012, 2011, and 2010 were:

	Pension Benefits						Health and Life  Insurance Benefits
	2012		2011		2010		2012		2011		2010
Discount rate(A)	4.1	%	4.8	%	5.4	%	4.2	%	4.6	%	5.6	%
Expected long-term rate of return on plan assets	8.3	%	8.5	%	8.5	%	8.3	%	8.5	%	8.5	%
Expected rate of increase in future compensation levels	3.5	%	3.5	%	3.5	%	—		—		—

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(A) In 2012 for pension benefits, the weighted average discount rate used to compute the expense for the period of November 1, 2011 through July 31, 2012 was 4.2%. Due to plan remeasurements at July 31, 2012 at a rate of 3.3%, the weighted average discount rate for the full fiscal year 2012 was 4.1%. In 2010 for health and life insurance benefits, the weighted average discount rate used to compute the expense for the period of November 1, 2009 through March 31, 2010 was 5.5%. Due to a plan remeasurement at March 31, 2010 at a rate of 5.6%, the weighted average discount rate for the full fiscal year 2010 was 5.6%.

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

The effect of changing the health care cost trend rate by one-percentage point for each future year is as follows:

(in millions)	One-Percentage Point Increase		One-Percentage Point Decrease
Effect on total of service and interest cost components	$	10	$	(10	)
Effect on postretirement benefit obligation	215		(179		)

Schedule of Expected Benefit Payments [Table Text Block]

The expected future benefit payments for the years ending October 31, 2013 through 2017 and the five years ending October 31, 2022 are estimated as follows:

(in millions)	Pension Benefit Payments		Other Postretirement Benefit Payments(A)
2013	$	326	$	135
2014	318		132
2015	308		134
2016	301		127
2017	294		121
2018 through 2022	1,362		543

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(A) Payments are net of expected participant contributions and expected federal subsidy receipts.

Pension Plans, Defined Benefit [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

Information for pension plans with accumulated benefit obligations in excess of plan assets were as follows:

(in millions)	2012		2011
Projected benefit obligations	$	4,492	$	4,171
Accumulated benefit obligations	4,431		4,113
Fair value of plan assets	2,411		2,392

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

The table below presents the changes for those financial instruments classified within Level 3 of the valuation hierarchy for pension assets for the years ended October 31, 2012 and 2011:

(in millions)	Hedge Funds			Private Equity		Real Estate		Insurance Contract			Fixed Income Derivative		Equity Derivatives
Balance at November 1, 2010	$	102		$	57	$	1	$	120		$	—	$	—
Unrealized gains (losses)	(21		)	15		—		—			—		—
Realized gains	19			—		—		1			—		—
Purchases, issuances, and settlements	(1		)	3		—		(121		)	—		—
Balance at October 31, 2011	$	99		$	75	$	1	$	—		$	—	$	—
Unrealized gains (losses)	(1		)	10		—		—			19		4
Realized gains	4			—		—		—			—		—
Purchases, issuances, and settlements	(10		)	7		—		—			—		—
Balance at October 31, 2012	$	92		$	92	$	1	$	—		$	19	$	4

Schedule of Allocation of Plan Assets [Table Text Block]

	2012								2011
(in millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Asset Category
Cash and Cash Equivalents	$	85	$	—	$	—	$	85	$	82	$	—	$	—	$	82
Equity
U.S. Large Cap	463		—		—		463		492		—		—		492
U.S. Small-Mid Cap	271		—		—		271		242		—		—		242
Canadian	108		—		—		108		103		—		—		103
International	186		—		—		186		179		—		—		179
Emerging Markets	101		—		—		101		105		—		—		105
Equity derivative	—		—		4		4		—		—		—		—
Fixed Income
Corporate Bonds	—		136		—		136		—		466		—		466
Government Bonds	—		547		—		547		—		225		—		225
Asset Backed Securities	—		9		—		9		—		19		—		19
Mortgage Backed Securities	—		1		—		1		—		8		—		8
Fixed income derivative	—		—		19		19		—		—		—		—
Collective Trusts and Other
Common and Preferred Stock	—		244		—		244		—		231		—		231
Commodities	—		66		—		66		—		76		—		76
Hedge Funds	—		—		92		92		—		—		99		99
Private Equity	—		—		92		92		—		—		75		75
Mutual Funds	36		—		—		36		34		—		—		34
Real Estate	—		—		1		1		—		—		1		1
Total(A)	$	1,250	$	1,003	$	208	$	2,461	$	1,237	$	1,025	$	175	$	2,437

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(A) For both October 31, 2012 and 2011, the totals exclude $8 million of receivables, which are included in the change in plan assets table. In addition, the table above includes the fair value of Canadian pension assets translated at the exchange rates as of October 31, 2012 and 2011, respectively, while the change in plan asset table includes the fair value of Canadian pension assets translated at historical foreign currency rates.

Other Postretirement Benefit Plans, Defined Benefit [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets [Table Text Block]

The table below presents the changes for those financial instruments classified within Level 3 of the valuation hierarchy for other postretirement benefit assets for the years ended October 31, 2012 and 2011:

(in millions)	Hedge Funds			Private Equity
Balance at November 1, 2010	$	25		$	14
Unrealized gains (losses)	(4		)	4
Purchases, issuances, and settlements	4			1
Balance at October 31, 2011	$	25		$	19
Unrealized gains (losses)	(2		)	2
Realized gains	2			—
Purchases, issuances, and settlements	(6		)	2
Balance at October 31, 2012	$	19		$	23

Schedule of Allocation of Plan Assets [Table Text Block]

	2012								2011
(in millions)	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Asset Category
Cash and Cash Equivalents	$	31	$	—	$	—	$	31	$	24	$	—	$	—	$	24
Equity
U.S. Large Cap	82		—		—		82		100		—		—		100
U.S. Small-Mid Cap	64		—		—		64		59		—		—		59
Emerging Markets	22		—		—		22		26		—		—		26
International	63		—		—		63		68		—		—		68
Fixed Income
Corporate Bonds	—		49		—		49		—		77		—		77
Government Bonds	—		66		—		66		—		42		—		42
Asset Backed Securities	—		4		—		4		—		4		—		4
Mortgage Backed Securities	—		—		—		—		—		1		—		1
Collective Trusts and Other
Commodities	—		13		—		13		—		17		—		17
Hedge Funds	—		—		19		19		—		—		25		25
Private Equity	—		—		23		23		—		—		19		19
Total(A)	$	262	$	132	$	42	$	436	$	277	$	141	$	44	$	462

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(A) For both October 31, 2012 and 2011, the totals excludes $1 million of receivables, which are included in the change in plan asset table.