Postretirement Benefits - Schedule of Net Benefit (Details) employees in Thousands, $ in Millions	12 Months Ended
Oct. 31, 2017 USD ($) employees	Oct. 31, 2016 USD ($)	Oct. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 4,000	$ 4,000
Number Of Former Employees And Their Beneficiaries Included In Retiree Population \| employees	32
Net postretirement benefits expense	$ 118	153	$ 150
Defined Benefit Plan, Benefits Paid (Deprecated 2017-01-31)	(16)
Liability, Defined Benefit Plan, Noncurrent	(2,497)	(3,023)
Liability, Defined Benefit Plan	$ (2,555)	(3,098)
Defined benefit plan, weighted average rate of increase in in per capita cost percent of benefit obligation	9.00%
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Assets for Plan Benefits, Defined Benefit Plan	$ 16	6
Defined Benefit Plan, Benefit Obligation	3,799	4,027	3,979
Service cost	(7)	(9)	(13)
Interest on obligations	107	118	142
Amortization of cumulative loss	116	104	97
Amortization of cumulative loss	0	0	1
Defined Benefit Plan, Plan Assets, Payment for Settlement	23	0	0
Contractual termination benefits	10	3	(1)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment	0	0	0
Premiums on pension insurance	15	15	11
Expected return on assets	(157)	(167)	(194)
Net postretirement benefits expense	121	82	69
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(18)	225
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	52	0
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	10	3
Defined Benefit Plan, Accumulated Benefit Obligation, (Increase) Decrease for Settlement and Curtailment	2	0
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	17	(7)
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31)	0	0
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	0	0
Defined Benefit Plan, Benefits Paid (Deprecated 2017-01-31)	(297)	(300)
Fair Value of Plan Assets	2,363	2,310	2,422
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	2,346	2,297
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	256	79
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss)	18	(6)
Defined Benefit Plan, Plan Assets, Contributions by Employer	112	100
Defined Benefit Plan Change In Fair Value Of Plan Assets Benefits Paid	(281)	(285)
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,436)	(1,717)
Liability, Defined Benefit Plan, Current	(16)	(17)
Liability, Defined Benefit Plan, Noncurrent	(1,436)	(1,706)
Liability, Defined Benefit Plan	(1,436)	(1,717)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	2,183	2,442
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	2,183	2,442
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(116)	313	312
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(116)	(104)	(97)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	0	(1)
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement, After Tax	23	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax	2	0	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Currancy Translation Adjustment, before Tax	0	(1)	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	(257)	208	214
Net postretirement benefit expense (income) and other comprehensive loss (income)	$ (136)	290	283
Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	7.10%
Assets for Plan Benefits, Defined Benefit Plan	$ 0	0
Defined Benefit Plan, Benefit Obligation	1,435	1,708	1,887
Service cost	(5)	(5)	(6)
Interest on obligations	47	58	71
Amortization of cumulative loss	22	31	39
Amortization of cumulative loss	0	(1)	(4)
Defined Benefit Plan, Plan Assets, Payment for Settlement	0	0	0
Contractual termination benefits	4	4	(1)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment	(58)	0	0
Premiums on pension insurance	0	0	0
Expected return on assets	(23)	(26)	(30)
Net postretirement benefits expense	(3)	71	81
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(183)	(138)
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement	0	0
Defined Benefit Plan, Benefit Obligation, Special and Contractual Termination Benefits	4	4
Defined Benefit Plan, Accumulated Benefit Obligation, (Increase) Decrease for Settlement and Curtailment	58	0
Defined Benefit Plan, Benefit Obligation, Foreign Currency Translation Gain (Loss)	0	0
Defined Benefit Plan, Contributions by Plan Participants (Deprecated 2017-01-31)	36	34
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	42	37
Defined Benefit Plan, Benefits Paid (Deprecated 2017-01-31)	(166)	(179)
Fair Value of Plan Assets	333	333	369
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	333	333
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	38	3
Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss)	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	2	2
Defined Benefit Plan Change In Fair Value Of Plan Assets Benefits Paid	(40)	(41)
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,102)	(1,375)
Liability, Defined Benefit Plan, Current	(41)	(58)
Liability, Defined Benefit Plan, Noncurrent	(1,061)	(1,317)
Liability, Defined Benefit Plan	(1,102)	(1,375)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	252	472
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	252	472
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(197)	(115)	(7)
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax	(22)	(31)	(39)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	0	1	4
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement, After Tax	0	0	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax	0	0	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Currancy Translation Adjustment, before Tax	0	0	0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	(219)	(145)	(42)
Net postretirement benefit expense (income) and other comprehensive loss (income)	$ (222)	(74)	39
Defined benefit plan, weighted average rate of increase in in per capita cost percent of benefit obligation	93.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred Income Taxes and Other Assets, Noncurrent	$ 503
Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	983	917
Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	160	156
Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	1,099	1,078
Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	99	121
Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	263	301
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	1	1
Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	74	56
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables	0	0
Cash and Cash Equivalents [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	86	76
Cash and Cash Equivalents [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6	19
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	86	76
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	6	19
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Cash and Cash Equivalents [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Government [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	20	0
Government [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Government [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	20	0
Government [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
US Large Cap [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
US Smid Cap [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Canadian Equity [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Canadian Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Canadian Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Canadian Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
International Equity [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
International Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Emerging Markets Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Equity [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	62	80
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	62	80
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
US Treasury and Government [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0	0
US Treasury and Government [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	8	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	8	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets		0	$ 0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0
US Treasury and Government [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Asset-backed Securities [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Common And Preferred Stock [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Common And Preferred Stock [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Common And Preferred Stock [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Common And Preferred Stock [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
U.S. Equity [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	316	294
U.S. Equity [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	71	66
U.S. Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	316	294
U.S. Equity [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	71	66
U.S. Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
U.S. Equity [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
U.S. Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
U.S. Equity [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Canadian Equity Other [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	19	29
Canadian Equity Other [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	19	29
Canadian Equity Other [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Canadian Equity Other [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
International Equity Other [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	327	291
International Equity Other [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	74	71
International Equity Other [Member] \| Fair Value, Inputs, Level 1 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	327	291
International Equity Other [Member] \| Fair Value, Inputs, Level 1 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	74	71
International Equity Other [Member] \| Fair Value, Inputs, Level 2 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity Other [Member] \| Fair Value, Inputs, Level 2 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
International Equity Other [Member] \| Fair Value, Inputs, Level 3 [Member] \| Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
International Equity Other [Member] \| Fair Value, Inputs, Level 3 [Member] \| Health and Life Insurance Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	0
Defined Benefit Plan, Alternative Investments, Fair Value of Plan Assets	0	0
Global Equity [Member] \| Pension Benefits
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Defined benefit plan, weighted average rate of increase in in per capita cost percent of benefit obligation

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

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Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

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Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

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Amount of (increase) decrease to benefit obligation of defined benefit plan from remeasurement due to settlement. Excludes decrease to benefit obligation for settlement payment.

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Amount, before benefit payment, of receipt from prescription drug subsidy which increases benefit obligation of defined benefit postretirement plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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