Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
Apr. 30, 2011	Apr. 30, 2010
Cash Flows from Operating Activities:
Net Income	$ 131,848	$ 160,574
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	52,481	51,231
Amortization of investment tax credits	(185)	(181)
Allowance for doubtful accounts	3,767	3,912
Gain on sale of interest in equity method investment, net of tax	0	(30,222)
Net gain on sale of property	0	(133)
Income from equity method investments	(20,140)	(25,142)
Distributions of earnings from equity method investments	13,177	27,433
Deferred income taxes	42,873	(4,447)
Changes in assets and liabilities:
Gas purchase derivatives, at fair value	(2,780)	(7,736)
Receivables	(54,276)	(52,561)
Inventories	23,859	20,902
Amounts due from/to customers	79,235	147,575
Settlement of legal asset retirement obligations	(1,113)	(634)
Overfunded postretirement asset	(22,450)	(10,598)
Regulatory asset for postretirement benefits	814	466
Other assets	43,825	71,578
Accounts payable	(14,374)	(18,610)
Provision for postretirement benefits	385	(10,493)
Other liabilities	7,903	37,664
Net cash provided by operating activities	284,849	360,578
Cash Flows from Investing Activities:
Utility construction expenditures	(89,428)	(70,039)
Allowance for funds used during construction	(3,675)	(1,302)
Contributions to equity method investments	(3,892)	0
Distributions of capital from equity method investments	8,968	701
Proceeds from sale of interest in equity method investment	0	57,500
Proceeds from sale of property	765	1,210
Investments in marketable securities	(450)	(468)
Other	992	204
Net cash used in investing activities	(86,720)	(12,194)
Cash Flows from Financing Activities:
Borrowings under bank debt	944,000	558,000
Repayments under bank debt	(1,082,500)	(828,500)
Retirement of long-term debt	(79)	(384)
Expenses related to issuance of credit facility	(2,155)	0
Issuance of common stock through dividend reinvestment and employee stock plans	10,426	9,817
Repurchases of common stock	(23,004)	(47,282)
Dividends paid	(41,104)	(39,909)
Other	(6)	(694)
Net cash used in financing activities	(194,422)	(348,952)
Net Increase (Decrease) in Cash and Cash Equivalents	3,707	(568)
Cash and Cash Equivalents at Beginning of Period	5,619	7,558
Cash and Cash Equivalents at End Period	$ 9,326	$ 6,990

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The cash outflow paid related to the expansion of a short-term debt facility

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The net change during the reporting period in the asset created by a public utility's ability to recover gas costs and margin decoupling amounts that are higher or lower than the amounts included in billing calculations.

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The net change during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer postretirement costs to the balance sheet instead of accumulated OCI.

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The cash outflow for investments (not to include restricted cash) that are related to deferred compensation plans with assets held in rabbi trusts.

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Cash inflow due to change during the period in the allowance for other funds used during construction classified as an investing activity.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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The net change between the beginning and ending balance of cash and cash equivalents.

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The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations.

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This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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The gains and losses included in results of operations resulting from the sale or disposal of property, plant and equipment which do not qualify for treatment as discontinued operations.

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The difference between the book value and the sale price of investments in joint ventures and entities in which the reporting entity has an equity ownership interest, generally of 20 to 50 percent, and exercises significant influence. This element refers to the non cash gain (loss).

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. Such amount typically reflects adjustments similar to those made in preparing consolidated statements, including adjustments to eliminate intercompany gains and losses, and to amortize, if appropriate, any difference between cost and underlying equity in net assets of the investee at the date of investment.

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The net change during the reporting period in the aggregate amount of obligations due within one year (or one business cycle). This may include trade payables, amounts due to related parties, royalties payable, and other obligations.

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The net change during the reporting period in the carrying amount of asset retirement obligations.

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The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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The net change during the reporting period in other operating assets not otherwise defined in the taxonomy.

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The net change during the reporting period in other operating obligations not otherwise defined in the taxonomy.

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The net change during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees.

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The net change in the beginning and end of period Prepaid Pension costs.

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The net change during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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The net change during the reporting period in the aggregate market value of financial instruments that are purchased and held principally for the purpose of hedging or mitigating market risk, credit risk, legal risk, operational risk, and other types of risk.

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The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.

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The net cash inflow (outflow) from financing activity for the period.

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The net cash inflow (outflow) from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow to reacquire common stock during the period.

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The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from bank borrowing during the year.

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- Definition

The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The cash inflow associated with the amount received from the stock plan during the period.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

+ References

+ Details

Name:	us-gaap_ProvisionForDoubtfulAccounts
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow to settle a bank borrowing during the year.

+ References

+ Details

Name:	us-gaap_RepaymentsOfBankDebt
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration