Approximate length of interstate natural gas pipeline, in miles, to be constructed by joint venture.

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- Definition

The estimated investment our company will make to fund an amount in proportion to our ownership interest for the development and construction of the pipeline project.

+ References

No definition available.

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Total estimated cost pertaining to the development and construction of new pipeline.

+ References

No definition available.

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Percentage of funding expected to occur during a given time period.

+ References

No definition available.

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- Definition

The number of Marcellus producers-shippers that have service agreements with a negotiated rate structure for the capacity of the pipeline.

+ References

No definition available.

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- Definition

Percentage of pipeline capacity subscribed to by local distribution companies

+ References

No definition available.

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- Definition

Target date for the pipleline to be placed into service, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Duration of pipeline capacity subscriptions under a negotiated rate structure.

+ References

No definition available.

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- Definition

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The cash outflow associated with the purchase of or advances to an 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.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Equity Method Investments (Details) (USD $)	6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended	24 Months Ended
Equity Method Investments (Details) (USD $)	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2013 Cardinal Pipeline Company [Member]	Apr. 30, 2012 Cardinal Pipeline Company [Member]	Apr. 30, 2013 Cardinal Pipeline Company [Member]	Apr. 30, 2012 Cardinal Pipeline Company [Member]	Oct. 31, 2012 Cardinal Pipeline Company [Member]	Apr. 30, 2013 Pine Needle Company [Member]	Apr. 30, 2012 Pine Needle Company [Member]	Apr. 30, 2013 Pine Needle Company [Member]	Apr. 30, 2012 Pine Needle Company [Member]	Oct. 31, 2012 Pine Needle Company [Member]	Apr. 30, 2013 South Star Energy Services [Member]	Apr. 30, 2012 South Star Energy Services [Member]	Apr. 30, 2013 South Star Energy Services [Member]	Apr. 30, 2012 South Star Energy Services [Member]	Oct. 31, 2012 South Star Energy Services [Member]	Apr. 30, 2013 Piedmont Hardy Storage [Member]	Apr. 30, 2012 Piedmont Hardy Storage [Member]	Apr. 30, 2013 Piedmont Hardy Storage [Member]	Apr. 30, 2012 Piedmont Hardy Storage [Member]	Oct. 31, 2012 Piedmont Hardy Storage [Member]	Apr. 30, 2013 Constitution Pipeline Company [Member]	Apr. 30, 2013 Constitution Pipeline Company [Member]	Oct. 31, 2015 Constitution Pipeline Company [Member]
Schedule Of Equity Method Investments [Line Items]
Equity Method Investment Ownership Percentage			21.49%		21.49%			40.00%		40.00%			15.00%		15.00%			50.00%		50.00%			24.00%	24.00%
Pipeline Subscription Capacity Percentage																							100.00%
Related Party Transaction Expenses From Transactions With Related Party			$ 2,155,000	$ 1,012,000	$ 4,294,000	$ 2,047,000		$ 2,730,000	$ 2,464,000	$ 5,516,000	$ 4,983,000							$ 2,425,000	$ 2,425,000	$ 4,851,000	$ 4,851,000
Due To Related Parties Current			730,000		730,000		855,000	919,000		919,000		914,000						808,000		808,000		808,000
Due From Related Parties Current													579,000		579,000		473,000
Revenue from Related Parties													592,000	(26,000)	583,000	(139,000)
Contributions to equity method investments	8,748,000	3,356,000																					1,200,000	8,700,000
Estimated Piedmont Contributions To Pipeline Project																							163,000,000	163,000,000
Term Pipeline Subscription Agreements																							15 years	15 years
Approximate Pipeline Length																							120	120
Estimated Pipeline Development And Construction Costs																							$ 680,000,000	$ 680,000,000
Funding Percentage of Total Estimated Piedmont Contributions																									90.00%
Pipeline Target In Service Date																							March 2015
Number of Producer Shippers With Negotiated Rate Structure																							2	2