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Proceeds from dividend from interest in joint venture.

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No definition available.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

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-Section 50

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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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-Publisher FASB

-Name Accounting Standards Codification

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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- Definition

Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination.

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No definition available.

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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-Publisher FASB

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The percentage rate used to calculate dividend payments on preferred stock.

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The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer.

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Acquisition of NHUMO - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Oct. 31, 2013	Sep. 30, 2014	Nov. 30, 2013
Loans At Acquisition Date [Line Items]
Preferred stock redemption amount		$ 28us-gaap_PreferredStockRedemptionAmount		$ 27us-gaap_PreferredStockRedemptionAmount
Gain on acquisition	29
Customer Relationships [Member]
Loans At Acquisition Date [Line Items]
Intangible asset		63
Amortized period		20 years
NHUMO [Member]
Loans At Acquisition Date [Line Items]
Percentage acquisition					60.00%
Ownership percentage prior to acquisition					40.00%
Cash paid on acquisition			80
Preferred stock redemption amount			28
Dividend percentage of preferred stock			6.00%
Preferred stock issued on acquisition			25
Dividend payment			1.5
Dividend received from NHUMO			14
Gain on acquisition		29
Previously held equity interest in NHUMO		54	54
NHUMO [Member] \| Carrying Value [Member]
Loans At Acquisition Date [Line Items]
Preferred stock redemption amount			$ 25