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FAIR VALUE MEASUREMENTS | 12 Months Ended
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Sep. 30, 2014
Fair Value Disclosures [Abstract] |
FAIR VALUE MEASUREMENTS | FAIR VALUE MEASUREMENTS Laclede Group The following table categorizes the assets and liabilities in the Consolidated Balance Sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.
($ Millions) | Quoted Prices in Active Markets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Effects of Netting and Cash Margin Receivables /Payables |  | Total
As of September 30, 2014 |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |
Gas Utility |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 15.7 |  |  | $ | 3.9 |  |  | $ | — |  |  | $ | — |  |  | $ | 19.6 |
NYMEX natural gas contracts | 2.4 |  |  | — |  |  | — |  |  | (2.4 | ) |  | — |
OTCBB natural gas contracts | — |  |  | 0.1 |  |  | — |  |  | (0.1 | ) |  | — |
Gasoline and heating oil contracts | — |  |  | — |  |  | — |  |  | — |  |  | — |
Subtotal | 18.1 |  |  | 4.0 |  |  | — |  |  | (2.5 | ) |  | 19.6 |
Gas Marketing |  |  |  |  |  |  |  |  |
NYMEX natural gas contracts | 1.0 |  |  | 1.2 |  |  | — |  |  | (1.8 | ) |  | 0.4 |
Natural gas commodity contracts | — |  |  | 2.7 |  |  | 0.2 |  |  | (0.2 | ) |  | 2.7 |
Total | $ | 19.1 |  |  | $ | 7.9 |  |  | $ | 0.2 |  |  | $ | (4.5 | ) |  | $ | 22.7 |
LIABILITIES |  |  |  |  |  |  |  |  |
Gas Utility |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts | $ | 5.2 |  |  | $ | — |  |  | $ | — |  |  | $ | (5.2 | ) |  | $ | — |
OTCBB natural gas contracts | — |  |  | 4.1 |  |  | — |  |  | (0.1 | ) |  | 4.0 |
NYMEX gasoline and heating oil contracts | 0.2 |  |  | — |  |  | — |  |  | (0.2 | ) |  | — |
Subtotal | 5.4 |  |  | 4.1 |  |  | — |  |  | (5.5 | ) |  | 4.0 |
Gas Marketing |  |  |  |  |  |  |  |  |
NYMEX natural gas contracts | 1.1 |  |  | 0.7 |  |  | — |  |  | (1.8 | ) |  | — |
Natural gas commodity contracts | — |  |  | 0.7 |  |  | — |  |  | (0.2 | ) |  | 0.5 |
Total | $ | 6.5 |  |  | $ | 5.5 |  |  | $ | — |  |  | $ | (7.5 | ) |  | $ | 4.5 |
As of September 30, 2013 |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |
Gas Utility |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 14.5 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 14.5 |
NYMEX natural gas contracts | 1.5 |  |  | — |  |  | — |  |  | (1.5 | ) |  | — |
OTCBB natural gas contracts | — |  |  | 0.2 |  |  | — |  |  | (0.2 | ) |  | — |
Gasoline and heating oil contracts | 0.1 |  |  | — |  |  | — |  |  | (0.1 | ) |  | — |
Subtotal | 16.1 |  |  | 0.2 |  |  | — |  |  | (1.8 | ) |  | 14.5 |
Gas Marketing |  |  |  |  |  |  |  |  |
Natural gas contracts | 2.8 |  |  | 1.5 |  |  | 0.2 |  |  | (1.2 | ) |  | 3.3 |
Total | $ | 18.9 |  |  | $ | 1.7 |  |  | $ | 0.2 |  |  | $ | (3.0 | ) |  | $ | 17.8 |
LIABILITIES |  |  |  |  |  |  |  |  |
Gas Utility |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts | $ | 3.5 |  |  | $ | — |  |  |  |  | $ | (3.5 | ) |  | $ | — |
OTCBB natural gas contracts | — |  |  | 5.4 |  |  | — |  |  | (0.2 | ) |  | 5.2 |
Subtotal | 3.5 |  |  | 5.4 |  |  | — |  |  | (3.7 | ) |  | 5.2 |
Gas Marketing |  |  |  |  |  |  |  |  |
Natural gas contracts | 0.2 |  |  | 1.5 |  |  | — |  |  | (1.0 | ) |  | 0.7 |
Total | $ | 3.7 |  |  | $ | 6.9 |  |  | $ | — |  |  | $ | (4.7 | ) |  | $ | 5.9 |
The mutual funds included in Level 1 are valued based on exchange-quoted market prices of identical securities. Derivative instruments included in Level 1 are valued using quoted market prices on the NYMEX. Derivative instruments classified in Level 2 include physical commodity derivatives that are valued using Over The Counter Bulletin Board (OTCBB), broker, or dealer quotation services whose prices are derived principally from, or are corroborated by, observable market inputs. Also included in Level 2 are certain derivative instruments that have values that are similar to, and correlate with, quoted prices for exchange-traded instruments in active markets. Derivative instruments included in Level 3 are valued using generally unobservable inputs that are based upon the best information available and reflect management’s assumptions about how market participants would price the asset or liability. The Company’s policy is to recognize transfers between the levels of the fair value hierarchy, if any, as of the beginning of the interim reporting period in which circumstances change or events occur to cause the transfer. There were no material level 3 beginning and ending net derivative balances for the Company. The mutual funds are included in the Other investments line of the Consolidated Balance Sheets. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net in the Consolidated Balance Sheets when a legally enforceable netting agreement exists between the Company and the counterparty to a derivative contract. For additional information on derivative instruments, see Note 10, Derivative Instruments and Hedging Activities. Laclede Gas The following table categorizes the assets and liabilities in the Balance Sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.
($ Millions) | Quoted Prices in Active Markets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Effects of Netting and Cash Margin Receivables /Payables |  | Total
As of September 30, 2014 |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 15.7 |  |  | $ | 3.9 |  |  | $ | — |  |  | $ | — |  |  | $ | 19.6 |
NYMEX natural gas contracts | 2.4 |  |  | — |  |  | — |  |  | (2.4 | ) |  | — |
OTCBB natural gas contracts | — |  |  | 0.1 |  |  | — |  |  | (0.1 | ) |  | — |
Total | $ | 18.1 |  |  | $ | 4.0 |  |  | $ | — |  |  | $ | (2.5 | ) |  | $ | 19.6 |
LIABILITIES |  |  |  |  |  |  |  |  |
NYMEX natural gas contracts | 5.2 |  |  | — |  |  | — |  |  | (5.2 | ) |  | $ | — |
OTCBB natural gas contracts | — |  |  | 4.1 |  |  | — |  |  | (0.1 | ) |  | 4.0 |
Gasoline and heating oil contracts | $ | 0.2 |  |  | $ | — |  |  | $ | — |  |  | $ | (0.2 | ) |  | $ | — |
Total | $ | 5.4 |  |  | $ | 4.1 |  |  | $ | — |  |  | $ | (5.5 | ) |  | $ | 4.0 |
As of September 30, 2013 |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 14.5 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 14.5 |
NYMEX natural gas contracts | 1.5 |  |  | — |  |  | — |  |  | (1.5 | ) |  | — |
OTCBB natural gas contracts | — |  |  | 0.2 |  |  | — |  |  | (0.2 | ) |  | — |
Gasoline and heating oil contracts | 0.1 |  |  | — |  |  | — |  |  | (0.1 | ) |  | — |
Total | $ | 16.1 |  |  | $ | 0.2 |  |  | $ | — |  |  | $ | (1.8 | ) |  | $ | 14.5 |
LIABILITIES |  |  |  |  |  |  |  |  |
NYMEX Natural gas contracts | 3.5 |  |  | — |  |  | — |  |  | (3.5 | ) |  | — |
OTCBB natural gas contracts | — |  |  | 5.4 |  |  | — |  |  | (0.2 | ) |  | 5.2 |
Total | $ | 3.5 |  |  | $ | 5.4 |  |  | $ | — |  |  | $ | (3.7 | ) |  | $ | 5.2 |
The mutual funds included in Level 1 are valued based on exchange-quoted market prices of identical securities. Derivative instruments included in Level 1 are valued using quoted market prices on the New York Mercantile Exchange (NYMEX). Derivative instruments classified in Level 2 include physical commodity derivatives that are valued using Over The Counter Bulletin Board (OTCBB), broker, or dealer quotation services whose prices are derived principally from, or are corroborated by, observable market inputs. Laclede Gas' policy is to recognize transfers between the levels of the fair value hierarchy, if any, as of the beginning of the interim reporting period in which circumstances change or events occur to cause the transfer. The mutual funds are included in the Other investments line of the Balance Sheets. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net in the Balance Sheets when a legally enforceable netting agreement exists between Laclede Gas and the counterparty to a derivative contract. For additional information on derivative instruments, see Note 10, Derivative Instruments and Hedging Activities.

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- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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