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Commitments and Contingencies | 9 Months Ended
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Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Litigation and Environmental Matters With respect to the specific litigation and environmental-related matters or claims that were disclosed in Note 11 of our Fiscal 2016 Financial Statements, there were no material changes in the status of such litigation and environmental-related matters or claims during the nine months ended June 30, 2017. We are a party to various litigation and environmental-related matters or claims that have arisen in the ordinary course of our business. While the results of such litigation and response actions to such environmental-related matters or claims cannot be predicted with certainty, we continue to believe the final outcome of such litigation and matters or claims will not have a material adverse effect on our financial condition, results of operations or cash flows. Purchase Commitments Our distribution divisions maintain supply contracts with several vendors that generally cover a period of up to one year. Commitments for estimated base gas volumes are established under these contracts on a monthly basis at contractually negotiated prices. Commitments for incremental daily purchases are made as necessary during the month in accordance with the terms of the individual contract. Our Mid-Tex Division also maintains a limited number of long-term supply contracts to ensure a reliable source of gas for our customers in its service area, which obligate it to purchase specified volumes at prices indexed to natural gas hubs. At June 30, 2017, we were committed to purchase 53.2 Bcf within one year, 37.6 Bcf within two to three years and 0.4 Bcf beyond three years under indexed contracts. Regulatory Matters Various regulatory agencies, including the SEC and the Commodities Futures Trading Commission, continue to adopt regulations implementing many of the provisions of the Dodd-Frank Act of 2010. We continue to enact new procedures and modify existing business practices and contractual arrangements to comply with such regulations. Additional rulemakings are pending which we believe will result in new reporting and disclosure obligations. The costs associated with hedging certain risks inherent in our business may be further increased when these expected additional regulations are adopted. As of June 30, 2017, formula rate mechanisms were pending regulatory approval in our Louisiana service area, infrastructure mechanisms were pending regulatory approval in our Mississippi and Virginia service areas and rate cases were pending regulatory approval in our Colorado service area and Texas service area related to APT. These regulatory proceedings are discussed in further detail below in Management’s Discussion and Analysis — Recent Ratemaking Developments.

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