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Nature of Business (Tables) | 12 Months Ended
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Sep. 30, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Divisions and Service Areas | Through our distribution business, we deliver natural gas through sales and transportation arrangements to approximately 3.4 million residential, commercial, public-authority, and industrial customers through our six regulated distribution divisions in the service areas described below:
Division |  | Service Area
Atmos Energy Colorado-Kansas Division |  | Colorado, Kansas
Atmos Energy Kentucky/Mid-States Division |  | Kentucky, Tennessee, Virginia
Atmos Energy Louisiana Division |  | Louisiana
Atmos Energy Mid-Tex Division |  | Texas, including the Dallas/Fort Worth metropolitan area
Atmos Energy Mississippi Division |  | Mississippi
Atmos Energy West Texas Division |  | West Texas

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