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v3.20.2

Information by Operating Segment (Tables) | 12 Months Ended
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Sep. 30, 2020
Segment Reporting [Abstract] |
Schedule of Operating Segment Information |
2020 |  | Gas Utility |  |  | Gas Marketing |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 1,751.8 |  |  | $ | 87.9 |  |  | $ | 15.7 |  |  | $ | — |  |  | $ | 1,855.4 |
Intersegment revenues |  |  | 0.2 |  |  |  | — |  |  |  | 42.1 |  |  |  | (42.3 | ) |  |  | — |
Total Operating Revenues |  |  | 1,752.0 |  |  |  | 87.9 |  |  |  | 57.8 |  |  |  | (42.3 | ) |  |  | 1,855.4 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas |  |  | 660.2 |  |  |  | 65.1 |  |  |  | 0.4 |  |  |  | (29.6 | ) |  |  | 696.1 |
Other operation and maintenance |  |  | 421.3 |  |  |  | 11.8 |  |  |  | 38.2 |  |  |  | (12.7 | ) |  |  | 458.6 |
Depreciation and amortization |  |  | 189.7 |  |  |  | 0.6 |  |  |  | 7.0 |  |  |  | — |  |  |  | 197.3 |
Taxes, other than income taxes |  |  | 146.5 |  |  |  | 1.1 |  |  |  | 0.8 |  |  |  | — |  |  |  | 148.4 |
Impairments |  |  | — |  |  |  | — |  |  |  | 148.6 |  |  |  | — |  |  |  | 148.6 |
Total Operating Expenses |  |  | 1,417.7 |  |  |  | 78.6 |  |  |  | 195.0 |  |  |  | (42.3 | ) |  |  | 1,649.0 |
Operating Income (Loss) |  | $ | 334.3 |  |  | $ | 9.3 |  |  | $ | (137.2 | ) |  | $ | — |  |  | $ | 206.4 |
Net Economic Earnings (Loss) |  | $ | 213.4 |  |  | $ | 9.1 |  |  | $ | (14.7 | ) |  | $ | — |  |  | $ | 207.8 |
Capital Expenditures |  | $ | 547.8 |  |  | $ | 3.6 |  |  | $ | 87.0 |  |  | $ | — |  |  | $ | 638.4 |
2019 |  | Gas Utility |  |  | Gas Marketing |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 1,859.2 |  |  | $ | 83.7 |  |  | $ | 9.5 |  |  | $ | — |  |  | $ | 1,952.4 |
Intersegment revenues |  |  | 1.6 |  |  |  | — |  |  |  | 12.0 |  |  |  | (13.6 | ) |  |  | — |
Total Operating Revenues |  |  | 1,860.8 |  |  |  | 83.7 |  |  |  | 21.5 |  |  |  | (13.6 | ) |  |  | 1,952.4 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas |  |  | 794.6 |  |  |  | 47.9 |  |  |  | 0.5 |  |  |  | (2.7 | ) |  |  | 840.3 |
Other operation and maintenance |  |  | 441.7 |  |  |  | 11.7 |  |  |  | 31.6 |  |  |  | (10.9 | ) |  |  | 474.1 |
Depreciation and amortization |  |  | 179.4 |  |  |  | 0.1 |  |  |  | 2.2 |  |  |  | — |  |  |  | 181.7 |
Taxes, other than income taxes |  |  | 151.7 |  |  |  | 0.8 |  |  |  | 1.5 |  |  |  | — |  |  |  | 154.0 |
Total Operating Expenses |  |  | 1,567.4 |  |  |  | 60.5 |  |  |  | 35.8 |  |  |  | (13.6 | ) |  |  | 1,650.1 |
Operating Income (Loss) |  | $ | 293.4 |  |  | $ | 23.2 |  |  | $ | (14.3 | ) |  | $ | — |  |  | $ | 302.3 |
Net Economic Earnings (Loss) |  | $ | 199.8 |  |  | $ | 19.4 |  |  | $ | (24.1 | ) |  | $ | — |  |  | $ | 195.1 |
Capital Expenditures |  | $ | 565.4 |  |  | $ | 3.1 |  |  | $ | 254.8 |  |  | $ | — |  |  | $ | 823.3 |
2018 |  | Gas Utility |  |  | Gas Marketing |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 1,888.0 |  |  | $ | 71.6 |  |  | $ | 5.4 |  |  | $ | — |  |  | $ | 1,965.0 |
Intersegment revenues |  |  | 0.4 |  |  |  | — |  |  |  | 11.1 |  |  |  | (11.5 | ) |  |  | — |
Total Operating Revenues |  |  | 1,888.4 |  |  |  | 71.6 |  |  |  | 16.5 |  |  |  | (11.5 | ) |  |  | 1,965.0 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Natural gas |  |  | 842.6 |  |  |  | 30.2 |  |  |  | 0.3 |  |  |  | (1.4 | ) |  |  | 871.7 |
Other operation and maintenance |  |  | 449.7 |  |  |  | 7.4 |  |  |  | 30.3 |  |  |  | (10.1 | ) |  |  | 477.3 |
Depreciation and amortization |  |  | 167.0 |  |  |  | — |  |  |  | 1.4 |  |  |  | — |  |  |  | 168.4 |
Taxes, other than income taxes |  |  | 152.5 |  |  |  | 0.2 |  |  |  | 0.8 |  |  |  | — |  |  |  | 153.5 |
Total Operating Expenses |  |  | 1,611.8 |  |  |  | 37.8 |  |  |  | 32.8 |  |  |  | (11.5 | ) |  |  | 1,670.9 |
Operating Income (Loss) |  | $ | 276.6 |  |  | $ | 33.8 |  |  | $ | (16.3 | ) |  | $ | — |  |  | $ | 294.1 |
Net Economic Earnings (Loss) |  | $ | 183.1 |  |  | $ | 22.9 |  |  | $ | (22.3 | ) |  | $ | — |  |  | $ | 183.7 |
Capital Expenditures |  | $ | 457.7 |  |  | $ | — |  |  | $ | 41.7 |  |  | $ | — |  |  | $ | 499.4 |
Total Assets at End of Year |  | 2020 |  |  | 2019 |  |  | 2018 |
Gas Utility |  | $ | 6,716.2 |  |  | $ | 6,094.6 |  |  | $ | 5,606.7 |
Gas Marketing |  |  | 182.7 |  |  |  | 212.3 |  |  |  | 295.3 |
Other |  |  | 2,443.5 |  |  |  | 2,692.7 |  |  |  | 2,508.0 |
Eliminations |  |  | (1,101.2 | ) |  |  | (1,380.4 | ) |  |  | (1,566.4 | )
Total Assets |  | $ | 8,241.2 |  |  | $ | 7,619.2 |  |  | $ | 6,843.6 |
Schedule of Reconciliation of Consolidated Net Economic Earnings to Consolidated Net Income |
Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings |  | 2020 |  |  | 2019 |  |  | 2018 |
Net Income |  | $ | 88.6 |  |  | $ | 184.6 |  |  | $ | 214.2 |
Adjustments, pre-tax: |  |  |  |  |  |  |  |  |  |  |  |
Impairments |  | 148.6 |  |  |  | — |  |  |  | — |
Provision for ISRS rulings |  |  | — |  |  |  | 12.2 |  |  |  | — |
Missouri regulatory adjustments |  |  | — |  |  |  | — |  |  |  | 30.6 |
Fair value and timing adjustments |  |  | 2.5 |  |  |  | 1.2 |  |  |  | (4.3 | )
Acquisition, divestiture and restructuring activities |  |  | — |  |  |  | 0.4 |  |  |  | 13.6 |
Income tax effect of adjustments |  |  | (31.9 | ) |  |  | (3.3 | ) |  |  | (10.3 | )
Effect of the Tax Cuts and Jobs Act |  |  | — |  |  |  | — |  |  |  | (60.1 | )
Net Economic Earnings |  | $ | 207.8 |  |  | $ | 195.1 |  |  | $ | 183.7 |

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