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CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Operating Revenues: |  |  |
Gas Utility | $ 1,660.0 | $ 1,457.2 | $ 1,891.8
Gas Marketing and other | 80.7 | 80.1 | 84.6
Total Operating Revenues | 1,740.7 | 1,537.3 | 1,976.4
Gas Utility |  |  |
Natural and propane gas | 570.5 | 492.2 | 882.4
Other operation and maintenance expenses | 405.0 | 377.5 | 390.6
Depreciation and amortization | 153.5 | 136.9 | 129.9
Taxes, other than income taxes | 137.8 | 125.2 | 142.1
Total Gas Utility Operating Expenses | 1,266.8 | 1,131.8 | 1,545.0
Gas Marketing and other | 152.2 | 123.2 | 158.9
Total Operating Expenses | 1,419.0 | 1,255.0 | 1,703.9
Operating Income | 321.7 | 282.3 | 272.5
Other Income – Net | 6.6 | 8.6 | 1.2
Interest Charges: |  |  |
Interest on long-term debt | 76.8 | 67.6 | 66.6
Other interest charges | 12.3 | 9.6 | 8.0
Total Interest Charges | 89.1 | 77.2 | 74.6
Income Before Income Taxes | 239.2 | 213.7 | 199.1
Income Tax Expense | 77.6 | 69.5 | 62.2
Net Income | $ 161.6 | $ 144.2 | $ 136.9
Weighted Average Number of Common Shares Outstanding: |  |  |
Basic (in shares) | 46.9 | 44.1 | 43.2
Diluted (in shares) | 47.0 | 44.3 | 43.3
Basic Earnings Per Share of Common Stock (in dollars per share) | $ 3.44 | $ 3.26 | $ 3.16
Diluted Earnings Per Share of Common Stock (in dollars per share) | $ 3.43 | $ 3.24 | $ 3.16
Spire Missouri |  |  |
Operating Revenues: |  |  |
Gas Utility | $ 1,171.9 | $ 1,087.5 | $ 1,416.6
Total Operating Revenues | 1,171.9 | 1,087.5 | 1,416.6
Gas Utility |  |  |
Natural and propane gas | 538.3 | 471.3 | 786.1
Other operation and maintenance expenses | 243.8 | 244.4 | 253.6
Depreciation and amortization | 93.1 | 88.6 | 82.6
Taxes, other than income taxes | 99.8 | 96.3 | 108.9
Total Operating Expenses | 975.0 | 900.6 | 1,231.2
Operating Income | 196.9 | 186.9 | 185.4
Other Income – Net | 2.7 | 1.8 | (0.5)
Interest Charges: |  |  |
Interest on long-term debt | 32.9 | 32.9 | 33.1
Other interest charges | 6.2 | 4.5 | 3.3
Total Interest Charges | 39.1 | 37.4 | 36.4
Income Before Income Taxes | 160.5 | 151.3 | 148.5
Income Tax Expense | 47.5 | 45.4 | 43.2
Net Income | 113.0 | 105.9 | 105.3
Spire Alabama |  |  |
Operating Revenues: |  |  |
Gas Utility | 400.5 | 368.5 | 479.2
Total Operating Revenues | 400.5 | 368.5 | 479.2
Gas Utility |  |  |
Natural and propane gas | 84.5 | 67.3 | 171.5
Other operation and maintenance expenses | 130.4 | 133.5 | 138.0
Depreciation and amortization | 49.9 | 47.8 | 47.3
Taxes, other than income taxes | 29.9 | 28.4 | 33.2
Total Operating Expenses | 294.7 | 277.0 | 390.0
Operating Income | 105.8 | 91.5 | 89.2
Other Income – Net | 2.5 | 7.9 | 2.0
Interest Charges: |  |  |
Interest on long-term debt | 11.2 | 11.4 | 11.6
Other interest charges | 3.2 | 2.4 | 2.3
Total Interest Charges | 14.4 | 13.8 | 13.9
Income Before Income Taxes | 93.9 | 85.6 | 77.3
Income Tax Expense | 35.8 | 32.4 | 29.3
Net Income | $ 58.1 | $ 53.2 | $ 48.0

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