CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Operating Revenues:
Gas Utility	$ 776.7	$ 790.6	$ 1,350.5	$ 1,332.5
Gas Marketing and other	26.8	22.8	55.0	42.7
Total Operating Revenues	803.5	813.4	1,405.5	1,375.2
Gas Utility
Natural and propane gas	337.4	383.7	589.1	624.5
Other operation and maintenance expenses	109.5	135.3	212.0	234.3
Depreciation and amortization	44.4	41.1	88.1	81.4
Taxes, other than income taxes	57.4	58.0	96.6	94.7
Total Gas Utility Operating Expenses	548.7	618.1	985.8	1,034.9
Gas Marketing and other	45.3	45.2	105.1	86.2
Total Operating Expenses	594.0	663.3	1,090.9	1,121.1
Operating Income	209.5	150.1	314.6	254.1
Other Income (Expense), Net	6.1	(7.6)	8.9	(4.3)
Interest Charges:
Interest on long-term debt	21.5	21.0	41.9	41.7
Other interest charges	6.1	4.4	11.6	8.1
Total Interest Charges	27.6	25.4	53.5	49.8
Income Before Income Taxes	188.0	117.1	270.0	200.0
Income Tax Expense (Benefit)	33.4	18.9	48.1	(14.2)
Net Income (Loss)	$ 154.6	$ 98.2	$ 221.9	$ 214.2
Weighted Average Number of Shares Outstanding:
Basic	50.6	48.2	50.6	48.2
Diluted	50.8	48.4	50.8	48.4
Basic Earnings Per Share	$ 3.05	$ 2.03	$ 4.37	$ 4.43
Diluted Earnings Per Share	$ 3.04	$ 2.03	$ 4.36	$ 4.42
Spire Alabama
Operating Revenues:
Gas Utility	$ 180.4	$ 218.3	$ 313.9	$ 339.1
Total Operating Revenues	180.4	218.3	313.9	339.1
Gas Utility
Natural and propane gas	41.1	78.5	100.6	127.5
Other operation and maintenance expenses	33.4	35.2	67.8	68.0
Depreciation and amortization	13.7	13.1	27.3	25.9
Taxes, other than income taxes	12.6	14.4	21.5	22.6
Total Operating Expenses	100.8	141.2	217.2	244.0
Operating Income	79.6	77.1	96.7	95.1
Other Income (Expense), Net	1.5	1.6	3.3	3.0
Interest Charges:
Interest on long-term debt	4.4	3.5	8.0	6.4
Other interest charges	1.0	0.9	2.5	2.0
Total Interest Charges	5.4	4.4	10.5	8.4
Income Before Income Taxes	75.7	74.3	89.5	89.7
Income Tax Expense (Benefit)	19.0	18.7	22.5	83.7
Net Income (Loss)	$ 56.7	$ 55.6	$ 67.0	$ 6.0