CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating Revenues:
Gas Utility	$ 334.8	$ 305.1	$ 1,667.3	$ 1,419.1
Gas Marketing and other	15.8	18.4	58.5	62.9
Total Operating Revenues	350.6	323.5	1,725.8	1,482.0
Gas Utility
Natural and propane gas	107.2	76.7	731.7	524.8
Operation and maintenance	105.6	100.8	347.1	298.6
Depreciation and amortization	40.5	38.4	121.9	114.0
Taxes, other than income taxes	33.5	30.5	128.2	112.2
Total Gas Utility Operating Expenses	286.8	246.4	1,328.9	1,049.6
Gas Marketing and other	11.4	26.8	97.6	112.6
Total Operating Expenses	298.2	273.2	1,426.5	1,162.2
Operating Income	52.4	50.3	299.3	319.8
Other Income - Net	3.4	1.5	6.3	5.6
Interest Charges:
Interest on long-term debt	20.8	19.0	62.5	57.3
Other interest charges	3.4	2.4	11.5	8.9
Total Interest Charges	24.2	21.4	74.0	66.2
Income Before Income Taxes	31.6	30.4	231.6	259.2
Income Tax Expense (Benefit)	5.7	8.7	(8.5)	84.3
Net Income	$ 25.9	$ 21.7	$ 240.1	$ 174.9
Weighted Average Number of Shares Outstanding:
Basic (in shares)	49.6	48.1	48.7	46.4
Diluted (in shares)	49.7	48.2	48.8	46.6
Basic Earnings Per Share (in dollars per share)	$ 0.52	$ 0.45	$ 4.92	$ 3.76
Diluted Earnings Per Share (in dollars per share)	0.52	0.45	4.91	3.75
Dividends Declared Per Share (in dollars per share)	$ 0.5625	$ 0.525	$ 1.6875	$ 1.575
Spire Missouri
Operating Revenues:
Gas Utility	$ 215.5	$ 198.5	$ 1,141.0	$ 1,009.3
Total Operating Revenues	215.5	198.5	1,141.0	1,009.3
Gas Utility
Natural and propane gas	81.1	61.9	598.5	494.4
Operation and maintenance	65.5	61.2	229.3	179.2
Depreciation and amortization	24.2	23.2	74.2	68.9
Taxes, other than income taxes	23.7	21.7	91.1	81.6
Total Operating Expenses	194.5	168.0	993.1	824.1
Operating Income	21.0	30.5	147.9	185.2
Other Income - Net	2.0	0.7	2.8	2.7
Interest Charges:
Interest on long-term debt	9.6	8.0	29.3	24.5
Other interest charges	1.7	1.5	5.5	4.4
Total Interest Charges	11.3	9.5	34.8	28.9
Income Before Income Taxes	11.7	21.7	115.9	159.0
Income Tax Expense (Benefit)	0.2	6.2	(23.4)	48.5
Net Income	11.5	15.5	139.3	110.5
Spire Alabama
Operating Revenues:
Gas Utility	100.3	90.5	439.4	336.0
Total Operating Revenues	100.3	90.5	439.4	336.0
Gas Utility
Natural and propane gas	32.2	22.5	159.7	65.1
Operation and maintenance	34.2	32.9	100.1	95.6
Depreciation and amortization	13.5	12.6	39.4	37.2
Taxes, other than income taxes	8.1	7.0	30.7	23.9
Total Operating Expenses	88.0	75.0	329.9	221.8
Operating Income	12.3	15.5	109.5	114.2
Other Income - Net	0.5	0.6	1.4	2.1
Interest Charges:
Interest on long-term debt	3.6	2.8	10.0	8.4
Other interest charges	0.8	0.8	2.8	2.3
Total Interest Charges	4.4	3.6	12.8	10.7
Income Before Income Taxes	8.4	12.5	98.1	105.6
Income Tax Expense (Benefit)	2.1	5.1	85.8	40.3
Net Income	$ 6.3	$ 7.4	$ 12.3	$ 65.3