CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating Revenues:
Gas Utility	$ 301.4	$ 334.8	$ 1,651.9	$ 1,667.3
Gas Marketing and other	19.9	15.8	74.9	58.5
Total Operating Revenues	321.3	350.6	1,726.8	1,725.8
Gas Utility
Natural and propane gas	75.5	107.2	664.6	731.7
Other operation and maintenance expenses	111.2	99.1	323.2	333.4
Depreciation and amortization	45.1	40.5	133.2	121.9
Taxes, other than income taxes	29.7	33.5	126.3	128.2
Total Gas Utility Operating Expenses	261.5	280.3	1,247.3	1,315.2
Gas Marketing and other	46.5	11.4	151.6	97.6
Total Operating Expenses	308.0	291.7	1,398.9	1,412.8
Operating Income	13.3	58.9	327.9	313.0
Other Income (Expense), Net	6.4	(3.1)	15.3	(7.4)
Interest Charges:
Interest on long-term debt	20.5	20.8	62.4	62.5
Other interest charges	5.1	3.4	16.7	11.5
Total Interest Charges	25.6	24.2	79.1	74.0
(Loss) Income Before Income Taxes	(5.9)	31.6	264.1	231.6
Income Tax (Benefit) Expense	(2.9)	5.7	45.2	(8.5)
Net (Loss) Income	(3.0)	25.9	218.9	240.1
Provision for preferred dividends	1.6		1.6
Income allocated to participating securities		0.1	0.5	0.5
Net (Loss) Income Available to Common Shareholders	$ (4.6)	$ 25.8	$ 216.8	$ 239.6
Weighted Average Number of Common Shares Outstanding:
Basic	50.7	49.6	50.6	48.7
Diluted	50.9	49.7	50.8	48.8
Basic (Loss) Earnings Per Common Share	$ (0.09)	$ 0.52	$ 4.28	$ 4.92
Diluted (Loss) Earnings Per Common Share	$ (0.09)	$ 0.52	$ 4.27	$ 4.91
Spire Alabama
Operating Revenues:
Gas Utility	$ 90.8	$ 100.3	$ 404.7	$ 439.4
Total Operating Revenues	90.8	100.3	404.7	439.4
Gas Utility
Natural and propane gas	20.0	32.2	120.6	159.7
Other operation and maintenance expenses	37.3	33.2	105.1	101.2
Depreciation and amortization	14.2	13.5	41.5	39.4
Taxes, other than income taxes	8.2	8.1	29.7	30.7
Total Operating Expenses	79.7	87.0	296.9	331.0
Operating Income	11.1	13.3	107.8	108.4
Other Income (Expense), Net	1.9	(0.5)	5.2	2.5
Interest Charges:
Interest on long-term debt	4.6	3.6	12.6	10.0
Other interest charges	0.9	0.8	3.4	2.8
Total Interest Charges	5.5	4.4	16.0	12.8
(Loss) Income Before Income Taxes	7.5	8.4	97.0	98.1
Income Tax (Benefit) Expense	1.9	2.1	24.4	85.8
Net (Loss) Income	$ 5.6	$ 6.3	$ 72.6	$ 12.3