CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating Revenues:
Gas Utility	$ 305.7	$ 301.4	$ 1,515.4	$ 1,651.9
Gas Marketing and other	15.4	19.9	88.1	74.9
Total Operating Revenues	321.1	321.3	1,603.5	1,726.8
Gas Utility
Natural and propane gas	70.7	75.5	534.3	664.6
Other operation and maintenance expenses	112.5	111.2	311.6	323.2
Depreciation and amortization	47.8	45.1	141.2	133.2
Taxes, other than income taxes	31.7	29.7	121.3	126.3
Total Gas Utility Operating Expenses	262.7	261.5	1,108.4	1,247.3
Impairments	148.6	0.0	148.6	0.0
Gas Marketing and other	16.3	46.5	140.2	151.6
Total Operating Expenses	427.6	308.0	1,397.2	1,398.9
Operating (Loss) Income	(106.5)	13.3	206.3	327.9
Interest Expense, Net	26.4	25.6	80.3	79.1
Other Income (Expense), Net	13.0	6.4	(0.8)	15.3
(Loss) Income Before Income Taxes	(119.9)	(5.9)	125.2	264.1
Income Tax (Benefit) Expense	(27.6)	(2.9)	16.9	45.2
Net (Loss) Income	(92.3)	(3.0)	108.3	218.9
Provision for preferred dividends	3.7	1.6	11.1	1.6
(Loss) income allocated to participating securities	(0.1)		0.2	0.5
Net (Loss) Income Available to Common Shareholders	$ (95.9)	$ (4.6)	$ 97.0	$ 216.8
Weighted Average Number of Common Shares Outstanding:
Basic	51.2	50.7	51.1	50.6
Diluted	51.2	50.7	51.2	50.8
Basic (Loss) Earnings Per Common Share	$ (1.87)	$ (0.09)	$ 1.90	$ 4.28
Diluted (Loss) Earnings Per Common Share	$ (1.87)	$ (0.09)	$ 1.90	$ 4.27
Spire Alabama
Operating Revenues:
Gas Utility	$ 81.2	$ 90.8	$ 392.9	$ 404.7
Total Operating Revenues	81.2	90.8	392.9	404.7
Gas Utility
Natural and propane gas	17.3	20.0	103.7	120.6
Other operation and maintenance expenses	32.5	37.3	104.8	105.1
Depreciation and amortization	15.0	14.2	43.9	41.5
Taxes, other than income taxes	7.1	8.2	29.1	29.7
Total Operating Expenses	71.9	79.7	281.5	296.9
Operating (Loss) Income	9.3	11.1	111.4	107.8
Interest Expense, Net	5.1	5.5	15.8	16.0
Other Income (Expense), Net	0.8	1.9	4.2	5.2
(Loss) Income Before Income Taxes	5.0	7.5	99.8	97.0
Income Tax (Benefit) Expense	1.4	1.9	25.2	24.4
Net (Loss) Income	$ 3.6	$ 5.6	$ 74.6	$ 72.6