CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating Revenues:
Gas Utility	$ 305.1	$ 253.2	$ 1,419.1	$ 1,263.5
Gas Marketing and other	18.4	(3.9)	62.9	(5.5)
Total Operating Revenues	323.5	249.3	1,482.0	1,258.0
Gas Utility
Natural and propane gas	76.7	54.1	524.8	463.7
Operation and maintenance	100.8	91.8	298.6	277.7
Depreciation and amortization	38.4	34.2	114.0	101.5
Taxes, other than income taxes	30.5	27.4	112.2	99.5
Total Gas Utility Operating Expenses	246.4	207.5	1,049.6	942.4
Gas Marketing and other	26.8	6.5	112.6	25.6
Total Operating Expenses	273.2	214.0	1,162.2	968.0
Operating Income	50.3	35.3	319.8	290.0
Other Income	1.5	1.6	5.6	3.8
Interest Charges:
Interest on long-term debt	19.0	16.6	57.3	50.2
Other interest charges	2.4	2.8	8.9	7.5
Total Interest Charges	21.4	19.4	66.2	57.7
Income Before Income Taxes	30.4	17.5	259.2	236.1
Income Tax Expense	8.7	6.8	84.3	77.7
Net Income	$ 21.7	$ 10.7	$ 174.9	$ 158.4
Weighted Average Number of Common Shares Outstanding:
Basic (in shares)	48.1	44.4	46.4	43.6
Diluted (in shares)	48.2	44.6	46.6	43.8
Basic Earnings Per Share of Common Stock (in dollars per share)	$ 0.45	$ 0.24	$ 3.76	$ 3.62
Diluted Earnings Per Share of Common Stock (in dollars per share)	0.45	0.24	3.75	3.60
Dividends Declared Per Share of Common Stock (in dollars per share)	$ 0.53	$ 0.49	$ 1.58	$ 1.47
Laclede Gas
Operating Revenues:
Gas Utility	$ 198.5	$ 179.3	$ 1,009.3	$ 943.2
Total Operating Revenues	198.5	179.3	1,009.3	943.2
Gas Utility
Natural and propane gas	61.9	48.0	494.4	440.6
Operation and maintenance	61.2	58.4	179.2	178.7
Depreciation and amortization	23.2	22.3	68.9	66.0
Taxes, other than income taxes	21.7	21.2	81.6	76.4
Total Operating Expenses	168.0	149.9	824.1	761.7
Operating Income	30.5	29.4	185.2	181.5
Other Income	0.7	1.0	2.7	2.2
Interest Charges:
Interest on long-term debt	8.0	8.1	24.5	24.7
Other interest charges	1.5	1.0	4.4	3.2
Total Interest Charges	9.5	9.1	28.9	27.9
Income Before Income Taxes	21.7	21.3	159.0	155.8
Income Tax Expense	6.2	7.4	48.5	48.2
Net Income	15.5	13.9	110.5	107.6
Alagasco
Operating Revenues:
Gas Utility	90.5	74.0	336.0	322.3
Total Operating Revenues	90.5	74.0	336.0	322.3
Gas Utility
Natural and propane gas	22.5	13.1	65.1	55.4
Operation and maintenance	32.9	33.5	95.6	99.7
Depreciation and amortization	12.6	11.9	37.2	35.5
Taxes, other than income taxes	7.0	6.2	23.9	23.1
Total Operating Expenses	75.0	64.7	221.8	213.7
Operating Income	15.5	9.3	114.2	108.6
Other Income	0.6	0.5	2.1	1.5
Interest Charges:
Interest on long-term debt	2.8	2.8	8.4	8.5
Other interest charges	0.8	0.6	2.3	1.9
Total Interest Charges	3.6	3.4	10.7	10.4
Income Before Income Taxes	12.5	6.4	105.6	99.7
Income Tax Expense	5.1	2.4	40.3	37.7
Net Income	$ 7.4	$ 4.0	$ 65.3	$ 62.0