CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
ASSETS
Utility Plant	$ 4,893.2	$ 4,793.6	$ 4,220.6
Less: Accumulated depreciation and amortization	1,561.4	1,506.4	1,267.3
Net Utility Plant	3,331.8	3,287.2	2,953.3
Non-utility Property (net of accumulated depreciation and amortization of $8.2, $8.1 and $7.7 at December 31, 2016, September 30, 2016, and December 31, 2015, respectively)	19.7	13.7	13.9
Goodwill	1,161.4	1,164.9	946.0
Other Property and Investments	61.9	62.1	60.8
Total Other Property and Investments	1,243.0	1,240.7	1,020.7
Current Assets:
Cash and cash equivalents	10.6	5.2	4.6
Accounts receivable:
Utility	310.4	127.8	224.7
Other	133.4	113.4	85.5
Allowance for doubtful accounts	(21.1)	(20.5)	(12.7)
Delayed customer billings	5.3	1.6	8.7
Inventories:
Natural gas	161.9	174.0	176.6
Propane gas	12.0	12.0	12.0
Materials and supplies	16.6	16.3	14.9
Natural gas receivable	8.4	9.7	20.1
Derivative instrument assets	18.7	11.4	4.3
Unamortized purchased gas adjustments	52.2	49.7	44.6
Other regulatory assets	82.3	44.2	31.7
Prepayments and other	24.9	24.8	21.0
Total Current Assets	815.6	569.6	636.0
Deferred Charges:
Regulatory assets	786.4	838.0	727.0
Other	133.3	128.9	61.8
Total Deferred Charges	919.7	966.9	788.8
Total Assets	6,310.1	6,064.4	5,398.8
Capitalization:
Common stock	45.7	45.6	43.4
Paid-in capital	1,175.7	1,175.9	1,038.7
Retained earnings	572.1	550.9	519.9
Accumulated other comprehensive income (loss)	3.2	(4.2)	(1.7)
Total Common Stock Equity	1,796.7	1,768.2	1,600.3
Long-term debt (less current portion)	1,821.3	1,820.7	1,838.9
Total Capitalization	3,618.0	3,588.9	3,439.2
Current Liabilities:
Current portion of long-term debt	250.0	250.0	0.0
Notes payable	506.4	398.7	377.1
Accounts payable	273.8	210.9	159.5
Advance customer billings	60.2	70.2	59.3
Wages and compensation accrued	29.6	39.8	25.4
Dividends payable	24.8	23.5	22.3
Customer deposits	35.7	34.9	33.0
Interest accrued	22.3	14.8	19.5
Taxes accrued	39.7	55.2	32.9
Deferred income taxes	0.0	0.0	7.4
Unamortized purchased gas adjustments	1.4	1.7	14.3
Other regulatory liabilities	42.8	28.9	41.5
Other	55.5	32.7	55.3
Total Current Liabilities	1,342.2	1,161.3	847.5
Deferred Credits and Other Liabilities:
Deferred income taxes	636.5	607.3	495.3
Pension and postretirement benefit costs	296.3	303.7	250.7
Asset retirement obligations	208.7	206.4	161.0
Regulatory liabilities	132.1	130.7	129.1
Other	76.3	66.1	76.0
Total Deferred Credits and Other Liabilities	1,349.9	1,314.2	1,112.1
Commitments and Contingencies
Total Capitalization and Liabilities	6,310.1	6,064.4	5,398.8
Laclede Gas
ASSETS
Utility Plant	2,794.7	2,718.5	2,580.6
Less: Accumulated depreciation and amortization	646.4	604.5	573.1
Net Utility Plant	2,148.3	2,114.0	2,007.5
Goodwill	210.2	210.2	210.2
Other Property and Investments	57.1	57.3	56.0
Total Other Property and Investments	267.3	267.5	266.2
Current Assets:
Cash and cash equivalents	4.0	2.1	1.3
Accounts receivable:
Utility	221.0	87.9	167.3
Other	12.2	11.4	24.6
Allowance for doubtful accounts	(17.1)	(16.1)	(8.7)
Receivables from associated companies	5.3	2.2	4.6
Delayed customer billings	5.3	1.6	8.7
Inventories:
Natural gas	118.2	127.3	125.5
Propane gas	12.0	12.0	12.0
Materials and supplies	9.3	9.2	9.3
Derivative instrument assets	2.2	4.9	0.0
Unamortized purchased gas adjustments	33.8	43.1	44.6
Other regulatory assets	59.7	23.9	20.9
Prepayments and other	15.5	14.5	12.8
Total Current Assets	481.4	324.0	422.9
Deferred Charges:
Regulatory assets	543.4	589.8	563.9
Other	2.4	1.1	6.4
Total Deferred Charges	545.8	590.9	570.3
Total Assets	3,442.8	3,296.4	3,266.9
Capitalization:
Paid-in capital and common stock	753.1	752.0	749.5
Retained earnings	341.6	318.3	309.4
Accumulated other comprehensive income (loss)	(1.6)	(1.8)	(1.6)
Total Common Stock Equity	1,093.1	1,068.5	1,057.3
Long-term debt (less current portion)	804.3	804.1	803.6
Total Capitalization	1,897.4	1,872.6	1,860.9
Current Liabilities:
Notes payable	312.9	243.7	274.1
Accounts payable	104.3	67.6	64.6
Accounts payable – associated companies	9.4	5.4	4.5
Advance customer billings	38.8	49.1	36.8
Wages and compensation accrued	22.1	29.9	19.7
Dividends payable	14.7	14.0	21.2
Customer deposits	13.6	13.5	13.0
Interest accrued	9.5	7.7	9.4
Taxes accrued	16.4	29.1	10.2
Deferred income taxes	0.0	0.0	12.3
Other regulatory liabilities	2.7	1.3	1.1
Other	35.2	9.9	37.9
Total Current Liabilities	579.6	471.2	504.8
Deferred Credits and Other Liabilities:
Deferred income taxes	578.2	556.9	493.5
Pension and postretirement benefit costs	202.8	211.8	204.2
Asset retirement obligations	76.1	75.2	73.3
Regulatory liabilities	67.3	67.3	81.4
Other	41.4	41.4	48.8
Total Deferred Credits and Other Liabilities	965.8	952.6	901.2
Commitments and Contingencies
Total Capitalization and Liabilities	3,442.8	3,296.4	3,266.9
Alagasco
ASSETS
Utility Plant	1,750.2	1,729.6	1,640.0
Less: Accumulated depreciation and amortization	768.0	756.6	694.1
Net Utility Plant	982.2	973.0	945.9
Current Assets:
Cash and cash equivalents	0.0	0.0	0.1
Accounts receivable:
Utility	77.5	34.0	57.4
Other	6.1	7.2	5.9
Allowance for doubtful accounts	(2.4)	(3.3)	(4.0)
Inventories:
Natural gas	28.4	34.6	40.0
Materials and supplies	6.1	5.9	5.4
Unamortized purchased gas adjustments	17.1	5.6	0.0
Other regulatory assets	14.4	14.9	10.8
Deferred income taxes	0.0	0.0	5.7
Prepayments and other	5.4	5.1	4.2
Total Current Assets	152.6	104.0	125.5
Deferred Charges:
Regulatory assets	229.5	230.7	162.5
Deferred income taxes	215.1	221.4	242.8
Other	61.8	60.8	55.7
Total Deferred Charges	506.4	512.9	461.0
Total Assets	1,641.2	1,589.9	1,532.4
Capitalization:
Paid-in capital and common stock	451.9	451.9	471.9
Retained earnings	419.0	415.4	396.1
Total Common Stock Equity	870.9	867.3	868.0
Long-term debt (less current portion)	247.7	247.6	247.6
Total Capitalization	1,118.6	1,114.9	1,115.6
Current Liabilities:
Notes payable	102.5	82.0	43.0
Accounts payable	48.7	34.3	34.9
Accounts payable – associated companies	1.9	0.4	1.7
Advance customer billings	21.4	21.1	22.5
Wages and compensation accrued	5.7	7.8	5.7
Customer deposits	18.8	18.2	20.0
Interest accrued	3.4	3.3	3.3
Taxes accrued	18.9	21.6	22.5
Unamortized purchased gas adjustments	0.0	0.0	14.3
Other regulatory liabilities	37.4	22.7	40.4
Other	5.0	6.3	5.1
Total Current Liabilities	263.7	217.7	213.4
Deferred Credits and Other Liabilities:
Pension and postretirement benefit costs	75.6	74.3	46.5
Asset retirement obligations	121.4	120.1	87.5
Regulatory liabilities	40.6	41.7	47.7
Other	21.3	21.2	21.7
Total Deferred Credits and Other Liabilities	258.9	257.3	203.4
Total Capitalization and Liabilities	$ 1,641.2	$ 1,589.9	$ 1,532.4