Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Millions	Jun. 30, 2022		Sep. 30, 2021		Jun. 30, 2021
ASSETS
Utility Plant	$ 7,549.7		$ 7,225.0		$ 7,110.2
Less: Accumulated depreciation and amortization	2,256.7		2,169.3		2,173.1
Net Utility Plant	5,293.0		5,055.7		4,937.1
Non-utility Property (net of accumulated depreciation and amortization of $46.0, $32.1 and $28.8 at June 30, 2022, September 30, 2021, and June 30, 2021, respectively)	476.9		471.1		463.6
Other Investments	90.5		83.1		76.4
Total Other Property and Investments	567.4		554.2		540.0
Other Property and Investments	567.4		554.2		540.0
Current Assets:
Cash and cash equivalents	16.0		4.3		23.9
Utility	266.1		338.4		342.6
Other	353.7		288.2		193.9
Allowance for credit losses	(32.6)		(30.3)		(34.5)
Delayed customer billings	45.4		9.2		13.2
Accounts receivable:
Utility	266.1		338.4		342.6
Other	353.7		288.2		193.9
Allowance for credit losses	(32.6)		(30.3)		(34.5)
Delayed customer billings	45.4		9.2		13.2
Inventories:
Natural gas	250.8		267.7		179.9
Propane gas	8.6		8.7		8.7
Materials and supplies	40.9		28.6		27.8
Regulatory assets	152.0		306.5		65.1
Prepayments	55.0		29.0		42.4
Other current assets	105.2		66.2		35.3
Total Current Assets	1,261.1		1,316.5		898.3
Deferred Charges and Other Assets:
Goodwill	1,171.6		1,171.6		1,171.6
Regulatory assets	1,205.6		993.5		1,119.4
Other	285.2		264.9		226.9
Total Deferred Charges and Other Assets	2,662.4		2,430.0		2,517.9
Total Assets	9,783.9		9,356.4		8,893.3
Capitalization:
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at June 30, 2022, September 30, 2021, and June 30, 2021)	242.0		242.0		242.0
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.5 million, 51.7 million, and 51.7 million shares issued and outstanding at June 30, 2022, September 30, 2021, and June 30, 2021, respectively)	52.5		51.7		51.7
Paid-in capital	1,570.0		1,517.9		1,513.9
Retained earnings	949.2		843.0		887.6
Accumulated other comprehensive income (loss)	32.2		3.6		1.9
Total Shareholders' Equity	2,845.9		2,658.2		2,697.1
Temporary equity	15.0		9.8		9.3
Long-term debt (less current portion)	3,207.9		2,939.1		2,939.0
Total Capitalization	6,068.8		5,607.1		5,645.4
Current Liabilities:
Current portion of long-term debt	31.2		55.8		110.8
Notes payable	709.2		672.0		461.0
Accounts payable	581.2		409.9		294.3
Advance customer billings	7.6		32.1		13.8
Wages and compensation accrued	50.0		59.5		56.1
Customer deposits	28.6		28.9		29.1
Taxes accrued	76.8		78.8		68.1
Regulatory liabilities	3.2		34.6		46.8
Other current liabilities	262.1		236.7		211.8
Total Current Liabilities	1,749.9		1,608.3		1,291.8
Deferred Credits and Other Liabilities:
Deferred income taxes	675.8		612.3		605.8
Pension and postretirement benefit costs	199.6		235.9		231.8
Asset retirement obligations	535.4		519.6		556.5
Regulatory liabilities	389.0		620.9		414.6
Other noncurrent liabilities	165.4		152.3		147.4
Total Deferred Credits and Other Liabilities	1,965.2		2,141.0		1,956.1
Commitments and Contingencies (Note 10)
Total Capitalization and Liabilities	9,783.9		9,356.4		8,893.3
Spire Missouri [Member]
ASSETS
Utility Plant	4,498.7		4,266.6		4,173.9
Less: Accumulated depreciation and amortization	965.7		905.1		883.3
Net Utility Plant	3,533.0		3,361.5		3,290.6
Total Other Property and Investments	61.3		60.2		60.7
Other Property and Investments	61.3		60.2		60.7
Current Assets:
Cash and cash equivalents	7.0		0.0		4.3
Utility	162.2		279.0		290.8
Associated companies	1.7		4.7		38.4
Other	12.2		57.5		21.5
Allowance for credit losses	(25.1)		(22.6)		(27.4)
Delayed customer billings	43.7		2.4		9.9
Accounts receivable:
Utility	162.2		279.0		290.8
Other	12.2		57.5		21.5
Allowance for credit losses	(25.1)		(22.6)		(27.4)
Delayed customer billings	43.7		2.4		9.9
Associated companies	1.7		4.7		38.4
Inventories:
Natural gas	140.4		176.7		133.3
Propane gas	8.6		8.7		8.7
Materials and supplies	22.1		15.0		15.4
Regulatory assets	89.9		276.3		36.6
Prepayments	31.6		19.7		28.4
Other current assets	0.0		0.1		0.0
Total Current Assets	494.3		817.5		559.9
Deferred Charges and Other Assets:
Goodwill	210.2		210.2		210.2
Regulatory assets	664.6		483.1		583.8
Other	127.2		125.6		98.0
Total Deferred Charges and Other Assets	1,002.0		818.9		892.0
Total Assets	5,090.6		5,058.1		4,803.2
Capitalization:
Retained earnings	952.1		817.0		825.7
Accumulated other comprehensive income (loss)	(3.8)		(4.2)		(2.6)
Total Shareholders' Equity	1,764.5	[1]	1,577.9	[1]	1,588.2
Long-term debt (less current portion)	1,637.4		1,338.4		1,338.6
Total Capitalization	3,401.9		2,916.3		2,926.8
Paid-in capital and common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325, 24,577, and 24,577 shares issued and outstanding at June 30, 2022, September 30, 2021, and June 30, 2021, respectively)	816.2		765.1		765.1
Current Liabilities:
Notes payable	0.0		250.0		250.0
Accounts payable	110.5		89.7		58.8
Advance customer billings	0.0		19.7		5.4
Wages and compensation accrued	33.7		40.3		36.6
Customer deposits	7.1		8.0		8.1
Taxes accrued	41.0		41.2		33.9
Regulatory liabilities	0.0		17.1		27.1
Other current liabilities	45.1		47.4		43.6
Total Current Liabilities	538.3		764.5		688.6
Notes payable – associated companies	285.4		240.9		217.5
Accounts payable – associated companies	15.5		10.2		7.6
Deferred Credits and Other Liabilities:
Deferred income taxes	501.6		480.0		475.7
Pension and postretirement benefit costs	142.0		159.5		155.3
Asset retirement obligations	147.8		143.4		158.1
Regulatory liabilities	300.8		538.8		342.8
Other noncurrent liabilities	58.2		55.6		55.9
Total Deferred Credits and Other Liabilities	1,150.4		1,377.3		1,187.8
Total Capitalization and Liabilities	5,090.6		5,058.1		4,803.2
Spire Alabama Inc [Member]
ASSETS
Utility Plant	2,663.0		2,586.5		2,569.1
Less: Accumulated depreciation and amortization	1,153.8		1,124.8		1,150.4
Net Utility Plant	1,509.2		1,461.7		1,418.7
Current Assets:
Cash and cash equivalents	3.7		0.0		9.5
Utility	92.9		49.8		42.6
Associated companies	0.8		0.6		0.5
Other	5.8		6.4		5.6
Allowance for credit losses	(6.6)		(6.6)		(6.0)
Delayed customer billings	1.6		6.7		3.2
Accounts receivable:
Utility	92.9		49.8		42.6
Other	5.8		6.4		5.6
Allowance for credit losses	(6.6)		(6.6)		(6.0)
Delayed customer billings	1.6		6.7		3.2
Associated companies	0.8		0.6		0.5
Inventories:
Natural gas	69.1		35.5		24.5
Materials and supplies	15.3		10.8		9.7
Regulatory assets	52.9		18.8		17.1
Prepayments	8.3		5.4		8.2
Total Current Assets	243.8		127.4		114.9
Deferred Charges and Other Assets:
Regulatory assets	514.1		483.3		508.2
Other	81.0		63.9		53.6
Total Deferred Charges and Other Assets	600.6		581.4		592.7
Total Assets	2,353.6		2,170.5		2,126.3
Deferred income taxes	5.5		34.2		30.9
Capitalization:
Retained earnings	613.7		552.6		567.8
Total Shareholders' Equity	930.6		881.5		896.7
Long-term debt (less current portion)	571.4		571.2		571.2
Total Capitalization	1,502.0		1,452.7		1,467.9
Paid-in capital and common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325, 24,577, and 24,577 shares issued and outstanding at June 30, 2022, September 30, 2021, and June 30, 2021, respectively)	316.9		328.9		328.9
Current Liabilities:
Current portion of long-term debt	0.0		50.0		50.0
Accounts payable	85.7		52.3		34.8
Advance customer billings	6.1		11.2		7.2
Wages and compensation accrued	7.6		9.3		8.6
Customer deposits	18.9		18.4		18.4
Taxes accrued	29.3		30.4		27.8
Regulatory liabilities	0.0		13.4		15.5
Other current liabilities	21.3		17.3		15.4
Total Current Liabilities	373.3		257.3		182.2
Notes payable – associated companies	196.3		49.0		0.0
Accounts payable – associated companies	8.1		6.0		4.5
Deferred Credits and Other Liabilities:
Pension and postretirement benefit costs	50.9		66.7		65.8
Asset retirement obligations	373.7		362.8		385.5
Regulatory liabilities	24.0		23.4		17.5
Other noncurrent liabilities	29.7		7.6		7.4
Total Deferred Credits and Other Liabilities	478.3		460.5		476.2
Total Capitalization and Liabilities	$ 2,353.6		$ 2,170.5		$ 2,126.3

[1] Accumulated other comprehensive income (loss)