10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 10-Q

(Mark One)

☒	QUARTERLY REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023
	or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from                           to

Commission File Number	Name of Registrant, Address of Principal Executive Offices and Telephone Number	State of Incorporation	I.R.S. Employer Identification Number
1-16681	Spire Inc. 700 Market Street St. Louis, MO 63101 314-342-0500	Missouri	74-2976504
1-1822	Spire Missouri Inc. 700 Market Street St. Louis, MO 63101 314-342-0500	Missouri	43-0368139
2-38960	Spire Alabama Inc. 605 Richard Arrington Blvd N Birmingham, AL 35203 205-326-8100	Alabama	63-0022000

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (only applicable for Spire Inc.):

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock $1.00 par value	SR	New York Stock Exchange LLC
Depositary Shares, each representing a 1/1,000th interest in a share of 5.90% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $25.00 per share	SR.PRA	New York Stock Exchange LLC

Indicate by check mark whether each registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or for such shorter period that the registrant was required to file such report) and (2) has been subject to such filing requirements for the past 90 days.

Spire Inc.	Yes ☒	No ☐
Spire Missouri Inc.	Yes ☒	No ☐
Spire Alabama Inc.	Yes ☒	No ☐

Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Spire Inc.	Yes ☒	No ☐
Spire Missouri Inc.	Yes ☒	No ☐
Spire Alabama Inc.	Yes ☒	No ☐

Indicate by check mark whether each registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

	Large accelerated filer	Accelerated filer	Non- accelerated filer	Smaller reporting company	Emerging growth company
Spire Inc.	X
Spire Missouri Inc.			X
Spire Alabama Inc.			X

If an emerging growth company, indicate by check mark if each registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Spire Inc.	☐
Spire Missouri Inc.	☐
Spire Alabama Inc.	☐

Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Spire Inc.	Yes ☐	No ☒
Spire Missouri Inc.	Yes ☐	No ☒
Spire Alabama Inc.	Yes ☐	No ☒

The number of shares outstanding of each registrant’s common stock as of July 31, 2023, was as follows:

Spire Inc.	Common Stock, par value $1.00 per share	52,603,138
Spire Missouri Inc.	Common Stock, par value $1.00 per share (all owned by Spire Inc.)	25,325
Spire Alabama Inc.	Common Stock, par value $0.01 per share (all owned by Spire Inc.)	1,972,052

Spire Missouri Inc. and Spire Alabama Inc. meet the conditions set forth in General Instructions H(1)(a) and (b) to Form 10-Q and are therefore filing this Form 10-Q with the reduced disclosure format specified in General Instructions H(2) to Form 10-Q.

This combined Form 10-Q represents separate filings by Spire Inc., Spire Missouri Inc., and Spire Alabama Inc. Information contained herein relating to an individual registrant is filed by that registrant on its own behalf. Each registrant makes no representation as to information relating to the other registrants, except that information relating to Spire Missouri Inc. and Spire Alabama Inc. are also attributed to Spire Inc.

TABLE OF CONTENTS
		Page No.
GLOSSARY		2
PART I. FINANCIAL INFORMATION
Item 1	Financial Statements (Unaudited)
	Spire Inc.
	Condensed Consolidated Statements of Income	4
	Condensed Consolidated Statements of Comprehensive Income	5
	Condensed Consolidated Balance Sheets	6
	Condensed Consolidated Statements of Shareholders’ Equity	8
	Condensed Consolidated Statements of Cash Flows	10
	Spire Missouri Inc.
	Condensed Statements of Comprehensive Income	11
	Condensed Balance Sheets	12
	Condensed Statements of Shareholder’s Equity	14
	Condensed Statements of Cash Flows	15
	Spire Alabama Inc.
	Condensed Statements of Income	16
	Condensed Balance Sheets	17
	Condensed Statements of Shareholder’s Equity	19
	Condensed Statements of Cash Flows	20
	Notes to Financial Statements
	Note 1. Summary of Significant Accounting Policies	21
	Note 2. Revenue	24
	Note 3. Earnings Per Common Share	25
	Note 4. Shareholders' Equity	25
	Note 5. Regulatory Matters	26
	Note 6. Financing	31
	Note 7. Fair Value of Financial Instruments	32
	Note 8. Fair Value Measurements	34
	Note 9. Pension Plans and Other Postretirement Benefits	37
	Note 10. Information by Operating Segment	40
	Note 11. Commitments and Contingencies	43
Item 2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	46
Item 3	Quantitative and Qualitative Disclosures About Market Risk	64
Item 4	Controls and Procedures	64
PART II. OTHER INFORMATION
Item 1	Legal Proceedings	65
Item 1A	Risk Factors	65
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	65
Item 3	Defaults upon Senior Securities	65
Item 4	Mine Safety Disclosures	65
Item 5	Other Information	65
Item 6	Exhibits	66
SIGNATURES		67

1

GLOSSARY OF KEY TERMS AND ABBREVIATIONS

APSC	Alabama Public Service Commission	PGA	Purchased Gas Adjustment
ASC	Accounting Standards Codification	RSE	Rate Stabilization and Equalization
Company	Spire and its subsidiaries unless the context suggests otherwise	SEC	U.S. Securities and Exchange Commission
Degree days	The average of a day’s high and low temperature below 65, subtracted from 65, multiplied by the number of days impacted	Spire	Spire Inc.
FASB	Financial Accounting Standards Board	Spire Alabama	Spire Alabama Inc.
FERC	Federal Energy Regulatory Commission	Spire EnergySouth	Spire EnergySouth Inc., the parent of Spire Gulf and Spire Mississippi
GAAP	Accounting principles generally accepted in the United States of America	Spire Gulf	Spire Gulf Inc.
Gas Marketing	Segment including Spire Marketing, which provides natural gas marketing services	Spire Marketing	Spire Marketing Inc.
Gas Utility	Segment including the operations of the Utilities	Spire Mississippi	Spire Mississippi Inc.
GSA	Gas Supply Adjustment	Spire Missouri	Spire Missouri Inc.
ISRS	Infrastructure System Replacement Surcharge	Spire STL Pipeline	Spire STL Pipeline LLC, or the 65-mile FERC-regulated pipeline it constructed and operates to deliver natural gas into eastern Missouri
Midstream	Segment including Spire Storage and Spire STL Pipeline	Spire Storage	The physical natural gas storage operations of Spire Storage West LLC and Spire Storage Salt Plains LLC
MoPSC	Missouri Public Service Commission	U.S.	United States
MSPSC	Mississippi Public Service Commission	Utilities	Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth
O&M	Operation and maintenance expense

2

PART I. FINANCIAL INFORMATION

The interim financial statements included herein have been prepared by three separate registrants — Spire Inc. (“Spire” or the “Company”), Spire Missouri Inc. (“Spire Missouri”) and Spire Alabama Inc. (“Spire Alabama”) — without audit, pursuant to the rules and regulations of the United States Securities and Exchange Commission (SEC). These financial statements should be read in conjunction with the financial statements and the notes thereto included in the registrants’ combined Form 10-K for the fiscal year ended September 30, 2022.

The Financial Information in this Part I includes separate financial statements (i.e., statements of income and comprehensive income, balance sheets, statements of shareholders’ equity and statements of cash flows) for Spire, Spire Missouri and Spire Alabama. The Notes to Financial Statements and Management’s Discussion and Analysis of Financial Condition and Results of Operations are also included and presented herein on a combined basis for Spire, Spire Missouri and Spire Alabama.

3

Item 1. Financial Statements

SPIRE INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(UNAUDITED)

	Three Months Ended June 30,						Nine Months Ended June 30,
(In millions, except per share amounts)	2023			2022			2023		2022
Operating Revenues	$	418.5		$	448.0		$	2,355.9	$	1,884.3
Operating Expenses:
Natural gas		169.8			203.3			1,175.5		844.5
Operation and maintenance		125.5			102.3			389.7		331.9
Depreciation and amortization		64.3			60.4			189.0		176.2
Taxes, other than income taxes		46.9			44.1			179.2		153.3
Total Operating Expenses		406.5			410.1			1,933.4		1,505.9
Operating Income		12.0			37.9			422.5		378.4
Interest Expense, Net		46.7			29.3			137.5		85.4
Other Income (Expense), Net		6.3			(12.1	)		19.3		(8.1	)
(Loss) Income Before Income Taxes		(28.4	)		(3.5	)		304.3		284.9
Income Tax (Benefit) Expense		(6.8	)		(2.1	)		55.7		57.0
Net (Loss) Income		(21.6	)		(1.4	)		248.6		227.9
Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
Net (Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Number of Common Shares Outstanding:
Basic		52.5			52.2			52.5		51.9
Diluted		52.5			52.2			52.6		52.0
Basic (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.52	$	4.17
Diluted (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.51	$	4.16

See the accompanying Notes to Financial Statements.

4

SPIRE INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(UNAUDITED)

	Three Months Ended June 30,						Nine Months Ended June 30,
(In millions)	2023			2022			2023			2022
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6		$	227.9
Other Comprehensive Income (Loss), Before Tax:
Cash flow hedging derivative instruments:
Net hedging gain (loss) arising during the period		7.6			24.3			(2.2	)		38.2
Amounts reclassified into regulatory liabilities		—			—			(17.5	)		—
Amounts reclassified into net income		(0.8	)		(0.2	)		(1.6	)		(0.9	)
Net gain (loss) on cash flow hedging derivative instruments		6.8			24.1			(21.3	)		37.3
Net gain on defined benefit pension and other postretirement plans		—			0.2			0.2			0.4
Net unrealized gain (loss) on available for sale securities		0.1			(0.1	)		0.1			(0.3	)
Other Comprehensive Income (Loss), Before Tax		6.9			24.2			(21.0	)		37.4
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss)		1.6			5.7			(5.0	)		8.8
Other Comprehensive Income (Loss), Net of Tax		5.3			18.5			(16.0	)		28.6
Comprehensive (Loss) Income	$	(16.3	)	$	17.1		$	232.6		$	256.5

See the accompanying Notes to Financial Statements.

5

SPIRE INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(UNAUDITED)

	June 30,			September 30,			June 30,
(Dollars in millions, except per share amounts)	2023			2022			2022
ASSETS
Utility Plant	$	8,016.7		$	7,664.9		$	7,549.7
Less: Accumulated depreciation and amortization		2,382.9			2,294.5			2,256.7
Net Utility Plant		5,633.8			5,370.4			5,293.0
Non-utility Property (net of accumulated depreciation and amortization of $65.7, $50.7 and $46.0 at June 30, 2023, September 30, 2022, and June 30, 2022, respectively)		582.7			491.4			476.9
Other Investments		102.5			87.8			90.5
Total Other Property and Investments		685.2			579.2			567.4
Current Assets:
Cash and cash equivalents		5.3			6.5			16.0
Accounts receivable:
Utility		245.9			210.8			266.1
Other		127.4			443.8			353.7
Allowance for credit losses		(34.7	)		(31.9	)		(32.6	)
Delayed customer billings		58.6			21.3			45.4
Inventories:
Natural gas		184.9			371.8			250.8
Propane gas		8.6			8.6			8.6
Materials and supplies		49.6			41.9			40.9
Regulatory assets		93.3			355.4			152.0
Prepayments		55.1			41.1			55.0
Other		67.2			122.7			105.2
Total Current Assets		861.2			1,592.0			1,261.1
Deferred Charges and Other Assets:
Goodwill		1,171.6			1,171.6			1,171.6
Regulatory assets		1,421.2			1,112.4			1,205.6
Other		264.5			258.1			285.2
Total Deferred Charges and Other Assets		2,857.3			2,542.1			2,662.4
Total Assets	$	10,037.5		$	10,083.7		$	9,783.9

6

SPIRE INC.

CONDENSED CONSOLIDATED BALANCE SHEETS (Continued)

(UNAUDITED)

	June 30,		September 30,		June 30,
	2023		2022		2022
CAPITALIZATION AND LIABILITIES
Capitalization:
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at June 30, 2023, September 30, 2022, and June 30, 2022)	$	242.0	$	242.0	$	242.0
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.6 million, 52.5 million, and 52.5 million shares issued and outstanding at June 30, 2023, September 30, 2022, and June 30, 2022, respectively)		52.6		52.5		52.5
Paid-in capital		1,578.3		1,571.3		1,570.0
Retained earnings		1,028.4		905.5		949.2
Accumulated other comprehensive income		31.2		47.2		32.2
Total Shareholders' Equity		2,932.5		2,818.5		2,845.9
Temporary equity		17.7		13.1		15.0
Long-term debt (less current portion)		3,553.3		2,958.5		3,207.9
Total Capitalization		6,503.5		5,790.1		6,068.8
Current Liabilities:
Current portion of long-term debt		406.6		281.2		31.2
Notes payable		557.6		1,037.5		709.2
Accounts payable		196.3		617.4		581.2
Advance customer billings		7.6		18.7		7.6
Wages and compensation accrued		35.9		50.2		50.0
Customer deposits		27.7		28.2		28.6
Taxes accrued		88.5		90.1		76.8
Regulatory liabilities		5.5		3.7		3.2
Other		204.7		226.6		262.1
Total Current Liabilities		1,530.4		2,353.6		1,749.9
Deferred Credits and Other Liabilities:
Deferred income taxes		735.9		675.1		675.8
Pension and postretirement benefit costs		154.7		163.0		199.6
Asset retirement obligations		538.1		520.9		535.4
Regulatory liabilities		428.1		418.2		389.0
Other		146.8		162.8		165.4
Total Deferred Credits and Other Liabilities		2,003.6		1,940.0		1,965.2
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	$	10,037.5	$	10,083.7	$	9,783.9

See the accompanying Notes to Financial Statements.

7

SPIRE INC.

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(UNAUDITED)

	Common Stock					Preferred		Paid-in			Retained
(Dollars in millions)	Shares			Par		Stock		Capital			Earnings			AOCI*			Total
Three Months Ended June 30, 2023:
Balance at March 31, 2023		52,593,433		$	52.6	$	242.0	$	1,576.5		$	1,089.5		$	25.9		$	2,986.5
Net loss		—			—		—		—			(21.6	)		—			(21.6	)
Dividend reinvestment plan		5,367			—		—		0.4			—			—			0.4
Stock-based compensation costs		—			—		—		1.4			—			—			1.4
Stock activity under stock-based compensation plans		(609	)		—		—		—			—			—			—
Employees’ tax withholding for stock-based compensation		(262	)		—		—		—			—			—			—
Temporary equity adjustment to redemption value		—			—		—		—			2.8			—			2.8
Dividends declared:
Common stock ($0.72 per share)		—			—		—		—			(38.6	)		—			(38.6	)
Preferred stock ($0.36875 per depositary share)		—			—		—		—			(3.7	)		—			(3.7	)
Other comprehensive income, net of tax		—			—		—		—			—			5.3			5.3
Balance at June 30, 2023		52,597,929		$	52.6	$	242.0	$	1,578.3		$	1,028.4		$	31.2		$	2,932.5
Nine Months Ended June 30, 2023:
Balance at September 30, 2022		52,494,543		$	52.5	$	242.0	$	1,571.3		$	905.5		$	47.2		$	2,818.5
Net income		—			—		—		—			248.6			—			248.6
Common stock issued		40,500			0.1		—		2.9			—			—			3.0
Dividend reinvestment plan		16,488			—		—		1.1			—			—			1.1
Stock-based compensation costs		—			—		—		4.3			—			—			4.3
Stock activity under stock-based compensation plans		64,077			—		—		—			—			—			—
Employees’ tax withholding for stock-based compensation		(17,679	)		—		—		(1.3	)		—			—			(1.3	)
Temporary equity adjustment to redemption value		—			—		—		—			(0.2	)		—			(0.2	)
Dividends declared:
Common stock ($2.16 per share)		—			—		—		—			(114.4	)		—			(114.4	)
Preferred stock ($1.10625 per depositary share)		—			—		—		—			(11.1	)		—			(11.1	)
Other comprehensive loss, net of tax		—			—		—		—			—			(16.0	)		(16.0	)
Balance at June 30, 2023		52,597,929		$	52.6	$	242.0	$	1,578.3		$	1,028.4		$	31.2		$	2,932.5

8

SPIRE INC.

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Continued)

(UNAUDITED)

	Common Stock					Preferred		Paid-in			Retained
	Shares			Par		Stock		Capital			Earnings			AOCI*		Total
Three Months Ended June 30, 2022:
Balance at March 31, 2022		52,116,667		$	52.1	$	242.0	$	1,541.1		$	992.3		$	13.7	$	2,841.2
Net loss		—			—		—		—			(1.4	)		—		(1.4	)
Common stock issued		365,625			0.4		—		27.2			—			—		27.6
Dividend reinvestment plan		5,245			—		—		0.4			—			—		0.4
Stock-based compensation costs		—			—		—		1.3			—			—		1.3
Stock activity under stock-based compensation plans		(135	)		—		—		—			—			—		—
Employees’ tax withholding for stock-based compensation		(620	)		—		—		—			—			—		—
Temporary equity adjustment to redemption value		—			—		—		—			(2.2	)		—		(2.2	)
Dividends declared:
Common stock ($0.685 per share)		—			—		—		—			(35.8	)		—		(35.8	)
Preferred stock ($0.36875 per depositary share)		—			—		—		—			(3.7	)		—		(3.7	)
Other comprehensive income, net of tax		—			—		—		—			—			18.5		18.5
Balance at June 30, 2022		52,486,782		$	52.5	$	242.0	$	1,570.0		$	949.2		$	32.2	$	2,845.9
Nine Months Ended June 30, 2022:
Balance at September 30, 2021		51,684,883		$	51.7	$	242.0	$	1,517.9		$	843.0		$	3.6	$	2,658.2
Net income		—			—		—		—			227.9			—		227.9
Common stock issued		719,625			0.7		—		50.0			—			—		50.7
Dividend reinvestment plan		18,514			—		—		1.2			—			—		1.2
Stock-based compensation costs		—			—		—		2.7			—			—		2.7
Stock activity under stock-based compensation plans		91,293			0.1		—		(0.1	)		—			—		—
Employees’ tax withholding for stock-based compensation		(27,533	)		—		—		(1.7	)		—			—		(1.7	)
Temporary equity adjustment to redemption value		—			—		—		—			(3.4	)		—		(3.4	)
Dividends declared:
Common stock ($2.055 per share)		—			—		—		—			(107.2	)		—		(107.2	)
Preferred stock ($1.10625 per depository share)		—			—		—		—			(11.1	)		—		(11.1	)
Other comprehensive income, net of tax		—			—		—		—			—			28.6		28.6
Balance at June 30, 2022		52,486,782		$	52.5	$	242.0	$	1,570.0		$	949.2		$	32.2	$	2,845.9

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

9

SPIRE INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	Nine Months Ended June 30,
(In millions)	2023			2022
Operating Activities:
Net Income	$	248.6		$	227.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		189.0			176.2
Deferred income taxes and investment tax credits		55.7			57.0
Changes in assets and liabilities:
Accounts receivable		284.1			9.1
Inventories		179.3			4.9
Regulatory assets and liabilities		(18.0	)		(323.8	)
Accounts payable		(405.6	)		180.3
Delayed/advance customer billings, net		(48.5	)		(60.8	)
Taxes accrued		(2.3	)		(2.2	)
Other assets and liabilities		(88.4	)		(70.1	)
Other		10.2			6.1
Net cash provided by operating activities		404.1			204.6
Investing Activities:
Capital expenditures		(483.3	)		(402.5	)
Business acquisition		(37.0	)		—
Other		3.9			4.2
Net cash used in investing activities		(516.4	)		(398.3	)
Financing Activities:
Issuance of long-term debt		755.0			300.0
Repayment of long-term debt		(31.2	)		(55.8	)
(Repayment) issuance of short-term debt, net		(479.9	)		37.2
Issuance of common stock		4.0			51.9
Dividends paid on common stock		(112.5	)		(105.9	)
Dividends paid on preferred stock		(11.1	)		(11.1	)
Other		(7.5	)		(3.8	)
Net cash provided by financing activities		116.8			212.5
Net Increase in Cash, Cash Equivalents, and Restricted Cash		4.5			18.8
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period		20.5			11.3
Cash, Cash Equivalents, and Restricted Cash at End of Period	$	25.0		$	30.1
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(118.2	)	$	(80.2	)
Income taxes		(1.8	)		(0.7	)

See the accompanying Notes to Financial Statements.

10

SPIRE MISSOURI INC.

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME

(UNAUDITED)

	Three Months Ended June 30,						Nine Months Ended June 30,
(In millions)	2023			2022			2023		2022
Operating Revenues	$	253.8		$	236.7		$	1,586.0	$	1,155.8
Operating Expenses:
Natural gas		105.5			94.7			887.9		538.8
Operation and maintenance		71.1			59.5			225.6		190.1
Depreciation and amortization		40.0			37.3			117.8		107.4
Taxes, other than income taxes		34.4			32.3			132.0		111.0
Total Operating Expenses		251.0			223.8			1,363.3		947.3
Operating Income		2.8			12.9			222.7		208.5
Interest Expense, Net		24.9			14.7			71.5		43.4
Other Income (Expense), Net		4.7			(9.7	)		15.6		(6.2	)
Income (Loss) Before Income Taxes		(17.4	)		(11.5	)		166.8		158.9
Income Tax (Benefit) Expense		(3.6	)		(3.1	)		21.2		23.8
Net (Loss) Income		(13.8	)		(8.4	)		145.6		135.1
Other Comprehensive Income, Net of Tax		—			0.2			0.2		0.4
Comprehensive (Loss) Income	$	(13.8	)	$	(8.2	)	$	145.8	$	135.5

See the accompanying Notes to Financial Statements.

11

SPIRE MISSOURI INC.

CONDENSED BALANCE SHEETS

(UNAUDITED)

	June 30,			September 30,			June 30,
(Dollars in millions, except per share amounts)	2023			2022			2022
ASSETS
Utility Plant	$	4,831.2		$	4,550.4		$	4,498.7
Less: Accumulated depreciation and amortization		1,037.6			982.1			965.7
Net Utility Plant		3,793.6			3,568.3			3,533.0
Other Property and Investments		67.7			58.9			61.3
Current Assets:
Cash and cash equivalents		—			—			7.0
Accounts receivable:
Utility		186.8			131.5			162.2
Associated companies		7.1			3.7			1.7
Other		23.0			44.5			12.2
Allowance for credit losses		(28.7	)		(24.9	)		(25.1	)
Delayed customer billings		57.0			16.1			43.7
Inventories:
Natural gas		98.5			215.3			140.4
Propane gas		8.6			8.6			8.6
Materials and supplies		25.1			22.0			22.1
Regulatory assets		35.0			288.1			89.9
Prepayments		34.5			23.3			31.6
Total Current Assets		446.9			728.2			494.3
Deferred Charges and Other Assets:
Goodwill		210.2			210.2			210.2
Regulatory assets		819.1			547.6			664.6
Other		108.4			105.0			127.2
Total Deferred Charges and Other Assets		1,137.7			862.8			1,002.0
Total Assets	$	5,445.9		$	5,218.2		$	5,090.6

12

SPIRE MISSOURI INC.

CONDENSED BALANCE SHEETS (Continued)

(UNAUDITED)

	June 30,			September 30,			June 30,
	2023			2022			2022
CAPITALIZATION AND LIABILITIES
Capitalization:
Paid-in capital and common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325 shares issued and outstanding)	$	816.2		$	816.2		$	816.2
Retained earnings		1,034.0			931.9			952.1
Accumulated other comprehensive loss		(2.5	)		(2.7	)		(3.8	)
Total Shareholder's Equity		1,847.7			1,745.4			1,764.5
Long-term debt (less current portion)		1,785.1			1,387.7			1,637.4
Total Capitalization		3,632.8			3,133.1			3,401.9
Current Liabilities:
Current portion of long-term debt		250.0			250.0			—
Notes payable – associated companies		228.1			445.3			285.4
Accounts payable		63.3			119.0			110.5
Accounts payable – associated companies		13.3			13.3			15.5
Advance customer billings		—			7.0			—
Wages and compensation accrued		18.3			33.8			33.7
Customer deposits		5.8			6.5			7.1
Taxes accrued		49.3			50.4			41.0
Other		43.6			45.6			45.1
Total Current Liabilities		671.7			970.9			538.3
Deferred Credits and Other Liabilities:
Deferred income taxes		533.7			500.1			501.6
Pension and postretirement benefit costs		96.4			115.5			142.0
Asset retirement obligations		113.9			110.6			147.8
Regulatory liabilities		346.1			331.8			300.8
Other		51.3			56.2			58.2
Total Deferred Credits and Other Liabilities		1,141.4			1,114.2			1,150.4
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	$	5,445.9		$	5,218.2		$	5,090.6

See the accompanying Notes to Financial Statements.

13

SPIRE MISSOURI INC.

CONDENSED STATEMENTS OF SHAREHOLDER’S EQUITY

(UNAUDITED)

	Common Stock				Paid-in		Retained
(Dollars in millions)	Shares		Par		Capital		Earnings			AOCI*			Total
Three Months Ended June 30, 2023:
Balance at March 31, 2023		25,325	$	0.1	$	816.1	$	1,061.3		$	(2.5	)	$	1,875.0
Net loss		—		—		—		(13.8	)		—			(13.8	)
Dividends declared		—		—		—		(13.5	)		—			(13.5	)
Balance at June 30, 2023		25,325	$	0.1	$	816.1	$	1,034.0		$	(2.5	)	$	1,847.7
Nine Months Ended June 30, 2023:
Balance at September 30, 2022		25,325	$	0.1	$	816.1	$	931.9		$	(2.7	)	$	1,745.4
Net income		—		—		—		145.6			—			145.6
Dividends declared		—		—		—		(43.5	)		—			(43.5	)
Other comprehensive income, net of tax		—		—		—		—			0.2			0.2
Balance at June 30, 2023		25,325	$	0.1	$	816.1	$	1,034.0		$	(2.5	)	$	1,847.7
Three Months Ended June 30, 2022:
Balance at March 31, 2022		24,929	$	0.1	$	788.3	$	960.5		$	(4.0	)	$	1,744.9
Net loss		—		—		—		(8.4	)		—			(8.4	)
Common stock issued to Spire Inc.		396		—		27.8		—			—			27.8
Other comprehensive income, net of tax		—		—		—		—			0.2			0.2
Balance at June 30, 2022		25,325	$	0.1	$	816.1	$	952.1		$	(3.8	)	$	1,764.5
Nine Months Ended June 30, 2022:
Balance at September 30, 2021		24,577	$	0.1	$	765.0	$	817.0		$	(4.2	)	$	1,577.9
Net income		—		—		—		135.1			—			135.1
Common stock issued to Spire Inc.		748		—		51.1		—			—			51.1
Other comprehensive income, net of tax		—		—		—		—			0.4			0.4
Balance at June 30, 2022		25,325	$	0.1	$	816.1	$	952.1		$	(3.8	)	$	1,764.5

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

14

SPIRE MISSOURI INC.

CONDENSED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	Nine Months Ended June 30,
(In millions)	2023			2022
Operating Activities:
Net Income	$	145.6		$	135.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		117.8			107.4
Deferred income taxes and investment tax credits		21.2			23.8
Changes in assets and liabilities:
Accounts receivable		(33.3	)		167.6
Inventories		113.7			29.4
Regulatory assets and liabilities		1.2			(260.8	)
Accounts payable		(43.6	)		25.8
Delayed/advance customer billings, net		(47.9	)		(61.0	)
Taxes accrued		(1.1	)		(0.2	)
Other assets and liabilities		(88.4	)		(48.5	)
Other		1.3			1.0
Net cash provided by operating activities		186.5			119.6
Investing Activities:
Capital expenditures		(324.8	)		(258.7	)
Other		2.9			2.6
Net cash used in investing activities		(321.9	)		(256.1	)
Financing Activities:
Issuance of long-term debt		400.0			300.0
Repayment of short-term debt, net		—			(250.0	)
(Repayments to) Borrowings from Spire, net		(217.2	)		44.5
Issuance of common stock		—			51.1
Dividends paid		(43.5	)		—
Other		(3.9	)		(2.1	)
Net cash provided by financing activities		135.4			143.5
Net Change in Cash and Cash Equivalents		—			7.0
Cash and Cash Equivalents at Beginning of Period		—			—
Cash and Cash Equivalents at End of Period	$	—		$	7.0
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(64.7	)	$	(43.9	)
Income taxes		—			—

See the accompanying Notes to Financial Statements.

15

SPIRE ALABAMA INC.

CONDENSED STATEMENTS OF INCOME

(UNAUDITED)

	Three Months Ended June 30,					Nine Months Ended June 30,
(In millions)	2023		2022			2023		2022
Operating Revenues	$	113.1	$	115.7		$	483.8	$	446.4
Operating Expenses:
Natural gas		42.7		41.0			173.9		138.6
Operation and maintenance		33.4		29.2			103.0		96.6
Depreciation and amortization		17.5		16.9			51.5		50.1
Taxes, other than income taxes		9.3		8.6			36.0		32.1
Total Operating Expenses		102.9		95.7			364.4		317.4
Operating Income		10.2		20.0			119.4		129.0
Interest Expense, Net		8.7		5.2			26.0		15.0
Other Income (Expense) Net		0.4		(0.7	)		1.1		(0.2	)
Income Before Income Taxes		1.9		14.1			94.5		113.8
Income Tax Expense	0.6		3.6				24.0		28.7
Net Income	$	1.3	$	10.5		$	70.5	$	85.1

See the accompanying Notes to Financial Statements.

16

SPIRE ALABAMA INC.

CONDENSED BALANCE SHEETS

(UNAUDITED)

	June 30,			September 30,			June 30,
(Dollars in millions, except per share amounts)	2023			2022			2022
ASSETS
Utility Plant	$	2,803.8		$	2,732.6		$	2,663.0
Less: Accumulated depreciation and amortization		1,224.5			1,184.1			1,153.8
Net Utility Plant		1,579.3			1,548.5			1,509.2
Current Assets:
Cash and cash equivalents		0.5			2.4			3.7
Accounts receivable:
Utility		50.1			69.9			92.9
Associated companies		3.6			1.3			0.8
Other		6.4			6.5			5.8
Allowance for credit losses		(5.3	)		(6.3	)		(6.6	)
Delayed customer billings		1.4			4.8			1.6
Inventories:
Natural gas		51.9			72.5			69.1
Materials and supplies		20.6			16.3			15.3
Regulatory assets		43.9			56.9			52.9
Prepayments		8.8			5.8			8.3
Total Current Assets		181.9			230.1			243.8
Deferred Charges and Other Assets:
Regulatory assets		576.7			538.2			514.1
Deferred income taxes		—			11.0			5.5
Other		82.0			81.3			81.0
Total Deferred Charges and Other Assets		658.7			630.5			600.6
Total Assets	$	2,419.9		$	2,409.1		$	2,353.6

17

SPIRE ALABAMA INC.

CONDENSED BALANCE SHEETS (Continued)

(UNAUDITED)

	June 30,		September 30,		June 30,
	2023		2022		2022
CAPITALIZATION AND LIABILITIES
Capitalization:
Paid-in capital and common stock (par value $0.01 per share; 3.0 million shares authorized; 2.0 million shares issued and outstanding)	$	286.9	$	316.9	$	316.9
Retained earnings		646.6		589.1		613.7
Total Shareholder's Equity		933.5		906.0		930.6
Long-term debt		745.8		571.5		571.4
Total Capitalization		1,679.3		1,477.5		1,502.0
Current Liabilities:
Notes payable – associated companies		108.1		260.9		196.3
Accounts payable		28.2		85.6		85.7
Accounts payable – associated companies		7.2		4.4		8.1
Advance customer billings		5.9		9.9		6.1
Wages and compensation accrued		4.9		7.6		7.6
Customer deposits	19.3			19.0		18.9
Taxes accrued		31.6		31.3		29.3
Other		12.2		22.4		21.3
Total Current Liabilities		217.4		441.1		373.3
Deferred Credits and Other Liabilities:
Deferred income taxes		12.8		—		—
Pension and postretirement benefit costs		52.3		40.5		50.9
Asset retirement obligations		411.0		398.7		373.7
Regulatory liabilities		20.8		23.0		24.0
Other		26.3		28.3		29.7
Total Deferred Credits and Other Liabilities		523.2		490.5		478.3
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	$	2,419.9	$	2,409.1	$	2,353.6

See the accompanying Notes to Financial Statements.

18

SPIRE ALABAMA INC.

CONDENSED STATEMENTS OF SHAREHOLDER’S EQUITY

(UNAUDITED)

	Common Stock				Paid-in			Retained
(Dollars in millions)	Shares		Par		Capital			Earnings			Total
Three Months Ended June 30, 2023:
Balance at March 31, 2023		1,972,052	$	—	$	289.9		$	645.3		$	935.2
Net income		—		—		—			1.3			1.3
Return of capital to Spire		—		—		(3.0	)		—			(3.0	)
Balance at June 30, 2023		1,972,052	$	—	$	286.9		$	646.6		$	933.5
Nine Months Ended June 30, 2023:
Balance at September 30, 2022		1,972,052	$	—	$	316.9		$	589.1		$	906.0
Net income		—		—		—			70.5			70.5
Return of capital to Spire		—		—		(30.0	)		—			(30.0	)
Dividends declared		—		—		—			(13.0	)		(13.0	)
Balance at June 30, 2023		1,972,052	$	—	$	286.9		$	646.6		$	933.5
Three Months Ended June 30, 2022:
Balance at March 31, 2022		1,972,052	$	—	$	322.9		$	611.2		$	934.1
Net income		—		—		—			10.5			10.5
Return of capital to Spire		—		—		(6.0	)		—			(6.0	)
Dividends declared		—		—		—			(8.0	)		(8.0	)
Balance at June 30, 2022		1,972,052	$	—	$	316.9		$	613.7		$	930.6
Nine Months Ended June 30, 2022:
Balance at September 30, 2021		1,972,052	$	—	$	328.9		$	552.6		$	881.5
Net income		—		—		—			85.1			85.1
Return of capital to Spire		—		—		(12.0	)		—			(12.0	)
Dividends declared		—		—		—			(24.0	)		(24.0	)
Balance at June 30, 2022		1,972,052	$	—	$	316.9		$	613.7		$	930.6

See the accompanying Notes to Financial Statements.

19

SPIRE ALABAMA INC.

CONDENSED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	Nine Months Ended June 30,
(In millions)	2023			2022
Operating Activities:
Net Income	$	70.5		$	85.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		51.5			50.1
Deferred income taxes and investment tax credits		24.0			28.7
Changes in assets and liabilities:
Accounts receivable		16.6			(42.7	)
Inventories		16.4			(38.1	)
Regulatory assets and liabilities		(16.8	)		(67.4	)
Accounts payable		(39.9	)		41.6
Delayed/advance customer billings		(0.6	)		(0.1	)
Taxes accrued		0.3			(1.2	)
Other assets and liabilities		3.3			(17.4	)
Other		0.3			—
Net cash provided by operating activities		125.6			38.6
Investing Activities:
Capital expenditures		(98.4	)		(105.0	)
Other		0.7			0.7
Net cash used in investing activities		(97.7	)		(104.3	)
Financing Activities:
Issuance of long-term debt		175.0			—
Repayment of long-term debt		—			(50.0	)
(Repayments to) borrowings from Spire, net		(152.8	)		147.4
Return of capital to Spire		(30.0	)		(12.0	)
Dividends paid		(21.0	)		(16.0	)
Other		(1.0	)		—
Net cash (used in) provided by financing activities		(29.8	)		69.4
Net (Decrease) Increase in Cash and Cash Equivalents		(1.9	)		3.7
Cash and Cash Equivalents at Beginning of Period		2.4			—
Cash and Cash Equivalents at End of Period	$	0.5		$	3.7
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(23.3	)	$	(14.7	)
Income taxes		—			—

See the accompanying Notes to Financial Statements.

20

SPIRE INC., SPIRE MISSOURI INC. AND SPIRE ALABAMA INC.

NOTES TO FINANCIAL STATEMENTS

(UNAUDITED)

(Dollars in millions, except per share amounts)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION – These notes are an integral part of the accompanying unaudited financial statements of Spire Inc. (“Spire” or the “Company”) presented on a consolidated basis, Spire Missouri Inc. (“Spire Missouri”) and Spire Alabama Inc. (“Spire Alabama”). Spire Missouri, Spire Alabama and Spire EnergySouth Inc. (“Spire EnergySouth”) are wholly owned subsidiaries of Spire. Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth (Spire Gulf Inc. and Spire Mississippi Inc.) are collectively referred to as the “Utilities.”

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information with the instructions to Form 10-Q and Rule 10-01 of Regulation S‑X. Accordingly, they do not include all the disclosures required for complete financial statements. In the opinion of management, the accompanying unaudited financial statements include all adjustments necessary for the fair presentation of the results of operations for the periods presented. This Form 10-Q should be read in conjunction with the Notes to Financial Statements contained in Spire, Spire Missouri and Spire Alabama’s combined Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

The consolidated financial position, results of operations, and cash flows of Spire include the accounts of the Company and all its subsidiaries. Transactions and balances between consolidated entities have been eliminated from the consolidated financial statements of Spire. In compliance with GAAP, transactions between Spire Missouri and Spire Alabama and their affiliates, as well as intercompany balances on their balance sheets, have not been eliminated from their separate financial statements.

Certain information is presented by reportable segment, as described below. Effective during the first quarter of fiscal 2023, the Company changed its reportable segments to reflect changes in the way its chief operating decision maker evaluates the performance of its operations, develops strategy and allocates capital resources. Specifically, Midstream, which was formerly included in Other, is now reported separately. The Company's historical segment disclosures have been recast to be consistent with the current presentation.

NATURE OF OPERATIONS – Spire has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment consists of the regulated natural gas distribution operations of the Company and is the core business segment of Spire in terms of revenue and earnings. The Gas Utility segment is comprised of the operations of: Spire Missouri, serving St. Louis, Kansas City, and other areas in Missouri; Spire Alabama, serving central and northern Alabama; and the subsidiaries of Spire EnergySouth, serving the Mobile, Alabama area and south-central Mississippi. The Gas Marketing segment includes Spire’s largest gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The Midstream segment includes Spire Storage and Spire STL Pipeline, which are subsidiaries engaged in the storage and transportation of natural gas. The activities of the Company’s other subsidiaries are reported as Other and are described in Note 10, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment. 

The Company’s earnings are derived primarily from its Gas Utility segment. Due to the seasonal nature of the Utilities’ business and the volumetric Spire Missouri rate design, earnings are typically concentrated during the heating season of November through April each fiscal year. As a result, the interim statements of income for Spire, Spire Missouri and Spire Alabama are not necessarily indicative of annual results or representative of succeeding quarters of the fiscal year.

21

 

REGULATED OPERATIONS – The Utilities account for their regulated operations in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 980, Regulated Operations. This topic sets forth the application of GAAP for those companies whose rates are established by or are subject to approval by an independent third-party regulator. The provisions of this accounting guidance require, among other things, that financial statements of a regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. In addition, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities). Management believes that the current regulatory environment supports the continued use of these regulatory accounting principles and that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

As authorized by the Missouri Public Service Commission (MoPSC), the Mississippi Public Service Commission (MSPSC) and the Alabama Public Service Commission (APSC), the Purchased Gas Adjustment (PGA) clauses and Gas Supply Adjustment (GSA) riders allow the Utilities to pass through to customers the cost of purchased gas supplies. Regulatory assets and liabilities related to the PGA clauses and the GSA riders are both labeled Unamortized Purchased Gas Adjustments herein. See additional information about regulatory assets and liabilities in Note 5, Regulatory Matters.

DERIVATIVES – In the course of their business, certain subsidiaries of Spire enter into commitments associated with the purchase or sale of natural gas. Certain of their derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of FASB ASC Topic 815, Derivatives and Hedging. Those contracts are accounted for as executory contracts and recorded on an accrual basis. Revenues and expenses from such contracts are recorded gross. Contracts not designated as normal purchases or normal sales are recorded as derivatives with changes in fair value recognized in earnings in the periods prior to physical delivery. Certain of Spire Marketing’s wholesale purchase and sale transactions are classified as trading activities for financial reporting purposes, with income and expenses presented on a net basis in natural gas expenses in the Condensed Consolidated Statements of Income. Spire also enters into cash flow hedges through execution of interest rate swap contracts to protect itself against adverse movements in interest rates.

TRANSACTIONS WITH AFFILIATES – Transactions between affiliates of the Company have been eliminated from the consolidated financial statements of Spire. As reflected in their separate financial statements, Spire Missouri and Spire Alabama borrowed funds from the Company and incurred related interest. Spire Missouri and Spire Alabama also participated in normal intercompany shared services transactions. Spire Missouri’s and Spire Alabama’s other transactions with affiliates are presented below:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire Missouri
Purchases of natural gas from Spire Marketing	$	6.5	$	26.2	$	48.8	$	62.3
Transportation services received from Spire STL Pipeline		8.0		8.0		23.9		23.9
Sales of natural gas to Spire Marketing		0.3		—		0.4		—
Spire Alabama
Purchases of natural gas from Spire Marketing	$	1.7	$	3.2	$	2.8	$	3.2

22

 

RESTRICTED CASH AND OTHER INVESTMENTS – In Spire’s statement of cash flows for the period ended June 30, 2023, total Cash, Cash Equivalents, and Restricted Cash included $19.7, $14.0 and $14.1 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of June 30, 2023,  September 30, 2022, and June 30, 2022, respectively (in addition to amounts shown as “Cash and cash equivalents”). This restricted cash has been segregated and invested in debt securities in a trust account based on collateral requirements for reinsurance at Spire’s risk management company.

BUSINESS COMBINATIONS – A subsidiary of Spire in the Midstream segment acquired a natural gas storage facility in northern Oklahoma, now named Spire Storage Salt Plains LLC, on April 1, 2023. The $37 purchase price has been fully allocated to the assets acquired and liabilities assumed based on their fair value at the acquisition date, consisting almost entirely of base gas and other property, plant and equipment, resulting in no goodwill. Accounting for this business combination is essentially complete, but the preliminary purchase price allocation remains subject to customary adjustments as provided in the purchase agreement.

ACCRUED CAPITAL EXPENDITURES – Accrued capital expenditures, shown in the following table, are excluded from capital expenditures in the statements of cash flows until paid.

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire	$	62.2	$	77.8	$	52.6
Spire Missouri		33.4		45.6		39.2
Spire Alabama		4.5		19.2		7.7

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES – Trade accounts receivable are recorded at the amounts due from customers, including unbilled amounts. Accounts receivable are written off when they are deemed to be uncollectible. An allowance for expected credit losses is estimated and updated based on relevant data and trends such as accounts receivable aging, historical write-off experience, current write-off trends, economic conditions, and the impact of weather and availability of customer payment assistance on collection trends. For the Utilities, net write-offs as a percentage of revenue has historically been the best predictor of base net write-off experience over time. Management judgment is applied in the development of the allowance due to the complexity of variables and subjective nature of certain relevant factors. The accounts receivable of Spire’s non-utility businesses are evaluated separately from those of the Utilities. The allowance for credit losses for those other businesses is based on a continuous evaluation of the individual counterparty risk and is not significant for the periods presented. Activity in the allowance for credit losses is shown in the following table.

	Spire						Spire Missouri						Spire Alabama
Three Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	40.6		$	35.1		$	34.5		$	27.0		$	5.3		$	7.1
Provision for expected credit losses		1.2			1.9			0.3			1.8			0.8			—
Write-offs, net of recoveries		(7.1	)		(4.4	)		(6.1	)		(3.7	)		(0.8	)		(0.5	)
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

Nine Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	31.9		$	30.3		$	24.9		$	22.6		$	6.3		$	6.6
Provision for expected credit losses		13.5			8.6			11.4			8.6			1.5			—
Write-offs, net of recoveries		(10.7	)		(6.3	)		(7.6	)		(6.1	)		(2.5	)		—
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

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2. REVENUE

The following tables show revenue disaggregated by source and customer type.

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Gas Utility:
Residential	$	238.1		$	239.5		$	1,486.3		$	1,268.8
Commercial and industrial		102.2			86.2			533.1			275.6
Transportation		29.0			26.9			93.2			91.6
Off-system and other incentive		8.2			10.1			21.9			26.9
Other customer revenue		5.1			5.6			13.8			15.7
Total revenue from contracts with customers		382.6			368.3			2,148.3			1,678.6
Changes in accrued revenue under alternative revenue programs		5.2			9.1			27.0			19.7
Total Gas Utility operating revenues		387.8			377.4			2,175.3			1,698.3
Gas Marketing		23.1			64.1			157.8			171.4
Midstream		17.4			14.6			49.1			41.3
Other		4.3			4.1			12.4			12.1
Total before eliminations		432.6			460.2			2,394.6			1,923.1
Intersegment eliminations (see Note 10, Information by Operating Segment)		(14.1	)		(12.2	)		(38.7	)		(38.8	)
Total Operating Revenues	$	418.5		$	448.0		$	2,355.9		$	1,884.3

Spire Missouri
Residential	$	171.7	$	171.1		$	1,142.3	$	947.3
Commercial and industrial		61.1		51.9			369.2		140.0
Transportation		7.1		7.1			26.1		26.4
Off-system and other incentive		6.0		4.5			15.6		20.3
Other customer revenue		3.8		3.2			10.1		9.1
Total revenue from contracts with customers		249.7		237.8			1,563.3		1,143.1
Changes in accrued revenue under alternative revenue programs		4.1		(1.1	)		22.7		12.7
Total Operating Revenues	$	253.8	$	236.7		$	1,586.0	$	1,155.8

Spire Alabama
Residential	$	56.7	$	56.2	$	288.1		$	266.2
Commercial and industrial		32.7		24.0		127.8			101.6
Transportation	18.9		17.4		59.0				57.5
Off-system and other incentive		2.2		5.6		6.3			6.6
Other customer revenue		0.8		1.5		2.7			4.2
Total revenue from contracts with customers		111.3		104.7		483.9			436.1
Changes in accrued revenue under alternative revenue programs		1.8		11.0		(0.1	)		10.3
Total Operating Revenues	$	113.1	$	115.7	$	483.8		$	446.4

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Gross receipts taxes associated with the Company’s natural gas utility services are imposed on the Company, Spire Missouri, and Spire Alabama and billed to its customers. The expense amounts (shown in the table below) are reported gross in the “Taxes, other than income taxes” line in the statements of income, and corresponding revenues are reported in “Operating Revenues.”

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	26.0	$	23.3	$	116.6	$	97.1
Spire Missouri		18.9		16.7		86.6		70.6
Spire Alabama		6.1		5.5		25.5		22.5

3. EARNINGS PER COMMON SHARE

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023		2022
Basic Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Basic (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.52	$	4.17
Diluted Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Dilutive Effect of forward sales of common stock, restricted stock and restricted stock units (in millions)*		—			—			0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.5			52.2			52.6		52.0
Diluted (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.51	$	4.16
* Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future		2.7			0.2			2.5		0.2

4. SHAREHOLDERS’ EQUITY

ATM Program

On February 6, 2019, Spire entered into an “at-the-market” (ATM) equity distribution agreement, supplemented as of May 14, 2019, pursuant to which the Company may offer and sell, from time to time, shares of its common stock (including shares of common stock that may be sold pursuant to forward sale agreements entered into in connection with the ATM equity distribution agreement). On April 28, 2022, Spire's board approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 through May 2025.

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Settled sales under this ATM program are included in “Common stock issued” in the Condensed Consolidated Statements of Shareholders’ Equity. Also, in the second and third quarters of fiscal 2023, Spire executed forward sale agreements for 228,690 shares and 2,087,231 shares, respectively, of its common stock. The third quarter forward sales included a block sale of 1,744,549 shares which must be settled on or before December 28, 2023. All the other forward sales must be settled by the end of  September 2023. As of July 31, 2023, no shares of common stock have been settled under the forward sale agreements. Had all shares under the forward agreements been settled as of June 30, 2023, it would have generated net proceeds of $149.7.

As of June 30, 2023, under the ATM program, Spire may sell additional shares with an aggregate offering price of up to $17.9.

5. REGULATORY MATTERS

As explained in Note 1, Summary of Significant Accounting Policies, the Utilities account for regulated operations in accordance with FASB ASC Topic 980, Regulated Operations. The following regulatory assets and regulatory liabilities were reflected in the balance sheets of the Company, Spire Missouri and Spire Alabama as of June 30, 2023, September 30, 2022, and June 30, 2022.

	June 30,		September 30,		June 30,
Spire	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	66.2	$	322.2	$	123.4
Other		27.1		33.2		28.6
Total Current Regulatory Assets		93.3		355.4		152.0
Noncurrent:
Pension and postretirement benefit costs		268.8		294.5		317.5
Cost of removal		597.9		493.7		471.9
Future income taxes due from customers		140.1		137.8		140.4
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Other		152.3		129.2		124.3
Total Noncurrent Regulatory Assets		1,421.2		1,112.4		1,205.6
Total Regulatory Assets	$	1,514.5	$	1,467.8	$	1,357.6
Regulatory Liabilities:
Current:
Other	$	5.5	$	3.7	$	3.2
Total Current Regulatory Liabilities		5.5		3.7		3.2
Noncurrent:
Deferred taxes due to customers		131.8		145.3		148.7
Pension and postretirement benefit costs		165.3		172.6		185.0
Accrued cost of removal		107.7		32.9		40.7
Unamortized purchased gas adjustments		—		53.0		—
Other		23.3		14.4		14.6
Total Noncurrent Regulatory Liabilities		428.1		418.2		389.0
Total Regulatory Liabilities	$	433.6	$	421.9	$	392.2

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	June 30,		September 30,		June 30,
Spire Missouri	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	32.9	$	275.1	$	89.7
Other		2.1		13.0		0.2
Total Current Regulatory Assets		35.0		288.1		89.9
Noncurrent:
Future income taxes due from customers		131.8		129.2		131.8
Pension and postretirement benefit costs		193.4		222.9		238.5
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Cost of removal		95.3		25.2		34.9
Other		136.5		113.1		107.9
Total Noncurrent Regulatory Assets		819.1		547.6		664.6
Total Regulatory Assets	$	854.1	$	835.7	$	754.5
Regulatory Liabilities:
Noncurrent:
Deferred taxes due to customers	$	118.1	$	127.9	$	131.3
Pension and postretirement benefit costs		137.9		143.6		154.5
Accrued cost of removal		72.3		—		7.3
Unamortized purchased gas adjustments		—		53.0		—
Other		17.8		7.3		7.7
Total Noncurrent Regulatory Liabilities		346.1		331.8		300.8
Total Regulatory Liabilities	$	346.1	$	331.8	$	300.8

	June 30,		September 30,		June 30,
Spire Alabama	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	30.9	$	43.8	$	31.6
Other		13.0		13.1		21.3
Total Current Regulatory Assets		43.9		56.9		52.9
Noncurrent:
Future income taxes due from customers		2.0		2.2		2.2
Pension and postretirement benefit costs		71.1		66.5		73.8
Cost of removal		502.6		468.5		437.0
Other		1.0		1.0		1.1
Total Noncurrent Regulatory Assets		576.7		538.2		514.1
Total Regulatory Assets	$	620.6	$	595.1	$	567.0
Regulatory Liabilities:
Noncurrent:
Pension and postretirement benefit costs	$	17.3	$	19.4	$	20.4
Other		3.5		3.6		3.6
Total Noncurrent Regulatory Liabilities		20.8		23.0		24.0
Total Regulatory Liabilities	$	20.8	$	23.0	$	24.0

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A portion of the Company’s and Spire Missouri’s regulatory assets are not earning a return, as shown in the table below:

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		138.0		135.6		138.2
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	606.9	$	686.3	$	622.1
Spire Missouri
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		131.8		129.2		131.8
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	600.7	$	679.9	$	615.7

Like all the Company’s regulatory assets, these regulatory assets as of June 30, 2023 are expected to be recovered from customers in future rates. The recovery period for the future income taxes due from customers and pension and other postretirement benefit costs could be 20 years or longer, based on current Internal Revenue Service guidelines and average remaining service life of active participants, respectively. The recovery period for the PGA assets is less than two years. The other items not earning a return are expected to be recovered over a period not to exceed 15 years, consistent with precedent set by the MoPSC, except for certain debt costs expected to be recovered over the related debt term, up to 35 years. Spire Alabama does not have any regulatory assets that are not earning a return.

Spire Missouri

In mid- February 2021, the central U.S. experienced a period of unusually severe cold weather (“Winter Storm Uri”), and Spire Missouri implemented an Operational Flow Order (OFO) to preserve the integrity of its distribution system. During this time, Spire Missouri was required to purchase additional natural gas supply, both to ensure adequate supply for its firm utility customers, and to cover the shortfall created when third-party marketers failed to deliver natural gas supply to its city gates on behalf of their customers. In accordance with its MoPSC-approved OFO tariff, Spire Missouri invoiced the cost of gas and associated penalties totaling $195.8 to non-compliant marketers and recorded accounts receivable. Recoveries collected are an offset to cost of natural gas for firm utility customers through the Purchased Gas Adjustment (PGA) and Actual Cost Adjustment (ACA), so are net income neutral to Spire Missouri. The three largest counterparties did not remit payment when due, so Spire Missouri filed suit against them in federal court to recover the invoiced amounts. In late February 2022, the parties to the OFO waiver suits agreed to a settlement in principle, pursuant to which marketers will reimburse Spire Missouri for the actual cost of its incremental gas purchases to serve marketers’ customers during Winter Storm Uri, so Spire Missouri reduced revenue, accounts receivable, cost of gas and regulatory liabilities by approximately $150 in the second quarter of fiscal 2022. The settlement, which reduced the total amount due from the three marketers to approximately $42, was approved by the MoPSC in late May 2022, and the marketers are making timely payments to Spire Missouri.

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In the first quarter of fiscal 2022, the MoPSC approved Spire Missouri compliance tariffs with an effective date of December 23, 2021 consistent with its order in Spire Missouri's general rate case. These new tariffs were designed to increase Spire Missouri’s aggregate annual gross base rate revenues by $72.2, which includes $24.9 incremental and $47.3 already being collected through the Infrastructure System Replacement Surcharge (ISRS). The MoPSC required Spire Missouri to defer all non-operational overheads from December 23, 2021 through September 30, 2022 into a regulatory asset totaling $42.8. On April 1, 2022, Spire Missouri filed tariff sheets to initiate a new general rate case proceeding intended to address the deferred amounts, along with other matters. The parties reached a Full Unanimous Stipulation and Agreement (the “Stipulation”) to resolve all issues in the case, which was filed with the MoPSC on November 4, 2022. On November 18, 2022, the Stipulation was approved, including authorization of $78.0 in new base rate revenue (including $19.0 already being collected through ISRS) and recovery of deferred overheads through amortization of the related regulatory asset. New base rates became effective on December 26, 2022.

The ISRS allows Spire Missouri expedited recovery for its investment to replace qualifying components of its infrastructure without the necessity of a formal rate case. As noted above, all prior ISRS revenues were reset to zero as of December 26, 2022 as a result of Spire Missouri's most recent base rate case. On April 20, 2023, the MoPSC approved an incremental annual ISRS revenue increase of $7.7, effective May 6, 2023, reflecting eligible pipe replacement from October 2022 through February 2023. On June 20, 2023, Spire Missouri filed for an additional annual ISRS revenue increase of $14.2 based on actual replacements during March 2023 through May 2023 and estimates for June 2023 through August 2023. A decision on this application is required by December 17, 2023.

The Utilities purchase the natural gas to be delivered to their customers and typically defer the recovery of this expense thereby lessening the immediate impact on customers’ bills of higher realized commodity costs. These deferred gas balances are expected to be recovered over the next 12 months pursuant to tariff adjustments effective in Missouri (and Alabama). Spire Missouri filed Purchase Gas Adjustment (PGA) changes to its tariff in November and January which were approved and became effective November 29, 2022 and January 19, 2023, respectively.

On May 27, 2022, the MoPSC staff filed an ACA Review Recommendation and Report for the ACA period that first includes transportation charges incurred by Spire Missouri for service on the Spire STL Pipeline. That report concluded that the transaction complied with Missouri affiliate transaction rules and was prudent, and it recommended no disallowance of any Spire STL Pipeline related costs from the ACA mechanism. On July 11, 2022, Spire Missouri filed its response comments in support of the recommendation. The Missouri Office of the Public Counsel and Environmental Defense Fund (EDF) filed comments on July 29 and August 1, 2022, respectively, raising concerns about the Spire STL Pipeline transaction, the ACA process itself, and other matters. On January 6, 2023, Spire Missouri filed a Partial Stipulation and Agreement resolving all other issues raised by the MoPSC staff in its Recommendation and Report. The partial stipulation was approved by the MoPSC on January 25, 2023, resulting in a $0.6 credit to the ACA balance, but issues relating to Spire STL Pipeline costs remained contested. On April 28, 2023, MoPSC Staff and its consultant filed direct testimony confirming their position that the transaction was prudent and in compliance with Missouri affiliate transaction rules. EDF also filed direct testimony arguing Spire Missouri imprudently changed the physical manner in which it receives supply and created risk for customers, and advocating for a disallowance of $27.7 in the case. No other parties filed direct testimony. MoPSC staff, Spire Missouri, and EDF have filed rebuttal and sur-rebuttal testimony. An evidentiary hearing on this matter was scheduled to be held  July 25-26, 2023; however, on July 21, 2023, MoPSC suspended the procedural schedule in recognition that the parties had reached an agreement in principle to resolve the matter via settlement stipulation. The settlement stipulation is anticipated to be filed in early August and will require approval by the MoPSC. We anticipate the stipulation to include non-monetary items and an increase in customer assistance program funding.

The MoPSC has initiated their annual ACA dockets (GR-2022-0135 and GR-2022-0136) to audit gas commodity and transportation costs for the 2020-2021 heating season, which includes the impact of Winter Storm Uri on Spire Missouri's natural gas portfolio. On December 15, 2022, the MoPSC staff filed its Reports and Recommendations in these cases proposing various disallowances relating to imbalance cash-outs and an off-system sale. On July 12, 2023, the MoPSC entered a scheduling order in this matter which includes several rounds of pre-filed testimony prior to an evidentiary hearing to be held in early May 2024.

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Spire Alabama

On October 26, 2022, Spire Alabama made its annual Rate Stabilization and Equalization (RSE) rate filing with the APSC, presenting the utility’s budget for the fiscal year ending September 30, 2023, including net income and a calculation of allowed return on average common equity (ROE). The budget reflected the start of amortization of the accumulated deferred income tax (ADIT) adjustment related to the Tax Cuts and Jobs Act of 2017 (TCJA). New rates designed to provide an annual revenue increase of $15.0 became effective January 1, 2023.

Spire Alabama filed GSA rate increases effective December 1, 2022, and January 1, 2023, primarily attributable to higher natural gas prices.

Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is affected by the following regulatory matters.

In October 2022, Spire Gulf made its annual RSE rate filing with the APSC based on its budget for fiscal 2023 and an allowed ROE of 9.95%. The budget reflected the start of amortization of the excess ADIT from the TCJA. New rates designed to provide an annual revenue increase of $2.5 became effective January 1, 2023. Spire Gulf filed its RSE point of test as of April 30, 2023 with the APSC reflecting that its projected ROE exceeded the allowed ROE resulting in an annual refund of $1.8 that became effective July 1, 2023.

On September 14, 2022, Spire Mississippi filed its Rate Stabilization Adjustment Rider with the Mississippi Public Service Commission (MSPSC) for the rate year ended June 30, 2022, which reflected an increase to annual revenues of $1.3. The MSPSC, by its order dated December 6, 2022, approved a stipulation agreement between the Mississippi Public Utility Staff and Spire Mississippi that provides for an annual revenue increase of $0.8 through rates that became effective on January 1, 2023.

In August 2018, the FERC approved an order issuing Certificates of Public Convenience and Necessity (“FERC Certificates”) for the Spire STL Pipeline ( “August 2018 Order”). In November 2019, the FERC issued an Order on Rehearing of the August 2018 Order dismissing or denying the outstanding requests for rehearing filed by several parties, dismissing the request for stay filed by one party, and noting the withdrawal of the request for rehearing by another party. In January 2020, two of the rehearing parties filed petitions for review of the FERC’s orders with the U.S. Court of Appeals for the District of Columbia Circuit (“DC Circuit”). On June 22, 2021, the DC Circuit issued an order vacating the FERC Certificates and remanding the matter back to the FERC for further action. On September 14, 2021 and December 3, 2021, the FERC issued temporary certificates for the continued authorized operation of the Spire STL Pipeline pending the outcome of its determination on remand. On December 15, 2022, the FERC issued its order on remand reissuing permanent FERC Certificates for the continued operation of Spire STL Pipeline. On January 17, 2023, EDF requested rehearing of the December 15, 2022 FERC order, but on February 17, 2023, that rehearing request was denied by operation of law. On April 20, 2023, the FERC issued an “Order Addressing Arguments Raised on Rehearing” in which it further clarified the rationale for denying EDF's rehearing request. No party filed a timely appeal of this denial in any federal appellate court. Accordingly, the FERC order reissuing permanent certificates for the Spire STL Pipeline is now final and unappealable.

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6. FINANCING

Short-term

Spire, Spire Missouri and Spire Alabama have a syndicated revolving credit facility pursuant to a loan agreement with 12 banks, which was amended July 22, 2022, to increase the commitment and sublimits and extend the agreement through July 22, 2027. The amended loan agreement has an aggregate credit commitment of $1,300.0, including sublimits of $450.0 for the Spire holding company, $575.0 for Spire Missouri and $275.0 for Spire Alabama. These sublimits may be reallocated from time to time among the three borrowers within the $1,300.0 aggregate commitment, with commitment fees and interest margins applied for each borrower relative to its credit rating, as well as sustainability rate adjustments based on Spire's DART (“Days Away Restricted or Transferred”) rate and methane emissions reductions. The Spire holding company may use its line to provide for the funding needs of various subsidiaries. The agreement also contains financial covenants limiting each borrower's consolidated total debt, including short-term debt, to no more than 70% of its total capitalization. As defined in the line of credit, on June 30, 2023, total debt was less than 65% of total capitalization for each borrower. There were no borrowings against this credit facility as of June 30, 2023.

Spire utilizes a commercial paper program (“CP Program”) pursuant to which Spire may issue short-term, unsecured commercial paper notes. Amounts available under the CP Program may be borrowed, repaid and re-borrowed from time to time, with the aggregate face or principal amount of the notes outstanding under the CP Program at any time not to exceed $1,300.0. The notes may have maturities of up to 365 days from date of issue.

On January 5, 2023, Spire Missouri entered into a loan agreement with several banks for a $250.0 unsecured term loan due October 5, 2023. Interest was based on the secured overnight financing rate (“SOFR”) plus an adjustment of 0.10% per annum plus a margin of 0.80% per annum. The loan was repaid on May 8, 2023.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of June 30, 2023, $375.2 of Spire’s CP Program borrowings was used to support lending to the Utilities.

	Spire (Parent Only)			Spire Missouri						Spire Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Nine Months Ended June 30, 2023
Highest borrowings outstanding	$	1,282.0		$	250.0		$	656.9		$	274.0		$	1,482.0
Lowest borrowings outstanding		354.4			—			3.8			76.7			489.0
Weighted average borrowings		778.7			89.4			308.9			123.3			868.1
Weighted average interest rate		4.7	%		5.5	%		4.6	%		4.8	%		4.8	%
As of June 30, 2023
Borrowings outstanding	$	557.6		$	—		$	228.1		$	108.1		$	557.6
Weighted average interest rate		5.5	%		—	%		5.5	%		5.5	%		5.5	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		n/a			3.3	%		3.3	%		3.3	%
As of June 30, 2022
Borrowings outstanding	$	709.2		$	—		$	285.4		$	196.3		$	709.2
Weighted average interest rate		2.0	%		n/a			2.0	%		2.0	%		2.0	%

31

 

Long-term

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of June 30, 2023, there were no events of default under these financial covenants.

Interest expense shown on the statements of income is net of the capitalized interest amounts shown in the following table.

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	2.3	$	1.1	$	5.8	$	3.2
Spire Missouri		1.0		0.2		2.1		0.3
Spire Alabama		0.5		0.9		1.8		2.5

On  October 13, 2022, Spire Alabama issued $90.0 of notes due  October 15, 2029, bearing interest at 5.32% and $85.0 of notes due  October 15, 2032, bearing interest at 5.41%. Interest is payable semi-annually. The notes are senior unsecured obligations and rank equal in right to payment with all other senior unsecured indebtedness of Spire Alabama. Also on  October 13, 2022, Spire Gulf issued $30.0 of first mortgage bonds due  October 15, 2037, bearing interest at 5.61% payable semi-annually. The bonds rank equal in right to payment with the other first mortgage bonds issued by Spire Gulf. The bonds were issued under a supplemental indenture with collateral fall away provisions whereby, under certain conditions, Spire Gulf  may elect to exchange the bonds, which are secured, for unsecured notes.

On February 13, 2023, Spire Missouri issued $400.0 aggregate principal amount of its 4.800% Series First Mortgage Bonds due 2033. Interest is payable semi-annually. The notes are senior secured indebtedness of Spire Missouri and rank equally with all other existing and future senior secured indebtedness issued by Spire Missouri under its mortgage and deed of trust. The bonds are secured by a first mortgage lien on substantially all of the real properties of Spire Missouri, subject to limited exceptions.

On March 7, 2023, Spire issued $150.0 aggregate principal amount of its 5.80% Series 2023 Senior Notes due March 15, 2033. Interest is payable semi-annually. The notes are senior unsecured obligations of the Company.

In the quarter ended March 31, 2023, the company settled interest rate swap contracts with a notional amount of $325.0 and a realized gain of $39.5. This gain is being amortized against the interest expense related to the 10-year debt issued during that quarter (described in the previous two paragraphs).

7. FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying amounts of cash and cash equivalents, notes receivable, and short-term debt approximate fair value due to the short maturity of these instruments. The fair values of long-term debt are estimated based on market prices for similar issues. Refer to Note 8, Fair Value Measurements, for information on financial instruments measured at fair value on a recurring basis.

32

 

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis are shown in the following tables, classified according to the fair value hierarchy. There were no such instruments classified as Level 3 (significant unobservable inputs) as of June 30, 2023, September 30, 2022, and June 30, 2022.

					Classification of Estimated Fair Value
	Carrying Amount		Fair Value		Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)
Spire
As of June 30, 2023
Cash and cash equivalents	$	5.3	$	5.3	$	5.3	$	—
Notes payable		557.6		557.6		—		557.6
Long-term debt, including current portion		3,959.9		3,650.7		—		3,650.7
As of September 30, 2022
Cash and cash equivalents	$	6.5	$	6.5	$	6.5	$	—
Notes payable		1,037.5		1,037.5		—		1,037.5
Long-term debt, including current portion		3,239.7		2,851.8		—		2,851.8
As of June 30, 2022
Cash and cash equivalents	$	16.0	$	16.0	$	16.0	$	—
Notes payable		709.2		709.2		—		709.2
Long-term debt, including current portion		3,239.1		3,032.1		—		3,032.1
Spire Missouri
As of June 30, 2023
Notes payable – associated companies	$	228.1	$	228.1	$	—	$	228.1
Long-term debt, including current portion		2,035.1		1,890.2		—		1,890.2
As of September 30, 2022
Notes payable – associated companies	$	445.3	$	445.3	$	—	$	445.3
Long-term debt, including current portion		1,637.7		1,473.9		—		1,473.9
As of June 30, 2022
Cash and cash equivalents	$	7.0	$	7.0	$	7.0	$	—
Notes payable – associated companies		285.4		285.4		—		285.4
Long-term debt		1,637.4		1,562.4		—		1,562.4
Spire Alabama
As of June 30, 2023
Cash and cash equivalents	$	0.5	$	0.5	$	0.5	$	—
Notes payable – associated companies		108.1		108.1		—		108.1
Long-term debt		745.8		681.5		—		681.5
As of September 30, 2022
Cash and cash equivalents	$	2.4	$	2.4	$	2.4	$	—
Notes payable – associated companies		260.9		260.9		—		260.9
Long-term debt		571.5		485.0		—		485.0
As of June 30, 2022
Cash and cash equivalents	$	3.7	$	3.7	$	3.7	$	—
Notes payable – associated companies		196.3		196.3		—		196.3
Long-term debt		571.4		527.2		—		527.2

33

 

8. FAIR VALUE MEASUREMENTS

The information presented in the following tables categorizes the assets and liabilities in the balance sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.

The mutual funds included in Level 1 are valued based on exchange-quoted market prices of individual securities.

Derivative instruments included in Level 1 are valued using quoted market prices on the New York Mercantile Exchange (NYMEX) or the Intercontinental Exchange (ICE), and also certain natural gas commodity contracts. Derivative instruments classified in Level 2 include derivatives that are valued using broker or dealer quotation services or published benchmarks whose prices are derived principally from, or are corroborated by, observable market inputs. Also included in Level 2 are certain derivative instruments that have values that are similar to, and correlate with, quoted prices for exchange-traded instruments or in active markets. Derivative instruments included in Level 3 are valued using generally unobservable inputs that are based upon the best information available and reflect management’s assumptions about how market participants would price the asset or liability. There were no Level 3 balances as of June 30, 2023, September 30, 2022, and June 30, 2022. The Company’s and the Utilities’ policy is to recognize transfers between the levels of the fair value hierarchy, if any, as of the beginning of the interim reporting period in which circumstances change or events occur to cause the transfer.

The mutual funds are included in “Other Investments” on the Company’s balance sheets and in “Other Property and Investments” on Spire Missouri’s balance sheets. Changes in their recurring valuations are recorded as unrealized gains or losses in the corresponding income statement. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net in the balance sheets when a legally enforceable netting agreement exists between the Company, Spire Missouri, or Spire Alabama and the counterparty to a derivative contract.

Spire

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
Gas Marketing:
NYMEX/ICE natural gas contracts		10.5		—		(10.5	)		—
Natural gas commodity contracts		35.8		—		(1.0	)		34.8
Other:
U.S. stock/bond mutual funds		31.4		—		—			31.4
Interest rate swaps		—		22.8		—			22.8
Total	$	99.1	$	22.8	$	(11.5	)	$	110.4
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		24.3		—		(24.3	)		—
Natural gas commodity contracts		34.9		—		(1.0	)		33.9
Other:
Interest rate swaps		—		0.8		—			0.8
Total	$	104.7	$	0.8	$	(70.8	)	$	34.7

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	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of September 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		91.8		—		(91.8	)		—
Natural gas commodity contracts		56.6		—		(4.0	)		52.6
Other:
U.S. stock/bond mutual funds		29.3		—		—			29.3
Interest rate swaps		—		63.6		—			63.6
Total	$	254.6	$	63.6	$	(153.6	)	$	164.6
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		82.3		—		(82.3	)		—
Natural gas commodity contracts		65.5		—		(4.0	)		61.5
Total	$	178.5	$	—	$	(117.0	)	$	61.5
As of June 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		94.2		—		(94.2	)		—
Natural gas commodity contracts		57.6		—		(5.3	)		52.3
Other:
U.S. stock/bond mutual funds		31.6		—		—			31.6
Interest rate swaps		—		52.7		(7.6	)		45.1
Total	$	243.3	$	52.7	$	(146.7	)	$	149.3
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		60.8		—		(60.8	)		—
Natural gas commodity contracts		118.3		—		(5.3	)		113.0
Other:
Interest rate swaps		—		7.6		(7.6	)		—
Total	$	191.9	$	7.6	$	(86.5	)	$	113.0

35

 

Spire Missouri

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
LIABILITIES
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Total	$	45.5	$	—	$	(45.5	)	$	—
As of September 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Total	$	76.9	$	—	$	(57.8	)	$	19.1
LIABILITIES
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
As of June 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Total	$	59.9	$	—	$	(39.6	)	$	20.3
LIABILITIES
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—

36

 

9. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

Spire and the Utilities maintain pension plans for their employees.

Spire Missouri and Spire Alabama have non-contributory, defined benefit, trusteed forms of pension plans covering the majority of their employees. Qualified plan assets are comprised of mutual and commingled funds consisting of U.S. equities with varying strategies, global equities, alternative investments, and fixed income investments.

The net periodic pension cost includes components shown in the following tables. The components other than the service costs and regulatory adjustment are presented in “Other Income, Net” in the income statement, except for Spire Alabama’s losses on lump-sum settlements. Such losses are capitalized in regulatory balances and amortized over the remaining actuarial life of individuals in the plan, and that amortization is presented in “Other Income, Net.”

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	4.2		$	4.8		$	12.2		$	15.6
Interest cost on projected benefit obligation		6.6			5.4			18.9			15.8
Expected return on plan assets		(6.4	)		(7.7	)		(18.5	)		(24.1	)
Amortization of prior service credit		(1.1	)		(1.1	)		(3.4	)		(3.4	)
Amortization of actuarial loss		1.5			2.5			4.7			9.8
Loss on lump-sum settlements		—			17.8			8.6			29.5
Subtotal		4.8			21.7			22.5			43.2
Regulatory adjustment		6.1			(6.9	)		18.3			2.5
Net pension cost	$	10.9		$	14.8		$	40.8		$	45.7
Spire Missouri
Service cost – benefits earned during the period	$	2.8		$	3.5		$	8.5		$	11.2
Interest cost on projected benefit obligation		4.5			3.8			13.4			10.9
Expected return on plan assets		(4.5	)		(5.7	)		(13.5	)		(17.6	)
Amortization of prior service credit		(0.5	)		(0.5	)		(1.5	)		(1.5	)
Amortization of actuarial loss		1.5			2.0			4.6			7.6
Loss on lump-sum settlements		—			17.3			—			24.1
Subtotal		3.8			20.4			11.5			34.7
Regulatory adjustment		3.4			(8.3	)		19.6			1.3
Net pension cost	$	7.2		$	12.1		$	31.1		$	36.0
Spire Alabama
Service cost – benefits earned during the period	$	1.3		$	1.1		$	3.2		$	3.8
Interest cost on projected benefit obligation		1.5			1.1			3.6			3.4
Expected return on plan assets		(1.1	)		(1.2	)		(2.7	)		(4.0	)
Amortization of prior service credit		(0.6	)		(0.6	)		(1.8	)		(1.8	)
Amortization of actuarial loss		0.1			0.5			0.4			2.2
Loss on lump-sum settlements		—			0.5			8.6			5.4
Subtotal		1.2			1.4			11.3			9.0
Regulatory adjustment		2.4			1.1			(2.0	)		0.5
Net pension cost	$	3.6		$	2.5		$	9.3		$	9.5

37

 

Pursuant to the provisions of Spire Missouri’s and Spire Alabama’s pension plans, pension obligations may be satisfied by monthly annuities, lump-sum cash payments, or special termination benefits. Lump-sum payments are recognized as settlements (which can result in gains or losses) only if the total of such payments exceeds the sum of service and interest costs in a specific year. Special termination benefits, when offered, are also recognized as settlements which can result in gains or losses. For the three and nine months ended June 30, 2023, two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $27.5 for the Spire Alabama plans. The lump-sum settlement resulted in a loss of $8.6 for Spire Alabama. For the remeasurement, the discount rate for both of the Spire Alabama plans was updated to 5.6%, from 5.7% for one plan and 5.65% for the other plan, at September 30, 2022. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 13.4 years for one plan and 12.4 years for the other plan. Therefore, no lump sum settlement expense was recorded in the nine months ended June 30, 2023.

For the three months ended June 30, 2022, one Spire Missouri plan and two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $47.4 for the Spire Missouri plan and $3.6 for the Spire Alabama plans. The lump-sum settlement resulted in losses of $17.3 and $0.5 for Spire Missouri and Spire Alabama, respectively. For the remeasurement, the discount rate for the Spire Missouri plan was updated to 4.55% from 3.6% at February 28, 2022, and the discount rates for the Spire Alabama plans were also updated to 4.55% from 3.6% at February 28, 2022. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 13.0 years for the one plan and 11.1 years for the second plan. Therefore, no lump sum settlement expense was recorded in the period ended June 30, 2022.

For the three months ended March 31, 2022, one Spire Missouri plan and two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $21.6 for the Spire Missouri plan and $17.4 for the Spire Alabama plans. The lump-sum settlement resulted in losses of $6.8 and $4.9 for Spire Missouri and Spire Alabama, respectively. For the remeasurement, the discount rate for the Spire Missouri plan was updated to 3.6% from 3.0% at September 30, 2021, and the discount rates for the Spire Alabama plans were updated to 3.6% from 3.0% for the first plan and 3.1% for the second plan at September 30, 2021. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 12.3 years for the one plan and 12.6 years for the second plan. Therefore, no lump sum settlement expenses were recorded in the period ended  March 31, 2022.

Effective December 23, 2021, the pension cost for Spire Missouri’s western territory (Missouri West) included in customer rates was reduced from $5.5 to $4.4 per year, the pension cost included in Spire Missouri’s eastern territory (Missouri East) customer rates was increased from $29.0 to $32.4 per year. Subsequently, on December 26, 2022, the amount in Missouri East was lowered to $29.9. The difference between these amounts and pension expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability.

Also effective December 23, 2021, Missouri East prepaid pension assets and other postretirement benefits that were previously being included in rates at $21.6 per year for eight years were reduced to $11.0 per year, with the amortization period being reset for another eight years. Missouri West net liability for pension and other postretirement benefits that were previously reducing rates by $3.3 per year for eight years were reduced to a $1.1 reduction in rates per year, with the amortization period being reset for another eight years. Subsequently, on December 26, 2022, Missouri East amortization was lowered to $6.9 and Missouri West to a reduction of $0.8.

The funding policy of the Utilities is to contribute an amount not less than the minimum required by government funding standards, nor more than the maximum deductible amount for federal income tax purposes. Fiscal 2023 contributions to Spire Missouri’s pension plans through June 30, 2023 were $29.7 to the qualified trusts and none to non-qualified plans. Fiscal 2023 contributions to the Spire Alabama pension plans through June 30, 2023 were $2.8. No additional contributions to the qualified trusts of Spire Missouri’s pension plans are anticipated for the remainder of fiscal 2023. Contributions to Spire Alabama’s pension plans for the remainder of fiscal 2023 are anticipated to be $25.0.

38

 

Other Postretirement Benefits

Spire and the Utilities provide certain life insurance benefits at retirement. Spire Missouri plans provide for medical insurance after early retirement until age 65. For retirements prior to January 1, 2015, certain Spire Missouri plans provided medical insurance after retirement until death. The Spire Alabama plans provide medical insurance upon retirement until death for certain retirees depending on the type of employee and the date the employee was originally hired.

The net periodic postretirement benefit cost includes components shown in the following tables. The components other than the service costs and regulatory adjustment are presented in “Other Income, Net” in the income statement, except in the event Spire Alabama incurs losses on lump-sum settlements. Any such losses are capitalized in regulatory balances and amortized over the remaining actuarial life of individuals in the plan, and that amortization is presented in “Other Income, Net.”

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	1.2		$	1.9		$	3.6		$	5.8
Interest cost on accumulated postretirement benefit obligation		2.0			1.6			6.3			4.6
Expected return on plan assets		(4.0	)		(4.3	)		(11.8	)		(12.8	)
Amortization of prior service cost		0.1			0.3			0.2			0.8
Amortization of actuarial gain		(0.9	)		(0.5	)		(3.0	)		(1.7	)
Subtotal		(1.6	)		(1.0	)		(4.7	)		(3.3	)
Regulatory adjustment		(0.5	)		(0.1	)		(0.2	)		3.2
Net postretirement benefit income	$	(2.1	)	$	(1.1	)	$	(4.9	)	$	(0.1	)
Spire Missouri
Service cost – benefits earned during the period	$	1.0		$	1.6		$	3.0		$	4.8
Interest cost on accumulated postretirement benefit obligation		1.6			1.2			4.9			3.4
Expected return on plan assets		(2.6	)		(2.9	)		(7.9	)		(8.6	)
Amortization of prior service cost		0.1			0.2			0.4			0.6
Amortization of actuarial gain		(0.8	)		(0.5	)		(2.4	)		(1.5	)
Subtotal		(0.7	)		(0.4	)		(2.0	)		(1.3	)
Regulatory adjustment		(0.2	)		0.4			1.1			4.5
Net postretirement benefit cost	$	(0.9	)	$	—		$	(0.9	)	$	3.2
Spire Alabama
Service cost – benefits earned during the period	$	0.2		$	0.3		$	0.5		$	0.9
Interest cost on accumulated postretirement benefit obligation		0.4			0.4			1.3			1.1
Expected return on plan assets		(1.3	)		(1.3	)		(3.8	)		(3.9	)
Amortization of prior service (credit) cost		—			0.1			(0.2	)		0.2
Amortization of actuarial gain		(0.1	)		—			(0.4	)		—
Subtotal		(0.8	)		(0.5	)		(2.6	)		(1.7	)
Regulatory adjustment		(0.5	)		(0.5	)		(1.4	)		(1.4	)
Net postretirement benefit income	$	(1.3	)	$	(1.0	)	$	(4.0	)	$	(3.1	)

39

 

Missouri and Alabama state laws provide for the recovery in rates of costs accrued pursuant to GAAP provided that such costs are funded through an independent, external funding mechanism. The Utilities have established Voluntary Employees’ Beneficiary Association (VEBA) and Rabbi Trusts as external funding mechanisms. The assets of the VEBA and Rabbi Trusts consist primarily of money market securities and mutual funds invested in stocks and bonds.

Effective December 23, 2021, the $8.6 allowance for recovery in rates for Spire Missouri’s postretirement benefit plans was discontinued. The difference between no recovery in rates and pension expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability. Effective with the resolution of the 2022 Missouri rate case in December 2022, net liabilities for postretirement benefits will reduce rates $0.9 and $0.1 per year for Missouri East and Missouri West, respectively.

The Utilities’ funding policy is to contribute amounts to the trusts equal to the periodic benefit cost calculated pursuant to GAAP as recovered in rates. There have been no contributions to the postretirement plans through June 30, 2023 for Spire Missouri or Spire Alabama, and none are expected to be required for the remainder of the fiscal year.

10. INFORMATION BY OPERATING SEGMENT

The Company has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment is the aggregation of the operations of the Utilities. The Gas Marketing segment includes the results of Spire Marketing, a subsidiary engaged in the non-regulated marketing of natural gas and related activities, including utilizing natural gas storage contracts for providing natural gas sales. The Midstream segment includes Spire STL Pipeline, a subsidiary of Spire providing interstate natural gas pipeline transportation services, and Spire Storage, subsidiaries of Spire providing interstate and intrastate natural gas storage services. Other components of the Company’s consolidated information include Spire's subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

Accounting policies are described in Note 1, Summary of Significant Accounting Policies. Intersegment transactions include sales of natural gas from Spire Marketing to Spire Missouri, Spire Alabama and Spire Storage, sales of natural gas from Spire Missouri to Spire Marketing, storage services from Spire Storage to Spire Marketing, and natural gas transportation services provided by Spire STL Pipeline to Spire Missouri and Spire Marketing. 

Management evaluates the performance of the operating segments based on the computation of net economic earnings. Net economic earnings exclude from reported net income the after-tax impacts of fair value accounting and timing adjustments associated with energy-related transactions, the impacts of acquisition, divestiture and restructuring activities, and the largely non-cash impacts of impairments and other non-recurring or unusual items such as certain regulatory, legislative, or GAAP standard-setting actions.

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	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	387.5		$	23.1		$	7.7	$	0.2		$	—		$	418.5
Intersegment revenues		0.3			—			9.7		4.1			(14.1	)		—
Total Operating Revenues		387.8			23.1			17.4		4.3			(14.1	)		418.5
Operating Expenses:
Natural gas		154.6			25.3			—		—			(10.1	)		169.8
Operation and maintenance		111.7			4.2			8.1		5.5			(4.0	)		125.5
Depreciation and amortization		61.7			0.3			2.1		0.2			—			64.3
Taxes, other than income taxes		45.9			0.4			0.7		(0.1	)		—			46.9
Total Operating Expenses		373.9			30.2			10.9		5.6			(14.1	)		406.5
Operating Income (Loss)	$	13.9		$	(7.1	)	$	6.5	$	(1.3	)	$	—		$	12.0
Net Economic (Loss) Earnings	$	(12.3	)	$	(2.5	)	$	3.6	$	(7.4	)	$	—		$	(18.6	)

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	377.4	$	64.1		$	6.3	$	0.2		$	—		$	448.0
Intersegment revenues		—		—			8.3		3.9			(12.2	)		—
Total Operating Revenues		377.4		64.1			14.6		4.1			(12.2	)		448.0
Operating Expenses:
Natural gas		144.5		67.1			—		—			(8.3	)		203.3
Operation and maintenance		95.0		3.2			4.8		3.2			(3.9	)		102.3
Depreciation and amortization		58.1		0.3			1.8		0.2			—			60.4
Taxes, other than income taxes		43.0		0.4			0.6		0.1			—			44.1
Total Operating Expenses		340.6		71.0			7.2		3.5			(12.2	)		410.1
Operating Income (Loss)	$	36.8	$	(6.9	)	$	7.4	$	0.6		$	—		$	37.9
Net Economic Earnings (Loss)	$	4.2	$	0.4		$	4.3	$	(4.8	)	$	—		$	4.1

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	Gas Utility		Gas Marketing		Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	2,174.9	$	157.8	$	22.7	$	0.5		$	—		$	2,355.9
Intersegment revenues		0.4		—		26.4		11.9			(38.7	)		—
Total Operating Revenues		2,175.3		157.8		49.1		12.4			(38.7	)		2,355.9
Operating Expenses:
Natural gas		1,099.5		102.8		—		—			(26.8	)		1,175.5
Operation and maintenance		350.9		16.2		20.1		14.4			(11.9	)		389.7
Depreciation and amortization		181.6		1.0		6.0		0.4			—			189.0
Taxes, other than income taxes		176.2		1.1		1.9		—			—			179.2
Total Operating Expenses		1,808.2		121.1		28.0		14.8			(38.7	)		1,933.4
Operating Income (Loss)	$	367.1	$	36.7	$	21.1	$	(2.4	)	$	—		$	422.5
Net Economic Earnings (Loss)	$	234.5	$	45.0	$	11.6	$	(25.4	)	$	—		$	265.7

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	1,698.3	$	171.4		$	14.1	$	0.5		$	—		$	1,884.3
Intersegment revenues		—		—			27.2		11.6			(38.8	)		—
Total Operating Revenues		1,698.3		171.4			41.3		12.1			(38.8	)		1,884.3
Operating Expenses:
Natural gas		710.7		160.9			—		—			(27.1	)		844.5
Operation and maintenance		306.5		9.1			16.4		11.6			(11.7	)		331.9
Depreciation and amortization		169.2		1.0			5.6		0.4			—			176.2
Taxes, other than income taxes		150.3		0.8			2.1		0.1			—			153.3
Total Operating Expenses		1,336.7		171.8			24.1		12.1			(38.8	)		1,505.9
Operating Income (Loss)	$	361.6	$	(0.4	)	$	17.2	$	—		$	—		$	378.4
Net Economic Earnings (Loss)	$	240.6	$	15.3		$	9.8	$	(18.0	)	$	—		$	247.7

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The following table reconciles the Company’s net economic earnings (loss) to net income (loss).

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6		$	227.9
Adjustments, pre-tax:
Fair value and timing adjustments		3.4			7.3			22.2			20.9
Acquisition activities		0.5			—			0.5			—
Income tax adjustments		(0.9	)		(1.8	)		(5.6	)		(1.1	)
Net Economic (Loss) Earnings	$	(18.6	)	$	4.1		$	265.7		$	247.7

The Company’s total assets by segment were as follows:

	June 30,			September 30,			June 30,
	2023			2022			2022
Total Assets:
Gas Utility	$	8,283.2		$	8,042.8		$	7,854.7
Gas Marketing		316.6			638.7			595.5
Midstream		533.3			446.0			430.9
Other		2,134.1			2,449.2			2,222.0
Eliminations		(1,229.7	)		(1,493.0	)		(1,319.2	)
Total Assets	$	10,037.5		$	10,083.7		$	9,783.9

11. COMMITMENTS AND CONTINGENCIES

Commitments

The Company and the Utilities have entered into contracts with various counterparties, expiring on dates through calendar 2039, for the storage, transportation, and supply of natural gas. Minimum payments required under the contracts in place at June 30, 2023, are estimated at $1,780.5, $1,351.8, and $255.8 for the Company, Spire Missouri, and Spire Alabama, respectively. Additional contracts are generally entered into prior to or during the heating season of November through April. The Utilities recover their costs from customers in accordance with their PGA clauses or GSA riders.

In May 2023, Spire entered into an agreement to acquire MoGas Pipeline, an interstate natural gas pipeline, and Omega Pipeline, a connected gas distribution system, from CorEnergy Infrastructure Trust, Inc., for $175 cash, subject to customary working capital and other closing adjustments. Spire has received a request for additional information ("Second Request") from the Federal Trade Commission (FTC) with regard to this proposed acquisition. The Company intends to cooperate fully with the FTC regarding the Second Request and expects to close around the end of the calendar year subject to receiving FTC approval.

A consolidated subsidiary of Spire is a limited partner in Inter-Atlantic Energy Capital Ventures, L.P., an unconsolidated partnership focusing on sustainability initiatives largely tied to the natural gas utility sector. Spire committed to contribute a total of $10.0 of capital to the partnership as and when requested by the general partner. As of June 30, 2023, the remaining unfunded commitment was $7.2.

Contingencies

The Company and the Utilities account for contingencies, including environmental liabilities, in accordance with accounting standards under the loss contingency guidance of ASC Topic 450, Contingencies, when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated.

In addition to matters noted below, the Company and the Utilities are involved in other litigation, claims, and investigations arising in the normal course of business. Management, after discussion with counsel, believes the final outcome will not have a material effect on the statements of income, balance sheets, and statements of cash flows of the Company, Spire Missouri, or Spire Alabama. However, there is uncertainty in the valuation of pending claims and prediction of litigation results.

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The Company and the Utilities own and operate natural gas distribution, transmission, and storage facilities, the operations of which are subject to various environmental laws, regulations, and interpretations. While environmental issues resulting from such operations arise in the ordinary course of business, such issues have not materially affected the Company’s or Utilities’ financial position and results of operations. As environmental laws, regulations, and their interpretations change, the Company or the Utilities may incur additional environmental liabilities that may result in additional costs, which may be material.

In the natural gas industry, many gas distribution companies have incurred environmental liabilities associated with sites they or their predecessor companies formerly owned or operated where manufactured gas operations took place. The Utilities each have former manufactured gas plant (MGP) operations in their respective service territories, some of which are discussed under the Spire Missouri and Spire Alabama headings below. To the extent costs are incurred associated with environmental remediation activities, the Utilities would request authority from their respective regulators to defer such costs (less any amounts received from insurance proceeds or as contributions from other potentially responsible parties (PRPs)) and collect them through future rates.

To date, costs incurred for all Spire MGP sites for investigation, remediation and monitoring have not been material. However, the amount of costs relative to future remedial actions at these and other sites is unknown and may be material. The actual future costs that Spire Missouri and Spire Alabama may incur could be materially higher or lower depending upon several factors, including whether remediation will be required, final selection and regulatory approval of any remedial actions, changing technologies and government regulations, the ultimate ability of other PRPs to pay, and any insurance recoveries.

In 2020, Spire retained an outside consultant to conduct probabilistic cost modeling of its former MGP sites in Missouri and Alabama. The purpose of this analysis was to develop an estimated range of probabilistic future liability for each of their MGP sites. That analysis, completed in March 2021, provided a range of demonstrated possible future expenditures to investigate, monitor and remediate the former MGP sites. Spire Missouri and Spire Alabama have recorded their best estimates of the probable expenditures that relate to these matters. The amount remains immaterial, and Spire Missouri, Spire Alabama and the Company do not expect potential liabilities that may arise from remediating these sites to have a material impact on their future financial condition or results of operations.

Spire Missouri

Spire Missouri has identified three former MGP sites in the city of St. Louis, Missouri (the “City”) where costs have been incurred and claims have been asserted. Spire Missouri has enrolled two of the sites in the Missouri Department of Natural Resources (MoDNR) Brownfields/Voluntary Cleanup Program (BVCP). The third site is the result of an assertion by the United States Environmental Protection Agency (EPA).

In conjunction with redevelopment of the Carondelet Coke site, Spire Missouri and another former owner of the site entered into an agreement (the “Remediation Agreement”) with the City development agencies, the developer, and an environmental consultant that obligates one of the City agencies and the environmental consultant to remediate the site and obtain a No Further Action (NFA) letter from the MoDNR. The Remediation Agreement also provides for a release of Spire Missouri and the other former site owner from certain liabilities related to the past and current environmental condition of the site and requires the developer and the environmental consultant to maintain certain insurance coverage, including remediation cost containment, premises pollution liability, and professional liability. The operative provisions of the Remediation Agreement were triggered on December 20, 2010, on which date Spire Missouri and the other former site owner, as full consideration under the Remediation Agreement, paid a small percentage of the cost of remediation of the site. The property was divided into seven parcels, and MoDNR NFA letters have been received for six of the parcels. Remediation is ongoing on the last parcel.

In a letter dated June 29, 2011, the Attorney General for the State of Missouri informed Spire Missouri that the MoDNR had completed an investigation of the second site, Station A. The Attorney General requested that Spire Missouri participate in the follow up investigations of the site. In a letter dated January 10, 2012, Spire Missouri stated that it would participate in future environmental response activities at the site in conjunction with other PRPs. Accordingly, Spire Missouri entered into a cost sharing agreement for remedial investigation with other PRPs. MoDNR never approved the agreement, so no remedial investigation took place.

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Additionally, in correspondence dated November 30, 2016, Region 7 of the EPA has asserted that Spire Missouri is liable under Section 107(a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) for alleged coal gas waste contamination at a third site, Station B. Spire Missouri and the site owner notified the EPA that information and data provided by the EPA to date does not rise to the level of documenting a threat to the public health or environment. As such, in March 2017 Spire Missouri requested more information from the EPA. Spire Missouri never received a response from the EPA.

Spire Missouri has notified its insurers that it seeks reimbursement for costs incurred in the past and future potential liabilities associated with these MGP sites. While some of the insurers have denied coverage and reserved their rights, Spire Missouri retains the right to seek potential reimbursements from them.

On March 10, 2015, Spire Missouri received a Section 104(e) information request under CERCLA from EPA Region 7 regarding the former Thompson Chemical/Superior Solvents site in the City. In turn, Spire Missouri issued a Freedom of Information Act (FOIA) request to the EPA on April 3, 2015, to identify the basis of the inquiry. The FOIA response from the EPA was received on July 15, 2015, and a response was provided to the EPA on August 15, 2015. Spire Missouri has received no further inquiry from the EPA regarding this matter.

In its western service area, Spire Missouri has six owned MGP sites enrolled in the BVCP, including Joplin MGP #1, St. Joseph MGP #1, Kansas City Coal Gas Station B, Kansas City Station A Railroad area, Kansas City Coal Gas Station A, and Independence MGP #2. Source removal has been conducted at all the owned sites since 2003 with the exception of Joplin. On September 15, 2016, a request was made with the MoDNR for a restrictive covenant use limitation with respect to Joplin. Remediation efforts at the six sites are at various stages of completion, ranging from groundwater monitoring and sampling following source removal activities to the aforementioned request for the Joplin site. As part of its participation in the BVCP, Spire Missouri communicates regularly with the MoDNR with respect to its remediation efforts and monitoring activities at these sites. On May 11, 2015, MoDNR approved the next phase of investigation at the Kansas City Station A Railroad area.

Spire Alabama

Spire Alabama is in the chain of title of nine former MGP sites, four of which it still owns, and five former manufactured gas distribution sites, one of which it still owns. All are located in the state of Alabama.

In 2011, a removal action was completed and an NFA letter was received at the Huntsville MGP site pursuant to an Administrative Settlement Agreement and Order on Consent among the EPA, Spire Alabama and the current site owner.

In 2012, Spire Alabama responded to an EPA Request for Information Pursuant to Section 104 of CERCLA relating to the 35th Avenue Superfund Site located in North Birmingham, Jefferson County, Alabama. Spire Alabama was identified as a PRP under CERCLA for the cleanup of the site or costs the EPA incurs in cleaning up the site. At this point, Spire Alabama has not been provided information that would allow it to determine the extent, if any, of its potential liability with respect to the 35th Avenue Superfund Site and vigorously denies its inclusion as a PRP.

Assessments were performed by the EPA of the former MGP sites in Gadsden and Anniston, and NFA letters were received after each assessment.

Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is aware of the following contingent matters.

Spire Marketing, along with many natural gas industry participants, faced the unprecedented effects of Winter Storm Uri in February 2021. Numerous natural gas producers and midstream operators were unable to deliver natural gas to market as they experienced wellhead freeze-offs, power outages and equipment failure due to the extreme weather. These events resulted in supply curtailments, and related notices of force majeure to excuse performance, from and to certain counterparties. Further, these events have made Spire Marketing subject to various commercial disputes (including regarding force majeure). As such, Spire Marketing has recorded an estimate of potential liabilities for damages based on communications with counterparties and the facts and circumstances surrounding each transaction. These estimates are adjusted as new facts emerge or settlement agreements are reached, and it is possible that final settlement amounts may materially differ from the current estimate.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

(Dollars in millions, except per share amounts)

This section analyzes the financial condition and results of operations of Spire Inc. (the “Company”), Spire Missouri Inc., and Spire Alabama Inc. Spire Missouri, Spire Alabama and Spire EnergySouth are wholly owned subsidiaries of the Company. Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth (Spire Gulf and Spire Mississippi) are collectively referred to as the “Utilities.” This section includes management’s view of factors that affect the respective businesses of the Company, Spire Missouri and Spire Alabama, explanations of financial results including changes in earnings and costs from the prior periods, and the effects of such factors on the Company’s, Spire Missouri’s and Spire Alabama’s overall financial condition and liquidity.

Certain matters discussed in this report, excluding historical information, include forward-looking statements. Certain words, such as “may,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “seek,” “target,” and similar words and expressions identify forward-looking statements that involve uncertainties and risks. Future developments may not be in accordance with our current expectations or beliefs and the effect of future developments may not be those anticipated. Among the factors that may cause results or outcomes to differ materially from those contemplated in any forward-looking statement are:

•  Weather conditions and catastrophic events, particularly severe weather in U.S. natural gas producing areas;

•  Volatility in gas prices, particularly sudden and sustained changes in natural gas prices, including the related impact on margin deposits associated with the use of natural gas derivative instruments, and the impact on our competitive position in relation to suppliers of alternative heating sources, such as electricity;

•  Changes in gas supply and pipeline availability, including as a result of decisions by natural gas producers to reduce production or shut in producing natural gas wells and expiration or termination of existing supply and transportation arrangements that are not replaced with contracts with similar terms and pricing, as well as other changes that impact supply for and access to the markets in which our subsidiaries transact business;

•  Acquisitions may not achieve their intended results;

•  Legislative, regulatory and judicial mandates and decisions, some of which may be retroactive, including those affecting:

▪  allowed rates of return and recovery of prudent costs,

▪  incentive regulation,

▪  industry structure,

▪  purchased gas adjustment provisions,

▪  rate design structure and implementation,

▪  capital structures established for rate-setting purposes,

▪  regulatory assets,

▪  non-regulated and affiliate transactions,

▪  franchise renewals,

▪  authorization to operate facilities,

▪  environmental or safety matters, including the potential impact of legislative and regulatory actions related to climate change and pipeline safety and security,

▪  taxes,

▪  pension and other postretirement benefit liabilities and funding obligations, or

▪  accounting standards;

•  The results of litigation;

•  The availability of and access to, in general, funds to meet our debt obligations prior to or when they become due and to fund our operations and necessary capital expenditures, either through (i) cash on hand, (ii) operating cash flow, or (iii) access to the capital markets;

•  Retention of, ability to attract, ability to collect from, and conservation efforts of, customers;

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•  Our ability to comply with all covenants in our indentures and credit facilities, any violations of which, if not cured in a timely manner, could trigger a default of our obligation;

•  Energy commodity market conditions;

•  Discovery of material weakness in internal controls;

•  The disruption, failure or malfunction of our operational and information technology systems, including due to cyberattacks; and

•  Employee workforce issues, including but not limited to labor disputes, the inability to attract and retain key talent, and future wage and employee benefit costs, including costs resulting from changes in discount rates and returns on benefit plan assets.

Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the Company’s Condensed Consolidated Financial Statements, Spire Missouri’s and Spire Alabama’s Condensed Financial Statements, and the notes thereto.

OVERVIEW

Certain information is presented by reportable segment, as described below. Effective during the first quarter of fiscal 2023, the Company changed its reportable segments to reflect changes in the way its chief operating decision maker evaluates the performance of its operations, develops strategy and allocates capital resources. Specifically, Midstream, which was formerly included in Other, is now reported separately. The Company's historical segment disclosures have been recast to be consistent with the current presentation.

The Company has three reportable segments: Gas Utility, Gas Marketing, and Midstream. Spire’s earnings are derived primarily from its Gas Utility segment, which reflects the regulated activities of the Utilities. Due to the seasonal nature of the Utilities’ business and the volumetric Spire Missouri rate design, earnings of Spire and each of the Utilities are typically concentrated during the heating season of November through April each fiscal year.

Gas Utility – Spire Missouri

Spire Missouri is Missouri’s largest natural gas distribution utility and is regulated by the MoPSC. Spire Missouri serves St. Louis, Kansas City, and other areas throughout the state. Spire Missouri purchases natural gas in the wholesale market from producers and marketers and ships the gas through interstate pipelines into its own distribution facilities for sale to residential, commercial and industrial customers. Spire Missouri also transports gas through its distribution system for certain larger customers who buy their own gas on the wholesale market. Spire Missouri delivers natural gas to customers at rates and in accordance with tariffs authorized by the MoPSC. The earnings of Spire Missouri are primarily generated by the sale of heating energy.

Gas Utility – Spire Alabama

Spire Alabama is the largest natural gas distribution utility in the state of Alabama and is regulated by the APSC. Spire Alabama’s service territory is located in central and northern Alabama. Among the cities served by Spire Alabama are Birmingham, the center of the largest metropolitan area in the state, and Montgomery, the state capital. Spire Alabama purchases natural gas through interstate and intrastate suppliers and distributes the purchased gas through its distribution facilities for sale to residential, commercial, and industrial customers, and other end users of natural gas. Spire Alabama also transports gas through its distribution system for certain large commercial and industrial customers for a transportation fee. Effective December 1, 2020, for most of these transportation service customers, Spire Alabama also purchases gas on the wholesale market for sale to the customer upon delivery to the Spire Alabama distribution system. All Spire Alabama services are provided to customers at rates and in accordance with tariffs authorized by the APSC.

Gas Utility – Spire EnergySouth

Spire Gulf and Spire Mississippi are utilities engaged in the purchase, retail distribution and sale of natural gas to approximately 100,000 customers in southern Alabama and south-central Mississippi. Spire Gulf is regulated by the APSC, and Spire Mississippi is regulated by the MSPSC.

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Gas Marketing

Spire Marketing is engaged in the marketing of natural gas and related activities on a non-regulated basis and is reported in the Gas Marketing segment. Spire Marketing markets natural gas to customers across the U.S. (and into Canada), including customers inside and outside of the Utilities’ service areas. It holds firm transportation and storage contracts in order to effectively manage its transactions with counterparties, which primarily include producers, municipalities, electric and gas utility companies, and large commercial and industrial customers.

Midstream

Spire's midstream operations consist of Spire Storage West LLC, Spire Storage Salt Plains LLC (jointly, “Spire Storage”) and Spire STL Pipeline LLC (“Spire STL Pipeline”). Spire STL Pipeline is a wholly owned subsidiary of Spire which owns and operates a FERC-regulated 65-mile pipeline connecting the Rockies Express Pipeline in Scott County, Illinois, to delivery points in St. Louis County, Missouri, including Spire Missouri’s storage facility. Spire STL Pipeline’s operating revenue is derived primarily from Spire Missouri as its foundation shipper. Spire Storage is engaged in the storage of natural gas in both the western and midcontinent regions of the United States. Spire Storage West, located in Wyoming, consists of two storage fields operating under one FERC market-based rate tariff, while Spire Storage Salt Plains, acquired on April 1, 2023 and located in Oklahoma, operates under intrastate jurisdiction with authorizations from FERC under Section 311 of the Natural Gas Policy Act to provide certain interstate storage, transportation, and hub services.

Other

Other components of the Company’s consolidated information include Spire’s subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

NON-GAAP MEASURES

Net income, earnings per share and operating income reported by Spire, Spire Missouri and Spire Alabama are determined in accordance with accounting principles generally accepted in the United States of America (GAAP). Spire, Spire Missouri and Spire Alabama also provide the non-GAAP financial measures of net economic earnings, net economic earnings per share and contribution margin. Management and the Board of Directors use non-GAAP financial measures, in addition to GAAP financial measures, to understand and compare operating results across accounting periods, for financial and operational decision making, for planning and forecasting, to determine incentive compensation and to evaluate financial performance. These non-GAAP operating metrics should not be considered as alternatives to, or more meaningful than, the related GAAP measures. Reconciliations of non-GAAP financial measures to the most directly comparable GAAP measures are provided on the following pages.

Net Economic Earnings and Net Economic Earnings Per Share

Net economic earnings and net economic earnings per share are non-GAAP measures that exclude from net income, as applicable, the impacts of fair value accounting and timing adjustments associated with energy-related transactions, the impacts of acquisition, divestiture and restructuring activities, the largely non-cash impacts of impairments, and other non-recurring or unusual items such as certain regulatory, legislative or GAAP standard-setting actions. In addition, net economic earnings per share would exclude the impact, in the fiscal year of issuance, of any shares issued to finance such activities that have yet to be included in net economic earnings.

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The fair value and timing adjustments are made in instances where the accounting treatment differs from what management considers the economic substance of the underlying transaction, including the following:

•  Net unrealized gains and losses on energy-related derivatives that are required by GAAP fair value accounting associated with current changes in the fair value of financial and physical transactions prior to their completion and settlement. These unrealized gains and losses result primarily from two sources:

1) changes in the fair values of physical and/or financial derivatives prior to the period of settlement; and

2) ineffective portions of accounting hedges, required to be recorded in earnings prior to settlement, due to differences in commodity price changes between the locations of the forecasted physical purchase or sale transactions and the locations of the underlying hedge instruments;

•  Lower of cost or market adjustments to the carrying value of commodity inventories resulting when the net realizable value of the commodity falls below its original cost, to the extent that those commodities are economically hedged; and

•  Realized gains and losses resulting from the settlement of economic hedges prior to the sale of the physical commodity.

These adjustments eliminate the impact of timing differences and the impact of current changes in the fair value of financial and physical transactions prior to their completion and settlement. Unrealized gains or losses are recorded in each period until being replaced with the actual gains or losses realized when the associated physical transactions occur. Management believes that excluding the earnings volatility caused by recognizing changes in fair value prior to settlement and other timing differences associated with related purchase and sale transactions provides a useful representation of the economic effects of only the actual settled transactions and their effects on results of operations. While management uses these non-GAAP measures to evaluate all of its businesses, the net effect of these fair value and timing adjustments on the Utilities’ earnings is minimal because gains or losses on their natural gas derivative instruments are deferred pursuant to state regulation.

Contribution Margin

In addition to operating revenues and operating expenses, management also uses the non-GAAP measure of contribution margin when evaluating results of operations. Contribution margin is defined as operating revenues less natural gas costs and gross receipts tax expense. The Utilities pass to their customers (subject to prudence review by, as applicable, the MoPSC, APSC or MSPSC) increases and decreases in the wholesale cost of natural gas in accordance with their PGA clauses or GSA riders. The volatility of the wholesale natural gas market results in fluctuations from period to period in the recorded levels of, among other items, revenues and natural gas cost expense. Nevertheless, increases and decreases in the cost of gas associated with system gas sales volumes and gross receipts tax expense (which are calculated as a percentage of revenues), with the same amount (excluding immaterial timing differences) included in revenues, have no direct effect on operating income. Therefore, management believes that contribution margin is a useful supplemental measure, along with the remaining operating expenses, for assessing the Company’s and the Utilities’ performance.

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EARNINGS – THREE MONTHS ENDED June 30, 2023

This section contains discussion and analysis of the results for the three months ended June 30, 2023 compared to the results for the three months ended June 30, 2022, in total and by registrant and segment. 

Spire

Net Income and Net Economic Earnings

The following tables reconcile the Company’s net economic earnings to the most comparable GAAP number, net income.

	Gas Utility			Gas Marketing			Midstream		Other			Total			Per Diluted Common Share**
Three Months Ended June 30, 2023
Net (Loss) Income [GAAP]	$	(12.4	)	$	(4.9	)	$	3.1	$	(7.4	)	$	(21.6	)	$	(0.48	)
Adjustments, pre-tax:
Fair value and timing adjustments		0.2			3.2			—		—			3.4			0.06
Acquisition activities		—			—			0.5		—			0.5			0.01
Income tax adjustments*		(0.1	)		(0.8	)		—		—			(0.9	)		(0.01	)
Net Economic (Loss) Earnings [Non-GAAP]	$	(12.3	)	$	(2.5	)	$	3.6	$	(7.4	)	$	(18.6	)	$	(0.42	)
Three Months Ended June 30, 2022
Net Income (Loss) [GAAP]	$	4.2		$	(5.1	)	$	4.3	$	(4.8	)	$	(1.4	)	$	(0.10	)
Adjustments, pre-tax:
Fair value and timing adjustments		—			7.3			—		—			7.3			0.14
Income tax adjustments*		—			(1.8	)		—		—			(1.8	)		(0.03	)
Net Economic Earnings (Loss) [Non-GAAP]	$	4.2		$	0.4		$	4.3	$	(4.8	)	$	4.1		$	0.01

*      Income tax adjustments include amounts calculated by applying federal, state, and local income tax rates applicable to ordinary income to the amounts of the pre-tax reconciling items.

**    Net economic earnings per share is calculated by replacing consolidated net income with consolidated net economic earnings in the GAAP diluted earnings per share calculation, which includes reductions for cumulative preferred dividends and participating shares.

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Reconciliations of contribution margin to the most directly comparable GAAP measure are shown below.

	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2023
Operating Income (Loss) [GAAP]	$	13.9		$	(7.1	)	$	6.5	$	(1.3	)	$	—		$	12.0
Operation and maintenance expenses		111.7			4.2			8.1		5.5			(4.0	)		125.5
Depreciation and amortization		61.7			0.3			2.1		0.2			—			64.3
Taxes, other than income taxes		45.9			0.4			0.7		(0.1	)		—			46.9
Less: Gross receipts tax expense		(26.0	)		—			—		—			—			(26.0	)
Contribution Margin [Non-GAAP]		207.2			(2.2	)		17.4		4.3			(4.0	)		222.7
Natural gas costs		154.6			25.3			—		—			(10.1	)		169.8
Gross receipts tax expense		26.0			—			—		—			—			26.0
Operating Revenues	$	387.8		$	23.1		$	17.4	$	4.3		$	(14.1	)	$	418.5
Three Months Ended June 30, 2022
Operating Income (Loss) [GAAP]	$	36.8		$	(6.9	)	$	7.4	$	0.6		$	—		$	37.9
Operation and maintenance expenses		95.0			3.2			4.8		3.2			(3.9	)		102.3
Depreciation and amortization		58.1			0.3			1.8		0.2			—			60.4
Taxes, other than income taxes		43.0			0.4			0.6		0.1			—			44.1
Less: Gross receipts tax expense		(23.2	)		(0.1	)		—		—			—			(23.3	)
Contribution Margin [Non-GAAP]		209.7			(3.1	)		14.6		4.1			(3.9	)		221.4
Natural gas costs		144.5			67.1			—		—			(8.3	)		203.3
Gross receipts tax expense		23.2			0.1			—		—			—			23.3
Operating Revenues	$	377.4		$	64.1		$	14.6	$	4.1		$	(12.2	)	$	448.0

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Select variances for the quarter ended June 30, 2023 compared to the quarter ended June 30, 2022 are summarized in the following table and discussed below.

	Gas			Gas						Other, Net of
Variances: Fiscal 2023 Versus Fiscal 2022	Utility			Marketing			Midstream			Eliminations			Consolidated
Net Income	$	(16.6	)	$	0.2		$	(1.2	)	$	(2.6	)	$	(20.2	)
Net Economic Earnings [Non-GAAP]		(16.5	)		(2.9	)		(0.7	)		(2.6	)		(22.7	)
Operating Revenues		10.4			(41.0	)		2.8			(1.7	)		(29.5	)
Contribution Margin [Non-GAAP]		(2.5	)		0.9			2.8			0.1			1.3
Operation and Maintenance Expenses		16.7			1.0			3.3			2.2			23.2
Interest Expense														17.4
Other Income														18.4
Income Tax														(4.7	)

The increase in interest expense reflects the significant increase in short-term interest rates and higher debt levels versus the prior year. Current year weighted-average short-term debt decreased, driven by timing of gas cost recoveries, but weighted-average short-term interest rates were 5.320% in the current-year quarter, versus 1.18% in the prior-year quarter.

After removing the impact of the Non-Service Cost Postretirement Benefit Transfer (“NSC Transfer”) of $8.6, other income increased $9.8. This increase was primarily the result of favorable mark-to-market valuations on unqualified retirement trusts and inventory carrying cost credits at Spire Missouri.

The change in income taxes reflects unfavorable income mix. Removing this impact, the change in income taxes is in line with the change in pre-tax book income.

Gas Utility

For the quarter ended June 30, 2023, Gas Utility net income was $16.6 lower than the prior-year period, reflecting lower financial performance across our utilities. Net economic earnings in the current year was $16.5 lower than the prior year, which tracks the net income trend. These results are described in further detail below.

The increase in Gas Utility operating revenues was attributable to the following factors:

Spire Missouri and Spire Alabama – Higher PGA/GSA rates (gas cost recovery)	$	24.8
Spire Missouri – 2022 rate order		5.1
Spire Missouri and Spire Alabama – Volumetric usage (including weather mitigation impact)		(10.6	)
Spire Alabama – RSE adjustments, net		(5.4	)
Spire EnergySouth		(4.1	)
All other factors		0.6
Total Variation	$	10.4

The primary driver of revenue growth was $24.8 in higher gas cost recoveries in the current-year period reflecting the higher average gas costs being passed through to customers, and a $5.1 increase from Spire Missouri resulting from the impact of implementing the 2022 rate order. These favorable impacts were partly offset by lower volumetric usage across Spire Missouri and Spire Alabama (net of weather mitigation) totaling $10.6, $5.4 of unfavorable RSE adjustments at Spire Alabama, and a $4.1 decrease at Spire EnergySouth.

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The year-over-year decrease in Gas Utility contribution margin was attributable to the following factors:

Spire Alabama – RSE adjustments, net	$	(5.2	)
Spire EnergySouth		(1.7	)
Spire Missouri – 2022 rate order		5.1
All other factors		(0.7	)
Total Variation	$	(2.5	)

Contribution margin decreased versus the prior-year quarter, as the $5.1 increase attributable to the implementation of the 2022 Missouri rate case order was more than offset by $5.2 of unfavorable RSE adjustments at Spire Alabama (as described further in the Spire Alabama section below) and a $1.7 decline at Spire EnergySouth.

O&M expenses for the three months ended June 30, 2023, were $16.7 higher than the prior year. Run-rate expenses increased $8.4 after removing the $8.3 impact of the NSC Transfer. The Gas Utility segment O&M increase reflects approximately $6.0 due to the change in treatment of Spire Missouri general overheads that were being deferred in the prior-year period, higher non-employee operations expense of $2.1 and higher customer experience expense of $1.5. These unfavorable impacts were only partly offset by lower employee-related expenses and insurance expense.

Taxes, other than income taxes, increased $2.9, primarily due to higher gross receipt taxes. Depreciation and amortization expenses for the quarter ended June 30, 2023 were $3.6 higher than the same period in the prior year primarily driven by continued infrastructure capital expenditures across all the Utilities.

Gas Marketing

The quarter-over-quarter decline in net economic earnings is primarily the result of market conditions and higher storage and demand fees in margin, combined with slightly higher O&M costs. Net income reflected these same variance drivers, partly mitigated by favorable quarter-over-quarter mark-to-market activity on open derivative contracts.

Midstream

Net income and net economic earnings for the Company’s Midstream segment for the quarter ended June 30, 2023 versus the prior-year quarter decreased $1.2 and $0.7, respectively. Net income growth at Spire Storage West and STL Pipeline were offset by transaction expenses relating to the Spire Storage Salt Plains acquisition, which were only partly offset by its operating results since acquisition. 

Revenues in the current quarter increased $2.8 versus the prior-year quarter, attributable primarily to the acquisition. Operating expenses increased by $3.3 quarter-over-quarter, due primarily to transaction and operating expenses associated with Spire Storage Salt Plains.

Other

The Company’s other activities generated a $7.4 loss in the three months ended June 30, 2023, $2.6 higher than the prior-year quarter. The larger current-year loss was driven by higher interest expense in the current year, reflecting both higher borrowings and interest rates, combined with higher corporate costs.

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Spire Missouri

	Three Months Ended June 30,
	2023			2022
Operating Income [GAAP]	$	2.8		$	12.9
Operation and maintenance expenses		71.1			59.5
Depreciation and amortization		40.0			37.3
Taxes, other than income taxes		34.4			32.3
Less: Gross receipts tax expense		(18.9	)		(16.7	)
Contribution Margin [Non-GAAP]		129.4			125.3
Natural gas costs		105.5			94.7
Gross receipts tax expense		18.9			16.7
Operating Revenues	$	253.8		$	236.7
Net Loss	$	(13.8	)	$	(8.4	)

Revenues for the quarter ended June 30, 2023 were $17.1 higher than the comparable prior-year period. A key driver was an increase in gas recovery costs totaling $9.2. Further, $5.1 of the increase was attributable to fiscal 2023 results including the impact of the 2022 rate order. Higher gross receipts taxes, combined with higher off-system sales, contributed a $3.9 increase. These revenue growth drivers were only partially offset by the $1.0 reduction related to lower volume.

Contribution margin for the three months ended June 30, 2023 increased $4.1 from the same period in the prior year. The previously mentioned timing of the 2022 rate case implementation generated $5.1 incremental contribution that was only partly offset by the $1.0 impact of lower volumes. 

Degree days in Spire Missouri’s service areas during the three months ended June 30, 2023, were 22.5% warmer than normal, and 24.8% warmer than the same period last year. Spire Missouri’s total system volume sold and transported were 219.4 million centum (Latin for “hundred”) cubic feet (CCF) for the quarter, compared with 243.2 million CCF for the same period in the prior year. Total off-system volume sold and transported were 10.3 million CCF for the current-year quarter, compared with 1.1 million CCF a year ago.

Reported O&M expenses for the current-year quarter increased $11.6 versus the prior year. Run-rate expenses increased $4.7 after removing the $6.9 impact of the NSC Transfer. Lower bad debts and insurance expenses were more than offset by $6.0 of current-year general overheads that were previously deferred. 

Depreciation and amortization expenses increased $2.7 versus the prior-year quarter due to ongoing capital investments. Taxes, other than income taxes, increased $2.1, driven by higher pass-through gross receipts taxes.

Other income improved by $7.5 after removing the $6.9 impact due to the NSC Transfer. This variance is primarily attributable to increased inventory carrying cost credits and, to a lesser extent, mark-to-market valuations on unqualified retirement trusts. Interest expense increased $10.2, reflecting higher short-term interest rates in the current year and the $400 in long-term debt that was issued early in the current-year second quarter.

Resulting net income for the quarter ended June 30, 2023 decreased $5.4 versus the prior-year quarter.

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Spire Alabama

	Three Months Ended June 30,
	2023			2022
Operating Income [GAAP]	$	10.2		$	20.0
Operation and maintenance expenses		33.4			29.2
Depreciation and amortization		17.5			16.9
Taxes, other than income taxes		9.3			8.6
Less: Gross receipts tax expense		(6.1	)		(5.5	)
Contribution Margin [Non-GAAP]		64.3			69.2
Natural gas costs		42.7			41.0
Gross receipts tax expense		6.1			5.5
Operating Revenues	$	113.1		$	115.7
Net Income	$	1.3		$	10.5

Operating revenues for the three months ended June 30, 2023 decreased $2.6 from the same period in the prior year. The change in operating revenue was principally due to unfavorable weather/usage impacts of $9.6, and a decrease in off-system sales totaling $3.6. Net unfavorable RSE adjustments of $5.4 were the result of the timing of prior-year Cost Control Measure (CCM) benefit recognition more than offsetting the rate increase resulting from the current year rate order. For the quarter, these unfavorable impacts were only partly offset by the $15.6 increase attributable to gas cost recovery.

Contribution margin was $4.9 lower versus the prior-year quarter primarily driven by $5.2 unfavorable net rate adjustments under the RSE mechanism driven by the timing of the CCM benefit recognition resulting in an unfavorable variance of $8.2 that is expected to reverse in the fourth quarter of fiscal 2023, partially offset by the $3.0 rate increase of the current year rate order. 

As measured in degree days, temperatures in Spire Alabama’s service area during the three months ended June 30, 2023, were 12.2% colder than normal and 9.4% warmer than a year ago. Despite warmer weather in the current-year quarter, Spire Alabama’s total system volume sold and transported were 237.0 million CCF for the three months ended June 30, 2023, compared with 221.3 million CCF for the same period in the prior year. Total off-system volume sold and transported were 29.1 million CCF for the quarter, compared with 26.6 million CCF off-system volume sold and transported in last year's third quarter.

O&M expenses for the three months ended June 30, 2023 increased $4.2 versus the prior-year quarter, $3.1 after removing the NSC Transfer variance versus the prior-year quarter. The increase was primarily due to higher non-employee operating expenses, combined with higher bad debts expense.

Depreciation and amortization expenses were up $0.6, the result of continued investment in infrastructure upgrades. Interest expense for the current-year quarter increased $3.5 versus the prior-year quarter, the result of significantly higher short-term interest rates and to a lesser extent, higher levels of long-term debt.

For the quarter ended June 30, 2023, resulting net income decreased $9.2 versus the prior-year quarter.

EARNINGS – NINE MONTHS ENDED June 30, 2023

This section contains discussion and analysis of the results for the nine months ended June 30, 2023 compared to the results for the nine months ended June 30, 2022, in total and by registrant and segment. 

Spire

Net Income and Net Economic Earnings

The Company reported net income growth of $20.7 and net economic earnings growth of $18.0, as increases in the Marketing and Midstream segments more than offset slight declines in the Utility segment.

The following tables reconcile the Company’s net economic earnings to the most comparable GAAP number, net income.

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	Gas Utility			Gas Marketing			Midstream		Other			Total			Per Diluted Common Share**
Nine Months Ended June 30, 2023
Net Income (Loss) [GAAP]	$	234.0		$	28.9		$	11.1	$	(25.4	)	$	248.6		$	4.51
Adjustments, pre-tax:
Fair value and timing adjustments		0.7			21.5			—		—			22.2			0.42
Acquisition activities		—			—			0.5		—			0.5			0.01
Income tax effect of adjustments*		(0.2	)		(5.4	)		—		—			(5.6	)		(0.11	)
Net Economic Earnings (Loss) [Non-GAAP]	$	234.5		$	45.0		$	11.6	$	(25.4	)	$	265.7		$	4.83
Nine Months Ended June 30, 2022
Net Income (Loss) [GAAP]	$	236.5		$	(0.4	)	$	9.8	$	(18.0	)	$	227.9		$	4.16
Adjustments, pre-tax:
Fair value and timing adjustments		—			20.9			—		—			20.9			0.40
Income tax effect of adjustments*		4.1			(5.2	)		—		—			(1.1	)		(0.02	)
Net Economic Earnings (Loss) [Non-GAAP]	$	240.6		$	15.3		$	9.8	$	(18.0	)	$	247.7		$	4.54

*      Income tax adjustments include amounts calculated by applying federal, state, and local income tax rates applicable to ordinary income to the amounts of the pre-tax reconciling items, and for fiscal 2022, include a $4.1 Spire Missouri regulatory adjustment.

**    Net economic earnings per share is calculated by replacing consolidated net income with consolidated net economic earnings in the GAAP diluted earnings per share calculation, which includes reductions for cumulative preferred dividends and participating shares.

Reconciliations of contribution margin to the most directly comparable GAAP measure are shown below.

	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2023
Operating Income (Loss) [GAAP]	$	367.1		$	36.7		$	21.1	$	(2.4	)	$	—		$	422.5
Operation and maintenance expenses		350.9			16.2			20.1		14.4			(11.9	)		389.7
Depreciation and amortization		181.6			1.0			6.0		0.4			—			189.0
Taxes, other than income taxes		176.2			1.1			1.9		—			—			179.2
Less: Gross receipts tax expense		(116.4	)		(0.2	)		—		—			—			(116.6	)
Contribution Margin [Non-GAAP]		959.4			54.8			49.1		12.4			(11.9	)		1,063.8
Natural gas costs		1,099.5			102.8			—		—			(26.8	)		1,175.5
Gross receipts tax expense		116.4			0.2			—		—			—			116.6
Operating Revenues	$	2,175.3		$	157.8		$	49.1	$	12.4		$	(38.7	)	$	2,355.9
Nine Months Ended June 30, 2022
Operating Income (Loss) [GAAP]	$	361.6		$	(0.4	)	$	17.2	$	—		$	—		$	378.4
Operation and maintenance expenses		306.5			9.1			16.4		11.6			(11.7	)		331.9
Depreciation and amortization		169.2			1.0			5.6		0.4			—			176.2
Taxes, other than income taxes		150.3			0.8			2.1		0.1			—			153.3
Less: Gross receipts tax expense		(96.8	)		(0.3	)		—		—			—			(97.1	)
Contribution Margin [Non-GAAP]		890.8			10.2			41.3		12.1			(11.7	)		942.7
Natural gas costs		710.7			160.9			—		—			(27.1	)		844.5
Gross receipts tax expense		96.8			0.3			—		—			—			97.1
Operating Revenues	$	1,698.3		$	171.4		$	41.3	$	12.1		$	(38.8	)	$	1,884.3

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Select variances for the  nine months ended June 30, 2023 compared to the  nine months ended June 30, 2022 are summarized in the following table and discussed below.

	Gas			Gas					Other, Net of
Variances: Fiscal 2023 Versus Fiscal 2022	Utility			Marketing			Midstream		Eliminations			Consolidated
Net Income	$	(2.5	)	$	29.3		$	1.3	$	(7.4	)	$	20.7
Net Economic Earnings [Non-GAAP]		(6.1	)		29.7			1.8		(7.4	)		18.0
Operating Revenues		477.0			(13.6	)		7.8		0.4			471.6
Contribution Margin [Non-GAAP]		68.6			44.6			7.8		0.1			121.1
Operation and Maintenance Expenses		44.4			7.1			3.7		2.6			57.8
Interest Expense													52.1
Other Income													27.4
Income Tax													(1.3	)

The increase in interest expense reflects the significant increase in short-term interest rates and higher long-term debt levels versus the prior year, combined with higher average levels of short-term borrowings in the current year. Weighted-average short-term interest rates were 4.83% in the current year, versus 0.6% in the prior year.

The change in other income was $18.1 after removing the impact of the NSC Transfer of $9.3. This increase was primarily the result of increased inventory carrying-cost credits, along with favorable mark-to-market valuations on unqualified retirement trusts at Spire Missouri.

After removing the $4.1 Spire Missouri regulatory charge that was recorded in the prior year, the change in income taxes is consistent with the change in pre-tax book income.

Gas Utility

For the nine months ended June 30, 2023, Gas Utility net income was $2.5 lower than the prior-year period, as the $10.5 and $1.6 growth at Spire Missouri and Spire EnergySouth, respectively, was more than offset by the $14.6 decrease at Spire Alabama. Net economic earnings in the current year was $6.1 lower than the prior year, which tracks the net income trend after removing the Spire Missouri $4.1 GAAP regulatory adjustment in the prior-year period. These results are described in further detail below.

The increase in Gas Utility operating revenues was attributable to the following factors:

Spire Missouri and Spire Alabama – Higher PGA/GSA rates (gas cost recovery)	$	419.1
Spire Missouri – 2021 and 2022 rate case outcomes		59.7
Spire Missouri and Spire Alabama – Higher gross receipts taxes		19.0
Spire EnergySouth		9.4
Spire Missouri – Volumetric usage (including weather mitigation impact)		4.0
Spire Alabama – RSE adjustments, net		4.0
Spire Alabama – Volumetric usage (including weather mitigation impact)		(34.9	)
All other factors		(3.3	)
Total Variation	$	477.0

The primary driver of revenue growth in the current year-to-date results was $419.1 in higher gas cost recoveries at the utilities of Spire Missouri and Spire Alabama in the current year, reflecting higher average gas costs being passed through to customers. The current year also benefited from a $59.7 increase at Spire Missouri resulting from the current-year impacts of the 2022 and 2021 rate orders and a $4.0 increase attributable to volume. The current year-to-date results also include higher gross receipts taxes of $19.0 at Spire Missouri and Spire Alabama, growth of $9.4 at Spire EnergySouth, and RSE adjustment driven growth of $4.0 at Spire Alabama, which includes the third quarter unfavorable CCM timing impact mentioned previously in the quarterly analysis. These favorable impacts were only partly offset by an unfavorable volumetric usage impact (net of weather mitigation) totaling $34.9 at Spire Alabama.

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The year-over-year increase in Gas Utility contribution margin was attributable to the following factors:

Spire Missouri – 2021 and 2022 rate case outcomes	$	59.7
Spire EnergySouth		4.4
Spire Missouri – Volumetric usage (including weather mitigation impact)		4.0
Spire Alabama – Rate adjustment under RSE mechanism, net		2.6
Spire Alabama – Volumetric usage (including weather mitigation impact)		(3.8	)
All other factors		1.7
Total Variation	$	68.6

Year-to-date contribution margin growth was primarily driven by the $59.7 increase from the Spire Missouri 2022 and 2021 rate order implementations, a $4.4 increase at Spire EnergySouth, and $2.6 from favorable rate adjustments within the RSE framework at Spire Alabama, which includes the third quarter unfavorable CCM timing impact that is expected to reverse next quarter. The $4.0 favorable volume impact at Spire Missouri was almost completely offset by the $3.8 volume decline at Spire Alabama, both net of weather mitigation impact.

O&M expenses for the nine months ended June 30, 2023, were $44.4 higher than the prior year. Run-rate expenses increased $35.5 after removing the $8.9 impact of the NSC Transfer. The Gas Utility segment O&M increase reflects higher non-employee operations expense of $18.8, approximately $18 due to the change in treatment of Spire Missouri general overheads that were being deferred in the prior-year period, and higher bad debts expense of $4.8. These impacts were only partly offset by favorable insurance expense and lower employee-related expenses.

Taxes, other than income taxes, increased $25.9, and were driven by $19.6 in higher pass-through gross receipts taxes, along with higher property taxes resulting from the continued infrastructure build-out by the Utilities. Depreciation and amortization expenses for the first half of fiscal 2023 were $12.4 higher than the same period in the prior year primarily driven by continued infrastructure capital expenditures across all the Utilities.

Gas Marketing

Net income and net economic earnings reflect the strong operating results experienced in the current-year, driven by favorable market conditions that allowed the business to take advantage of regional basis differentials to optimize storage and transportation positions, only slightly offset by higher O&M costs associated with higher employee-related expenses. 

Midstream

Net income and net economic earnings for the Company’s Midstream segment increased $1.3 and $1.8, respectively, for the year-to-date ended June 30, 2023 versus the prior-year period. Strong net income performance at Spire Storage West reflecting optimized operational and withdrawal commitments that were partly offset by transaction expenses associated with the Spire Storage Salt Plains acquisition, whose impacts are excluded from NEE.

The $7.8 increase in revenue and contribution margin is attributable to the $5.6 growth at Spire Storage West and to the Spire Storage Salt Plains acquisition. The O&M increase of $3.7 is primarily the result of including Spire Storage Salt Plains operations and transaction fees.

Other

The Company’s other activities generated a $25.4 loss in the nine months ended June 30, 2023, $7.4 higher than the prior-year corresponding period. The larger current-year loss was driven by higher interest expense, reflecting both higher borrowings and interest rates, combined with higher corporate costs, offset partly by lower income tax expense.

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Spire Missouri

	Nine Months Ended June 30,
	2023			2022
Operating Income [GAAP]	$	222.7		$	208.5
Operation and maintenance expenses		225.6			190.1
Depreciation and amortization		117.8			107.4
Taxes, other than income taxes		132.0			111.0
Less: Gross receipts tax expense		(86.6	)		(70.6	)
Contribution Margin [Non-GAAP]		611.5			546.4
Natural gas costs		887.9			538.8
Gross receipts tax expense		86.6			70.6
Operating Revenues	$	1,586.0		$	1,155.8
Net Income	$	145.6		$	135.1

Revenues for the nine months ended June 30, 2023 were $430.2 higher than the comparable prior-year period. A key driver was an increase in gas recovery costs totaling $353.1. Further, $59.7 of the increase was attributable to fiscal 2023 results including the cumulative impacts of the implementation of the 2022 and 2021 rate orders. Higher gross receipts taxes contributed a $16.0 increase, and volume (net of weather mitigation) contributing $4.0 growth. These revenues growth drivers were only partially offset by lower off-system sales of $4.6.

Contribution margin for the nine months ended June 30, 2023 increased $65.1 from the same period in the prior year, largely as a result of the previously mentioned timing of the 2022 and 2021 rate case implementations generating $59.7 incremental contribution, combined with favorable volumetric impacts of $4.0.

Degree days in Spire Missouri’s service areas during the nine months ended June 30, 2023 were 9.6% warmer than normal, and 0.8% warmer than the same period last year. Spire Missouri’s total system volume sold and transported were 1,435.3 million CCF for the first nine months of this year, compared with 1,439.7 million CCF for the same period in the prior year. Total off-system volume sold and transported were 14.2 million CCF for the current year, compared with 17.6 million CCF a year ago.

Reported O&M expenses for the current year-to-date period increased $35.5 versus the prior year. Run-rate expenses increased $28.2 after removing the $7.3 impact of the NSC Transfer. The increase was largely due to approximately $18 of general overheads that were previously deferred and were not reflected in rates collected during the current year. The increase also reflects higher non-employee operations expense of $13.5 and higher bad debts expense of $2.7, partly offset by favorable insurance expense in the current year. 

Other income was higher by $14.5, after removing the $7.3 due to the NSC Transfer. This variance is primarily attributable to increased inventory carrying cost credits, combined with favorable mark-to-market valuations on unqualified retirement trusts. Interest expense increased $28.1, primarily reflecting higher short-term interest rates and net long-term debt issuances in the current year.

Resulting net income for the nine months ended June 30, 2023 represents a $10.5 increase versus the prior-year period.

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Spire Alabama

	Nine Months Ended June 30,
	2023			2022
Operating Income [GAAP]	$	119.4		$	129.0
Operation and maintenance expenses		103.0			96.6
Depreciation and amortization		51.5			50.1
Taxes, other than income taxes		36.0			32.1
Less: Gross receipts tax expense		(25.5	)		(22.5	)
Contribution Margin [Non-GAAP]		284.4			285.3
Natural gas costs		173.9			138.6
Gross receipts tax expense		25.5			22.5
Operating Revenues	$	483.8		$	446.4
Net Income	$	70.5		$	85.1

Revenues for the nine months ended June 30, 2023 were $37.4 higher than the comparable prior-year period. A key driver was an increase in gas recovery costs totaling $66.0. Further, $4.0 of the increase was attributable to fiscal 2023 results including favorable adjustments under the RSE framework, despite reflecting an $8.2 unfavorable CCM benefit timing impact. Revenue in the current year also benefited $3.0 due to higher gross receipts taxes. These growth drivers were only partially offset by $34.9 unfavorable volume impacts (net of weather mitigation).

Contribution margin for the nine months ended June 30, 2023, decreased $0.9 from the same period in the prior year, as favorable RSE adjustments of $2.6 were more than offset by unfavorable volumetric impacts of $3.8. As previously noted, the net favorable RSE adjustments include an $8.2 unfavorable CCM benefit timing impact that is expected to reverse in the fourth quarter of 2023.

As measured in degree days, temperatures in Spire Alabama’s service area during the nine months ended June 30, 2023, were 18.8% warmer than normal and 10.7% warmer than a year ago. Spire Alabama’s total system volume sold and transported were 784.7 million CCF for the nine months ended June 30, 2023, compared with 793.8 million CCF for the same period in the prior year. Total off-system volume sold and transported were 57.2 million CCF for the first nine months this year, compared with 26.7 million CCF for the comparable year-ago period.

Reported O&M expenses for year-to-date fiscal 2023 increased $6.4 versus the comparable prior-year period. Run-rate expenses increased $5.0 after removing the $1.4 impact of the NSC Transfer. The increase was largely due to higher non-employee operations expense, a $1.6 increase in bad debts expense, partly offset by lower employee-related expenses. 

Depreciation and amortization expenses were up $1.4, the result of continued investment in infrastructure upgrades. Interest expense for the nine months ended June 30, 2023 increased $11.0 versus the prior-year period, the result of significantly higher short-term interest rates and, to a lesser extent, higher levels of long-term debt.

For the nine months ended June 30, 2023, resulting net income decreased $14.6 versus the prior-year period.

LIQUIDITY AND CAPITAL RESOURCES

Recent Cash Flows

	Nine Months Ended June 30,
Cash Flow Summary	2023			2022
Net cash provided by operating activities	$	404.1		$	204.6
Net cash used in investing activities		(516.4	)		(398.3	)
Net cash provided by financing activities		116.8			212.5

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For the nine months ended June 30, 2023, net cash from operating activities improved $199.5 from the corresponding period of fiscal 2022. The key drivers of the favorable change are the $20.7 increase in net income (discussed above), coupled with changes related to regulatory timing and fluctuation in working capital items (as discussed below in the Future Cash Requirements section).

For the nine months ended June 30, 2023, net cash used in investing activities was $118.1 greater than for the same period in the prior year. As discussed in Note 1 of the Notes to Financial Statements in Item 1, Spire's Midstream segment acquired a natural gas storage facility, now named Spire Storage Salt Plains, for $37.0. Total capital expenditures were $80.8 higher than last year, with a $48.2 spending increase in the Utilities and a $37.1 increase for Spire Storage, partially offset by a $5.6 spending decline at Spire STL Pipeline.

Lastly, for the nine months ended June 30, 2023, net cash provided by financing activities decreased $95.7 versus the nine months ended June 30, 2022. Current-year long-term debt issuances were $755.0, or $455.0 higher than a year ago, and repayments of long-term debt in the current-year period declined $24.6 compared to the prior-year period. Offsetting a substantial portion of the higher net long-term debt issuances was a $517.1 net increase in repayments of short-term debt. Cash from the issuance of common stock in the current-year period was $4.0, a decline of $47.9 from the comparative period; see the discussion regarding Spire's forward sales of stock under its ATM program in Note 4 of the Notes to Financial Statements in Item 1. Finally, dividends paid on common stock rose $6.6 in the first nine months of fiscal 2023 compared to the first nine months of fiscal 2022.

Future Cash Requirements

The Company’s short-term borrowing requirements typically peak during colder months when the Utilities borrow money to cover the lag between when they purchase natural gas and when their customers pay for that gas. Changes in the wholesale cost of natural gas (including cash payments for margin deposits associated with Spire Missouri’s use of natural gas derivative instruments), variations in the timing of collections of gas cost under the Utilities’ PGA clauses and GSA riders, the seasonality of accounts receivable balances, and the utilization of storage gas inventories cause short-term cash requirements to vary during the year and from year to year, and may cause significant variations in the Company’s cash provided by or used in operating activities.

Spire’s material cash requirements as of June 30, 2023, are related to capital expenditures, business acquisitions, principal and interest payments on long-term debt, natural gas purchase obligations, and dividends. Except for the issuance of debt described in Note 6 and the business acquisition agreement described in the Commitments section of Note 11 of the Notes to Financial Statements in Item 1, there were no material changes outside the ordinary course of business from the future cash requirements discussed in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2022. Total Company capital expenditures are planned to be $700 for fiscal 2023.

Source of Funds

It is management’s view that the Company, Spire Missouri and Spire Alabama have adequate access to capital markets and will have sufficient capital resources, both internal and external, to meet anticipated requirements. Their debt is rated by two rating agencies: Standard & Poor’s Corporation (“S&P”) and Moody’s Investors Service (“Moody’s”). As of June 30, 2023, the debt ratings of the Company, Spire Missouri and Spire Alabama (shown in the following table) remain at investment grade with a stable outlook (other than Moody’s negative outlook for Spire Alabama debt).

	S&P	Moody’s
Spire Inc. senior unsecured long-term debt	BBB+	Baa2
Spire Inc. preferred stock	BBB	Ba1
Spire Inc. short-term debt	A-2	P-2
Spire Missouri senior secured long-term debt	A	A1
Spire Alabama senior unsecured long-term debt	A-	A2

Cash and Cash Equivalents

Bank deposits were used to support working capital needs of the business. Spire had no temporary cash investments as of June 30, 2023.

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Short-term Debt

The Company’s short-term cash requirements can be met through the sale of up to $1,300.0 of commercial paper or through the use of Spire’s $1,300.0 revolving credit facility. For information about short-term borrowings, see Note 6 of the Notes to Financial Statements in Item 1.

Long-term Debt and Equity

At June 30, 2023, including the current portion but excluding unamortized discounts and debt issuance costs, Spire had long-term debt totaling $3,982.7, of which $2,048.0 was issued by Spire Missouri, $750.0 was issued by Spire Alabama, and $229.7 was issued by other subsidiaries. For information about long-term debt issued this fiscal year, see Note 6 of the Notes to Financial Statements in Item 1.

Effective March 5, 2022, Spire Missouri was authorized by the MoPSC to issue conventional term loans, first mortgage bonds, unsecured debt, preferred stock and common stock in an aggregate amount of up to $800.0 for financings placed any time before December 31, 2024. Under this authorization through April 2023, Spire Missouri has issued $40.4 of common stock, a $250.0 term loan, and $400.0 of first mortgage bonds. Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

Spire has a shelf registration statement on Form S-3 on file with the U.S. Securities and Exchange Commission (SEC) for the issuance and sale of up to 250,000 shares of common stock under its Dividend Reinvestment and Direct Stock Purchase Plan. There were 249,924 and 244,715 shares at June 30, 2023 and July 31, 2023, respectively, remaining available for issuance under this Form S-3. Spire and Spire Missouri also have a universal shelf registration statement on Form S-3 on file with the SEC for the issuance of various equity and debt securities, which expires on May 9, 2025.

Spire has an “at-the-market” (ATM) equity distribution agreement, pursuant to which the Company may offer and sell, from time to time, shares of its common stock (including shares of common stock that may be sold pursuant to forward sale agreements entered into in connection with the ATM equity distribution agreement). In the second and third quarters of fiscal 2023, Spire executed forward sale agreements for a total of 2,315,921 shares, 1,744,549 of which must be settled on or before December 28, 2023 and 571,372 of which must be settled by the end of September 2023. Had all shares under the forward agreements been settled as of June 30, 2023, it would have generated net proceeds of $149.7. As of June 30, 2023, Spire may sell additional shares with an aggregate offering price of up to $17.9 under the current Board of Directors authorization expiring May 2025. For additional information about the ATM program, see Note 4 of the Notes to Financial Statements in Item 1.

Taking into account the current portion of long-term debt, the Company’s long-term consolidated capitalization consisted of 42% and 46% equity at June 30, 2023 and September 30, 2022, respectively.

ENVIRONMENTAL MATTERS

The Utilities and other Spire subsidiaries own and operate natural gas distribution, transmission and storage facilities, the operations of which are subject to various environmental laws, regulations, and interpretations. While environmental issues resulting from such operations arise in the ordinary course of business, such issues have not materially affected the Company’s, Spire Missouri’s, or Spire Alabama’s financial position and results of operations. As environmental laws, regulations, and interpretations change, however, the Company and the Utilities may be required to incur additional costs. For information relative to environmental matters, see Contingencies in Note 11 of the Notes to Financial Statements in Item 1.

REGULATORY MATTERS

For discussions of regulatory matters for Spire, Spire Missouri, and Spire Alabama, see Note 5, Regulatory Matters, of the Notes to Financial Statements in Item 1.

ACCOUNTING PRONOUNCEMENTS

The Company, Spire Missouri and Spire Alabama have evaluated or are in the process of evaluating the effects that recently issued accounting standards will have on the companies’ financial position or results of operations upon adoption, but none are currently expected to have a significant impact.

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CRITICAL ACCOUNTING ESTIMATES

Our discussion and analysis of our financial condition, results of operations, liquidity and capital resources are based upon our financial statements, which have been prepared in accordance with GAAP, which requires that we make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. We evaluate our estimates on an ongoing basis. We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. Our critical accounting estimates used in the preparation of our financial statements are described in Item 7 of Spire, Spire Missouri, and Spire Alabama’s combined Annual Report on Form 10-K for the fiscal year ended September 30, 2022, and include regulatory accounting, employee benefits and postretirement obligations, impairment of long-lived assets, and income taxes. There were no significant changes to critical accounting estimates during the nine months ended June 30, 2023.

For discussion of other significant accounting policies, see Note 1 of the Notes to Financial Statements included in this Form 10-Q as well as Note 1 of the Notes to Financial Statements included in Spire, Spire Missouri, and Spire Alabama’s combined Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

MARKET RISK

There were no material changes in the Company’s commodity price risk or counterparty credit risk as of June 30, 2023, relative to the corresponding information provided in the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

Spire enters into cash flow hedges through execution of interest rate swap contracts to protect itself against adverse movements in interest rates. At June 30, 2023, the following swaps were outstanding:

•  From the first quarter of fiscal 2021, one swap contract remains outstanding. The remaining outstanding contract is a ten-year interest rate swap that has a notional amount of $50.0 with a fixed interest rate of 1.49180%. The Company recorded a $0.4 mark-to-market loss to accumulated other comprehensive income on the swap for the nine months ended June 30, 2023.

•  From the second quarter of 2022, two swap contracts remain outstanding. Both contracts are ten-year interest rate swap contracts; the first swap has a notional amount of $75.o with a fixed interest rate of 1.6475%, while the second swap has a notional amount of $25.0 with a fixed interest rate of 1.746%. The Company recorded a $0.8 mark-to-market loss to accumulated other comprehensive income on these swaps for the nine months ended June 30, 2023.

•  From the first quarter of fiscal 2023, one swap contract is outstanding. The remaining outstanding contract is a ten-year interest rate swap that has a notional amount of $50.0 with a fixed interest rate of 3.4480%. The Company recorded a $0.9 mark-to-market loss to accumulated other comprehensive income on this swap for the nine months ended June 30, 2023.

•  In the second quarter of fiscal 2023, the Company entered into multiple two-year interest rate swap contracts with a cumulative total notional amount of $100.0 with fixed interest rates ranging from 3.385% to 3.685%. The Company recorded an $1.2 mark-to-market gain to accumulated other comprehensive income on these swaps for the nine months ended June 30, 2023.

•  In the third quarter of fiscal 2023, the Company entered into two ten-year interest rate swap contracts with a cumulative total notional amount of $50.0 with fixed interest rates of 2.902% for the one contract and 3.018% for the other. The Company also entered into a thirty-year swap with a notional amount of $50.0 and a fixed interest rate of 2.747%%. The Company recorded an $3.1 mark-to-market gain to accumulated other comprehensive income on these swaps for the nine months ended June 30, 2023.

As of June 30, 2023, the Company has recorded through accumulated other comprehensive income a cumulative mark-to-market net gain of $21.9 on open swap contracts.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk

For this discussion, see Part I, Item 2, Management’s Discussion and Analysis of Financial Condition and Results of Operations – Market Risk.

Item 4. Controls and Procedures

Spire

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon such evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Change in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2023, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Spire Missouri

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2023, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Spire Alabama

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2023, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

For a description of legal proceedings, environmental matters and regulatory matters, see Note 11, Commitments and Contingencies, and Note 5, Regulatory Matters, of the Notes to Financial Statements in Item 1 of Part I.

Item 1A. Risk Factors

There were no material changes in the Company’s risk factors from those disclosed in Part I, Item 1A of the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The only repurchases of Spire’s common stock in the quarter were pursuant to elections by employees to have shares of stock withheld to cover employee tax withholding obligations upon the vesting of performance-based and time-vested restricted stock and stock units. The following table provides information on those repurchases.

Period	(a) Total Number of Shares Purchased		(b) Average Price Paid Per Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		(d) Maximum Number of Shares That May Yet be Purchased Under the Plans or Programs
April 1, 2023 – April 30, 2023		—	$	—		—		—
May 1, 2023 – May 31, 2023		262		67.64		—		—
June 1, 2023 – June 30, 2023		—		—		—		—
Total		262		67.64		—		—

Spire Missouri’s outstanding first mortgage bonds contain restrictions on its ability to pay cash dividends on its common stock. As of June 30, 2023, all of Spire Missouri’s retained earnings were free from such restrictions.

Item 3. Defaults upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the quarterly period ended June 30, 2023, no director or officer of the Company adopted or terminated any contract, instruction or written plan for the purchase or sale of securities of the Company intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any “non-Rule 10b5-1 trading arrangement” (as defined in the Exchange Act).

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Item 6. Exhibits

Exhibit No.	Description
3.1*	Bylaws of Spire Inc., as amended, effective as of July 27, 2023; filed as Exhibit 3.1 to the Company's Current Report on Form 8-K filed July 28, 2023.
31.1	CEO and CFO Certifications under Exchange Act Rule 13a-14(a) of Spire Inc.
31.2	CEO and CFO Certifications under Exchange Act Rule 13a-14(a) of Spire Missouri Inc.
31.3	CEO and CFO Certifications under Exchange Act Rule 13a-14(a) of Spire Alabama Inc.
32.1	CEO and CFO Section 1350 Certifications of Spire Inc.
32.2	CEO and CFO Section 1350 Certifications of Spire Missouri Inc.
32.3	CEO and CFO Section 1350 Certifications of Spire Alabama Inc.
101	Interactive Data Files including the following information from the Quarterly Report on Form 10-Q for the period ended June 30, 2023, formatted in inline extensible business reporting language (“Inline XBRL”): (i) Cover Page Interactive Data and (ii) the Financial Statements included in Item 1.
104	Cover Page Interactive Data File (formatted in Inline XBRL and included in the Interactive Data Files submitted under Exhibit 101).

   *   Incorporated herein by reference and made a part hereof. Spire Inc. File No. 1-16681.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each of the registrants has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Spire Inc.
Date:	August 2, 2023	By:	/s/ Steven P. Rasche
			Steven P. Rasche
			Executive Vice President and Chief Financial Officer
			(Authorized Signatory and Principal Financial Officer)

		Spire Missouri Inc.
Date:	August 2, 2023	By:	/s/ Timothy W. Krick
			Timothy W. Krick
			Controller and Chief Accounting Officer
			(Authorized Signatory and Chief Accounting Officer)

		Spire Alabama Inc.
Date:	August 2, 2023	By:	/s/ Timothy W. Krick
			Timothy W. Krick
			Chief Accounting Officer
			(Authorized Signatory and Chief Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, Suzanne Sitherwood, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Suzanne Sitherwood
			Suzanne Sitherwood
			President and Chief Executive Officer

CERTIFICATION

I, Steven P. Rasche, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Steven P. Rasche
			Steven P. Rasche
			Executive Vice President and Chief Financial Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Steven L. Lindsey, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Missouri Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Steven L. Lindsey
			Steven L. Lindsey
			Chief Executive Officer

CERTIFICATION

I, Adam W. Woodard, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Missouri Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Adam W. Woodard
			Adam W. Woodard
			Chief Financial Officer

EX-31.3

Exhibit 31.3

CERTIFICATION

I, Steven L. Lindsey, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Alabama Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Steven L. Lindsey
			Steven L. Lindsey
			Chief Executive Officer

CERTIFICATION

I, Adam W. Woodard, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Spire Alabama Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 2, 2023	Signature:	/s/ Adam W. Woodard
			Adam W. Woodard
			Chief Financial Officer

EX-32.1

Exhibit 32.1

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Suzanne Sitherwood, President and Chief Executive Officer of Spire Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Inc.

Date: August 2, 2023	Signature:	/s/ Suzanne Sitherwood
		Suzanne Sitherwood
		President and Chief Executive Officer

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Steven P. Rasche, Executive Vice President and Chief Financial Officer of Spire Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Inc.

Date: August 2, 2023	Signature:	/s/ Steven P. Rasche
		Steven P. Rasche
		Executive Vice President and Chief Financial Officer

EX-32.2

Exhibit 32.2

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Steven L. Lindsey, Chief Executive Officer of Spire Missouri Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Missouri Inc.

Date: August 2, 2023	Signature:	/s/ Steven L. Lindsey
		Steven L. Lindsey
		Chief Executive Officer

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Adam W. Woodard, Chief Financial Officer of Spire Missouri Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Missouri Inc.

Date: August 2, 2023	Signature:	/s/ Adam W. Woodard
		Adam W. Woodard
		Chief Financial Officer

EX-32.3

Exhibit 32.3

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Steven L. Lindsey, Chief Executive Officer of Spire Alabama Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Alabama Inc.

Date: August 2, 2023	Signature:	/s/ Steven L. Lindsey
		Steven L. Lindsey
		Chief Executive Officer

Section 1350 Certification

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to §906 of the Sarbanes-Oxley Act of 2002, I, Adam W. Woodard, Chief Financial Officer of Spire Alabama Inc., hereby certify that:

(a) To the best of my knowledge, the accompanying report on Form 10-Q for the period ended June 30, 2023, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(b) To the best of my knowledge, the information contained in the accompanying report on Form 10-Q for the period ended June 30, 2023, fairly presents, in all material respects, the financial condition and results of operations of Spire Alabama Inc.

Date: August 2, 2023	Signature:	/s/ Adam W. Woodard
		Adam W. Woodard
		Chief Financial Officer

XML

Document And Entity Information - shares	9 Months Ended
	Jun. 30, 2023	Jul. 31, 2023
Document Information [Line Items]
Entity Central Index Key	0001126956
Entity Registrant Name	Spire Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2023
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	1-16681
Entity Address, Address Line One	700 Market Street
Entity Address, City or Town	St. Louis
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63101
City Area Code	314
Local Phone Number	342-0500
Entity Incorporation, State or Country Code	MO
Entity Tax Identification Number	74-2976504
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		52,603,138
Spire Missouri [Member]
Document Information [Line Items]
Entity Central Index Key	0000057183
Entity Registrant Name	Spire Missouri Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Entity File Number	1-1822
Entity Address, Address Line One	700 Market Street
Entity Address, City or Town	St. Louis
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63101
City Area Code	314
Local Phone Number	342-0500
Entity Incorporation, State or Country Code	MO
Entity Tax Identification Number	43-0368139
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		25,325
Spire Alabama Inc [Member]
Document Information [Line Items]
Entity Central Index Key	0000003146
Entity Registrant Name	Spire Alabama Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Entity File Number	2-38960
Entity Address, Address Line One	605 Richard Arrington Blvd N
Entity Address, City or Town	Birmingham
Entity Address, State or Province	AL
Entity Address, Postal Zip Code	35203
City Area Code	205
Local Phone Number	326-8100
Entity Incorporation, State or Country Code	AL
Entity Tax Identification Number	63-0022000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,972,052
Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares
Trading Symbol	SR.PRA
Security Exchange Name	NYSE
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock $1.00 par value
Trading Symbol	SR
Security Exchange Name	NYSE

XML

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating Revenues	$ 418.5	$ 448.0	$ 2,355.9	$ 1,884.3
Operating Expenses:
Natural gas	169.8	203.3	1,175.5	844.5
Operation and maintenance	125.5	102.3	389.7	331.9
Depreciation and amortization	64.3	60.4	189.0	176.2
Taxes, other than income taxes	46.9	44.1	179.2	153.3
Total Operating Expenses	406.5	410.1	1,933.4	1,505.9
Operating Income	12.0	37.9	422.5	378.4
Interest Expense, Net	46.7	29.3	137.5	85.4
Other Income (Expense), Net	6.3	(12.1)	19.3	(8.1)
(Loss) Income Before Income Taxes	(28.4)	(3.5)	304.3	284.9
Income Tax (Benefit) Expense	(6.8)	(2.1)	55.7	57.0
Net (Loss) Income	(21.6)	(1.4)	248.6	227.9
Provision for preferred dividends	3.7	3.7	11.1	11.1
(Loss) income allocated to participating securities	(0.1)	0.0	0.4	0.3
Net (Loss) Income Available to Common Shareholders	$ (25.2)	$ (5.1)	$ 237.1	$ 216.5
Weighted Average Number of Common Shares Outstanding:
Basic (in shares)	52.5	52.2	52.5	51.9
Diluted (in shares)	52.5	52.2	52.6	52.0
Basic (Loss) Earnings Per Common Share (in dollars per share)	$ (0.48)	$ (0.10)	$ 4.52	$ 4.17
Diluted (Loss) Earnings Per Common Share (in dollars per share)	$ (0.48)	$ (0.10)	$ 4.51	$ 4.16
Operating Revenues	$ 418.5	$ 448.0	$ 2,355.9	$ 1,884.3
Spire Alabama Inc [Member]
Operating Revenues	113.1	115.7	483.8	446.4
Operating Expenses:
Natural gas	42.7	41.0	173.9	138.6
Operation and maintenance	33.4	29.2	103.0	96.6
Depreciation and amortization	17.5	16.9	51.5	50.1
Taxes, other than income taxes	9.3	8.6	36.0	32.1
Total Operating Expenses	102.9	95.7	364.4	317.4
Operating Income	10.2	20.0	119.4	129.0
Interest Expense, Net	8.7	5.2	26.0	15.0
Other Income (Expense), Net	0.4	(0.7)	1.1	(0.2)
(Loss) Income Before Income Taxes	1.9	14.1	94.5	113.8
Income Tax (Benefit) Expense	0.6	3.6	24.0	28.7
Net (Loss) Income	1.3	10.5	70.5	85.1
Weighted Average Number of Common Shares Outstanding:
Operating Revenues	$ 113.1	$ 115.7	$ 483.8	$ 446.4

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Jun. 30, 2023		Jun. 30, 2022		Jun. 30, 2023		Jun. 30, 2022
Net Income	$ (21.6)		$ (1.4)		$ 248.6		$ 227.9
Other Comprehensive Income (Loss), Before Tax:
Net hedging gain (loss) arising during the period	7.6		24.3		(2.2)		38.2
Amounts reclassified into regulatory liabilities	0.0		0.0		(17.5)		0.0
Amounts reclassified into net income	(0.8)		(0.2)		(1.6)		(0.9)
Net gain (loss) on cash flow hedging derivative instruments	6.8		24.1		(21.3)		37.3
Net gain on defined benefit pension and other postretirement plans	0.0		0.2		0.2		0.4
Net unrealized gain (loss) on available for sale securities	0.1		(0.1)		0.1		(0.3)
Other Comprehensive Income (Loss), Before Tax	6.9		24.2		(21.0)		37.4
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss)	1.6		5.7		(5.0)		8.8
Other Comprehensive Income (Loss), Net of Tax	5.3		18.5		(16.0)		28.6
Comprehensive (Loss) Income	(16.3)		17.1		232.6		256.5
Operating Revenues	418.5		448.0		2,355.9		1,884.3
Operating Expenses:
Natural gas	169.8		203.3		1,175.5		844.5
Operation and maintenance	125.5		102.3		389.7		331.9
Depreciation and amortization	64.3		60.4		189.0		176.2
Taxes, other than income taxes	46.9		44.1		179.2		153.3
Total Operating Expenses	406.5		410.1		1,933.4		1,505.9
Operating Income	12.0		37.9		422.5		378.4
Interest Expense, Net	46.7		29.3		137.5		85.4
Other Income (Expense), Net	6.3		(12.1)		19.3		(8.1)
(Loss) Income Before Income Taxes	(28.4)		(3.5)		304.3		284.9
Income Tax (Benefit) Expense	(6.8)		(2.1)		55.7		57.0
Net (Loss) Income	(21.6)		(1.4)		248.6		227.9
Other Comprehensive Income, Net of Tax	5.3		18.5		(16.0)		28.6
Comprehensive (Loss) Income	(16.3)		17.1		232.6		256.5
Spire Missouri [Member]
Net Income	(13.8)	[1]	(8.4)		145.6	[1]	135.1
Other Comprehensive Income (Loss), Before Tax:
Other Comprehensive Income (Loss), Net of Tax	0.0		0.2	[1]	0.2	[1]	0.4
Comprehensive (Loss) Income	(13.8)		(8.2)		145.8		135.5
Operating Revenues	253.8		236.7		1,586.0		1,155.8
Operating Expenses:
Natural gas	105.5		94.7		887.9		538.8
Operation and maintenance	71.1		59.5		225.6		190.1
Depreciation and amortization	40.0		37.3		117.8		107.4
Taxes, other than income taxes	34.4		32.3		132.0		111.0
Total Operating Expenses	251.0		223.8		1,363.3		947.3
Operating Income	2.8		12.9		222.7		208.5
Interest Expense, Net	24.9		14.7		71.5		43.4
Other Income (Expense), Net	4.7		(9.7)		15.6		(6.2)
(Loss) Income Before Income Taxes	(17.4)		(11.5)		166.8		158.9
Income Tax (Benefit) Expense	(3.6)		(3.1)		21.2		23.8
Net (Loss) Income	(13.8)	[1]	(8.4)		145.6	[1]	135.1
Other Comprehensive Income, Net of Tax	0.0		0.2	[1]	0.2	[1]	0.4
Comprehensive (Loss) Income	$ (13.8)		$ (8.2)		$ 145.8		$ 135.5

[1] Accumulated other comprehensive income (loss)

XML

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Millions	Jun. 30, 2023		Sep. 30, 2022		Jun. 30, 2022
ASSETS
Utility Plant	$ 8,016.7		$ 7,664.9		$ 7,549.7
Less: Accumulated depreciation and amortization	2,382.9		2,294.5		2,256.7
Net Utility Plant	5,633.8		5,370.4		5,293.0
Non-utility Property (net of accumulated depreciation and amortization of $65.7, $50.7 and $46.0 at June 30, 2023, September 30, 2022, and June 30, 2022, respectively)	582.7		491.4		476.9
Other Investments	102.5		87.8		90.5
Total Other Property and Investments	685.2		579.2		567.4
Other Property and Investments	685.2		579.2		567.4
Current Assets:
Cash and cash equivalents	5.3		6.5		16.0
Utility	245.9		210.8		266.1
Other	127.4		443.8		353.7
Allowance for credit losses	(34.7)		(31.9)		(32.6)
Delayed customer billings	58.6		21.3		45.4
Accounts receivable:
Utility	245.9		210.8		266.1
Other	127.4		443.8		353.7
Allowance for credit losses	(34.7)		(31.9)		(32.6)
Delayed customer billings	58.6		21.3		45.4
Inventories:
Natural gas	184.9		371.8		250.8
Propane gas	8.6		8.6		8.6
Materials and supplies	49.6		41.9		40.9
Regulatory assets	93.3		355.4		152.0
Prepayments	55.1		41.1		55.0
Other current assets	67.2		122.7		105.2
Total Current Assets	861.2		1,592.0		1,261.1
Deferred Charges and Other Assets:
Goodwill	1,171.6		1,171.6		1,171.6
Regulatory assets	1,421.2		1,112.4		1,205.6
Other	264.5		258.1		285.2
Total Deferred Charges and Other Assets	2,857.3		2,542.1		2,662.4
Total Assets	10,037.5		10,083.7		9,783.9
Capitalization:
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at June 30, 2023, September 30, 2022, and June 30, 2022)	242.0		242.0		242.0
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.6 million, 52.5 million, and 52.5 million shares issued and outstanding at June 30, 2023, September 30, 2022, and June 30, 2022, respectively)	52.6		52.5		52.5
Paid-in capital	1,578.3		1,571.3		1,570.0
Retained earnings	1,028.4		905.5		949.2
Accumulated other comprehensive income	31.2		47.2		32.2
Total Shareholders' Equity	2,932.5		2,818.5		2,845.9
Temporary equity	17.7		13.1		15.0
Long-term debt (less current portion)	3,553.3		2,958.5		3,207.9
Total Capitalization	6,503.5		5,790.1		6,068.8
Current Liabilities:
Current portion of long-term debt	406.6		281.2		31.2
Notes payable	557.6		1,037.5		709.2
Accounts payable	196.3		617.4		581.2
Advance customer billings	7.6		18.7		7.6
Wages and compensation accrued	35.9		50.2		50.0
Customer deposits	27.7		28.2		28.6
Taxes accrued	88.5		90.1		76.8
Regulatory liabilities	5.5		3.7		3.2
Other current liabilities	204.7		226.6		262.1
Total Current Liabilities	1,530.4		2,353.6		1,749.9
Deferred Credits and Other Liabilities:
Deferred income taxes	735.9		675.1		675.8
Pension and postretirement benefit costs	154.7		163.0		199.6
Asset retirement obligations	538.1		520.9		535.4
Regulatory liabilities	428.1		418.2		389.0
Other noncurrent liabilities	146.8		162.8		165.4
Total Deferred Credits and Other Liabilities	2,003.6		1,940.0		1,965.2
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	10,037.5		10,083.7		9,783.9
Spire Missouri [Member]
ASSETS
Utility Plant	4,831.2		4,550.4		4,498.7
Less: Accumulated depreciation and amortization	1,037.6		982.1		965.7
Net Utility Plant	3,793.6		3,568.3		3,533.0
Total Other Property and Investments	67.7		58.9		61.3
Other Property and Investments	67.7		58.9		61.3
Current Assets:
Cash and cash equivalents	0.0		0.0		7.0
Utility	186.8		131.5		162.2
Other	23.0		44.5		12.2
Allowance for credit losses	(28.7)		(24.9)		(25.1)
Delayed customer billings	57.0		16.1		43.7
Accounts receivable:
Utility	186.8		131.5		162.2
Other	23.0		44.5		12.2
Allowance for credit losses	(28.7)		(24.9)		(25.1)
Delayed customer billings	57.0		16.1		43.7
Inventories:
Natural gas	98.5		215.3		140.4
Propane gas	8.6		8.6		8.6
Materials and supplies	25.1		22.0		22.1
Regulatory assets	35.0		288.1		89.9
Prepayments	34.5		23.3		31.6
Total Current Assets	446.9		728.2		494.3
Deferred Charges and Other Assets:
Goodwill	210.2		210.2		210.2
Regulatory assets	819.1		547.6		664.6
Other	108.4		105.0		127.2
Total Deferred Charges and Other Assets	1,137.7		862.8		1,002.0
Total Assets	5,445.9		5,218.2		5,090.6
Capitalization:
Retained earnings	1,034.0		931.9		952.1
Accumulated other comprehensive income	(2.5)		(2.7)		(3.8)
Total Shareholders' Equity	1,847.7	[1]	1,745.4	[1]	1,764.5
Long-term debt (less current portion)	1,785.1		1,387.7		1,637.4
Total Capitalization	3,632.8		3,133.1		3,401.9
Paid-in capital and common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325 shares issued and outstanding)	816.2		816.2		816.2
Current Liabilities:
Current portion of long-term debt	250.0		250.0		0.0
Advance customer billings	0.0		7.0		0.0
Wages and compensation accrued	18.3		33.8		33.7
Customer deposits	5.8		6.5		7.1
Taxes accrued	49.3		50.4		41.0
Other current liabilities	43.6		45.6		45.1
Total Current Liabilities	671.7		970.9		538.3
Deferred Credits and Other Liabilities:
Deferred income taxes	533.7		500.1		501.6
Pension and postretirement benefit costs	96.4		115.5		142.0
Asset retirement obligations	113.9		110.6		147.8
Regulatory liabilities	346.1		331.8		300.8
Other noncurrent liabilities	51.3		56.2		58.2
Total Deferred Credits and Other Liabilities	1,141.4		1,114.2		1,150.4
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	5,445.9		5,218.2		5,090.6
Spire Missouri [Member] | Related Party [Member]
Current Assets:
Utility	7.1		3.7		1.7
Accounts receivable:
Utility	7.1		3.7		1.7
Current Liabilities:
Notes payable	228.1		445.3		285.4
Accounts payable	13.3		13.3		15.5
Spire Missouri [Member] | Nonrelated Party [Member]
Current Liabilities:
Accounts payable	63.3		119.0		110.5
Spire Alabama Inc [Member]
ASSETS
Utility Plant	2,803.8		2,732.6		2,663.0
Less: Accumulated depreciation and amortization	1,224.5		1,184.1		1,153.8
Net Utility Plant	1,579.3		1,548.5		1,509.2
Current Assets:
Cash and cash equivalents	0.5		2.4		3.7
Utility	50.1		69.9		92.9
Other	6.4		6.5		5.8
Allowance for credit losses	(5.3)		(6.3)		(6.6)
Delayed customer billings	1.4		4.8		1.6
Accounts receivable:
Utility	50.1		69.9		92.9
Other	6.4		6.5		5.8
Allowance for credit losses	(5.3)		(6.3)		(6.6)
Delayed customer billings	1.4		4.8		1.6
Inventories:
Natural gas	51.9		72.5		69.1
Materials and supplies	20.6		16.3		15.3
Regulatory assets	43.9		56.9		52.9
Prepayments	8.8		5.8		8.3
Total Current Assets	181.9		230.1		243.8
Deferred Charges and Other Assets:
Regulatory assets	576.7		538.2		514.1
Other	82.0		81.3		81.0
Total Deferred Charges and Other Assets	658.7		630.5		600.6
Total Assets	2,419.9		2,409.1		2,353.6
Deferred income taxes	0.0		11.0		5.5
Capitalization:
Retained earnings	646.6		589.1		613.7
Total Shareholders' Equity	933.5		906.0		930.6
Long-term debt (less current portion)	745.8		571.5		571.4
Total Capitalization	1,679.3		1,477.5		1,502.0
Paid-in capital and common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325 shares issued and outstanding)	286.9		316.9		316.9
Current Liabilities:
Accounts payable	28.2		85.6		85.7
Advance customer billings	5.9		9.9		6.1
Wages and compensation accrued	4.9		7.6		7.6
Customer deposits	19.3		19.0		18.9
Taxes accrued	31.6		31.3		29.3
Other current liabilities	12.2		22.4		21.3
Total Current Liabilities	217.4		441.1		373.3
Deferred Credits and Other Liabilities:
Deferred income taxes	12.8		0.0		0.0
Pension and postretirement benefit costs	52.3		40.5		50.9
Asset retirement obligations	411.0		398.7		373.7
Regulatory liabilities	20.8		23.0		24.0
Other noncurrent liabilities	26.3		28.3		29.7
Total Deferred Credits and Other Liabilities	523.2		490.5		478.3
Commitments and Contingencies (Note 11)
Total Capitalization and Liabilities	2,419.9		2,409.1		2,353.6
Spire Alabama Inc [Member] | Related Party [Member]
Current Assets:
Utility	3.6		1.3		0.8
Accounts receivable:
Utility	3.6		1.3		0.8
Current Liabilities:
Notes payable	108.1		260.9		196.3
Accounts payable	$ 7.2		$ 4.4		$ 8.1

[1] Accumulated other comprehensive income (loss)

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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Non-utility property, accumulated depreciation and amortization	$ 65.7	$ 50.7	$ 46.0
Preferred stock, par value (in dollars per share)	$ 25.00	$ 25.00	$ 25.00
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	70,000,000.0	70,000,000.0	70,000,000.0
Common stock, shares issued (in shares)	52,600,000	52,500,000	52,500,000
Common Stock, shares outstanding (in shares)	52,600,000	52,500,000	52,500,000
Depositary Shares [Member]
Preferred stock, shares authorized (in shares)	10,000,000.0	10,000,000.0	10,000,000.0
Preferred stock, shares issued (in shares)	10,000,000.0	10,000,000.0	10,000,000.0
Preferred stock, shares outstanding (in shares)	10,000,000.0	10,000,000.0	10,000,000.0
Spire Missouri [Member]
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	50,000,000.0	50,000,000.0	50,000,000.0
Common stock, shares issued (in shares)	25,325	25,325	25,325
Common Stock, shares outstanding (in shares)	25,325	25,325	25,325
Spire Alabama Inc [Member]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,000,000.0	3,000,000.0	3,000,000.0
Common stock, shares issued (in shares)	2,000,000.0	2,000,000.0	2,000,000.0
Common Stock, shares outstanding (in shares)	2,000,000.0	2,000,000.0	2,000,000.0

XML

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Spire Alabama Inc [Member] Common Stock [Member]	Spire Alabama Inc [Member] Additional Paid-in Capital [Member]	Spire Alabama Inc [Member] Retained Earnings [Member]	Spire Alabama Inc [Member]	Spire Missouri [Member] Common Stock [Member]	Spire Missouri [Member] Additional Paid-in Capital [Member]	Spire Missouri [Member] Retained Earnings [Member]	Spire Missouri [Member] AOCI Attributable to Parent [Member]	Spire Missouri [Member]		Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]		Total
Balance (in shares) at Sep. 30, 2021	1,972,052				24,577						51,684,883
Balance at Sep. 30, 2021	$ 0.0	$ 328.9	$ 552.6	$ 881.5	$ 0.1	$ 765.0	$ 817.0	$ (4.2)	$ 1,577.9		$ 51.7	$ 242.0	$ 1,517.9	$ 843.0	$ 3.6		$ 2,658.2
Net Income	0.0	0.0	85.1	85.1	0.0	0.0	135.1	0.0	135.1		$ 0.0	0.0	0.0	227.9	0.0	[1]	227.9
Dividend reinvestment plan (in shares)											18,514
Dividend reinvestment plan											$ 0.0	0.0	1.2	0.0	0.0		1.2
Stock-based compensation costs											$ 0.0	0.0	2.7	0.0	0.0		2.7
Stock activity under stock-based compensation plans (in shares)											91,293
Stock activity under stock-based compensation plans											$ 0.1	0.0	(0.1)	0.0	0.0		0.0
Employees’ tax withholding for stock-based compensation (in shares)											(27,533)
Employees’ tax withholding for stock-based compensation											$ 0.0	0.0	(1.7)	0.0	0.0		(1.7)
Temporary equity adjustment to redemption value											0.0	0.0	0.0	(3.4)	0.0		(3.4)
Common stock, dividends	0.0	0.0	(24.0)	(24.0)							0.0	0.0	0.0	(107.2)	0.0		(107.2)
Preferred stock dividends											0.0	0.0	0.0	(11.1)	0.0		(11.1)
Other Comprehensive Income, Net of Tax					$ 0.0	0.0	0.0	0.4	0.4		$ 0.0	0.0	0.0	0.0	28.6		28.6
Common stock issued (in shares)					748						719,625
Stock issued					$ 0.0	51.1	0.0	0.0	51.1		$ 0.7	0.0	50.0	0.0	0.0		50.7
Return of capital to Spire	$ 0.0	(12.0)	0.0	(12.0)
Balance (in shares) at Jun. 30, 2022	1,972,052				25,325						52,486,782
Balance at Jun. 30, 2022	$ 0.0	316.9	613.7	930.6	$ 0.1	816.1	952.1	(3.8)	1,764.5		$ 52.5	242.0	1,570.0	949.2	32.2	[1]	2,845.9
Balance (in shares) at Mar. 31, 2022	1,972,052				24,929						52,116,667
Balance at Mar. 31, 2022	$ 0.0	322.9	611.2	934.1	$ 0.1	788.3	960.5	(4.0)	1,744.9		$ 52.1	242.0	1,541.1	992.3	13.7	[1]	2,841.2
Net Income	0.0	0.0	10.5	10.5	0.0	0.0	(8.4)	0.0	(8.4)		$ 0.0	0.0	0.0	(1.4)	0.0		(1.4)
Dividend reinvestment plan (in shares)											5,245
Dividend reinvestment plan											$ 0.0	0.0	0.4	0.0	0.0	[1]	0.4
Stock-based compensation costs											$ 0.0	0.0	1.3	0.0	0.0	[1]	1.3
Stock activity under stock-based compensation plans (in shares)											(135)
Stock activity under stock-based compensation plans											$ 0.0	0.0	0.0	0.0	0.0		0.0
Employees’ tax withholding for stock-based compensation (in shares)											(620)
Employees’ tax withholding for stock-based compensation											$ 0.0	0.0	0.0	0.0	0.0	[1]	0.0
Temporary equity adjustment to redemption value											0.0	0.0	0.0	(2.2)	0.0	[1]	(2.2)
Common stock, dividends	0.0	0.0	(8.0)	(8.0)							0.0	0.0	0.0	(35.8)	0.0	[1]	(35.8)
Preferred stock dividends											0.0	0.0	0.0	(3.7)	0.0	[1]	(3.7)
Other Comprehensive Income, Net of Tax					$ 0.0	0.0	0.0	0.2	0.2	[1]	$ 0.0	0.0	0.0	0.0	18.5		18.5
Common stock issued (in shares)					396						365,625
Stock issued					$ 0.0	27.8	0.0	0.0	27.8		$ 0.4	0.0	27.2	0.0	0.0		27.6
Return of capital to Spire	$ 0.0	(6.0)	0.0	(6.0)
Balance (in shares) at Jun. 30, 2022	1,972,052				25,325						52,486,782
Balance at Jun. 30, 2022	$ 0.0	316.9	613.7	930.6	$ 0.1	816.1	952.1	(3.8)	1,764.5		$ 52.5	242.0	1,570.0	949.2	32.2	[1]	2,845.9
Balance (in shares) at Sep. 30, 2022	1,972,052				25,325						52,494,543
Balance at Sep. 30, 2022	$ 0.0	316.9	589.1	906.0	$ 0.1	816.1	931.9	(2.7)	1,745.4	[1]	$ 52.5	242.0	1,571.3	905.5	47.2		2,818.5
Net Income	0.0	0.0	70.5	70.5	0.0	0.0	145.6	0.0	145.6	[1]	$ 0.0		0.0	248.6	0.0	[1]	248.6
Dividend reinvestment plan (in shares)											16,488
Dividend reinvestment plan											$ 0.0	0.0	1.1	0.0	0.0		1.1
Stock-based compensation costs											$ 0.0	0.0	4.3	0.0	0.0		4.3
Stock activity under stock-based compensation plans (in shares)											64,077
Stock activity under stock-based compensation plans											$ 0.0	0.0	0.0	0.0	0.0		0.0
Employees’ tax withholding for stock-based compensation (in shares)											(17,679)
Employees’ tax withholding for stock-based compensation											$ 0.0	0.0	(1.3)	0.0	0.0		(1.3)
Temporary equity adjustment to redemption value											0.0	0.0	0.0	(0.2)	0.0		(0.2)
Common stock, dividends	0.0	0.0	(13.0)	(13.0)	0.0	0.0	(43.5)	0.0	(43.5)		0.0	0.0	0.0	(114.4)	0.0		(114.4)
Preferred stock dividends											0.0	0.0	0.0	(11.1)	0.0		(11.1)
Other Comprehensive Income, Net of Tax					$ 0.0	0.0	0.0	0.2	0.2	[1]	$ 0.0		0.0	0.0	(16.0)		(16.0)
Common stock issued (in shares)											40,500
Stock issued											$ 0.1	0.0	2.9	0.0	0.0		3.0
Return of capital to Spire	$ 0.0	(30.0)	0.0	(30.0)
Balance (in shares) at Jun. 30, 2023	1,972,052				25,325						52,597,929
Balance at Jun. 30, 2023	$ 0.0	286.9	646.6	933.5	$ 0.1	816.1	1,034.0	(2.5)	1,847.7	[1]	$ 52.6	242.0	1,578.3	1,028.4	31.2	[1]	2,932.5
Balance (in shares) at Mar. 31, 2023	1,972,052				25,325						52,593,433
Balance at Mar. 31, 2023	$ 0.0	289.9	645.3	935.2	$ 0.1	816.1	1,061.3	(2.5)	1,875.0	[1]	$ 52.6	242.0	1,576.5	1,089.5	25.9	[1]	2,986.5
Net Income	0.0	0.0	1.3	1.3	0.0	0.0	(13.8)	0.0	(13.8)	[1]	$ 0.0	0.0	0.0	(21.6)	0.0		(21.6)
Dividend reinvestment plan (in shares)											5,367
Dividend reinvestment plan											$ 0.0	0.0	0.4	0.0	0.0	[1]	0.4
Stock-based compensation costs											$ 0.0		1.4	0.0	0.0	[1]	1.4
Stock activity under stock-based compensation plans (in shares)											(609)
Stock activity under stock-based compensation plans											$ 0.0	0.0	0.0	0.0	0.0		0.0
Employees’ tax withholding for stock-based compensation (in shares)											(262)
Employees’ tax withholding for stock-based compensation											$ 0.0	0.0	0.0	0.0	0.0	[1]	0.0
Temporary equity adjustment to redemption value											0.0		0.0	2.8	0.0	[1]	2.8
Common stock, dividends					$ 0.0	0.0	(13.5)	0.0	(13.5)		0.0		0.0	(38.6)	0.0	[1]	(38.6)
Preferred stock dividends											0.0		0.0	(3.7)	0.0	[1]	(3.7)
Other Comprehensive Income, Net of Tax									0.0		$ 0.0	0.0	0.0	0.0	5.3		5.3
Return of capital to Spire	$ 0.0	(3.0)	0.0	(3.0)
Balance (in shares) at Jun. 30, 2023	1,972,052				25,325						52,597,929
Balance at Jun. 30, 2023	$ 0.0	$ 286.9	$ 646.6	$ 933.5	$ 0.1	$ 816.1	$ 1,034.0	$ (2.5)	$ 1,847.7	[1]	$ 52.6	$ 242.0	$ 1,578.3	$ 1,028.4	$ 31.2	[1]	$ 2,932.5

[1] Accumulated other comprehensive income (loss)

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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Common stock, dividends per share declared (in dollars per share)	$ 0.72	$ 0.685	$ 2.16	$ 2.055
Preferred stock dividends per share declared (in dollars per share)	$ 0.36875	$ 0.36875	$ 1.10625	$ 1.10625

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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2023		Jun. 30, 2022
Operating Activities:
Net Income	$ 248.6		$ 227.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	189.0		176.2
Deferred income taxes and investment tax credits	55.7		57.0
Changes in assets and liabilities:
Accounts receivable	284.1		9.1
Inventories	179.3		4.9
Regulatory assets and liabilities	(18.0)		(323.8)
Accounts payable	(405.6)		180.3
Delayed/advance customer billings, net	(48.5)		(60.8)
Taxes accrued	(2.3)		(2.2)
Other assets and liabilities	(88.4)		(70.1)
Other	10.2		6.1
Net cash provided by operating activities	404.1		204.6
Investing Activities:
Capital expenditures	(483.3)		(402.5)
Business acquisition	(37.0)		0.0
Other	3.9		4.2
Net cash used in investing activities	(516.4)		(398.3)
Financing Activities:
Issuance of long-term debt	755.0		300.0
Repayment of long-term debt	(31.2)		(55.8)
(Repayment) issuance of short-term debt, net	(479.9)		37.2
Issuance of common stock	4.0		51.9
Dividends paid on common stock	(112.5)		(105.9)
Dividends paid on preferred stock	(11.1)		(11.1)
Other financing activities	(7.5)		(3.8)
Net cash provided by financing activities	116.8		212.5
Net Increase in Cash, Cash Equivalents, and Restricted Cash	4.5		18.8
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	20.5		11.3
Cash, Cash Equivalents, and Restricted Cash at End of Period	25.0		30.1
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(118.2)		(80.2)
Income taxes	(1.8)		(0.7)
Spire Missouri [Member]
Operating Activities:
Net Income	145.6	[1]	135.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	117.8		107.4
Deferred income taxes and investment tax credits	21.2		23.8
Changes in assets and liabilities:
Accounts receivable	(33.3)		167.6
Inventories	113.7		29.4
Regulatory assets and liabilities	1.2		(260.8)
Accounts payable	(43.6)		25.8
Delayed/advance customer billings, net	(47.9)		(61.0)
Taxes accrued	(1.1)		(0.2)
Other assets and liabilities	(88.4)		(48.5)
Other	1.3		1.0
Net cash provided by operating activities	186.5		119.6
Investing Activities:
Capital expenditures	(324.8)		(258.7)
Other	2.9		2.6
Net cash used in investing activities	(321.9)		(256.1)
Financing Activities:
Issuance of long-term debt	400.0		300.0
Issuance of common stock	0.0		51.1
Dividends paid on common stock	(43.5)		0.0
Other financing activities	(3.9)		(2.1)
Net cash provided by financing activities	135.4		143.5
Net Increase in Cash, Cash Equivalents, and Restricted Cash	0.0		7.0
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	0.0		0.0
Cash, Cash Equivalents, and Restricted Cash at End of Period	0.0		7.0
Repayment of short-term debt, net	0.0		(250.0)
(Repayments to) Borrowings from Spire, net	(217.2)		44.5
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(64.7)		(43.9)
Income taxes	0.0		0.0
Spire Alabama Inc [Member]
Operating Activities:
Net Income	70.5		85.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	51.5		50.1
Deferred income taxes and investment tax credits	24.0		28.7
Changes in assets and liabilities:
Accounts receivable	16.6		(42.7)
Inventories	16.4		(38.1)
Regulatory assets and liabilities	(16.8)		(67.4)
Accounts payable	(39.9)		41.6
Delayed/advance customer billings, net	(0.6)		(0.1)
Taxes accrued	0.3		(1.2)
Other assets and liabilities	3.3		(17.4)
Other	0.3		0.0
Net cash provided by operating activities	125.6		38.6
Investing Activities:
Capital expenditures	(98.4)		(105.0)
Other	0.7		0.7
Net cash used in investing activities	(97.7)		(104.3)
Financing Activities:
Issuance of long-term debt	175.0		0.0
Repayment of long-term debt	0.0		(50.0)
Dividends paid on common stock	(21.0)		(16.0)
Other financing activities	(1.0)		0.0
Net cash provided by financing activities	(29.8)		69.4
Net Increase in Cash, Cash Equivalents, and Restricted Cash	(1.9)		3.7
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	2.4		0.0
Cash, Cash Equivalents, and Restricted Cash at End of Period	0.5		3.7
(Repayments to) Borrowings from Spire, net	(152.8)		147.4
Return of capital to Spire	(30.0)		(12.0)
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(23.3)		(14.7)
Income taxes	$ 0.0		$ 0.0

[1] Accumulated other comprehensive income (loss)

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Note 1 - Summary of Significant Accounting Policies

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Significant Accounting Policies [Text Block]

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION – These notes are an integral part of the accompanying unaudited financial statements of Spire Inc. (“Spire” or the “Company”) presented on a consolidated basis, Spire Missouri Inc. (“Spire Missouri”) and Spire Alabama Inc. (“Spire Alabama”). Spire Missouri, Spire Alabama and Spire EnergySouth Inc. (“Spire EnergySouth”) are wholly owned subsidiaries of Spire. Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth (Spire Gulf Inc. and Spire Mississippi Inc.) are collectively referred to as the “Utilities.”

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information with the instructions to Form 10-Q and Rule 10-01 of Regulation S‑X. Accordingly, they do not include all the disclosures required for complete financial statements. In the opinion of management, the accompanying unaudited financial statements include all adjustments necessary for the fair presentation of the results of operations for the periods presented. This Form 10-Q should be read in conjunction with the Notes to Financial Statements contained in Spire, Spire Missouri and Spire Alabama’s combined Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

The consolidated financial position, results of operations, and cash flows of Spire include the accounts of the Company and all its subsidiaries. Transactions and balances between consolidated entities have been eliminated from the consolidated financial statements of Spire. In compliance with GAAP, transactions between Spire Missouri and Spire Alabama and their affiliates, as well as intercompany balances on their balance sheets, have not been eliminated from their separate financial statements.

Certain information is presented by reportable segment, as described below. Effective during the first quarter of fiscal 2023, the Company changed its reportable segments to reflect changes in the way its chief operating decision maker evaluates the performance of its operations, develops strategy and allocates capital resources. Specifically, Midstream, which was formerly included in Other, is now reported separately. The Company's historical segment disclosures have been recast to be consistent with the current presentation.

NATURE OF OPERATIONS – Spire has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment consists of the regulated natural gas distribution operations of the Company and is the core business segment of Spire in terms of revenue and earnings. The Gas Utility segment is comprised of the operations of: Spire Missouri, serving St. Louis, Kansas City, and other areas in Missouri; Spire Alabama, serving central and northern Alabama; and the subsidiaries of Spire EnergySouth, serving the Mobile, Alabama area and south-central Mississippi. The Gas Marketing segment includes Spire’s largest gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The Midstream segment includes Spire Storage and Spire STL Pipeline, which are subsidiaries engaged in the storage and transportation of natural gas. The activities of the Company’s other subsidiaries are reported as Other and are described in Note 10, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment. 

The Company’s earnings are derived primarily from its Gas Utility segment. Due to the seasonal nature of the Utilities’ business and the volumetric Spire Missouri rate design, earnings are typically concentrated during the heating season of November through April each fiscal year. As a result, the interim statements of income for Spire, Spire Missouri and Spire Alabama are not necessarily indicative of annual results or representative of succeeding quarters of the fiscal year.

REGULATED OPERATIONS – The Utilities account for their regulated operations in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 980, Regulated Operations. This topic sets forth the application of GAAP for those companies whose rates are established by or are subject to approval by an independent third-party regulator. The provisions of this accounting guidance require, among other things, that financial statements of a regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. In addition, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities). Management believes that the current regulatory environment supports the continued use of these regulatory accounting principles and that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

As authorized by the Missouri Public Service Commission (MoPSC), the Mississippi Public Service Commission (MSPSC) and the Alabama Public Service Commission (APSC), the Purchased Gas Adjustment (PGA) clauses and Gas Supply Adjustment (GSA) riders allow the Utilities to pass through to customers the cost of purchased gas supplies. Regulatory assets and liabilities related to the PGA clauses and the GSA riders are both labeled Unamortized Purchased Gas Adjustments herein. See additional information about regulatory assets and liabilities in Note 5, Regulatory Matters.

DERIVATIVES – In the course of their business, certain subsidiaries of Spire enter into commitments associated with the purchase or sale of natural gas. Certain of their derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of FASB ASC Topic 815, Derivatives and Hedging. Those contracts are accounted for as executory contracts and recorded on an accrual basis. Revenues and expenses from such contracts are recorded gross. Contracts not designated as normal purchases or normal sales are recorded as derivatives with changes in fair value recognized in earnings in the periods prior to physical delivery. Certain of Spire Marketing’s wholesale purchase and sale transactions are classified as trading activities for financial reporting purposes, with income and expenses presented on a net basis in natural gas expenses in the Condensed Consolidated Statements of Income. Spire also enters into cash flow hedges through execution of interest rate swap contracts to protect itself against adverse movements in interest rates.

TRANSACTIONS WITH AFFILIATES – Transactions between affiliates of the Company have been eliminated from the consolidated financial statements of Spire. As reflected in their separate financial statements, Spire Missouri and Spire Alabama borrowed funds from the Company and incurred related interest. Spire Missouri and Spire Alabama also participated in normal intercompany shared services transactions. Spire Missouri’s and Spire Alabama’s other transactions with affiliates are presented below:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire Missouri
Purchases of natural gas from Spire Marketing	$	6.5	$	26.2	$	48.8	$	62.3
Transportation services received from Spire STL Pipeline		8.0		8.0		23.9		23.9
Sales of natural gas to Spire Marketing		0.3		—		0.4		—
Spire Alabama
Purchases of natural gas from Spire Marketing	$	1.7	$	3.2	$	2.8	$	3.2

RESTRICTED CASH AND OTHER INVESTMENTS – In Spire’s statement of cash flows for the period ended June 30, 2023, total Cash, Cash Equivalents, and Restricted Cash included $19.7, $14.0 and $14.1 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of June 30, 2023,  September 30, 2022, and June 30, 2022, respectively (in addition to amounts shown as “Cash and cash equivalents”). This restricted cash has been segregated and invested in debt securities in a trust account based on collateral requirements for reinsurance at Spire’s risk management company.

BUSINESS COMBINATIONS – A subsidiary of Spire in the Midstream segment acquired a natural gas storage facility in northern Oklahoma, now named Spire Storage Salt Plains LLC, on April 1, 2023. The $37 purchase price has been fully allocated to the assets acquired and liabilities assumed based on their fair value at the acquisition date, consisting almost entirely of base gas and other property, plant and equipment, resulting in no goodwill. Accounting for this business combination is essentially complete, but the preliminary purchase price allocation remains subject to customary adjustments as provided in the purchase agreement.

ACCRUED CAPITAL EXPENDITURES – Accrued capital expenditures, shown in the following table, are excluded from capital expenditures in the statements of cash flows until paid.

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire	$	62.2	$	77.8	$	52.6
Spire Missouri		33.4		45.6		39.2
Spire Alabama		4.5		19.2		7.7

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES – Trade accounts receivable are recorded at the amounts due from customers, including unbilled amounts. Accounts receivable are written off when they are deemed to be uncollectible. An allowance for expected credit losses is estimated and updated based on relevant data and trends such as accounts receivable aging, historical write-off experience, current write-off trends, economic conditions, and the impact of weather and availability of customer payment assistance on collection trends. For the Utilities, net write-offs as a percentage of revenue has historically been the best predictor of base net write-off experience over time. Management judgment is applied in the development of the allowance due to the complexity of variables and subjective nature of certain relevant factors. The accounts receivable of Spire’s non-utility businesses are evaluated separately from those of the Utilities. The allowance for credit losses for those other businesses is based on a continuous evaluation of the individual counterparty risk and is not significant for the periods presented. Activity in the allowance for credit losses is shown in the following table.

	Spire						Spire Missouri						Spire Alabama
Three Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	40.6		$	35.1		$	34.5		$	27.0		$	5.3		$	7.1
Provision for expected credit losses		1.2			1.9			0.3			1.8			0.8			—
Write-offs, net of recoveries		(7.1	)		(4.4	)		(6.1	)		(3.7	)		(0.8	)		(0.5	)
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

Nine Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	31.9		$	30.3		$	24.9		$	22.6		$	6.3		$	6.6
Provision for expected credit losses		13.5			8.6			11.4			8.6			1.5			—
Write-offs, net of recoveries		(10.7	)		(6.3	)		(7.6	)		(6.1	)		(2.5	)		—
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

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Note 2 - Revenue

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

2. REVENUE

The following tables show revenue disaggregated by source and customer type.

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Gas Utility:
Residential	$	238.1		$	239.5		$	1,486.3		$	1,268.8
Commercial and industrial		102.2			86.2			533.1			275.6
Transportation		29.0			26.9			93.2			91.6
Off-system and other incentive		8.2			10.1			21.9			26.9
Other customer revenue		5.1			5.6			13.8			15.7
Total revenue from contracts with customers		382.6			368.3			2,148.3			1,678.6
Changes in accrued revenue under alternative revenue programs		5.2			9.1			27.0			19.7
Total Gas Utility operating revenues		387.8			377.4			2,175.3			1,698.3
Gas Marketing		23.1			64.1			157.8			171.4
Midstream		17.4			14.6			49.1			41.3
Other		4.3			4.1			12.4			12.1
Total before eliminations		432.6			460.2			2,394.6			1,923.1
Intersegment eliminations (see Note 10, Information by Operating Segment)		(14.1	)		(12.2	)		(38.7	)		(38.8	)
Total Operating Revenues	$	418.5		$	448.0		$	2,355.9		$	1,884.3

Spire Missouri
Residential	$	171.7	$	171.1		$	1,142.3	$	947.3
Commercial and industrial		61.1		51.9			369.2		140.0
Transportation		7.1		7.1			26.1		26.4
Off-system and other incentive		6.0		4.5			15.6		20.3
Other customer revenue		3.8		3.2			10.1		9.1
Total revenue from contracts with customers		249.7		237.8			1,563.3		1,143.1
Changes in accrued revenue under alternative revenue programs		4.1		(1.1	)		22.7		12.7
Total Operating Revenues	$	253.8	$	236.7		$	1,586.0	$	1,155.8

Spire Alabama
Residential	$	56.7	$	56.2	$	288.1		$	266.2
Commercial and industrial		32.7		24.0		127.8			101.6
Transportation	18.9		17.4		59.0				57.5
Off-system and other incentive		2.2		5.6		6.3			6.6
Other customer revenue		0.8		1.5		2.7			4.2
Total revenue from contracts with customers		111.3		104.7		483.9			436.1
Changes in accrued revenue under alternative revenue programs		1.8		11.0		(0.1	)		10.3
Total Operating Revenues	$	113.1	$	115.7	$	483.8		$	446.4

Gross receipts taxes associated with the Company’s natural gas utility services are imposed on the Company, Spire Missouri, and Spire Alabama and billed to its customers. The expense amounts (shown in the table below) are reported gross in the “Taxes, other than income taxes” line in the statements of income, and corresponding revenues are reported in “Operating Revenues.”

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	26.0	$	23.3	$	116.6	$	97.1
Spire Missouri		18.9		16.7		86.6		70.6
Spire Alabama		6.1		5.5		25.5		22.5

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Note 3 - Earnings Per Common Share

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Earnings Per Share [Text Block]

3. EARNINGS PER COMMON SHARE

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023		2022
Basic Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Basic (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.52	$	4.17
Diluted Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Dilutive Effect of forward sales of common stock, restricted stock and restricted stock units (in millions)*		—			—			0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.5			52.2			52.6		52.0
Diluted (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.51	$	4.16
* Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future		2.7			0.2			2.5		0.2

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Note 4 - Shareholders' Equity

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Equity [Text Block]

4. SHAREHOLDERS’ EQUITY

ATM Program

On February 6, 2019, Spire entered into an “at-the-market” (ATM) equity distribution agreement, supplemented as of May 14, 2019, pursuant to which the Company may offer and sell, from time to time, shares of its common stock (including shares of common stock that may be sold pursuant to forward sale agreements entered into in connection with the ATM equity distribution agreement). On April 28, 2022, Spire's board approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 through May 2025.

Settled sales under this ATM program are included in “Common stock issued” in the Condensed Consolidated Statements of Shareholders’ Equity. Also, in the second and third quarters of fiscal 2023, Spire executed forward sale agreements for 228,690 shares and 2,087,231 shares, respectively, of its common stock. The third quarter forward sales included a block sale of 1,744,549 shares which must be settled on or before December 28, 2023. All the other forward sales must be settled by the end of  September 2023. As of July 31, 2023, no shares of common stock have been settled under the forward sale agreements. Had all shares under the forward agreements been settled as of June 30, 2023, it would have generated net proceeds of $149.7.

As of June 30, 2023, under the ATM program, Spire may sell additional shares with an aggregate offering price of up to $17.9.

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Note 5 - Regulatory Matters

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Public Utilities Disclosure [Text Block]

5. REGULATORY MATTERS

As explained in Note 1, Summary of Significant Accounting Policies, the Utilities account for regulated operations in accordance with FASB ASC Topic 980, Regulated Operations. The following regulatory assets and regulatory liabilities were reflected in the balance sheets of the Company, Spire Missouri and Spire Alabama as of June 30, 2023, September 30, 2022, and June 30, 2022.

	June 30,		September 30,		June 30,
Spire	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	66.2	$	322.2	$	123.4
Other		27.1		33.2		28.6
Total Current Regulatory Assets		93.3		355.4		152.0
Noncurrent:
Pension and postretirement benefit costs		268.8		294.5		317.5
Cost of removal		597.9		493.7		471.9
Future income taxes due from customers		140.1		137.8		140.4
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Other		152.3		129.2		124.3
Total Noncurrent Regulatory Assets		1,421.2		1,112.4		1,205.6
Total Regulatory Assets	$	1,514.5	$	1,467.8	$	1,357.6
Regulatory Liabilities:
Current:
Other	$	5.5	$	3.7	$	3.2
Total Current Regulatory Liabilities		5.5		3.7		3.2
Noncurrent:
Deferred taxes due to customers		131.8		145.3		148.7
Pension and postretirement benefit costs		165.3		172.6		185.0
Accrued cost of removal		107.7		32.9		40.7
Unamortized purchased gas adjustments		—		53.0		—
Other		23.3		14.4		14.6
Total Noncurrent Regulatory Liabilities		428.1		418.2		389.0
Total Regulatory Liabilities	$	433.6	$	421.9	$	392.2

	June 30,		September 30,		June 30,
Spire Missouri	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	32.9	$	275.1	$	89.7
Other		2.1		13.0		0.2
Total Current Regulatory Assets		35.0		288.1		89.9
Noncurrent:
Future income taxes due from customers		131.8		129.2		131.8
Pension and postretirement benefit costs		193.4		222.9		238.5
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Cost of removal		95.3		25.2		34.9
Other		136.5		113.1		107.9
Total Noncurrent Regulatory Assets		819.1		547.6		664.6
Total Regulatory Assets	$	854.1	$	835.7	$	754.5
Regulatory Liabilities:
Noncurrent:
Deferred taxes due to customers	$	118.1	$	127.9	$	131.3
Pension and postretirement benefit costs		137.9		143.6		154.5
Accrued cost of removal		72.3		—		7.3
Unamortized purchased gas adjustments		—		53.0		—
Other		17.8		7.3		7.7
Total Noncurrent Regulatory Liabilities		346.1		331.8		300.8
Total Regulatory Liabilities	$	346.1	$	331.8	$	300.8

	June 30,		September 30,		June 30,
Spire Alabama	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	30.9	$	43.8	$	31.6
Other		13.0		13.1		21.3
Total Current Regulatory Assets		43.9		56.9		52.9
Noncurrent:
Future income taxes due from customers		2.0		2.2		2.2
Pension and postretirement benefit costs		71.1		66.5		73.8
Cost of removal		502.6		468.5		437.0
Other		1.0		1.0		1.1
Total Noncurrent Regulatory Assets		576.7		538.2		514.1
Total Regulatory Assets	$	620.6	$	595.1	$	567.0
Regulatory Liabilities:
Noncurrent:
Pension and postretirement benefit costs	$	17.3	$	19.4	$	20.4
Other		3.5		3.6		3.6
Total Noncurrent Regulatory Liabilities		20.8		23.0		24.0
Total Regulatory Liabilities	$	20.8	$	23.0	$	24.0

A portion of the Company’s and Spire Missouri’s regulatory assets are not earning a return, as shown in the table below:

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		138.0		135.6		138.2
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	606.9	$	686.3	$	622.1
Spire Missouri
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		131.8		129.2		131.8
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	600.7	$	679.9	$	615.7

Like all the Company’s regulatory assets, these regulatory assets as of June 30, 2023 are expected to be recovered from customers in future rates. The recovery period for the future income taxes due from customers and pension and other postretirement benefit costs could be 20 years or longer, based on current Internal Revenue Service guidelines and average remaining service life of active participants, respectively. The recovery period for the PGA assets is less than two years. The other items not earning a return are expected to be recovered over a period not to exceed 15 years, consistent with precedent set by the MoPSC, except for certain debt costs expected to be recovered over the related debt term, up to 35 years. Spire Alabama does not have any regulatory assets that are not earning a return.

Spire Missouri

In mid- February 2021, the central U.S. experienced a period of unusually severe cold weather (“Winter Storm Uri”), and Spire Missouri implemented an Operational Flow Order (OFO) to preserve the integrity of its distribution system. During this time, Spire Missouri was required to purchase additional natural gas supply, both to ensure adequate supply for its firm utility customers, and to cover the shortfall created when third-party marketers failed to deliver natural gas supply to its city gates on behalf of their customers. In accordance with its MoPSC-approved OFO tariff, Spire Missouri invoiced the cost of gas and associated penalties totaling $195.8 to non-compliant marketers and recorded accounts receivable. Recoveries collected are an offset to cost of natural gas for firm utility customers through the Purchased Gas Adjustment (PGA) and Actual Cost Adjustment (ACA), so are net income neutral to Spire Missouri. The three largest counterparties did not remit payment when due, so Spire Missouri filed suit against them in federal court to recover the invoiced amounts. In late February 2022, the parties to the OFO waiver suits agreed to a settlement in principle, pursuant to which marketers will reimburse Spire Missouri for the actual cost of its incremental gas purchases to serve marketers’ customers during Winter Storm Uri, so Spire Missouri reduced revenue, accounts receivable, cost of gas and regulatory liabilities by approximately $150 in the second quarter of fiscal 2022. The settlement, which reduced the total amount due from the three marketers to approximately $42, was approved by the MoPSC in late May 2022, and the marketers are making timely payments to Spire Missouri.

In the first quarter of fiscal 2022, the MoPSC approved Spire Missouri compliance tariffs with an effective date of December 23, 2021 consistent with its order in Spire Missouri's general rate case. These new tariffs were designed to increase Spire Missouri’s aggregate annual gross base rate revenues by $72.2, which includes $24.9 incremental and $47.3 already being collected through the Infrastructure System Replacement Surcharge (ISRS). The MoPSC required Spire Missouri to defer all non-operational overheads from December 23, 2021 through September 30, 2022 into a regulatory asset totaling $42.8. On April 1, 2022, Spire Missouri filed tariff sheets to initiate a new general rate case proceeding intended to address the deferred amounts, along with other matters. The parties reached a Full Unanimous Stipulation and Agreement (the “Stipulation”) to resolve all issues in the case, which was filed with the MoPSC on November 4, 2022. On November 18, 2022, the Stipulation was approved, including authorization of $78.0 in new base rate revenue (including $19.0 already being collected through ISRS) and recovery of deferred overheads through amortization of the related regulatory asset. New base rates became effective on December 26, 2022.

The ISRS allows Spire Missouri expedited recovery for its investment to replace qualifying components of its infrastructure without the necessity of a formal rate case. As noted above, all prior ISRS revenues were reset to zero as of December 26, 2022 as a result of Spire Missouri's most recent base rate case. On April 20, 2023, the MoPSC approved an incremental annual ISRS revenue increase of $7.7, effective May 6, 2023, reflecting eligible pipe replacement from October 2022 through February 2023. On June 20, 2023, Spire Missouri filed for an additional annual ISRS revenue increase of $14.2 based on actual replacements during March 2023 through May 2023 and estimates for June 2023 through August 2023. A decision on this application is required by December 17, 2023.

The Utilities purchase the natural gas to be delivered to their customers and typically defer the recovery of this expense thereby lessening the immediate impact on customers’ bills of higher realized commodity costs. These deferred gas balances are expected to be recovered over the next 12 months pursuant to tariff adjustments effective in Missouri (and Alabama). Spire Missouri filed Purchase Gas Adjustment (PGA) changes to its tariff in November and January which were approved and became effective November 29, 2022 and January 19, 2023, respectively.

On May 27, 2022, the MoPSC staff filed an ACA Review Recommendation and Report for the ACA period that first includes transportation charges incurred by Spire Missouri for service on the Spire STL Pipeline. That report concluded that the transaction complied with Missouri affiliate transaction rules and was prudent, and it recommended no disallowance of any Spire STL Pipeline related costs from the ACA mechanism. On July 11, 2022, Spire Missouri filed its response comments in support of the recommendation. The Missouri Office of the Public Counsel and Environmental Defense Fund (EDF) filed comments on July 29 and August 1, 2022, respectively, raising concerns about the Spire STL Pipeline transaction, the ACA process itself, and other matters. On January 6, 2023, Spire Missouri filed a Partial Stipulation and Agreement resolving all other issues raised by the MoPSC staff in its Recommendation and Report. The partial stipulation was approved by the MoPSC on January 25, 2023, resulting in a $0.6 credit to the ACA balance, but issues relating to Spire STL Pipeline costs remained contested. On April 28, 2023, MoPSC Staff and its consultant filed direct testimony confirming their position that the transaction was prudent and in compliance with Missouri affiliate transaction rules. EDF also filed direct testimony arguing Spire Missouri imprudently changed the physical manner in which it receives supply and created risk for customers, and advocating for a disallowance of $27.7 in the case. No other parties filed direct testimony. MoPSC staff, Spire Missouri, and EDF have filed rebuttal and sur-rebuttal testimony. An evidentiary hearing on this matter was scheduled to be held  July 25-26, 2023; however, on July 21, 2023, MoPSC suspended the procedural schedule in recognition that the parties had reached an agreement in principle to resolve the matter via settlement stipulation. The settlement stipulation is anticipated to be filed in early August and will require approval by the MoPSC. We anticipate the stipulation to include non-monetary items and an increase in customer assistance program funding.

The MoPSC has initiated their annual ACA dockets (GR-2022-0135 and GR-2022-0136) to audit gas commodity and transportation costs for the 2020-2021 heating season, which includes the impact of Winter Storm Uri on Spire Missouri's natural gas portfolio. On December 15, 2022, the MoPSC staff filed its Reports and Recommendations in these cases proposing various disallowances relating to imbalance cash-outs and an off-system sale. On July 12, 2023, the MoPSC entered a scheduling order in this matter which includes several rounds of pre-filed testimony prior to an evidentiary hearing to be held in early May 2024.

Spire Alabama

On October 26, 2022, Spire Alabama made its annual Rate Stabilization and Equalization (RSE) rate filing with the APSC, presenting the utility’s budget for the fiscal year ending September 30, 2023, including net income and a calculation of allowed return on average common equity (ROE). The budget reflected the start of amortization of the accumulated deferred income tax (ADIT) adjustment related to the Tax Cuts and Jobs Act of 2017 (TCJA). New rates designed to provide an annual revenue increase of $15.0 became effective January 1, 2023.

Spire Alabama filed GSA rate increases effective December 1, 2022, and January 1, 2023, primarily attributable to higher natural gas prices.

Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is affected by the following regulatory matters.

In October 2022, Spire Gulf made its annual RSE rate filing with the APSC based on its budget for fiscal 2023 and an allowed ROE of 9.95%. The budget reflected the start of amortization of the excess ADIT from the TCJA. New rates designed to provide an annual revenue increase of $2.5 became effective January 1, 2023. Spire Gulf filed its RSE point of test as of April 30, 2023 with the APSC reflecting that its projected ROE exceeded the allowed ROE resulting in an annual refund of $1.8 that became effective July 1, 2023.

On September 14, 2022, Spire Mississippi filed its Rate Stabilization Adjustment Rider with the Mississippi Public Service Commission (MSPSC) for the rate year ended June 30, 2022, which reflected an increase to annual revenues of $1.3. The MSPSC, by its order dated December 6, 2022, approved a stipulation agreement between the Mississippi Public Utility Staff and Spire Mississippi that provides for an annual revenue increase of $0.8 through rates that became effective on January 1, 2023.

In August 2018, the FERC approved an order issuing Certificates of Public Convenience and Necessity (“FERC Certificates”) for the Spire STL Pipeline ( “August 2018 Order”). In November 2019, the FERC issued an Order on Rehearing of the August 2018 Order dismissing or denying the outstanding requests for rehearing filed by several parties, dismissing the request for stay filed by one party, and noting the withdrawal of the request for rehearing by another party. In January 2020, two of the rehearing parties filed petitions for review of the FERC’s orders with the U.S. Court of Appeals for the District of Columbia Circuit (“DC Circuit”). On June 22, 2021, the DC Circuit issued an order vacating the FERC Certificates and remanding the matter back to the FERC for further action. On September 14, 2021 and December 3, 2021, the FERC issued temporary certificates for the continued authorized operation of the Spire STL Pipeline pending the outcome of its determination on remand. On December 15, 2022, the FERC issued its order on remand reissuing permanent FERC Certificates for the continued operation of Spire STL Pipeline. On January 17, 2023, EDF requested rehearing of the December 15, 2022 FERC order, but on February 17, 2023, that rehearing request was denied by operation of law. On April 20, 2023, the FERC issued an “Order Addressing Arguments Raised on Rehearing” in which it further clarified the rationale for denying EDF's rehearing request. No party filed a timely appeal of this denial in any federal appellate court. Accordingly, the FERC order reissuing permanent certificates for the Spire STL Pipeline is now final and unappealable.

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Note 6 - Financing

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Debt Disclosure [Text Block]

6. FINANCING

Short-term

Spire, Spire Missouri and Spire Alabama have a syndicated revolving credit facility pursuant to a loan agreement with 12 banks, which was amended July 22, 2022, to increase the commitment and sublimits and extend the agreement through July 22, 2027. The amended loan agreement has an aggregate credit commitment of $1,300.0, including sublimits of $450.0 for the Spire holding company, $575.0 for Spire Missouri and $275.0 for Spire Alabama. These sublimits may be reallocated from time to time among the three borrowers within the $1,300.0 aggregate commitment, with commitment fees and interest margins applied for each borrower relative to its credit rating, as well as sustainability rate adjustments based on Spire's DART (“Days Away Restricted or Transferred”) rate and methane emissions reductions. The Spire holding company may use its line to provide for the funding needs of various subsidiaries. The agreement also contains financial covenants limiting each borrower's consolidated total debt, including short-term debt, to no more than 70% of its total capitalization. As defined in the line of credit, on June 30, 2023, total debt was less than 65% of total capitalization for each borrower. There were no borrowings against this credit facility as of June 30, 2023.

Spire utilizes a commercial paper program (“CP Program”) pursuant to which Spire may issue short-term, unsecured commercial paper notes. Amounts available under the CP Program may be borrowed, repaid and re-borrowed from time to time, with the aggregate face or principal amount of the notes outstanding under the CP Program at any time not to exceed $1,300.0. The notes may have maturities of up to 365 days from date of issue.

On January 5, 2023, Spire Missouri entered into a loan agreement with several banks for a $250.0 unsecured term loan due October 5, 2023. Interest was based on the secured overnight financing rate (“SOFR”) plus an adjustment of 0.10% per annum plus a margin of 0.80% per annum. The loan was repaid on May 8, 2023.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of June 30, 2023, $375.2 of Spire’s CP Program borrowings was used to support lending to the Utilities.

	Spire (Parent Only)			Spire Missouri						Spire Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Nine Months Ended June 30, 2023
Highest borrowings outstanding	$	1,282.0		$	250.0		$	656.9		$	274.0		$	1,482.0
Lowest borrowings outstanding		354.4			—			3.8			76.7			489.0
Weighted average borrowings		778.7			89.4			308.9			123.3			868.1
Weighted average interest rate		4.7	%		5.5	%		4.6	%		4.8	%		4.8	%
As of June 30, 2023
Borrowings outstanding	$	557.6		$	—		$	228.1		$	108.1		$	557.6
Weighted average interest rate		5.5	%		—	%		5.5	%		5.5	%		5.5	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		n/a			3.3	%		3.3	%		3.3	%
As of June 30, 2022
Borrowings outstanding	$	709.2		$	—		$	285.4		$	196.3		$	709.2
Weighted average interest rate		2.0	%		n/a			2.0	%		2.0	%		2.0	%

Long-term

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of June 30, 2023, there were no events of default under these financial covenants.

Interest expense shown on the statements of income is net of the capitalized interest amounts shown in the following table.

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	2.3	$	1.1	$	5.8	$	3.2
Spire Missouri		1.0		0.2		2.1		0.3
Spire Alabama		0.5		0.9		1.8		2.5

On  October 13, 2022, Spire Alabama issued $90.0 of notes due  October 15, 2029, bearing interest at 5.32% and $85.0 of notes due  October 15, 2032, bearing interest at 5.41%. Interest is payable semi-annually. The notes are senior unsecured obligations and rank equal in right to payment with all other senior unsecured indebtedness of Spire Alabama. Also on  October 13, 2022, Spire Gulf issued $30.0 of first mortgage bonds due  October 15, 2037, bearing interest at 5.61% payable semi-annually. The bonds rank equal in right to payment with the other first mortgage bonds issued by Spire Gulf. The bonds were issued under a supplemental indenture with collateral fall away provisions whereby, under certain conditions, Spire Gulf  may elect to exchange the bonds, which are secured, for unsecured notes.

On February 13, 2023, Spire Missouri issued $400.0 aggregate principal amount of its 4.800% Series First Mortgage Bonds due 2033. Interest is payable semi-annually. The notes are senior secured indebtedness of Spire Missouri and rank equally with all other existing and future senior secured indebtedness issued by Spire Missouri under its mortgage and deed of trust. The bonds are secured by a first mortgage lien on substantially all of the real properties of Spire Missouri, subject to limited exceptions.

On March 7, 2023, Spire issued $150.0 aggregate principal amount of its 5.80% Series 2023 Senior Notes due March 15, 2033. Interest is payable semi-annually. The notes are senior unsecured obligations of the Company.

In the quarter ended March 31, 2023, the company settled interest rate swap contracts with a notional amount of $325.0 and a realized gain of $39.5. This gain is being amortized against the interest expense related to the 10-year debt issued during that quarter (described in the previous two paragraphs).

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Note 7 - Fair Value of Financial Instruments

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Fair Value Disclosures [Text Block]

7. FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying amounts of cash and cash equivalents, notes receivable, and short-term debt approximate fair value due to the short maturity of these instruments. The fair values of long-term debt are estimated based on market prices for similar issues. Refer to Note 8, Fair Value Measurements, for information on financial instruments measured at fair value on a recurring basis.

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis are shown in the following tables, classified according to the fair value hierarchy. There were no such instruments classified as Level 3 (significant unobservable inputs) as of June 30, 2023, September 30, 2022, and June 30, 2022.

					Classification of Estimated Fair Value
	Carrying Amount		Fair Value		Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)
Spire
As of June 30, 2023
Cash and cash equivalents	$	5.3	$	5.3	$	5.3	$	—
Notes payable		557.6		557.6		—		557.6
Long-term debt, including current portion		3,959.9		3,650.7		—		3,650.7
As of September 30, 2022
Cash and cash equivalents	$	6.5	$	6.5	$	6.5	$	—
Notes payable		1,037.5		1,037.5		—		1,037.5
Long-term debt, including current portion		3,239.7		2,851.8		—		2,851.8
As of June 30, 2022
Cash and cash equivalents	$	16.0	$	16.0	$	16.0	$	—
Notes payable		709.2		709.2		—		709.2
Long-term debt, including current portion		3,239.1		3,032.1		—		3,032.1
Spire Missouri
As of June 30, 2023
Notes payable – associated companies	$	228.1	$	228.1	$	—	$	228.1
Long-term debt, including current portion		2,035.1		1,890.2		—		1,890.2
As of September 30, 2022
Notes payable – associated companies	$	445.3	$	445.3	$	—	$	445.3
Long-term debt, including current portion		1,637.7		1,473.9		—		1,473.9
As of June 30, 2022
Cash and cash equivalents	$	7.0	$	7.0	$	7.0	$	—
Notes payable – associated companies		285.4		285.4		—		285.4
Long-term debt		1,637.4		1,562.4		—		1,562.4
Spire Alabama
As of June 30, 2023
Cash and cash equivalents	$	0.5	$	0.5	$	0.5	$	—
Notes payable – associated companies		108.1		108.1		—		108.1
Long-term debt		745.8		681.5		—		681.5
As of September 30, 2022
Cash and cash equivalents	$	2.4	$	2.4	$	2.4	$	—
Notes payable – associated companies		260.9		260.9		—		260.9
Long-term debt		571.5		485.0		—		485.0
As of June 30, 2022
Cash and cash equivalents	$	3.7	$	3.7	$	3.7	$	—
Notes payable – associated companies		196.3		196.3		—		196.3
Long-term debt		571.4		527.2		—		527.2

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Note 8 - Fair Value Measurements

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]

8. FAIR VALUE MEASUREMENTS

The information presented in the following tables categorizes the assets and liabilities in the balance sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.

The mutual funds included in Level 1 are valued based on exchange-quoted market prices of individual securities.

Derivative instruments included in Level 1 are valued using quoted market prices on the New York Mercantile Exchange (NYMEX) or the Intercontinental Exchange (ICE), and also certain natural gas commodity contracts. Derivative instruments classified in Level 2 include derivatives that are valued using broker or dealer quotation services or published benchmarks whose prices are derived principally from, or are corroborated by, observable market inputs. Also included in Level 2 are certain derivative instruments that have values that are similar to, and correlate with, quoted prices for exchange-traded instruments or in active markets. Derivative instruments included in Level 3 are valued using generally unobservable inputs that are based upon the best information available and reflect management’s assumptions about how market participants would price the asset or liability. There were no Level 3 balances as of June 30, 2023, September 30, 2022, and June 30, 2022. The Company’s and the Utilities’ policy is to recognize transfers between the levels of the fair value hierarchy, if any, as of the beginning of the interim reporting period in which circumstances change or events occur to cause the transfer.

The mutual funds are included in “Other Investments” on the Company’s balance sheets and in “Other Property and Investments” on Spire Missouri’s balance sheets. Changes in their recurring valuations are recorded as unrealized gains or losses in the corresponding income statement. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net in the balance sheets when a legally enforceable netting agreement exists between the Company, Spire Missouri, or Spire Alabama and the counterparty to a derivative contract.

Spire

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
Gas Marketing:
NYMEX/ICE natural gas contracts		10.5		—		(10.5	)		—
Natural gas commodity contracts		35.8		—		(1.0	)		34.8
Other:
U.S. stock/bond mutual funds		31.4		—		—			31.4
Interest rate swaps		—		22.8		—			22.8
Total	$	99.1	$	22.8	$	(11.5	)	$	110.4
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		24.3		—		(24.3	)		—
Natural gas commodity contracts		34.9		—		(1.0	)		33.9
Other:
Interest rate swaps		—		0.8		—			0.8
Total	$	104.7	$	0.8	$	(70.8	)	$	34.7

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of September 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		91.8		—		(91.8	)		—
Natural gas commodity contracts		56.6		—		(4.0	)		52.6
Other:
U.S. stock/bond mutual funds		29.3		—		—			29.3
Interest rate swaps		—		63.6		—			63.6
Total	$	254.6	$	63.6	$	(153.6	)	$	164.6
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		82.3		—		(82.3	)		—
Natural gas commodity contracts		65.5		—		(4.0	)		61.5
Total	$	178.5	$	—	$	(117.0	)	$	61.5
As of June 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		94.2		—		(94.2	)		—
Natural gas commodity contracts		57.6		—		(5.3	)		52.3
Other:
U.S. stock/bond mutual funds		31.6		—		—			31.6
Interest rate swaps		—		52.7		(7.6	)		45.1
Total	$	243.3	$	52.7	$	(146.7	)	$	149.3
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		60.8		—		(60.8	)		—
Natural gas commodity contracts		118.3		—		(5.3	)		113.0
Other:
Interest rate swaps		—		7.6		(7.6	)		—
Total	$	191.9	$	7.6	$	(86.5	)	$	113.0

Spire Missouri

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
LIABILITIES
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Total	$	45.5	$	—	$	(45.5	)	$	—
As of September 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Total	$	76.9	$	—	$	(57.8	)	$	19.1
LIABILITIES
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
As of June 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Total	$	59.9	$	—	$	(39.6	)	$	20.3
LIABILITIES
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—

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Note 9 - Pension Plans and Other Postretirement Benefits

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Retirement Benefits [Text Block]

9. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

Spire and the Utilities maintain pension plans for their employees.

Spire Missouri and Spire Alabama have non-contributory, defined benefit, trusteed forms of pension plans covering the majority of their employees. Qualified plan assets are comprised of mutual and commingled funds consisting of U.S. equities with varying strategies, global equities, alternative investments, and fixed income investments.

The net periodic pension cost includes components shown in the following tables. The components other than the service costs and regulatory adjustment are presented in “Other Income, Net” in the income statement, except for Spire Alabama’s losses on lump-sum settlements. Such losses are capitalized in regulatory balances and amortized over the remaining actuarial life of individuals in the plan, and that amortization is presented in “Other Income, Net.”

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	4.2		$	4.8		$	12.2		$	15.6
Interest cost on projected benefit obligation		6.6			5.4			18.9			15.8
Expected return on plan assets		(6.4	)		(7.7	)		(18.5	)		(24.1	)
Amortization of prior service credit		(1.1	)		(1.1	)		(3.4	)		(3.4	)
Amortization of actuarial loss		1.5			2.5			4.7			9.8
Loss on lump-sum settlements		—			17.8			8.6			29.5
Subtotal		4.8			21.7			22.5			43.2
Regulatory adjustment		6.1			(6.9	)		18.3			2.5
Net pension cost	$	10.9		$	14.8		$	40.8		$	45.7
Spire Missouri
Service cost – benefits earned during the period	$	2.8		$	3.5		$	8.5		$	11.2
Interest cost on projected benefit obligation		4.5			3.8			13.4			10.9
Expected return on plan assets		(4.5	)		(5.7	)		(13.5	)		(17.6	)
Amortization of prior service credit		(0.5	)		(0.5	)		(1.5	)		(1.5	)
Amortization of actuarial loss		1.5			2.0			4.6			7.6
Loss on lump-sum settlements		—			17.3			—			24.1
Subtotal		3.8			20.4			11.5			34.7
Regulatory adjustment		3.4			(8.3	)		19.6			1.3
Net pension cost	$	7.2		$	12.1		$	31.1		$	36.0
Spire Alabama
Service cost – benefits earned during the period	$	1.3		$	1.1		$	3.2		$	3.8
Interest cost on projected benefit obligation		1.5			1.1			3.6			3.4
Expected return on plan assets		(1.1	)		(1.2	)		(2.7	)		(4.0	)
Amortization of prior service credit		(0.6	)		(0.6	)		(1.8	)		(1.8	)
Amortization of actuarial loss		0.1			0.5			0.4			2.2
Loss on lump-sum settlements		—			0.5			8.6			5.4
Subtotal		1.2			1.4			11.3			9.0
Regulatory adjustment		2.4			1.1			(2.0	)		0.5
Net pension cost	$	3.6		$	2.5		$	9.3		$	9.5

Pursuant to the provisions of Spire Missouri’s and Spire Alabama’s pension plans, pension obligations may be satisfied by monthly annuities, lump-sum cash payments, or special termination benefits. Lump-sum payments are recognized as settlements (which can result in gains or losses) only if the total of such payments exceeds the sum of service and interest costs in a specific year. Special termination benefits, when offered, are also recognized as settlements which can result in gains or losses. For the three and nine months ended June 30, 2023, two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $27.5 for the Spire Alabama plans. The lump-sum settlement resulted in a loss of $8.6 for Spire Alabama. For the remeasurement, the discount rate for both of the Spire Alabama plans was updated to 5.6%, from 5.7% for one plan and 5.65% for the other plan, at September 30, 2022. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 13.4 years for one plan and 12.4 years for the other plan. Therefore, no lump sum settlement expense was recorded in the nine months ended June 30, 2023.

For the three months ended June 30, 2022, one Spire Missouri plan and two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $47.4 for the Spire Missouri plan and $3.6 for the Spire Alabama plans. The lump-sum settlement resulted in losses of $17.3 and $0.5 for Spire Missouri and Spire Alabama, respectively. For the remeasurement, the discount rate for the Spire Missouri plan was updated to 4.55% from 3.6% at February 28, 2022, and the discount rates for the Spire Alabama plans were also updated to 4.55% from 3.6% at February 28, 2022. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 13.0 years for the one plan and 11.1 years for the second plan. Therefore, no lump sum settlement expense was recorded in the period ended June 30, 2022.

For the three months ended March 31, 2022, one Spire Missouri plan and two Spire Alabama plans met the criteria for settlement recognition. The lump-sum payments recognized as settlements for the remeasurement were $21.6 for the Spire Missouri plan and $17.4 for the Spire Alabama plans. The lump-sum settlement resulted in losses of $6.8 and $4.9 for Spire Missouri and Spire Alabama, respectively. For the remeasurement, the discount rate for the Spire Missouri plan was updated to 3.6% from 3.0% at September 30, 2021, and the discount rates for the Spire Alabama plans were updated to 3.6% from 3.0% for the first plan and 3.1% for the second plan at September 30, 2021. The Spire Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan — in this case, 12.3 years for the one plan and 12.6 years for the second plan. Therefore, no lump sum settlement expenses were recorded in the period ended  March 31, 2022.

Effective December 23, 2021, the pension cost for Spire Missouri’s western territory (Missouri West) included in customer rates was reduced from $5.5 to $4.4 per year, the pension cost included in Spire Missouri’s eastern territory (Missouri East) customer rates was increased from $29.0 to $32.4 per year. Subsequently, on December 26, 2022, the amount in Missouri East was lowered to $29.9. The difference between these amounts and pension expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability.

Also effective December 23, 2021, Missouri East prepaid pension assets and other postretirement benefits that were previously being included in rates at $21.6 per year for eight years were reduced to $11.0 per year, with the amortization period being reset for another eight years. Missouri West net liability for pension and other postretirement benefits that were previously reducing rates by $3.3 per year for eight years were reduced to a $1.1 reduction in rates per year, with the amortization period being reset for another eight years. Subsequently, on December 26, 2022, Missouri East amortization was lowered to $6.9 and Missouri West to a reduction of $0.8.

The funding policy of the Utilities is to contribute an amount not less than the minimum required by government funding standards, nor more than the maximum deductible amount for federal income tax purposes. Fiscal 2023 contributions to Spire Missouri’s pension plans through June 30, 2023 were $29.7 to the qualified trusts and none to non-qualified plans. Fiscal 2023 contributions to the Spire Alabama pension plans through June 30, 2023 were $2.8. No additional contributions to the qualified trusts of Spire Missouri’s pension plans are anticipated for the remainder of fiscal 2023. Contributions to Spire Alabama’s pension plans for the remainder of fiscal 2023 are anticipated to be $25.0.

Other Postretirement Benefits

Spire and the Utilities provide certain life insurance benefits at retirement. Spire Missouri plans provide for medical insurance after early retirement until age 65. For retirements prior to January 1, 2015, certain Spire Missouri plans provided medical insurance after retirement until death. The Spire Alabama plans provide medical insurance upon retirement until death for certain retirees depending on the type of employee and the date the employee was originally hired.

The net periodic postretirement benefit cost includes components shown in the following tables. The components other than the service costs and regulatory adjustment are presented in “Other Income, Net” in the income statement, except in the event Spire Alabama incurs losses on lump-sum settlements. Any such losses are capitalized in regulatory balances and amortized over the remaining actuarial life of individuals in the plan, and that amortization is presented in “Other Income, Net.”

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	1.2		$	1.9		$	3.6		$	5.8
Interest cost on accumulated postretirement benefit obligation		2.0			1.6			6.3			4.6
Expected return on plan assets		(4.0	)		(4.3	)		(11.8	)		(12.8	)
Amortization of prior service cost		0.1			0.3			0.2			0.8
Amortization of actuarial gain		(0.9	)		(0.5	)		(3.0	)		(1.7	)
Subtotal		(1.6	)		(1.0	)		(4.7	)		(3.3	)
Regulatory adjustment		(0.5	)		(0.1	)		(0.2	)		3.2
Net postretirement benefit income	$	(2.1	)	$	(1.1	)	$	(4.9	)	$	(0.1	)
Spire Missouri
Service cost – benefits earned during the period	$	1.0		$	1.6		$	3.0		$	4.8
Interest cost on accumulated postretirement benefit obligation		1.6			1.2			4.9			3.4
Expected return on plan assets		(2.6	)		(2.9	)		(7.9	)		(8.6	)
Amortization of prior service cost		0.1			0.2			0.4			0.6
Amortization of actuarial gain		(0.8	)		(0.5	)		(2.4	)		(1.5	)
Subtotal		(0.7	)		(0.4	)		(2.0	)		(1.3	)
Regulatory adjustment		(0.2	)		0.4			1.1			4.5
Net postretirement benefit cost	$	(0.9	)	$	—		$	(0.9	)	$	3.2
Spire Alabama
Service cost – benefits earned during the period	$	0.2		$	0.3		$	0.5		$	0.9
Interest cost on accumulated postretirement benefit obligation		0.4			0.4			1.3			1.1
Expected return on plan assets		(1.3	)		(1.3	)		(3.8	)		(3.9	)
Amortization of prior service (credit) cost		—			0.1			(0.2	)		0.2
Amortization of actuarial gain		(0.1	)		—			(0.4	)		—
Subtotal		(0.8	)		(0.5	)		(2.6	)		(1.7	)
Regulatory adjustment		(0.5	)		(0.5	)		(1.4	)		(1.4	)
Net postretirement benefit income	$	(1.3	)	$	(1.0	)	$	(4.0	)	$	(3.1	)

Missouri and Alabama state laws provide for the recovery in rates of costs accrued pursuant to GAAP provided that such costs are funded through an independent, external funding mechanism. The Utilities have established Voluntary Employees’ Beneficiary Association (VEBA) and Rabbi Trusts as external funding mechanisms. The assets of the VEBA and Rabbi Trusts consist primarily of money market securities and mutual funds invested in stocks and bonds.

Effective December 23, 2021, the $8.6 allowance for recovery in rates for Spire Missouri’s postretirement benefit plans was discontinued. The difference between no recovery in rates and pension expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability. Effective with the resolution of the 2022 Missouri rate case in December 2022, net liabilities for postretirement benefits will reduce rates $0.9 and $0.1 per year for Missouri East and Missouri West, respectively.

The Utilities’ funding policy is to contribute amounts to the trusts equal to the periodic benefit cost calculated pursuant to GAAP as recovered in rates. There have been no contributions to the postretirement plans through June 30, 2023 for Spire Missouri or Spire Alabama, and none are expected to be required for the remainder of the fiscal year.

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Note 10 - Information by Operating Segment

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

10. INFORMATION BY OPERATING SEGMENT

The Company has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment is the aggregation of the operations of the Utilities. The Gas Marketing segment includes the results of Spire Marketing, a subsidiary engaged in the non-regulated marketing of natural gas and related activities, including utilizing natural gas storage contracts for providing natural gas sales. The Midstream segment includes Spire STL Pipeline, a subsidiary of Spire providing interstate natural gas pipeline transportation services, and Spire Storage, subsidiaries of Spire providing interstate and intrastate natural gas storage services. Other components of the Company’s consolidated information include Spire's subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

Accounting policies are described in Note 1, Summary of Significant Accounting Policies. Intersegment transactions include sales of natural gas from Spire Marketing to Spire Missouri, Spire Alabama and Spire Storage, sales of natural gas from Spire Missouri to Spire Marketing, storage services from Spire Storage to Spire Marketing, and natural gas transportation services provided by Spire STL Pipeline to Spire Missouri and Spire Marketing. 

Management evaluates the performance of the operating segments based on the computation of net economic earnings. Net economic earnings exclude from reported net income the after-tax impacts of fair value accounting and timing adjustments associated with energy-related transactions, the impacts of acquisition, divestiture and restructuring activities, and the largely non-cash impacts of impairments and other non-recurring or unusual items such as certain regulatory, legislative, or GAAP standard-setting actions.

	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	387.5		$	23.1		$	7.7	$	0.2		$	—		$	418.5
Intersegment revenues		0.3			—			9.7		4.1			(14.1	)		—
Total Operating Revenues		387.8			23.1			17.4		4.3			(14.1	)		418.5
Operating Expenses:
Natural gas		154.6			25.3			—		—			(10.1	)		169.8
Operation and maintenance		111.7			4.2			8.1		5.5			(4.0	)		125.5
Depreciation and amortization		61.7			0.3			2.1		0.2			—			64.3
Taxes, other than income taxes		45.9			0.4			0.7		(0.1	)		—			46.9
Total Operating Expenses		373.9			30.2			10.9		5.6			(14.1	)		406.5
Operating Income (Loss)	$	13.9		$	(7.1	)	$	6.5	$	(1.3	)	$	—		$	12.0
Net Economic (Loss) Earnings	$	(12.3	)	$	(2.5	)	$	3.6	$	(7.4	)	$	—		$	(18.6	)

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	377.4	$	64.1		$	6.3	$	0.2		$	—		$	448.0
Intersegment revenues		—		—			8.3		3.9			(12.2	)		—
Total Operating Revenues		377.4		64.1			14.6		4.1			(12.2	)		448.0
Operating Expenses:
Natural gas		144.5		67.1			—		—			(8.3	)		203.3
Operation and maintenance		95.0		3.2			4.8		3.2			(3.9	)		102.3
Depreciation and amortization		58.1		0.3			1.8		0.2			—			60.4
Taxes, other than income taxes		43.0		0.4			0.6		0.1			—			44.1
Total Operating Expenses		340.6		71.0			7.2		3.5			(12.2	)		410.1
Operating Income (Loss)	$	36.8	$	(6.9	)	$	7.4	$	0.6		$	—		$	37.9
Net Economic Earnings (Loss)	$	4.2	$	0.4		$	4.3	$	(4.8	)	$	—		$	4.1

	Gas Utility		Gas Marketing		Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	2,174.9	$	157.8	$	22.7	$	0.5		$	—		$	2,355.9
Intersegment revenues		0.4		—		26.4		11.9			(38.7	)		—
Total Operating Revenues		2,175.3		157.8		49.1		12.4			(38.7	)		2,355.9
Operating Expenses:
Natural gas		1,099.5		102.8		—		—			(26.8	)		1,175.5
Operation and maintenance		350.9		16.2		20.1		14.4			(11.9	)		389.7
Depreciation and amortization		181.6		1.0		6.0		0.4			—			189.0
Taxes, other than income taxes		176.2		1.1		1.9		—			—			179.2
Total Operating Expenses		1,808.2		121.1		28.0		14.8			(38.7	)		1,933.4
Operating Income (Loss)	$	367.1	$	36.7	$	21.1	$	(2.4	)	$	—		$	422.5
Net Economic Earnings (Loss)	$	234.5	$	45.0	$	11.6	$	(25.4	)	$	—		$	265.7

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	1,698.3	$	171.4		$	14.1	$	0.5		$	—		$	1,884.3
Intersegment revenues		—		—			27.2		11.6			(38.8	)		—
Total Operating Revenues		1,698.3		171.4			41.3		12.1			(38.8	)		1,884.3
Operating Expenses:
Natural gas		710.7		160.9			—		—			(27.1	)		844.5
Operation and maintenance		306.5		9.1			16.4		11.6			(11.7	)		331.9
Depreciation and amortization		169.2		1.0			5.6		0.4			—			176.2
Taxes, other than income taxes		150.3		0.8			2.1		0.1			—			153.3
Total Operating Expenses		1,336.7		171.8			24.1		12.1			(38.8	)		1,505.9
Operating Income (Loss)	$	361.6	$	(0.4	)	$	17.2	$	—		$	—		$	378.4
Net Economic Earnings (Loss)	$	240.6	$	15.3		$	9.8	$	(18.0	)	$	—		$	247.7

The following table reconciles the Company’s net economic earnings (loss) to net income (loss).

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6		$	227.9
Adjustments, pre-tax:
Fair value and timing adjustments		3.4			7.3			22.2			20.9
Acquisition activities		0.5			—			0.5			—
Income tax adjustments		(0.9	)		(1.8	)		(5.6	)		(1.1	)
Net Economic (Loss) Earnings	$	(18.6	)	$	4.1		$	265.7		$	247.7

The Company’s total assets by segment were as follows:

	June 30,			September 30,			June 30,
	2023			2022			2022
Total Assets:
Gas Utility	$	8,283.2		$	8,042.8		$	7,854.7
Gas Marketing		316.6			638.7			595.5
Midstream		533.3			446.0			430.9
Other		2,134.1			2,449.2			2,222.0
Eliminations		(1,229.7	)		(1,493.0	)		(1,319.2	)
Total Assets	$	10,037.5		$	10,083.7		$	9,783.9

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Note 11 - Commitments and Contingencies

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

11. COMMITMENTS AND CONTINGENCIES

Commitments

The Company and the Utilities have entered into contracts with various counterparties, expiring on dates through calendar 2039, for the storage, transportation, and supply of natural gas. Minimum payments required under the contracts in place at June 30, 2023, are estimated at $1,780.5, $1,351.8, and $255.8 for the Company, Spire Missouri, and Spire Alabama, respectively. Additional contracts are generally entered into prior to or during the heating season of November through April. The Utilities recover their costs from customers in accordance with their PGA clauses or GSA riders.

In May 2023, Spire entered into an agreement to acquire MoGas Pipeline, an interstate natural gas pipeline, and Omega Pipeline, a connected gas distribution system, from CorEnergy Infrastructure Trust, Inc., for $175 cash, subject to customary working capital and other closing adjustments. Spire has received a request for additional information ("Second Request") from the Federal Trade Commission (FTC) with regard to this proposed acquisition. The Company intends to cooperate fully with the FTC regarding the Second Request and expects to close around the end of the calendar year subject to receiving FTC approval.

A consolidated subsidiary of Spire is a limited partner in Inter-Atlantic Energy Capital Ventures, L.P., an unconsolidated partnership focusing on sustainability initiatives largely tied to the natural gas utility sector. Spire committed to contribute a total of $10.0 of capital to the partnership as and when requested by the general partner. As of June 30, 2023, the remaining unfunded commitment was $7.2.

Contingencies

The Company and the Utilities account for contingencies, including environmental liabilities, in accordance with accounting standards under the loss contingency guidance of ASC Topic 450, Contingencies, when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated.

In addition to matters noted below, the Company and the Utilities are involved in other litigation, claims, and investigations arising in the normal course of business. Management, after discussion with counsel, believes the final outcome will not have a material effect on the statements of income, balance sheets, and statements of cash flows of the Company, Spire Missouri, or Spire Alabama. However, there is uncertainty in the valuation of pending claims and prediction of litigation results.

The Company and the Utilities own and operate natural gas distribution, transmission, and storage facilities, the operations of which are subject to various environmental laws, regulations, and interpretations. While environmental issues resulting from such operations arise in the ordinary course of business, such issues have not materially affected the Company’s or Utilities’ financial position and results of operations. As environmental laws, regulations, and their interpretations change, the Company or the Utilities may incur additional environmental liabilities that may result in additional costs, which may be material.

In the natural gas industry, many gas distribution companies have incurred environmental liabilities associated with sites they or their predecessor companies formerly owned or operated where manufactured gas operations took place. The Utilities each have former manufactured gas plant (MGP) operations in their respective service territories, some of which are discussed under the Spire Missouri and Spire Alabama headings below. To the extent costs are incurred associated with environmental remediation activities, the Utilities would request authority from their respective regulators to defer such costs (less any amounts received from insurance proceeds or as contributions from other potentially responsible parties (PRPs)) and collect them through future rates.

To date, costs incurred for all Spire MGP sites for investigation, remediation and monitoring have not been material. However, the amount of costs relative to future remedial actions at these and other sites is unknown and may be material. The actual future costs that Spire Missouri and Spire Alabama may incur could be materially higher or lower depending upon several factors, including whether remediation will be required, final selection and regulatory approval of any remedial actions, changing technologies and government regulations, the ultimate ability of other PRPs to pay, and any insurance recoveries.

In 2020, Spire retained an outside consultant to conduct probabilistic cost modeling of its former MGP sites in Missouri and Alabama. The purpose of this analysis was to develop an estimated range of probabilistic future liability for each of their MGP sites. That analysis, completed in March 2021, provided a range of demonstrated possible future expenditures to investigate, monitor and remediate the former MGP sites. Spire Missouri and Spire Alabama have recorded their best estimates of the probable expenditures that relate to these matters. The amount remains immaterial, and Spire Missouri, Spire Alabama and the Company do not expect potential liabilities that may arise from remediating these sites to have a material impact on their future financial condition or results of operations.

Spire Missouri

Spire Missouri has identified three former MGP sites in the city of St. Louis, Missouri (the “City”) where costs have been incurred and claims have been asserted. Spire Missouri has enrolled two of the sites in the Missouri Department of Natural Resources (MoDNR) Brownfields/Voluntary Cleanup Program (BVCP). The third site is the result of an assertion by the United States Environmental Protection Agency (EPA).

In conjunction with redevelopment of the Carondelet Coke site, Spire Missouri and another former owner of the site entered into an agreement (the “Remediation Agreement”) with the City development agencies, the developer, and an environmental consultant that obligates one of the City agencies and the environmental consultant to remediate the site and obtain a No Further Action (NFA) letter from the MoDNR. The Remediation Agreement also provides for a release of Spire Missouri and the other former site owner from certain liabilities related to the past and current environmental condition of the site and requires the developer and the environmental consultant to maintain certain insurance coverage, including remediation cost containment, premises pollution liability, and professional liability. The operative provisions of the Remediation Agreement were triggered on December 20, 2010, on which date Spire Missouri and the other former site owner, as full consideration under the Remediation Agreement, paid a small percentage of the cost of remediation of the site. The property was divided into seven parcels, and MoDNR NFA letters have been received for six of the parcels. Remediation is ongoing on the last parcel.

In a letter dated June 29, 2011, the Attorney General for the State of Missouri informed Spire Missouri that the MoDNR had completed an investigation of the second site, Station A. The Attorney General requested that Spire Missouri participate in the follow up investigations of the site. In a letter dated January 10, 2012, Spire Missouri stated that it would participate in future environmental response activities at the site in conjunction with other PRPs. Accordingly, Spire Missouri entered into a cost sharing agreement for remedial investigation with other PRPs. MoDNR never approved the agreement, so no remedial investigation took place.

Additionally, in correspondence dated November 30, 2016, Region 7 of the EPA has asserted that Spire Missouri is liable under Section 107(a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) for alleged coal gas waste contamination at a third site, Station B. Spire Missouri and the site owner notified the EPA that information and data provided by the EPA to date does not rise to the level of documenting a threat to the public health or environment. As such, in March 2017 Spire Missouri requested more information from the EPA. Spire Missouri never received a response from the EPA.

Spire Missouri has notified its insurers that it seeks reimbursement for costs incurred in the past and future potential liabilities associated with these MGP sites. While some of the insurers have denied coverage and reserved their rights, Spire Missouri retains the right to seek potential reimbursements from them.

On March 10, 2015, Spire Missouri received a Section 104(e) information request under CERCLA from EPA Region 7 regarding the former Thompson Chemical/Superior Solvents site in the City. In turn, Spire Missouri issued a Freedom of Information Act (FOIA) request to the EPA on April 3, 2015, to identify the basis of the inquiry. The FOIA response from the EPA was received on July 15, 2015, and a response was provided to the EPA on August 15, 2015. Spire Missouri has received no further inquiry from the EPA regarding this matter.

In its western service area, Spire Missouri has six owned MGP sites enrolled in the BVCP, including Joplin MGP #1, St. Joseph MGP #1, Kansas City Coal Gas Station B, Kansas City Station A Railroad area, Kansas City Coal Gas Station A, and Independence MGP #2. Source removal has been conducted at all the owned sites since 2003 with the exception of Joplin. On September 15, 2016, a request was made with the MoDNR for a restrictive covenant use limitation with respect to Joplin. Remediation efforts at the six sites are at various stages of completion, ranging from groundwater monitoring and sampling following source removal activities to the aforementioned request for the Joplin site. As part of its participation in the BVCP, Spire Missouri communicates regularly with the MoDNR with respect to its remediation efforts and monitoring activities at these sites. On May 11, 2015, MoDNR approved the next phase of investigation at the Kansas City Station A Railroad area.

Spire Alabama

Spire Alabama is in the chain of title of nine former MGP sites, four of which it still owns, and five former manufactured gas distribution sites, one of which it still owns. All are located in the state of Alabama.

In 2011, a removal action was completed and an NFA letter was received at the Huntsville MGP site pursuant to an Administrative Settlement Agreement and Order on Consent among the EPA, Spire Alabama and the current site owner.

In 2012, Spire Alabama responded to an EPA Request for Information Pursuant to Section 104 of CERCLA relating to the 35th Avenue Superfund Site located in North Birmingham, Jefferson County, Alabama. Spire Alabama was identified as a PRP under CERCLA for the cleanup of the site or costs the EPA incurs in cleaning up the site. At this point, Spire Alabama has not been provided information that would allow it to determine the extent, if any, of its potential liability with respect to the 35th Avenue Superfund Site and vigorously denies its inclusion as a PRP.

Assessments were performed by the EPA of the former MGP sites in Gadsden and Anniston, and NFA letters were received after each assessment.

Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is aware of the following contingent matters.

Spire Marketing, along with many natural gas industry participants, faced the unprecedented effects of Winter Storm Uri in February 2021. Numerous natural gas producers and midstream operators were unable to deliver natural gas to market as they experienced wellhead freeze-offs, power outages and equipment failure due to the extreme weather. These events resulted in supply curtailments, and related notices of force majeure to excuse performance, from and to certain counterparties. Further, these events have made Spire Marketing subject to various commercial disputes (including regarding force majeure). As such, Spire Marketing has recorded an estimate of potential liabilities for damages based on communications with counterparties and the facts and circumstances surrounding each transaction. These estimates are adjusted as new facts emerge or settlement agreements are reached, and it is possible that final settlement amounts may materially differ from the current estimate.

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Item 5 - Other Information

9 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Issuer Rule 10b5-1, Material Terms [Text Block]

Item 5. Other Information

During the quarterly period ended June 30, 2023, no director or officer of the Company adopted or terminated any contract, instruction or written plan for the purchase or sale of securities of the Company intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any “non-Rule 10b5-1 trading arrangement” (as defined in the Exchange Act).

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Significant Accounting Policies (Policies)

9 Months Ended

Jun. 30, 2023

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

BASIS OF PRESENTATION – These notes are an integral part of the accompanying unaudited financial statements of Spire Inc. (“Spire” or the “Company”) presented on a consolidated basis, Spire Missouri Inc. (“Spire Missouri”) and Spire Alabama Inc. (“Spire Alabama”). Spire Missouri, Spire Alabama and Spire EnergySouth Inc. (“Spire EnergySouth”) are wholly owned subsidiaries of Spire. Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth (Spire Gulf Inc. and Spire Mississippi Inc.) are collectively referred to as the “Utilities.”

The accompanying unaudited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information with the instructions to Form 10-Q and Rule 10-01 of Regulation S‑X. Accordingly, they do not include all the disclosures required for complete financial statements. In the opinion of management, the accompanying unaudited financial statements include all adjustments necessary for the fair presentation of the results of operations for the periods presented. This Form 10-Q should be read in conjunction with the Notes to Financial Statements contained in Spire, Spire Missouri and Spire Alabama’s combined Annual Report on Form 10-K for the fiscal year ended September 30, 2022.

The consolidated financial position, results of operations, and cash flows of Spire include the accounts of the Company and all its subsidiaries. Transactions and balances between consolidated entities have been eliminated from the consolidated financial statements of Spire. In compliance with GAAP, transactions between Spire Missouri and Spire Alabama and their affiliates, as well as intercompany balances on their balance sheets, have not been eliminated from their separate financial statements.

Certain information is presented by reportable segment, as described below. Effective during the first quarter of fiscal 2023, the Company changed its reportable segments to reflect changes in the way its chief operating decision maker evaluates the performance of its operations, develops strategy and allocates capital resources. Specifically, Midstream, which was formerly included in Other, is now reported separately. The Company's historical segment disclosures have been recast to be consistent with the current presentation.

NATURE OF OPERATIONS – Spire has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment consists of the regulated natural gas distribution operations of the Company and is the core business segment of Spire in terms of revenue and earnings. The Gas Utility segment is comprised of the operations of: Spire Missouri, serving St. Louis, Kansas City, and other areas in Missouri; Spire Alabama, serving central and northern Alabama; and the subsidiaries of Spire EnergySouth, serving the Mobile, Alabama area and south-central Mississippi. The Gas Marketing segment includes Spire’s largest gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The Midstream segment includes Spire Storage and Spire STL Pipeline, which are subsidiaries engaged in the storage and transportation of natural gas. The activities of the Company’s other subsidiaries are reported as Other and are described in Note 10, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment. 

The Company’s earnings are derived primarily from its Gas Utility segment. Due to the seasonal nature of the Utilities’ business and the volumetric Spire Missouri rate design, earnings are typically concentrated during the heating season of November through April each fiscal year. As a result, the interim statements of income for Spire, Spire Missouri and Spire Alabama are not necessarily indicative of annual results or representative of succeeding quarters of the fiscal year.

Public Utilities, Policy [Policy Text Block]

REGULATED OPERATIONS – The Utilities account for their regulated operations in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 980, Regulated Operations. This topic sets forth the application of GAAP for those companies whose rates are established by or are subject to approval by an independent third-party regulator. The provisions of this accounting guidance require, among other things, that financial statements of a regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. In addition, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities). Management believes that the current regulatory environment supports the continued use of these regulatory accounting principles and that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

As authorized by the Missouri Public Service Commission (MoPSC), the Mississippi Public Service Commission (MSPSC) and the Alabama Public Service Commission (APSC), the Purchased Gas Adjustment (PGA) clauses and Gas Supply Adjustment (GSA) riders allow the Utilities to pass through to customers the cost of purchased gas supplies. Regulatory assets and liabilities related to the PGA clauses and the GSA riders are both labeled Unamortized Purchased Gas Adjustments herein. See additional information about regulatory assets and liabilities in Note 5, Regulatory Matters.

Derivatives, Policy [Policy Text Block]

DERIVATIVES – In the course of their business, certain subsidiaries of Spire enter into commitments associated with the purchase or sale of natural gas. Certain of their derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of FASB ASC Topic 815, Derivatives and Hedging. Those contracts are accounted for as executory contracts and recorded on an accrual basis. Revenues and expenses from such contracts are recorded gross. Contracts not designated as normal purchases or normal sales are recorded as derivatives with changes in fair value recognized in earnings in the periods prior to physical delivery. Certain of Spire Marketing’s wholesale purchase and sale transactions are classified as trading activities for financial reporting purposes, with income and expenses presented on a net basis in natural gas expenses in the Condensed Consolidated Statements of Income. Spire also enters into cash flow hedges through execution of interest rate swap contracts to protect itself against adverse movements in interest rates.

Transactions With Affiliates [Policy Text Block]

TRANSACTIONS WITH AFFILIATES – Transactions between affiliates of the Company have been eliminated from the consolidated financial statements of Spire. As reflected in their separate financial statements, Spire Missouri and Spire Alabama borrowed funds from the Company and incurred related interest. Spire Missouri and Spire Alabama also participated in normal intercompany shared services transactions. Spire Missouri’s and Spire Alabama’s other transactions with affiliates are presented below:

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire Missouri
Purchases of natural gas from Spire Marketing	$	6.5	$	26.2	$	48.8	$	62.3
Transportation services received from Spire STL Pipeline		8.0		8.0		23.9		23.9
Sales of natural gas to Spire Marketing		0.3		—		0.4		—
Spire Alabama
Purchases of natural gas from Spire Marketing	$	1.7	$	3.2	$	2.8	$	3.2

Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]

RESTRICTED CASH AND OTHER INVESTMENTS – In Spire’s statement of cash flows for the period ended June 30, 2023, total Cash, Cash Equivalents, and Restricted Cash included $19.7, $14.0 and $14.1 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of June 30, 2023,  September 30, 2022, and June 30, 2022, respectively (in addition to amounts shown as “Cash and cash equivalents”). This restricted cash has been segregated and invested in debt securities in a trust account based on collateral requirements for reinsurance at Spire’s risk management company.

Business Combinations Policy [Policy Text Block]

BUSINESS COMBINATIONS – A subsidiary of Spire in the Midstream segment acquired a natural gas storage facility in northern Oklahoma, now named Spire Storage Salt Plains LLC, on April 1, 2023. The $37 purchase price has been fully allocated to the assets acquired and liabilities assumed based on their fair value at the acquisition date, consisting almost entirely of base gas and other property, plant and equipment, resulting in no goodwill. Accounting for this business combination is essentially complete, but the preliminary purchase price allocation remains subject to customary adjustments as provided in the purchase agreement.

Accrued Capital Expenditures [Policy Text Block]

ACCRUED CAPITAL EXPENDITURES – Accrued capital expenditures, shown in the following table, are excluded from capital expenditures in the statements of cash flows until paid.

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire	$	62.2	$	77.8	$	52.6
Spire Missouri		33.4		45.6		39.2
Spire Alabama		4.5		19.2		7.7

Receivable [Policy Text Block]

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES – Trade accounts receivable are recorded at the amounts due from customers, including unbilled amounts. Accounts receivable are written off when they are deemed to be uncollectible. An allowance for expected credit losses is estimated and updated based on relevant data and trends such as accounts receivable aging, historical write-off experience, current write-off trends, economic conditions, and the impact of weather and availability of customer payment assistance on collection trends. For the Utilities, net write-offs as a percentage of revenue has historically been the best predictor of base net write-off experience over time. Management judgment is applied in the development of the allowance due to the complexity of variables and subjective nature of certain relevant factors. The accounts receivable of Spire’s non-utility businesses are evaluated separately from those of the Utilities. The allowance for credit losses for those other businesses is based on a continuous evaluation of the individual counterparty risk and is not significant for the periods presented. Activity in the allowance for credit losses is shown in the following table.

	Spire						Spire Missouri						Spire Alabama
Three Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	40.6		$	35.1		$	34.5		$	27.0		$	5.3		$	7.1
Provision for expected credit losses		1.2			1.9			0.3			1.8			0.8			—
Write-offs, net of recoveries		(7.1	)		(4.4	)		(6.1	)		(3.7	)		(0.8	)		(0.5	)
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

Nine Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	31.9		$	30.3		$	24.9		$	22.6		$	6.3		$	6.6
Provision for expected credit losses		13.5			8.6			11.4			8.6			1.5			—
Write-offs, net of recoveries		(10.7	)		(6.3	)		(7.6	)		(6.1	)		(2.5	)		—
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

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Note 1 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire Missouri
Purchases of natural gas from Spire Marketing	$	6.5	$	26.2	$	48.8	$	62.3
Transportation services received from Spire STL Pipeline		8.0		8.0		23.9		23.9
Sales of natural gas to Spire Marketing		0.3		—		0.4		—
Spire Alabama
Purchases of natural gas from Spire Marketing	$	1.7	$	3.2	$	2.8	$	3.2

Schedule Of Capital Expenditure Excluded From Statement Of Cash Flow [Table Text Block]

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire	$	62.2	$	77.8	$	52.6
Spire Missouri		33.4		45.6		39.2
Spire Alabama		4.5		19.2		7.7

Accounts Receivable, Allowance for Credit Loss [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
Three Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	40.6		$	35.1		$	34.5		$	27.0		$	5.3		$	7.1
Provision for expected credit losses		1.2			1.9			0.3			1.8			0.8			—
Write-offs, net of recoveries		(7.1	)		(4.4	)		(6.1	)		(3.7	)		(0.8	)		(0.5	)
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

Nine Months Ended June 30,	2023			2022			2023			2022			2023			2022
Allowance at beginning of period	$	31.9		$	30.3		$	24.9		$	22.6		$	6.3		$	6.6
Provision for expected credit losses		13.5			8.6			11.4			8.6			1.5			—
Write-offs, net of recoveries		(10.7	)		(6.3	)		(7.6	)		(6.1	)		(2.5	)		—
Allowance at end of period	$	34.7		$	32.6		$	28.7		$	25.1		$	5.3		$	6.6

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Note 2 - Revenue (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Gas Utility:
Residential	$	238.1		$	239.5		$	1,486.3		$	1,268.8
Commercial and industrial		102.2			86.2			533.1			275.6
Transportation		29.0			26.9			93.2			91.6
Off-system and other incentive		8.2			10.1			21.9			26.9
Other customer revenue		5.1			5.6			13.8			15.7
Total revenue from contracts with customers		382.6			368.3			2,148.3			1,678.6
Changes in accrued revenue under alternative revenue programs		5.2			9.1			27.0			19.7
Total Gas Utility operating revenues		387.8			377.4			2,175.3			1,698.3
Gas Marketing		23.1			64.1			157.8			171.4
Midstream		17.4			14.6			49.1			41.3
Other		4.3			4.1			12.4			12.1
Total before eliminations		432.6			460.2			2,394.6			1,923.1
Intersegment eliminations (see Note 10, Information by Operating Segment)		(14.1	)		(12.2	)		(38.7	)		(38.8	)
Total Operating Revenues	$	418.5		$	448.0		$	2,355.9		$	1,884.3

Spire Missouri
Residential	$	171.7	$	171.1		$	1,142.3	$	947.3
Commercial and industrial		61.1		51.9			369.2		140.0
Transportation		7.1		7.1			26.1		26.4
Off-system and other incentive		6.0		4.5			15.6		20.3
Other customer revenue		3.8		3.2			10.1		9.1
Total revenue from contracts with customers		249.7		237.8			1,563.3		1,143.1
Changes in accrued revenue under alternative revenue programs		4.1		(1.1	)		22.7		12.7
Total Operating Revenues	$	253.8	$	236.7		$	1,586.0	$	1,155.8

Spire Alabama
Residential	$	56.7	$	56.2	$	288.1		$	266.2
Commercial and industrial		32.7		24.0		127.8			101.6
Transportation	18.9		17.4		59.0				57.5
Off-system and other incentive		2.2		5.6		6.3			6.6
Other customer revenue		0.8		1.5		2.7			4.2
Total revenue from contracts with customers		111.3		104.7		483.9			436.1
Changes in accrued revenue under alternative revenue programs		1.8		11.0		(0.1	)		10.3
Total Operating Revenues	$	113.1	$	115.7	$	483.8		$	446.4

Schedule Of Taxes On Revenues [Table Text Block]

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	26.0	$	23.3	$	116.6	$	97.1
Spire Missouri		18.9		16.7		86.6		70.6
Spire Alabama		6.1		5.5		25.5		22.5

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Note 3 - Earnings Per Common Share (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023		2022
Basic Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Basic (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.52	$	4.17
Diluted Earnings Per Common Share:
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6	$	227.9
Less: Provision for preferred dividends		3.7			3.7			11.1		11.1
(Loss) income allocated to participating securities		(0.1	)		—			0.4		0.3
(Loss) Income Available to Common Shareholders	$	(25.2	)	$	(5.1	)	$	237.1	$	216.5
Weighted Average Common Shares Outstanding (in millions)		52.5			52.2			52.5		51.9
Dilutive Effect of forward sales of common stock, restricted stock and restricted stock units (in millions)*		—			—			0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.5			52.2			52.6		52.0
Diluted (Loss) Earnings Per Common Share	$	(0.48	)	$	(0.10	)	$	4.51	$	4.16
* Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future		2.7			0.2			2.5		0.2

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Note 5 - Regulatory Matters (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Regulatory Assets and Liabilities [Table Text Block]

	June 30,		September 30,		June 30,
Spire	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	66.2	$	322.2	$	123.4
Other		27.1		33.2		28.6
Total Current Regulatory Assets		93.3		355.4		152.0
Noncurrent:
Pension and postretirement benefit costs		268.8		294.5		317.5
Cost of removal		597.9		493.7		471.9
Future income taxes due from customers		140.1		137.8		140.4
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Other		152.3		129.2		124.3
Total Noncurrent Regulatory Assets		1,421.2		1,112.4		1,205.6
Total Regulatory Assets	$	1,514.5	$	1,467.8	$	1,357.6
Regulatory Liabilities:
Current:
Other	$	5.5	$	3.7	$	3.2
Total Current Regulatory Liabilities		5.5		3.7		3.2
Noncurrent:
Deferred taxes due to customers		131.8		145.3		148.7
Pension and postretirement benefit costs		165.3		172.6		185.0
Accrued cost of removal		107.7		32.9		40.7
Unamortized purchased gas adjustments		—		53.0		—
Other		23.3		14.4		14.6
Total Noncurrent Regulatory Liabilities		428.1		418.2		389.0
Total Regulatory Liabilities	$	433.6	$	421.9	$	392.2

	June 30,		September 30,		June 30,
Spire Missouri	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	32.9	$	275.1	$	89.7
Other		2.1		13.0		0.2
Total Current Regulatory Assets		35.0		288.1		89.9
Noncurrent:
Future income taxes due from customers		131.8		129.2		131.8
Pension and postretirement benefit costs		193.4		222.9		238.5
Energy efficiency		55.8		57.2		54.1
Unamortized purchased gas adjustments		206.3		—		97.4
Cost of removal		95.3		25.2		34.9
Other		136.5		113.1		107.9
Total Noncurrent Regulatory Assets		819.1		547.6		664.6
Total Regulatory Assets	$	854.1	$	835.7	$	754.5
Regulatory Liabilities:
Noncurrent:
Deferred taxes due to customers	$	118.1	$	127.9	$	131.3
Pension and postretirement benefit costs		137.9		143.6		154.5
Accrued cost of removal		72.3		—		7.3
Unamortized purchased gas adjustments		—		53.0		—
Other		17.8		7.3		7.7
Total Noncurrent Regulatory Liabilities		346.1		331.8		300.8
Total Regulatory Liabilities	$	346.1	$	331.8	$	300.8

	June 30,		September 30,		June 30,
Spire Alabama	2023		2022		2022
Regulatory Assets:
Current:
Unamortized purchased gas adjustments	$	30.9	$	43.8	$	31.6
Other		13.0		13.1		21.3
Total Current Regulatory Assets		43.9		56.9		52.9
Noncurrent:
Future income taxes due from customers		2.0		2.2		2.2
Pension and postretirement benefit costs		71.1		66.5		73.8
Cost of removal		502.6		468.5		437.0
Other		1.0		1.0		1.1
Total Noncurrent Regulatory Assets		576.7		538.2		514.1
Total Regulatory Assets	$	620.6	$	595.1	$	567.0
Regulatory Liabilities:
Noncurrent:
Pension and postretirement benefit costs	$	17.3	$	19.4	$	20.4
Other		3.5		3.6		3.6
Total Noncurrent Regulatory Liabilities		20.8		23.0		24.0
Total Regulatory Liabilities	$	20.8	$	23.0	$	24.0

Schedule of Regulatory Assets Not Earning Return [Table Text Block]

	June 30,		September 30,		June 30,
	2023		2022		2022
Spire
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		138.0		135.6		138.2
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	606.9	$	686.3	$	622.1
Spire Missouri
Pension and postretirement benefit costs	$	127.5	$	152.9	$	165.8
Future income taxes due from customers		131.8		129.2		131.8
Unamortized purchased gas adjustments		239.2		275.1		187.2
Other		102.2		122.7		130.9
Total Regulatory Assets Not Earning a Return	$	600.7	$	679.9	$	615.7

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Note 6 - Financing (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Short-Term Debt [Table Text Block]

	Spire (Parent Only)			Spire Missouri						Spire Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Nine Months Ended June 30, 2023
Highest borrowings outstanding	$	1,282.0		$	250.0		$	656.9		$	274.0		$	1,482.0
Lowest borrowings outstanding		354.4			—			3.8			76.7			489.0
Weighted average borrowings		778.7			89.4			308.9			123.3			868.1
Weighted average interest rate		4.7	%		5.5	%		4.6	%		4.8	%		4.8	%
As of June 30, 2023
Borrowings outstanding	$	557.6		$	—		$	228.1		$	108.1		$	557.6
Weighted average interest rate		5.5	%		—	%		5.5	%		5.5	%		5.5	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		n/a			3.3	%		3.3	%		3.3	%
As of June 30, 2022
Borrowings outstanding	$	709.2		$	—		$	285.4		$	196.3		$	709.2
Weighted average interest rate		2.0	%		n/a			2.0	%		2.0	%		2.0	%

Summary Of Capitalized Interest [Table Text Block]

	Three Months Ended June 30,				Nine Months Ended June 30,
	2023		2022		2023		2022
Spire	$	2.3	$	1.1	$	5.8	$	3.2
Spire Missouri		1.0		0.2		2.1		0.3
Spire Alabama		0.5		0.9		1.8		2.5

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Note 7 - Fair Value of Financial Instruments (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

					Classification of Estimated Fair Value
	Carrying Amount		Fair Value		Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)
Spire
As of June 30, 2023
Cash and cash equivalents	$	5.3	$	5.3	$	5.3	$	—
Notes payable		557.6		557.6		—		557.6
Long-term debt, including current portion		3,959.9		3,650.7		—		3,650.7
As of September 30, 2022
Cash and cash equivalents	$	6.5	$	6.5	$	6.5	$	—
Notes payable		1,037.5		1,037.5		—		1,037.5
Long-term debt, including current portion		3,239.7		2,851.8		—		2,851.8
As of June 30, 2022
Cash and cash equivalents	$	16.0	$	16.0	$	16.0	$	—
Notes payable		709.2		709.2		—		709.2
Long-term debt, including current portion		3,239.1		3,032.1		—		3,032.1
Spire Missouri
As of June 30, 2023
Notes payable – associated companies	$	228.1	$	228.1	$	—	$	228.1
Long-term debt, including current portion		2,035.1		1,890.2		—		1,890.2
As of September 30, 2022
Notes payable – associated companies	$	445.3	$	445.3	$	—	$	445.3
Long-term debt, including current portion		1,637.7		1,473.9		—		1,473.9
As of June 30, 2022
Cash and cash equivalents	$	7.0	$	7.0	$	7.0	$	—
Notes payable – associated companies		285.4		285.4		—		285.4
Long-term debt		1,637.4		1,562.4		—		1,562.4
Spire Alabama
As of June 30, 2023
Cash and cash equivalents	$	0.5	$	0.5	$	0.5	$	—
Notes payable – associated companies		108.1		108.1		—		108.1
Long-term debt		745.8		681.5		—		681.5
As of September 30, 2022
Cash and cash equivalents	$	2.4	$	2.4	$	2.4	$	—
Notes payable – associated companies		260.9		260.9		—		260.9
Long-term debt		571.5		485.0		—		485.0
As of June 30, 2022
Cash and cash equivalents	$	3.7	$	3.7	$	3.7	$	—
Notes payable – associated companies		196.3		196.3		—		196.3
Long-term debt		571.4		527.2		—		527.2

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Note 8 - Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
Gas Marketing:
NYMEX/ICE natural gas contracts		10.5		—		(10.5	)		—
Natural gas commodity contracts		35.8		—		(1.0	)		34.8
Other:
U.S. stock/bond mutual funds		31.4		—		—			31.4
Interest rate swaps		—		22.8		—			22.8
Total	$	99.1	$	22.8	$	(11.5	)	$	110.4
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		24.3		—		(24.3	)		—
Natural gas commodity contracts		34.9		—		(1.0	)		33.9
Other:
Interest rate swaps		—		0.8		—			0.8
Total	$	104.7	$	0.8	$	(70.8	)	$	34.7

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of September 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		91.8		—		(91.8	)		—
Natural gas commodity contracts		56.6		—		(4.0	)		52.6
Other:
U.S. stock/bond mutual funds		29.3		—		—			29.3
Interest rate swaps		—		63.6		—			63.6
Total	$	254.6	$	63.6	$	(153.6	)	$	164.6
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		82.3		—		(82.3	)		—
Natural gas commodity contracts		65.5		—		(4.0	)		61.5
Total	$	178.5	$	—	$	(117.0	)	$	61.5
As of June 30, 2022
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		94.2		—		(94.2	)		—
Natural gas commodity contracts		57.6		—		(5.3	)		52.3
Other:
U.S. stock/bond mutual funds		31.6		—		—			31.6
Interest rate swaps		—		52.7		(7.6	)		45.1
Total	$	243.3	$	52.7	$	(146.7	)	$	149.3
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		60.8		—		(60.8	)		—
Natural gas commodity contracts		118.3		—		(5.3	)		113.0
Other:
Interest rate swaps		—		7.6		(7.6	)		—
Total	$	191.9	$	7.6	$	(86.5	)	$	113.0

	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Effects of Netting and Cash Margin Receivables /Payables			Total
As of June 30, 2023
ASSETS
U.S. stock/bond mutual funds	$	21.4	$	—	$	—		$	21.4
LIABILITIES
NYMEX/ICE natural gas contracts	$	44.8	$	—	$	(44.8	)	$	—
Gasoline and heating oil contracts		0.7		—		(0.7	)		—
Total	$	45.5	$	—	$	(45.5	)	$	—
As of September 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	19.1	$	—	$	—		$	19.1
NYMEX/ICE natural gas contracts		57.8		—		(57.8	)		—
Total	$	76.9	$	—	$	(57.8	)	$	19.1
LIABILITIES
NYMEX/ICE natural gas contracts	$	30.7	$	—	$	(30.7	)	$	—
As of June 30, 2022
ASSETS
U.S. stock/bond mutual funds	$	20.3	$	—	$	—		$	20.3
NYMEX/ICE natural gas contracts		39.6		—		(39.6	)		—
Total	$	59.9	$	—	$	(39.6	)	$	20.3
LIABILITIES
NYMEX/ICE natural gas contracts	$	12.8	$	—	$	(12.8	)	$	—

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Note 9 - Pension Plans and Other Postretirement Benefits (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	4.2		$	4.8		$	12.2		$	15.6
Interest cost on projected benefit obligation		6.6			5.4			18.9			15.8
Expected return on plan assets		(6.4	)		(7.7	)		(18.5	)		(24.1	)
Amortization of prior service credit		(1.1	)		(1.1	)		(3.4	)		(3.4	)
Amortization of actuarial loss		1.5			2.5			4.7			9.8
Loss on lump-sum settlements		—			17.8			8.6			29.5
Subtotal		4.8			21.7			22.5			43.2
Regulatory adjustment		6.1			(6.9	)		18.3			2.5
Net pension cost	$	10.9		$	14.8		$	40.8		$	45.7
Spire Missouri
Service cost – benefits earned during the period	$	2.8		$	3.5		$	8.5		$	11.2
Interest cost on projected benefit obligation		4.5			3.8			13.4			10.9
Expected return on plan assets		(4.5	)		(5.7	)		(13.5	)		(17.6	)
Amortization of prior service credit		(0.5	)		(0.5	)		(1.5	)		(1.5	)
Amortization of actuarial loss		1.5			2.0			4.6			7.6
Loss on lump-sum settlements		—			17.3			—			24.1
Subtotal		3.8			20.4			11.5			34.7
Regulatory adjustment		3.4			(8.3	)		19.6			1.3
Net pension cost	$	7.2		$	12.1		$	31.1		$	36.0
Spire Alabama
Service cost – benefits earned during the period	$	1.3		$	1.1		$	3.2		$	3.8
Interest cost on projected benefit obligation		1.5			1.1			3.6			3.4
Expected return on plan assets		(1.1	)		(1.2	)		(2.7	)		(4.0	)
Amortization of prior service credit		(0.6	)		(0.6	)		(1.8	)		(1.8	)
Amortization of actuarial loss		0.1			0.5			0.4			2.2
Loss on lump-sum settlements		—			0.5			8.6			5.4
Subtotal		1.2			1.4			11.3			9.0
Regulatory adjustment		2.4			1.1			(2.0	)		0.5
Net pension cost	$	3.6		$	2.5		$	9.3		$	9.5

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Spire
Service cost – benefits earned during the period	$	1.2		$	1.9		$	3.6		$	5.8
Interest cost on accumulated postretirement benefit obligation		2.0			1.6			6.3			4.6
Expected return on plan assets		(4.0	)		(4.3	)		(11.8	)		(12.8	)
Amortization of prior service cost		0.1			0.3			0.2			0.8
Amortization of actuarial gain		(0.9	)		(0.5	)		(3.0	)		(1.7	)
Subtotal		(1.6	)		(1.0	)		(4.7	)		(3.3	)
Regulatory adjustment		(0.5	)		(0.1	)		(0.2	)		3.2
Net postretirement benefit income	$	(2.1	)	$	(1.1	)	$	(4.9	)	$	(0.1	)
Spire Missouri
Service cost – benefits earned during the period	$	1.0		$	1.6		$	3.0		$	4.8
Interest cost on accumulated postretirement benefit obligation		1.6			1.2			4.9			3.4
Expected return on plan assets		(2.6	)		(2.9	)		(7.9	)		(8.6	)
Amortization of prior service cost		0.1			0.2			0.4			0.6
Amortization of actuarial gain		(0.8	)		(0.5	)		(2.4	)		(1.5	)
Subtotal		(0.7	)		(0.4	)		(2.0	)		(1.3	)
Regulatory adjustment		(0.2	)		0.4			1.1			4.5
Net postretirement benefit cost	$	(0.9	)	$	—		$	(0.9	)	$	3.2
Spire Alabama
Service cost – benefits earned during the period	$	0.2		$	0.3		$	0.5		$	0.9
Interest cost on accumulated postretirement benefit obligation		0.4			0.4			1.3			1.1
Expected return on plan assets		(1.3	)		(1.3	)		(3.8	)		(3.9	)
Amortization of prior service (credit) cost		—			0.1			(0.2	)		0.2
Amortization of actuarial gain		(0.1	)		—			(0.4	)		—
Subtotal		(0.8	)		(0.5	)		(2.6	)		(1.7	)
Regulatory adjustment		(0.5	)		(0.5	)		(1.4	)		(1.4	)
Net postretirement benefit income	$	(1.3	)	$	(1.0	)	$	(4.0	)	$	(3.1	)

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Note 10 - Information by Operating Segment (Tables)

9 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Gas Utility			Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	387.5		$	23.1		$	7.7	$	0.2		$	—		$	418.5
Intersegment revenues		0.3			—			9.7		4.1			(14.1	)		—
Total Operating Revenues		387.8			23.1			17.4		4.3			(14.1	)		418.5
Operating Expenses:
Natural gas		154.6			25.3			—		—			(10.1	)		169.8
Operation and maintenance		111.7			4.2			8.1		5.5			(4.0	)		125.5
Depreciation and amortization		61.7			0.3			2.1		0.2			—			64.3
Taxes, other than income taxes		45.9			0.4			0.7		(0.1	)		—			46.9
Total Operating Expenses		373.9			30.2			10.9		5.6			(14.1	)		406.5
Operating Income (Loss)	$	13.9		$	(7.1	)	$	6.5	$	(1.3	)	$	—		$	12.0
Net Economic (Loss) Earnings	$	(12.3	)	$	(2.5	)	$	3.6	$	(7.4	)	$	—		$	(18.6	)

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Three Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	377.4	$	64.1		$	6.3	$	0.2		$	—		$	448.0
Intersegment revenues		—		—			8.3		3.9			(12.2	)		—
Total Operating Revenues		377.4		64.1			14.6		4.1			(12.2	)		448.0
Operating Expenses:
Natural gas		144.5		67.1			—		—			(8.3	)		203.3
Operation and maintenance		95.0		3.2			4.8		3.2			(3.9	)		102.3
Depreciation and amortization		58.1		0.3			1.8		0.2			—			60.4
Taxes, other than income taxes		43.0		0.4			0.6		0.1			—			44.1
Total Operating Expenses		340.6		71.0			7.2		3.5			(12.2	)		410.1
Operating Income (Loss)	$	36.8	$	(6.9	)	$	7.4	$	0.6		$	—		$	37.9
Net Economic Earnings (Loss)	$	4.2	$	0.4		$	4.3	$	(4.8	)	$	—		$	4.1

	Gas Utility		Gas Marketing			Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2022
Operating Revenues:
Revenues from external customers	$	1,698.3	$	171.4		$	14.1	$	0.5		$	—		$	1,884.3
Intersegment revenues		—		—			27.2		11.6			(38.8	)		—
Total Operating Revenues		1,698.3		171.4			41.3		12.1			(38.8	)		1,884.3
Operating Expenses:
Natural gas		710.7		160.9			—		—			(27.1	)		844.5
Operation and maintenance		306.5		9.1			16.4		11.6			(11.7	)		331.9
Depreciation and amortization		169.2		1.0			5.6		0.4			—			176.2
Taxes, other than income taxes		150.3		0.8			2.1		0.1			—			153.3
Total Operating Expenses		1,336.7		171.8			24.1		12.1			(38.8	)		1,505.9
Operating Income (Loss)	$	361.6	$	(0.4	)	$	17.2	$	—		$	—		$	378.4
Net Economic Earnings (Loss)	$	240.6	$	15.3		$	9.8	$	(18.0	)	$	—		$	247.7

Reconciliation Of Consolidated Net Economic Earnings To Consolidated Net Income [Table Text Block]

	Gas Utility		Gas Marketing		Midstream		Other			Eliminations			Consolidated
Nine Months Ended June 30, 2023
Operating Revenues:
Revenues from external customers	$	2,174.9	$	157.8	$	22.7	$	0.5		$	—		$	2,355.9
Intersegment revenues		0.4		—		26.4		11.9			(38.7	)		—
Total Operating Revenues		2,175.3		157.8		49.1		12.4			(38.7	)		2,355.9
Operating Expenses:
Natural gas		1,099.5		102.8		—		—			(26.8	)		1,175.5
Operation and maintenance		350.9		16.2		20.1		14.4			(11.9	)		389.7
Depreciation and amortization		181.6		1.0		6.0		0.4			—			189.0
Taxes, other than income taxes		176.2		1.1		1.9		—			—			179.2
Total Operating Expenses		1,808.2		121.1		28.0		14.8			(38.7	)		1,933.4
Operating Income (Loss)	$	367.1	$	36.7	$	21.1	$	(2.4	)	$	—		$	422.5
Net Economic Earnings (Loss)	$	234.5	$	45.0	$	11.6	$	(25.4	)	$	—		$	265.7

	Three Months Ended June 30,						Nine Months Ended June 30,
	2023			2022			2023			2022
Net (Loss) Income	$	(21.6	)	$	(1.4	)	$	248.6		$	227.9
Adjustments, pre-tax:
Fair value and timing adjustments		3.4			7.3			22.2			20.9
Acquisition activities		0.5			—			0.5			—
Income tax adjustments		(0.9	)		(1.8	)		(5.6	)		(1.1	)
Net Economic (Loss) Earnings	$	(18.6	)	$	4.1		$	265.7		$	247.7

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

	June 30,			September 30,			June 30,
	2023			2022			2022
Total Assets:
Gas Utility	$	8,283.2		$	8,042.8		$	7,854.7
Gas Marketing		316.6			638.7			595.5
Midstream		533.3			446.0			430.9
Other		2,134.1			2,449.2			2,222.0
Eliminations		(1,229.7	)		(1,493.0	)		(1,319.2	)
Total Assets	$	10,037.5		$	10,083.7		$	9,783.9

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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Millions	6 Months Ended	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022
Restricted Cash	$ 19.7	$ 19.7	$ 14.1	$ 14.0
Payments to Acquire Businesses, Gross	$ 37.0	$ 37.0	$ (0.0)

XML

Note 1 - Summary of Significant Accounting Policies - Transactions with Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Unregulated Operation [Member] | Spire S T L Pipeline L L C [Member] | Spire Missouri [Member]
Transportation services received from Spire STL Pipeline	$ 0.3	$ 0.0	$ 0.4	$ 0.0
Affiliated Entity [Member] | Regulated Operation [Member] | Spire Marketing [Member] | Spire Missouri [Member]
Purchases of natural gas from Spire Marketing	6.5	26.2	48.8	62.3
Affiliated Entity [Member] | Regulated Operation [Member] | Spire Marketing [Member] | Spire Alabama Inc [Member]
Purchases of natural gas from Spire Marketing	1.7	3.2	2.8	3.2
Affiliated Entity [Member] | Unregulated Operation [Member] | Spire S T L Pipeline L L C [Member] | Spire Missouri [Member]
Transportation services received from Spire STL Pipeline	$ 8.0	$ 8.0	$ 23.9	$ 23.9

XML

Note 1 - Summary of Significant Accounting Policies - Accrued Capital Expenditures Excluded from Capital Expenditures in the Statements of Cash Flows (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022
Accrued capital expenditures	$ 62.2	$ 52.6	$ 77.8
Spire Missouri [Member]
Accrued capital expenditures	33.4	39.2	45.6
Spire Alabama Inc [Member]
Accrued capital expenditures	$ 4.5	$ 7.7	$ 19.2

XML

Note 1 - Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions	6 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Allowance at beginning of period	$ 40.6	$ 35.1	$ 31.9	$ 30.3
Provision for expected credit losses	1.2	1.9	13.5	8.6
Write-offs, net of recoveries	(7.1)	(4.4)	(10.7)	(6.3)
Allowance at end of period	34.7	32.6	34.7	32.6
Spire Missouri [Member]
Allowance at beginning of period	34.5	27.0	24.9	22.6
Provision for expected credit losses	0.3	1.8	11.4	8.6
Write-offs, net of recoveries	(6.1)	(3.7)	(7.6)	(6.1)
Allowance at end of period	28.7	25.1	28.7	25.1
Spire Alabama Inc [Member]
Allowance at beginning of period	5.3	7.1	6.3	6.6
Provision for expected credit losses	0.8	0.0	1.5	0.0
Write-offs, net of recoveries	(0.8)	(0.5)	(2.5)	0.0
Allowance at end of period	$ 5.3	$ 6.6	$ 5.3	$ 6.6

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Note 2 - Revenue - Disaggregated of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating Revenues	$ 418.5	$ 448.0	$ 2,355.9	$ 1,884.3
Operating Segments [Member]
Operating Revenues			38.7
Consolidation, Eliminations [Member]
Operating Revenues	(14.1)	(12.2)		(38.8)
Gas Utility [Member] | Operating Segments [Member]
Operating Revenues	387.8	377.4	2,175.3	1,698.3
Gas Marketing [Member] | Operating Segments [Member]
Operating Revenues	23.1	64.1	157.8	171.4
Midstream [Member] | Operating Segments [Member]
Operating Revenues	17.4	14.6	49.1	41.3
Other Segments [Member]
Operating Revenues	4.3	4.1	12.4	12.1
Spire Missouri [Member]
Operating Revenues	253.8	236.7	1,586.0	1,155.8
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue	249.7	237.8	1,563.3	1,143.1
Changes in accrued revenue under alternative revenue programs	4.1	(1.1)	22.7	12.7
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue	171.7	171.1	1,142.3	947.3
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue	61.1	51.9	369.2	140.0
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue	7.1	7.1	26.1	26.4
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Incentive [Member]
Revenue	6.0	4.5	15.6	20.3
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue	3.8	3.2	10.1	9.1
Spire Alabama Inc [Member]
Operating Revenues	113.1	115.7	483.8	446.4
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue	111.3	104.7	483.9	436.1
Changes in accrued revenue under alternative revenue programs	1.8	11.0	(0.1)	10.3
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue	56.7	56.2	288.1	266.2
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue	32.7	24.0	127.8	101.6
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue	18.9	17.4	59.0	57.5
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Incentive [Member]
Revenue	2.2	5.6	6.3	6.6
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue	0.8	1.5	2.7	4.2
Spire [Member]
Operating Revenues	418.5	448.0	2,355.9	1,884.3
Spire [Member] | Operating Segments [Member]
Operating Revenues	432.6	460.2	2,394.6	1,923.1
Spire [Member] | Consolidation, Eliminations [Member]
Operating Revenues	(14.1)	(12.2)	(38.7)	(38.8)
Spire [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue	382.6	368.3	2,148.3	1,678.6
Changes in accrued revenue under alternative revenue programs	5.2	9.1	27.0	19.7
Total Gas Utility operating revenues	387.8	377.4	2,175.3	1,698.3
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue	238.1	239.5	1,486.3	1,268.8
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue	102.2	86.2	533.1	275.6
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue	29.0	26.9	93.2	91.6
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Incentive [Member]
Revenue	8.2	10.1	21.9	26.9
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue	5.1	5.6	13.8	15.7
Spire [Member] | Gas Marketing [Member] | Operating Segments [Member]
Unregulated Operating Revenue	23.1	64.1	157.8	171.4
Spire [Member] | Midstream [Member] | Operating Segments [Member]
Unregulated Operating Revenue	17.4	14.6	49.1	41.3
Spire [Member] | Other Segments [Member] | Operating Segments [Member]
Unregulated Operating Revenue	$ 4.3	$ 4.1	$ 12.4	$ 12.1

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Note 2 - Revenue - Taxes Associated with Natural Gas Utility Services (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Gross Receipts Tax Amounts	$ 26.0	$ 23.3	$ 116.6	$ 97.1
Spire Missouri [Member]
Gross Receipts Tax Amounts	18.9	16.7	86.6	70.6
Spire Alabama Inc [Member]
Gross Receipts Tax Amounts	$ 6.1	$ 5.5	$ 25.5	$ 22.5

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Note 3 - Earnings Per Common Share - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Income		$ (21.6)	$ (1.4)	$ 248.6	$ 227.9
Provision for preferred dividends		3.7	3.7	11.1	11.1
(Loss) income allocated to participating securities		(0.1)	0.0	0.4	0.3
(Loss) Income Available to Common Shareholders		$ (25.2)	$ (5.1)	$ 237.1	$ 216.5
Basic (in shares)		52.5	52.2	52.5	51.9
Basic (Loss) Earnings Per Common Share (in dollars per share)		$ (0.48)	$ (0.10)	$ 4.52	$ 4.17
Dilutive Effect of forward sales of common stock, restricted stock and restricted stock units (in millions)* (in shares)	[1]	0.0	0.0	0.1	0.1
Weighted Average Diluted Common Shares (in millions) (in shares)		52.5	52.2	52.6	52.0
Diluted (Loss) Earnings Per Common Share (in dollars per share)		$ (0.48)	$ (0.10)	$ 4.51	$ 4.16
* Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future (in shares)		2.7	0.2	2.5	0.2

[1] Calculation excludes certain outstanding or potential common shares (shown in millions by period at the right) attributable to (1) forward sales of common stock, (2) stock units subject to performance or market conditions, and (3) restricted stock, which could have a dilutive effect in the future

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Note 4 - Shareholders' Equity (Details Textual) - At The Market Program [Member] - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Apr. 28, 2022
Number of Shares Authorized for Issuance (in shares)	17,900,000		200,000,000.0
Forward Sales Agreements, Shares (in shares)	2,087,231	228,690
Forward Sales Agreements, Block Sales, Shares (in shares)	1,744,549
Forward Sales Agreements, Proceeds If Settled	$ 149.7

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Note 5 - Regulatory Matters (Details Textual) - USD ($) $ in Millions								1 Months Ended		3 Months Ended			9 Months Ended
	Jun. 30, 2023	Apr. 30, 2023	Apr. 20, 2023	Jan. 01, 2023	Nov. 18, 2022	Sep. 14, 2022	Dec. 23, 2021	Oct. 31, 2022	Feb. 28, 2021	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Apr. 28, 2023	Jan. 25, 2023	Sep. 30, 2022
Utilities Operating Expense, Gas and Petroleum Purchased										$ 169.8	$ 203.3		$ 1,175.5	$ 844.5
Missouri Public Service Commission [Member] | Infrastructure System Replacement Surcharge [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 47.3
Spire Missouri [Member]
Utilities Operating Expense, Gas and Petroleum Purchased									$ 195.8	105.5	94.7		887.9	538.8
Public Utilities, Reduced Revenue Accounts Receivable Cost Of Gas and Regulatory Liabilities												$ 150.0
Utilities Operating, Due From Other Parties												$ 42.0
Spire Missouri [Member] | Missouri Public Service Commission [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 78.0		72.2
Public Utilities, Requested Rate Increase (Decrease), Amount							$ 24.9
Public Utilities, Deferred Amount Under Order Authorizing Accounting Treatment																	$ 42.8
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue	$ 14.2		$ 7.7
Public Utilities, Disallowance From ACA Balance																$ 0.6
Public Utilities, Disallowance From ACA Balance Filed															$ 27.7
Spire Missouri [Member] | Missouri Public Service Commission [Member] | Infrastructure System Replacement Surcharge [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 19.0
Spire Alabama Inc [Member]
Utilities Operating Expense, Gas and Petroleum Purchased										$ 42.7	$ 41.0		$ 173.9	$ 138.6
Spire Alabama Inc [Member] | Alabama Public Service Commission [Member]
Annual Revenue Increase From Rates, Amount				$ 15.0
Spire Gulf [Member]
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue		$ 1.8						$ 2.5
Public Utilities, Approved Return on Equity, Percentage								9.95%
Spire Mississippi [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount						$ 1.3
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue				$ 0.8
Future Income Taxes Due From Customers and Pension and Other Postretirement Benefit Costs [Member]
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)	20 years									20 years			20 years
PGA Assets Not Earning A Return [Member]
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)	15 years									15 years			15 years

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Note 5 - Regulatory Matters - Regulatory Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Regulatory assets	$ 93.3	$ 355.4	$ 152.0
Regulatory Assets Noncurrent	1,421.2	1,112.4	1,205.6
Total Regulatory Assets	1,514.5	1,467.8	1,357.6
Regulatory Liability Current	5.5	3.7	3.2
Regulatory Liability Noncurrent	428.1	418.2	389.0
Total Regulatory Liabilities	433.6	421.9	392.2
Spire Missouri [Member]
Regulatory assets	35.0	288.1	89.9
Regulatory Assets Noncurrent	819.1	547.6	664.6
Total Regulatory Assets	854.1	835.7	754.5
Regulatory Liability Noncurrent	346.1	331.8	300.8
Total Regulatory Liabilities	346.1	331.8	300.8
Spire Alabama Inc [Member]
Regulatory assets	43.9	56.9	52.9
Regulatory Assets Noncurrent	576.7	538.2	514.1
Total Regulatory Assets	620.6	595.1	567.0
Regulatory Liability Noncurrent	20.8	23.0	24.0
Total Regulatory Liabilities	20.8	23.0	24.0
Unamortized Purchased Gas Adjustments Asset [Member]
Regulatory assets	66.2	322.2	123.4
Regulatory Assets Noncurrent	206.3	0.0	97.4
Regulatory Liability Current	0.0	53.0	0.0
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Missouri [Member]
Regulatory assets	32.9	275.1	89.7
Regulatory Assets Noncurrent	206.3	0.0	97.4
Regulatory Liability Current	0.0	53.0	0.0
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Alabama Inc [Member]
Regulatory assets	30.9	43.8	31.6
Other Regulatory Assets (Liabilities) [Member]
Regulatory assets	27.1	33.2	28.6
Regulatory Assets Noncurrent	152.3	129.2	124.3
Regulatory Liability Current	5.5	3.7	3.2
Regulatory Liability Noncurrent	23.3	14.4	14.6
Other Regulatory Assets (Liabilities) [Member] | Spire Missouri [Member]
Regulatory assets	2.1	13.0	0.2
Regulatory Assets Noncurrent	136.5	113.1	107.9
Regulatory Liability Current	17.8	7.3	7.7
Other Regulatory Assets (Liabilities) [Member] | Spire Alabama Inc [Member]
Regulatory assets	13.0	13.1	21.3
Regulatory Assets Noncurrent	1.0	1.0	1.1
Regulatory Liability Current	3.5	3.6	3.6
Pension and Other Postretirement Plans Costs [Member]
Regulatory assets	268.8	294.5	317.5
Regulatory Assets Noncurrent	165.3	172.6	185.0
Pension and Other Postretirement Plans Costs [Member] | Spire Missouri [Member]
Regulatory assets	193.4	222.9	238.5
Regulatory Assets Noncurrent	137.9	143.6	154.5
Pension and Other Postretirement Plans Costs [Member] | Spire Alabama Inc [Member]
Regulatory assets	71.1	66.5	73.8
Regulatory Assets Noncurrent	17.3	19.4	20.4
Deferred Income Tax Charge [Member]
Regulatory Assets Noncurrent	140.1	137.8	140.4
Deferred Income Tax Charge [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	131.8	129.2	131.8
Deferred Income Tax Charge [Member] | Spire Alabama Inc [Member]
Regulatory Assets Noncurrent	2.0	2.2	2.2
Removal Costs [Member]
Regulatory Assets Noncurrent	597.9	493.7	471.9
Regulatory Liability Noncurrent	107.7	32.9	40.7
Removal Costs [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	95.3	25.2	34.9
Regulatory Liability Noncurrent	72.3	0.0	7.3
Removal Costs [Member] | Spire Alabama Inc [Member]
Regulatory Assets Noncurrent	502.6	468.5	437.0
Renewable Energy Program [Member]
Regulatory Assets Noncurrent	55.8	57.2	54.1
Renewable Energy Program [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	55.8	57.2	54.1
Estimated Deferred Taxes Due to Customers [Member]
Regulatory Liability Noncurrent	131.8	145.3	148.7
Estimated Deferred Taxes Due to Customers [Member] | Spire Missouri [Member]
Regulatory Liability Noncurrent	$ 118.1	$ 127.9	$ 131.3

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Note 5 - Regulatory Matters - Regulatory Assets Not Earning a Return (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Regulatory assets not earning a return	$ 606.9	$ 686.3	$ 622.1
Spire Missouri [Member]
Regulatory assets not earning a return	600.7	679.9	615.7
Pension and Other Postretirement Plans Costs [Member]
Regulatory assets not earning a return	127.5	152.9	165.8
Pension and Other Postretirement Plans Costs [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	127.5	152.9	165.8
Deferred Income Tax Charge [Member]
Regulatory assets not earning a return	138.0	135.6	138.2
Deferred Income Tax Charge [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	131.8	129.2	131.8
Unamortized Purchased Gas Adjustments Asset [Member]
Regulatory assets not earning a return	239.2	275.1	187.2
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	239.2	275.1	187.2
Other Regulatory Assets (Liabilities) [Member]
Regulatory assets not earning a return	102.2	122.7	130.9
Other Regulatory Assets (Liabilities) [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	$ 102.2	$ 122.7	$ 130.9

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Note 6 - Financing (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Jan. 05, 2023	Mar. 31, 2023	Jun. 30, 2023	Mar. 07, 2023	Feb. 13, 2023	Oct. 13, 2022	Jul. 22, 2022
Interest Rate Swap [Member]
Derivative, Notional Amount, Settled		$ 325,000
Derivative, Gain (Loss) on Derivative, Net		$ 39,500
Commercial Paper [Member]
Short-term Borrowing, Maximum Aggregate Principal Amount							$ 1,300,000
Commercial Paper [Member] | Parent Company [Member]
Short Term Borrowings Used to Support Lending to Utilities			$ 375,200
Spire [Member] | Notes Due March 15 2033 [Member]
Debt Instrument, Interest Rate, Stated Percentage				5.80%
Long-Term Debt, Gross				$ 150,000
Spire Missouri [Member] | First Mortgage Bond Due 2033 [Member]
Debt Instrument, Interest Rate, Stated Percentage					4.80%
Long-Term Debt, Gross					$ 400,000
Spire Missouri [Member] | Unsecured Term Loan [Member]
Debt Instrument, Face Amount	$ 250,000
Debt Instrument, Interest Rate, Stated Percentage	0.10%
Spire Missouri [Member] | Unsecured Term Loan [Member] | London Interbank Offered Rate LIBOR 1 [Member]
Line of Credit Facility, Covenant, Percentage of Total Capitalization			65.00%
Debt Instrument, Basis Spread on Variable Rate	0.80%
Spire Gulf [Member] | Notes Due October 15, 2029 [Member]
Debt Instrument, Interest Rate, Stated Percentage						5.32%
Long-Term Debt, Gross						$ 90,000
Spire Gulf [Member] | Notes Due October 15, 2032 [Member]
Debt Instrument, Interest Rate, Stated Percentage						5.41%
Long-Term Debt, Gross						$ 85,000
Spire Gulf [Member] | First Mortgage Bonds Due October 15, 2037 [Member]
Debt Instrument, Interest Rate, Stated Percentage						5.61%
Long-Term Debt, Gross						$ 30,000
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity							1,300,000
Long-Term Line of Credit, Total			$ 0
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Covenant, Percentage of Total Capitalization			70.00%
Revolving Credit Facility [Member] | Spire [Member]
Line of Credit Facility, Maximum Borrowing Capacity							450,000
Revolving Credit Facility [Member] | Spire Missouri [Member]
Line of Credit Facility, Maximum Borrowing Capacity							575,000
Revolving Credit Facility [Member] | Spire Alabama Inc [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 275,000

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Note 6 - Financing - Short-term Borrowings (Details) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Highest borrowings outstanding	$ 1,482.0
Lowest borrowings outstanding	489.0
Weighted average borrowings	$ 868.1
Weighted average interest rate	4.80%
Borrowings outstanding	$ 557.6	$ 1,037.5	$ 709.2
Weighted average interest rate	5.50%	3.30%	2.00%
Spire Missouri [Member] | Term Loan [Member]
Highest borrowings outstanding	$ 250.0
Lowest borrowings outstanding	0.0
Weighted average borrowings	$ 89.4
Weighted average interest rate	5.50%
Borrowings outstanding	$ 0.0	$ 0.0	$ 0.0
Weighted average interest rate	0.00%
Spire Missouri [Member] | Spire Note [Member]
Highest borrowings outstanding	$ 656.9
Lowest borrowings outstanding	3.8
Weighted average borrowings	$ 308.9
Weighted average interest rate	4.60%
Borrowings outstanding	$ 228.1	$ 445.3	$ 285.4
Weighted average interest rate	5.50%	3.30%	2.00%
Spire Alabama Inc [Member] | Spire Note [Member]
Highest borrowings outstanding	$ 274.0
Lowest borrowings outstanding	76.7
Weighted average borrowings	$ 123.3
Weighted average interest rate	4.80%
Borrowings outstanding	$ 108.1	$ 260.9	$ 196.3
Weighted average interest rate	5.50%	3.30%	2.00%
Commercial Paper [Member] | Parent Company [Member]
Highest borrowings outstanding	$ 1,282.0
Lowest borrowings outstanding	354.4
Weighted average borrowings	$ 778.7
Weighted average interest rate	4.70%
Borrowings outstanding	$ 557.6	$ 1,037.5	$ 709.2
Weighted average interest rate	5.50%	3.30%	2.00%

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Note 6 - Financing - Capitalized Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest Paid Capitalized	$ 2.3	$ 1.1	$ 5.8	$ 3.2
Spire Missouri [Member]
Interest Paid Capitalized	1.0	0.2	2.1	0.3
Spire Alabama Inc [Member]
Interest Paid Capitalized	$ 0.5	$ 0.9	$ 1.8	$ 2.5

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Note 7 - Fair Value of Financial Instruments - Estimated Fair Value of Financial Instruments Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Reported Value Measurement [Member]
Cash and cash equivalents	$ 5.3	$ 6.5	$ 16.0
Notes payable	557.6	1,037.5	709.2
Long-term debt, including current portion	3,959.9	3,239.7	3,239.1
Reported Value Measurement [Member] | Spire Missouri [Member]
Cash and cash equivalents			7.0
Long-term debt, including current portion	2,035.1	1,637.7	1,637.4
Notes payable – associated companies	228.1	445.3	285.4
Reported Value Measurement [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	0.5
Long-term debt, including current portion	745.8	571.5	571.4
Notes payable – associated companies	108.1	260.9	196.3
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	5.3	6.5	16.0
Notes payable	557.6	1,037.5	709.2
Long-term debt, including current portion	3,650.7	2,851.8	3,032.1
Estimate of Fair Value Measurement [Member] | Spire Missouri [Member]
Cash and cash equivalents			7.0
Long-term debt, including current portion	1,890.2	1,473.9	1,562.4
Notes payable – associated companies	228.1	445.3	285.4
Estimate of Fair Value Measurement [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	0.5	2.4	3.7
Long-term debt, including current portion	681.5	485.0	527.2
Notes payable – associated companies	108.1	260.9	196.3
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	5.3	6.5	16.0
Notes payable	0.0	0.0	0.0
Long-term debt, including current portion	0.0	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Cash and cash equivalents			7.0
Long-term debt, including current portion	0.0	0.0	0.0
Notes payable – associated companies	0.0	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	0.5	2.4	3.7
Long-term debt, including current portion	0.0	0.0	0.0
Notes payable – associated companies	0.0	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0.0	0.0	0.0
Notes payable	557.6	1,037.5	709.2
Long-term debt, including current portion	3,650.7	2,851.8	3,032.1
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Cash and cash equivalents			0.0
Long-term debt, including current portion	1,890.2	1,473.9	1,562.4
Notes payable – associated companies	228.1	445.3	285.4
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	0.0	0.0	0.0
Long-term debt, including current portion	681.5	485.0	527.2
Notes payable – associated companies	$ 108.1	$ 260.9	$ 196.3

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Note 8 - Fair Value Measurements - Schedule of Derivative Assets and Liabilities, Including Receivables and Payables (Details) - Fair Value, Recurring [Member] - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Effects of netting, asset	$ (11.5)	$ (153.6)	$ (146.7)
Derivative Assets	110.4	164.6	149.3
Effects of netting, liability	(70.8)	(117.0)	(86.5)
Derivative Liabilities	34.7	61.5	113.0
Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	99.1	254.6	243.3
Derivative Liability Fair Value Gross Liability	104.7	178.5	191.9
Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset	22.8	63.6	52.7
Derivative Liability Fair Value Gross Liability	0.8	0.0	7.6
Spire Missouri [Member]
Effects of netting, asset		(57.8)	(39.6)
Derivative Assets		19.1	20.3
Effects of netting, liability	(45.5)
Derivative Liabilities	0.0
Spire Missouri [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset		76.9	59.9
Derivative Liability Fair Value Gross Liability	45.5
Spire Missouri [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset		0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0
U S Stock And Bond Mutual Funds [Member] | Gas Utility [Member]
Effects of netting, asset	0.0	0.0	0.0
Derivative Assets	21.4	19.1	20.3
U S Stock And Bond Mutual Funds [Member] | Other Segments [Member]
Effects of netting, asset	0.0	0.0	0.0
Derivative Assets	31.4	29.3	31.6
U S Stock And Bond Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	21.4	19.1	20.3
U S Stock And Bond Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	31.4	29.3	31.6
U S Stock And Bond Mutual Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Spire Missouri [Member]
Effects of netting, asset	0.0	0.0	0.0
Derivative Assets	21.4	19.1	20.3
U S Stock And Bond Mutual Funds [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	21.4	19.1	20.3
U S Stock And Bond Mutual Funds [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Gas Utility [Member]
Effects of netting, asset		(57.8)	(39.6)
Derivative Assets	0.0	0.0	0.0
Effects of netting, liability	(44.8)	(30.7)	(12.8)
Derivative Liabilities		0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Gas Marketing [Member]
Effects of netting, asset	(10.5)	(91.8)	(94.2)
Derivative Assets	0.0	0.0	0.0
Effects of netting, liability	(24.3)	(82.3)	(60.8)
Derivative Liabilities	0.0	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset		57.8	39.6
Derivative Liability Fair Value Gross Liability	44.8	30.7	12.8
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	10.5	91.8	94.2
Derivative Liability Fair Value Gross Liability	24.3	82.3	60.8
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset		0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Spire Missouri [Member]
Effects of netting, asset		(57.8)	(39.6)
Derivative Assets		0.0	0.0
Effects of netting, liability	(44.8)	(30.7)	(12.8)
Derivative Liabilities	0.0	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset		57.8	39.6
Derivative Liability Fair Value Gross Liability	44.8	30.7	12.8
N Y M E X I C E Natural Gas Contracts [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset		0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0	0.0
Gasoline And Heating Oil Contracts [Member] | Gas Utility [Member]
Derivative Assets	0.0
Effects of netting, liability	(0.7)
Gasoline And Heating Oil Contracts [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Utility [Member]
Derivative Liability Fair Value Gross Liability	0.7
Gasoline And Heating Oil Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Utility [Member]
Derivative Liability Fair Value Gross Liability	0.0
Gasoline And Heating Oil Contracts [Member] | Spire Missouri [Member]
Effects of netting, liability	(0.7)
Derivative Liabilities	0.0
Gasoline And Heating Oil Contracts [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Liability Fair Value Gross Liability	0.7
Gasoline And Heating Oil Contracts [Member] | Spire Missouri [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Liability Fair Value Gross Liability	0.0
Natural Gas Commodity Contracts [Member] | Gas Marketing [Member]
Effects of netting, asset	(1.0)	(4.0)	(5.3)
Derivative Assets	34.8	52.6	52.3
Effects of netting, liability	(1.0)	(4.0)	(5.3)
Derivative Liabilities	33.9	61.5	113.0
Natural Gas Commodity Contracts [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	35.8	56.6	57.6
Derivative Liability Fair Value Gross Liability	34.9	65.5	118.3
Natural Gas Commodity Contracts [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0	0.0
Interest Rate Swap [Member]
Effects of netting, asset			(7.6)
Derivative Assets			45.1
Interest Rate Swap [Member] | Other Segments [Member]
Effects of netting, asset	0.0	0.0
Derivative Assets	22.8	63.6
Effects of netting, liability	0.0		(7.6)
Derivative Liabilities	0.8		0.0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset			0.0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 1 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0		0.0
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset			52.7
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	22.8	$ 63.6
Derivative Liability Fair Value Gross Liability	$ 0.8		$ 7.6

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Note 9 - Pension Plans and Other Postretirement Benefits (Details Textual) - USD ($) $ in Thousands				3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 26, 2022	Dec. 23, 2021	Dec. 22, 2021	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Feb. 28, 2022	Sep. 30, 2021
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement							$ 0			$ 0
Regulatory Asset, Total				$ 1,514,500		$ 1,357,600				1,514,500	$ 1,357,600		$ 1,467,800
Regulatory Liability				433,600		392,200				433,600	392,200		421,900
Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(0)		(17,800)				(8,600)	(29,500)
Spire Alabama Inc [Member]
Regulatory Asset, Total				620,600		567,000				620,600	567,000		595,100
Regulatory Liability				20,800		24,000				20,800	24,000		$ 23,000
Spire Alabama Inc [Member] | Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement					$ 27,500	3,600			$ 17,400
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(0)	$ (8,600)	$ (500)			$ (4,900)	(8,600)	$ (5,400)
Defined Benefit Plan, Plan Assets, Contributions by Employer				25,000
Spire Alabama Inc [Member] | Pension Plan One [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate						13.00%		12.30%			13.00%				3.60%
Defined Benefit Plan, Benefit Obligation, Settlement Losses Amortized Over Remaining Actuarial Life (Year)												13 years 4 months 24 days
Spire Alabama Inc [Member] | Pension Plan Two [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate						11.10%	3.10%		3.10%		11.10%		5.65%	3.60%	3.00%
Defined Benefit Plan, Benefit Obligation, Settlement Losses Amortized Over Remaining Actuarial Life (Year)								12 years 7 months 6 days				12 years 4 months 24 days
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer											$ 0
Anticipated Contributions to Pension Plans Qualified Trusts											0
Spire Missouri [Member]
Regulatory Asset, Total				854,100		$ 754,500				854,100	754,500		$ 835,700
Regulatory Liability				346,100		300,800				346,100	300,800		$ 331,800
Spire Missouri [Member] | Pension Costs [Member] | Missouri West [Member]
Regulatory Asset, Total		$ 4,400	$ 5,500
Spire Missouri [Member] | Pension Costs [Member] | Missouri East [Member]
Regulatory Asset, Total	$ 29,900	32,400	29,000
Spire Missouri [Member] | Pension and Other Postretirement Plans Costs [Member] | Missouri West [Member]
Regulatory Liabilities For Which No Return On Investment During Recovery Period Is Provided	800	$ 1,100	$ 3,300
Remaining Recovery Period of Regulatory Liabilities for which No Return on Investment During Recovery Period is Provided (Year)		8 years	8 years
Spire Missouri [Member] | Pension and Other Postretirement Plans Costs [Member] | Missouri East [Member]
Regulatory Assets for Which No Return on Investment During Recovery Period Is Provided	6,900	$ 11,000	$ 21,600
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)			8 years
Additional Remaining Recovery Period of Regulatory Assets for Which No Return on Investment During Recovery Period Is Provided (Year)		8 years
Spire Missouri [Member] | Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement						47,400			$ 21,600
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(0)		$ (17,300)			$ (6,800)	(0)	$ (24,100)
Anticipated Contributions to Pension Plans Qualified Trusts				$ 2,800
Spire Missouri [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer										29,700
Spire Missouri [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer										$ 0
Spire Missouri [Member] | Pension Plan One [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate					5.60%	4.55%	3.60%		3.60%		4.55%		5.70%	3.60%	3.00%
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member]
Postretirement Benefit Plans, Recovery in Rates Base Allowance		$ 8,600
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member] | Missouri West [Member]
Regulatory Liability	100
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member] | Missouri East [Member]
Regulatory Liability	$ 900

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Note 9 - Pension Plans and Other Postretirement Benefits - Net Pension Costs (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Pension Plan [Member]
Service cost – benefits earned during the period	$ 4.2		$ 4.8		$ 12.2	$ 15.6
Interest cost on projected benefit obligation	6.6		5.4		18.9	15.8
Expected return on plan assets	(6.4)		(7.7)		(18.5)	(24.1)
Amortization of prior service credit	(1.1)		(1.1)		(3.4)	(3.4)
Amortization of actuarial loss	1.5		2.5		4.7	9.8
Loss on lump-sum settlements	0.0		17.8		8.6	29.5
Subtotal	4.8		21.7		22.5	43.2
Regulatory adjustment	6.1		(6.9)		18.3	2.5
Net pension cost	10.9		14.8		40.8	45.7
Net postretirement benefit income	10.9		14.8		40.8	45.7
Pension Plan [Member] | Spire Missouri [Member]
Service cost – benefits earned during the period	2.8		3.5		8.5	11.2
Interest cost on projected benefit obligation	4.5		3.8		13.4	10.9
Expected return on plan assets	(4.5)		(5.7)		(13.5)	(17.6)
Amortization of prior service credit	(0.5)		(0.5)		(1.5)	(1.5)
Amortization of actuarial loss	1.5		2.0		4.6	7.6
Loss on lump-sum settlements	0.0		17.3	$ 6.8	0.0	24.1
Subtotal	3.8		20.4		11.5	34.7
Regulatory adjustment	3.4		(8.3)		19.6	1.3
Net pension cost	7.2		12.1		31.1	36.0
Net postretirement benefit income	7.2		12.1		31.1	36.0
Pension Plan [Member] | Spire Alabama Inc [Member]
Service cost – benefits earned during the period	1.3		1.1		3.2	3.8
Interest cost on projected benefit obligation	1.5		1.1		3.6	3.4
Expected return on plan assets	(1.1)		(1.2)		(2.7)	(4.0)
Amortization of prior service credit	(0.6)		(0.6)		(1.8)	(1.8)
Amortization of actuarial loss	0.1		0.5		0.4	2.2
Loss on lump-sum settlements	0.0	$ 8.6	0.5	$ 4.9	8.6	5.4
Subtotal	1.2		1.4		11.3	9.0
Regulatory adjustment	2.4		1.1		(2.0)	0.5
Net pension cost	3.6		2.5		9.3	9.5
Net postretirement benefit income	3.6		2.5		9.3	9.5
Other Postretirement Benefits Plan [Member]
Service cost – benefits earned during the period	1.2		1.9		3.6	5.8
Interest cost on projected benefit obligation	2.0		1.6		6.3	4.6
Expected return on plan assets	(4.0)		(4.3)		(11.8)	(12.8)
Amortization of prior service credit	0.1		0.3		0.2	0.8
Amortization of actuarial loss	(0.9)		(0.5)		(3.0)	(1.7)
Subtotal	(1.6)		(1.0)		(4.7)	(3.3)
Regulatory adjustment	(0.5)		(0.1)		(0.2)	3.2
Net pension cost	(2.1)		(1.1)		(4.9)	(0.1)
Net postretirement benefit income	(2.1)		(1.1)		(4.9)	(0.1)
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Service cost – benefits earned during the period	1.0		1.6		3.0	4.8
Interest cost on projected benefit obligation	1.6		1.2		4.9	3.4
Expected return on plan assets	(2.6)		(2.9)		(7.9)	(8.6)
Amortization of prior service credit	0.1		0.2		0.4	0.6
Amortization of actuarial loss	(0.8)		(0.5)		(2.4)	(1.5)
Subtotal	(0.7)		(0.4)		(2.0)	(1.3)
Regulatory adjustment	(0.2)		0.4		1.1	4.5
Net pension cost	(0.9)		0.0		(0.9)	3.2
Net postretirement benefit income	(0.9)		0.0		(0.9)	3.2
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Service cost – benefits earned during the period	0.2		0.3		0.5	0.9
Interest cost on projected benefit obligation	0.4		0.4		1.3	1.1
Expected return on plan assets	(1.3)		(1.3)		(3.8)	(3.9)
Amortization of prior service credit	0.0		0.1		(0.2)	0.2
Amortization of actuarial loss	(0.1)		0.0		(0.4)	0.0
Subtotal	(0.8)		(0.5)		(2.6)	(1.7)
Regulatory adjustment	(0.5)		(0.5)		(1.4)	(1.4)
Net pension cost	(1.3)		(1.0)		(4.0)	(3.1)
Net postretirement benefit income	$ (1.3)		$ (1.0)		$ (4.0)	$ (3.1)

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Note 10 - Information by Operating Segment (Details Textual)	3 Months Ended
	Jun. 30, 2023
Number of Reportable Segments	3

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Note 10 - Information by Operating Segment - Segment Information by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues from external customers	$ 418.5	$ 448.0	$ 2,355.9	$ 1,884.3
Intersegment revenues	0.0	0.0	0.0	0.0
Operating Revenues	418.5	448.0	2,355.9	1,884.3
Natural gas	169.8	203.3	1,175.5	844.5
Operation and maintenance	125.5	102.3	389.7	331.9
Depreciation and amortization	64.3	60.4	189.0	176.2
Taxes, other than income taxes	46.9	44.1	179.2	153.3
Total Operating Expenses	406.5	410.1	1,933.4	1,505.9
Operating Income (Loss)	12.0	37.9	422.5	378.4
Net Economic (Loss) Earnings	(18.6)	4.1	265.7	247.7
Other Segments [Member]
Revenues from external customers	0.2	0.2	0.5	0.5
Intersegment revenues	4.1	3.9	11.9	11.6
Operating Revenues	4.3	4.1	12.4	12.1
Natural gas	0.0	0.0	0.0	0.0
Operation and maintenance	5.5	3.2	14.4	11.6
Depreciation and amortization	0.2	0.2	0.4	0.4
Taxes, other than income taxes	(0.1)	0.1	0.0	0.1
Total Operating Expenses	5.6	3.5	14.8	12.1
Operating Income (Loss)	(1.3)	0.6	(2.4)	0.0
Net Economic (Loss) Earnings	(7.4)	(4.8)	(25.4)	(18.0)
Operating Segments [Member]
Revenues from external customers			0.0
Intersegment revenues			38.7
Operating Revenues			38.7
Natural gas			26.8
Operation and maintenance			11.9
Depreciation and amortization			0.0
Taxes, other than income taxes			0.0
Total Operating Expenses			38.7
Operating Income (Loss)			0.0
Net Economic (Loss) Earnings			0.0
Operating Segments [Member] | Gas Utility [Member]
Revenues from external customers	387.5	377.4	2,174.9	1,698.3
Intersegment revenues	0.3	0.0	0.4	0.0
Operating Revenues	387.8	377.4	2,175.3	1,698.3
Natural gas	154.6	144.5	1,099.5	710.7
Operation and maintenance	111.7	95.0	350.9	306.5
Depreciation and amortization	61.7	58.1	181.6	169.2
Taxes, other than income taxes	45.9	43.0	176.2	150.3
Total Operating Expenses	373.9	340.6	1,808.2	1,336.7
Operating Income (Loss)	13.9	36.8	367.1	361.6
Net Economic (Loss) Earnings	(12.3)	4.2	234.5	240.6
Operating Segments [Member] | Gas Marketing [Member]
Revenues from external customers	23.1	64.1	157.8	171.4
Intersegment revenues	0.0	0.0	0.0	0.0
Operating Revenues	23.1	64.1	157.8	171.4
Natural gas	25.3	67.1	102.8	160.9
Operation and maintenance	4.2	3.2	16.2	9.1
Depreciation and amortization	0.3	0.3	1.0	1.0
Taxes, other than income taxes	0.4	0.4	1.1	0.8
Total Operating Expenses	30.2	71.0	121.1	171.8
Operating Income (Loss)	(7.1)	(6.9)	36.7	(0.4)
Net Economic (Loss) Earnings	(2.5)	0.4	45.0	15.3
Operating Segments [Member] | Midstream [Member]
Revenues from external customers	7.7	6.3	22.7	14.1
Intersegment revenues	9.7	8.3	26.4	27.2
Operating Revenues	17.4	14.6	49.1	41.3
Natural gas	0.0	0.0	0.0	0.0
Operation and maintenance	8.1	4.8	20.1	16.4
Depreciation and amortization	2.1	1.8	6.0	5.6
Taxes, other than income taxes	0.7	0.6	1.9	2.1
Total Operating Expenses	10.9	7.2	28.0	24.1
Operating Income (Loss)	6.5	7.4	21.1	17.2
Net Economic (Loss) Earnings	3.6	4.3	$ 11.6	9.8
Consolidation, Eliminations [Member]
Revenues from external customers	0.0	0.0		0.0
Intersegment revenues	(14.1)	(12.2)		(38.8)
Operating Revenues	(14.1)	(12.2)		(38.8)
Natural gas	(10.1)	(8.3)		(27.1)
Operation and maintenance	(4.0)	(3.9)		(11.7)
Depreciation and amortization	0.0	0.0		0.0
Taxes, other than income taxes	0.0	0.0		0.0
Total Operating Expenses	(14.1)	(12.2)		(38.8)
Operating Income (Loss)	0.0	0.0		0.0
Net Economic (Loss) Earnings	$ 0.0	$ 0.0		$ 0.0

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Note 10 - Information by Operating Segment - Net Economic Earnings to Net Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues from external customers	$ 418.5	$ 448.0	$ 2,355.9	$ 1,884.3
Intersegment revenues	0.0	0.0	0.0	0.0
Intersegment revenues	0.0	0.0	0.0	0.0
Operating Revenues	418.5	448.0	2,355.9	1,884.3
Total Operating Revenues	(418.5)	(448.0)	(2,355.9)	(1,884.3)
Natural gas	169.8	203.3	1,175.5	844.5
Natural gas	(169.8)	(203.3)	(1,175.5)	(844.5)
Operation and maintenance	125.5	102.3	389.7	331.9
Operation and maintenance	(125.5)	(102.3)	(389.7)	(331.9)
Depreciation and amortization	64.3	60.4	189.0	176.2
Taxes, other than income taxes	46.9	44.1	179.2	153.3
Total Operating Expenses	406.5	410.1	1,933.4	1,505.9
Total Operating Expenses	(406.5)	(410.1)	(1,933.4)	(1,505.9)
Operating Income (Loss)	12.0	37.9	422.5	378.4
Net Economic (Loss) Earnings	(18.6)	4.1	265.7	247.7
Net Income	(21.6)	(1.4)	248.6	227.9
Fair value and timing adjustments	3.4	7.3	22.2	20.9
Acquisition activities	0.5	0.0	0.5	0.0
Income tax adjustments	(0.9)	(1.8)	(5.6)	(1.1)
Net Economic (Loss) Earnings	(18.6)	4.1	265.7	247.7
Other Segments [Member]
Revenues from external customers	0.2	0.2	0.5	0.5
Intersegment revenues	4.1	3.9	11.9	11.6
Intersegment revenues	(4.1)	(3.9)	(11.9)	(11.6)
Operating Revenues	4.3	4.1	12.4	12.1
Total Operating Revenues	(4.3)	(4.1)	(12.4)	(12.1)
Natural gas	0.0	0.0	0.0	0.0
Natural gas	0.0	0.0	0.0	0.0
Operation and maintenance	5.5	3.2	14.4	11.6
Operation and maintenance	(5.5)	(3.2)	(14.4)	(11.6)
Depreciation and amortization	0.2	0.2	0.4	0.4
Taxes, other than income taxes	(0.1)	0.1	0.0	0.1
Total Operating Expenses	5.6	3.5	14.8	12.1
Total Operating Expenses	(5.6)	(3.5)	(14.8)	(12.1)
Operating Income (Loss)	(1.3)	0.6	(2.4)	0.0
Net Economic (Loss) Earnings	(7.4)	(4.8)	(25.4)	(18.0)
Net Economic (Loss) Earnings	(7.4)	(4.8)	(25.4)	(18.0)
Operating Segments [Member]
Revenues from external customers			0.0
Intersegment revenues			38.7
Intersegment revenues			(38.7)
Operating Revenues			38.7
Total Operating Revenues			(38.7)
Natural gas			26.8
Natural gas			(26.8)
Operation and maintenance			11.9
Operation and maintenance			(11.9)
Depreciation and amortization			0.0
Taxes, other than income taxes			0.0
Total Operating Expenses			38.7
Total Operating Expenses			(38.7)
Operating Income (Loss)			0.0
Net Economic (Loss) Earnings			0.0
Net Economic (Loss) Earnings			0.0
Operating Segments [Member] | Gas Utility [Member]
Revenues from external customers	387.5	377.4	2,174.9	1,698.3
Intersegment revenues	0.3	0.0	0.4	0.0
Intersegment revenues	(0.3)	0.0	(0.4)	0.0
Operating Revenues	387.8	377.4	2,175.3	1,698.3
Total Operating Revenues	(387.8)	(377.4)	(2,175.3)	(1,698.3)
Natural gas	154.6	144.5	1,099.5	710.7
Natural gas	(154.6)	(144.5)	(1,099.5)	(710.7)
Operation and maintenance	111.7	95.0	350.9	306.5
Operation and maintenance	(111.7)	(95.0)	(350.9)	(306.5)
Depreciation and amortization	61.7	58.1	181.6	169.2
Taxes, other than income taxes	45.9	43.0	176.2	150.3
Total Operating Expenses	373.9	340.6	1,808.2	1,336.7
Total Operating Expenses	(373.9)	(340.6)	(1,808.2)	(1,336.7)
Operating Income (Loss)	13.9	36.8	367.1	361.6
Net Economic (Loss) Earnings	(12.3)	4.2	234.5	240.6
Net Economic (Loss) Earnings	(12.3)	4.2	234.5	240.6
Operating Segments [Member] | Gas Marketing [Member]
Revenues from external customers	23.1	64.1	157.8	171.4
Intersegment revenues	0.0	0.0	0.0	0.0
Intersegment revenues	0.0	0.0	0.0	0.0
Operating Revenues	23.1	64.1	157.8	171.4
Total Operating Revenues	(23.1)	(64.1)	(157.8)	(171.4)
Natural gas	25.3	67.1	102.8	160.9
Natural gas	(25.3)	(67.1)	(102.8)	(160.9)
Operation and maintenance	4.2	3.2	16.2	9.1
Operation and maintenance	(4.2)	(3.2)	(16.2)	(9.1)
Depreciation and amortization	0.3	0.3	1.0	1.0
Taxes, other than income taxes	0.4	0.4	1.1	0.8
Total Operating Expenses	30.2	71.0	121.1	171.8
Total Operating Expenses	(30.2)	(71.0)	(121.1)	(171.8)
Operating Income (Loss)	(7.1)	(6.9)	36.7	(0.4)
Net Economic (Loss) Earnings	(2.5)	0.4	45.0	15.3
Net Economic (Loss) Earnings	(2.5)	0.4	45.0	15.3
Operating Segments [Member] | Midstream [Member]
Revenues from external customers	7.7	6.3	22.7	14.1
Intersegment revenues	9.7	8.3	26.4	27.2
Intersegment revenues	(9.7)	(8.3)	(26.4)	(27.2)
Operating Revenues	17.4	14.6	49.1	41.3
Total Operating Revenues	(17.4)	(14.6)	(49.1)	(41.3)
Natural gas	0.0	0.0	0.0	0.0
Natural gas	0.0	0.0	0.0	0.0
Operation and maintenance	8.1	4.8	20.1	16.4
Operation and maintenance	(8.1)	(4.8)	(20.1)	(16.4)
Depreciation and amortization	2.1	1.8	6.0	5.6
Taxes, other than income taxes	0.7	0.6	1.9	2.1
Total Operating Expenses	10.9	7.2	28.0	24.1
Total Operating Expenses	(10.9)	(7.2)	(28.0)	(24.1)
Operating Income (Loss)	6.5	7.4	21.1	17.2
Net Economic (Loss) Earnings	3.6	4.3	11.6	9.8
Net Economic (Loss) Earnings	$ 3.6	$ 4.3	$ 11.6	$ 9.8

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Note 10 - Information by Operating Segment - Total Assets by Segment (Details) - USD ($) $ in Millions	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022
Total Assets	$ 10,037.5	$ 10,083.7	$ 9,783.9
Operating Segments [Member] | Gas Utility [Member]
Total Assets	8,283.2	8,042.8	7,854.7
Operating Segments [Member] | Gas Marketing [Member]
Total Assets	316.6	638.7	595.5
Operating Segments [Member] | Midstream [Member]
Total Assets	533.3	446.0	430.9
Operating Segments [Member] | Other Segments [Member]
Total Assets	2,134.1	2,449.2	2,222.0
Consolidation, Eliminations [Member]
Total Assets	$ (1,229.7)	$ (1,493.0)	$ (1,319.2)

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Note 11 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
	May 31, 2023	Jun. 30, 2023
Long-Term Purchase Commitment, Amount		$ 1,780.5
Capital Committed to Contribute to Partnership		10.0
Remaining Unfunded Capital Commitment		7.2
MoGas Pipeline and Omega Pipeline [Member]
Business Combination, Price of Acquisition, Expected	$ 175.0
Spire Missouri [Member]
Long-Term Purchase Commitment, Amount		1,351.8
Spire Alabama Inc [Member]
Long-Term Purchase Commitment, Amount		$ 255.8

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Item 5 - Other Information (Details Textual)	3 Months Ended
	Jun. 30, 2023
Issuer Rule 10b5-1, Arrangement Adopted [Flag]	False
Issuer Rule 10b5-1 Arrangement Terminated [Flag]	False