10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 10-K

(Mark One)

☒ ANNUAL REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2022

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 to 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

Securities registered pursuant to Section 12(g) of the Exchange Act: None

Indicate by check mark whether each registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act of 1933, as amended.

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

Indicate by check mark if each registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.

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

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 reports), 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, 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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

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 aggregate market value of the common equity held by non-affiliates of Spire Inc. amounted to $3,627,663,025 as of March 31, 2022. All of Spire Missouri Inc.’s and Spire Alabama Inc.’s equity securities are owned by Spire Inc., their parent company and a reporting company under the Exchange Act.

The number of shares outstanding of each registrant’s common stock as of November 11, 2022, was as follows:

Spire Inc.	Common Stock, par value $1.00 per share	52,499,844
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

This combined Form 10-K 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. is also attributed to Spire Inc.

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

DOCUMENTS INCORPORATED BY REFERENCE

Portions of proxy statement for Spire Inc. to be filed on or about December 14, 2022 — Part III.

Certain exhibits as indicated in Part IV.

TABLE OF CONTENTS

		Page
GLOSSARY OF KEY TERMS AND ABBREVIATIONS		2
PART I		3
FORWARD-LOOKING STATEMENTS		3
Item 1	Business	4
Item 1A	Risk Factors	11
Item 1B	Unresolved Staff Comments	23
Item 2	Properties	24
Item 3	Legal Proceedings	24
Item 4	Mine Safety Disclosures	24
Information about our Executive Officers (Item 401(b) of Regulation S-K)		25
PART II		26
Item 5	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	26
Item 6	(Reserved)	27
Item 7	Management’s Discussion and Analysis of Financial Condition and Results of Operations	28
Item 7A	Quantitative and Qualitative Disclosures About Market Risk	46
Item 8	Financial Statements and Supplementary Data	47
Item 9	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	127
Item 9A	Controls and Procedures	127
Item 9B	Other Information	128
Item 9C	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	128
PART III		128
Item 10	Directors, Executive Officers and Corporate Governance	128
Item 11	Executive Compensation	128
Item 12	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	128
Item 13	Certain Relationships and Related Transactions, and Director Independence	128
Item 14	Principal Accounting Fees and Services	128
PART IV		129
Item 15	Exhibits, Financial Statement Schedules	129
Item 16	Form 10-K Summary	134
SIGNATURES		135

1

GLOSSARY OF KEY TERMS AND ABBREVIATIONS

AOCI	Accumulated other comprehensive income or loss	NYMEX	New York Mercantile Exchange, Inc.
APSC	Alabama Public Service Commission	NYSE	New York Stock Exchange
ASC	Accounting Standards Codification	O&M	Operation and maintenance expense
ASU	Accounting Standards Update	OCI	Other comprehensive income or loss
CCF	A gas measurement which represents a unit of volume equal to one hundred cubic feet	OFO	Operational Flow Order
CCM	Cost Control Measure	PGA	Purchased Gas Adjustment
Company	Spire and its subsidiaries unless the context suggests otherwise	RSE	Rate Stabilization and Equalization
COVID-19	Coronavirus disease 2019	SEC	U.S. Securities and Exchange Commission
EPS	Earnings per share	Spire	Spire Inc.
ESR	Enhanced Stability Reserve	Spire Alabama	Spire Alabama Inc.
FASB	Financial Accounting Standards Board	Spire EnergySouth	Spire EnergySouth Inc., parent of Spire Gulf and Spire Mississippi
FERC	Federal Energy Regulatory Commission	Spire Gulf	Spire Gulf Inc.
GAAP	Accounting principles generally accepted in the United States of America	Spire Marketing	Spire Marketing Inc.
Gas Marketing	Segment including Spire Marketing, which provides natural gas marketing services	Spire Mississippi	Spire Mississippi Inc.
Gas Utility	Segment including the operations of the Utilities	Spire Missouri	Spire Missouri Inc.
GSA	Gas Supply Adjustment	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
ICE	Intercontinental Exchange	Spire Storage	The physical natural gas storage operations of Spire Storage West LLC
ISRS	Infrastructure System Replacement Surcharge	U.S.	United States
MMBtu	Million British thermal units	Utilities	Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth
MoPSC	Missouri Public Service Commission
MSPSC	Mississippi Public Service Commission

2

PART I

FORWARD-LOOKING STATEMENTS

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 (including as a result of a failure of the Spire STL Pipeline to secure permanent authorization from the FERC), 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;

•  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 obligations;

•  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.

Readers are urged to consider the risks, uncertainties, and other factors that could affect our business as described in this report. All forward-looking statements made in this report rely upon the safe harbor protections provided under the Private Securities Litigation Reform Act of 1995. We do not, by including this statement, assume any obligation to review or revise any particular forward-looking statement in light of future events.

3

Item 1. Business

OVERVIEW

Spire Inc. (“Spire”) was formed in 2000 and is the holding company for Spire Missouri Inc. (“Spire Missouri”), Spire Alabama Inc. (“Spire Alabama”), other gas utilities, and gas-related businesses. Spire Missouri was formed in 1857 and Spire Alabama was formed in 1948 by the merger of two gas companies. Spire is committed to transforming its business and pursuing growth through growing organically, investing in infrastructure, and advancing through innovation. The Company has two key business segments: Gas Utility and Gas Marketing.

The Gas Utility segment includes the regulated operations of Spire Missouri, Spire Alabama, Spire Gulf Inc. (“Spire Gulf”) and Spire Mississippi Inc. (“Spire Mississippi”) (collectively, the “Utilities”). The business of the Utilities is subject to seasonal fluctuations with the peak period occurring in the winter heating season, typically November through April of each fiscal year. Spire Missouri is a public utility engaged in the purchase, retail distribution and sale of natural gas, with primary offices located in St. Louis, Missouri. Spire Missouri is the largest natural gas distribution utility system in Missouri, serving approximately 1.2 million residential, commercial and industrial customers in St. Louis, Kansas City, and other areas in Missouri. Spire Alabama is a public utility engaged in the purchase, retail distribution and sale of natural gas principally in central and northern Alabama, serving more than 0.4 million residential, commercial and industrial customers with primary offices located in Birmingham, Alabama. Spire Gulf and Spire Mississippi are utilities engaged in the purchase, retail distribution and sale of natural gas to 0.1 million customers in the Mobile, Alabama area and south-central Mississippi.

The Gas Marketing segment includes Spire Marketing Inc. (“Spire Marketing”), a wholly owned subsidiary providing natural gas marketing services.

As of September 30, 2022, Spire had 3,584 employees, including 2,347 for Spire Missouri and 1,009 for Spire Alabama. We believe that:

1. the safety and well-being of our employees is one of our most important responsibilities,

2. the development, education and advancement of employees is key to our sustainability, and

3. embracing an inclusive workforce full of diverse backgrounds and perspectives drives innovation.

We continue to implement processes, procedures and programs that have helped us reduce our employee injury rate for the eighth fiscal year in a row, marking a 21% year-over-year improvement and an overall improvement of 67% since fiscal year 2015. We offer incentives for weight management and gym membership, as well as employee assistance programs to provide counseling services and emotional support, and we have a formalized comprehensive well-being program that focuses on the physical, emotional, social and financial health of every employee.

All employees have access to developmental assessments, customized training, specialized degree programs, and partnerships with best-in-class organizations related to industry courses, leadership and management workshops and computer application development seminars. In addition, all employees are eligible for up to $6,000 per year in tuition assistance and have access to the Spire Learning Center, our robust internal learning management system. In their first year, construction and maintenance employees and service employees receive 160–200 hours of technical and safety training. Field operations employees average 40 hours annually of training and Operator Qualification instruction.

We regularly review and adjust our affirmative action plans based on placement and utilization rates, and we strive to create an even more diverse and inclusive work environment by committing to and achieving the goals of the CEO Action for Diversity & Inclusion Pledge. Our Human Rights Policy demonstrates that Spire understands its universal responsibility to respect human rights and provides the basis for publicly affirming our values and embedding the responsibility into Spire’s operations and the way we do business.

4

Spire uses its website, SpireEnergy.com, as its primary channel for distribution of important information including news releases, analyst presentations and financial information. The information Spire, Spire Missouri and Spire Alabama file or furnish to the United States (U.S.) Securities and Exchange Commission (SEC), including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and their amendments, and proxy statements are available free of charge under “Filings & reports” in the Investors section of Spire’s website, SpireEnergy.com, as soon as reasonably practical after the information is filed with or furnished to the SEC. Information contained on Spire’s website is not incorporated by reference in this report. The SEC also maintains a website that contains Spire’s SEC filings (sec.gov).

GAS UTILITY

Natural Gas Supply

The Utilities’ fundamental gas supply strategy is to meet the two-fold objective of 1) ensuring a dependable gas supply is available for delivery when needed and 2) insofar as is compatible with that dependability, purchasing gas that is economically priced. In structuring their natural gas supply portfolio, the Utilities focus on natural gas assets that are strategically positioned to meet the Utilities’ primary objectives.

Spire Missouri focuses its gas supply portfolio around a number of large natural gas suppliers with equity ownership or control of assets strategically situated to complement its regionally diverse firm transportation arrangements. Spire Missouri utilizes Midcontinent, Gulf Coast, Northeast, and Rocky Mountain gas sources to provide a level of supply diversity that facilitates the optimization of pricing differentials as well as protecting against the potential of regional supply disruptions. Further, Spire STL Pipeline LLC (“Spire STL Pipeline”), a wholly owned subsidiary of Spire, may deliver up to 400,000 million British thermal units (MMBtu) per day of natural gas into eastern Missouri, of which Spire Missouri is the foundation shipper with a contractual commitment of 350,000 MMBtu per day. See related discussion under the caption “—The Utilities’ ability to meet their customers’ natural gas requirements may be impaired if contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner” under Item 1A, Risk Factors, and in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

In fiscal year 2022, Spire Missouri purchased natural gas from 24 different suppliers to meet its total service area current gas sales and storage injection requirements. Spire Missouri entered into firm agreements with suppliers including major producers and marketers providing flexibility to meet the temperature-sensitive needs of its customers. Natural gas purchased by Spire Missouri for delivery to its service areas included 48.3 billion cubic feet (Bcf) through the Southern Star Central Gas Pipeline, Inc. (Southern Star) system, 26.3 Bcf through the Spire STL Pipeline, 26.3 Bcf through the Enable Mississippi River Transmission LLC (MRT) system, 6.3 Bcf through the Panhandle Eastern Pipe Line Company, LP (PEPL) system, 5.5 Bcf through the Rockies Express Pipeline, LLC (REX) system, and 4.5 Bcf through the Tallgrass Interstate Gas Transmission, LLC (TIGT) system. Spire Missouri also holds firm transportation arrangements on several other interstate pipeline systems that provide access to gas supplies upstream. Some of Spire Missouri’s commercial and industrial customers purchased their own gas with Spire Missouri transporting 52.0 Bcf to them through its distribution system.

The fiscal year 2022 peak day send out of natural gas to Spire Missouri customers, including transportation customers, occurred on January 20, 2022. The average temperature was 11 degrees Fahrenheit in both St. Louis and Kansas City. On that day, Spire Missouri’s customers consumed 1.58 Bcf of natural gas. For eastern Missouri, this peak day demand was met with natural gas transported to St. Louis through the MRT, Missouri Gas Pipeline LLC, Spire STL Pipeline, and Southern Star transportation systems, and from Spire Missouri’s on-system storage. For western Missouri, this peak day demand was met with natural gas transported to Kansas City through the Southern Star, PEPL, TIGT, and REX transportation systems.

Spire Alabama’s distribution system is connected to two major interstate natural gas pipeline systems, Southern Natural Gas Company, L.L.C. (Southern Natural Gas) and Transcontinental Gas Pipe Line Company, LLC (Transco). It is also connected to two intrastate natural gas pipeline systems.

5

Spire Alabama purchases natural gas from various natural gas producers and marketers. Certain volumes are purchased under firm contractual commitments with other volumes purchased on a spot market basis. The purchased volumes are delivered to Spire Alabama’s system using a variety of firm transportation, interruptible transportation and storage capacity arrangements designed to meet the system’s varying levels of demand.

In fiscal 2022, Spire Alabama purchased natural gas from 27 different suppliers to meet current gas sales, storage injection, and liquefied natural gas (LNG) liquefaction requirements, of which one supplier is under a long-term supply agreement. Approximately 68.2 Bcf was purchased for delivery by Southern Natural Gas, 3.7 Bcf by Transco, and 11.0 Bcf through intrastate pipelines to the Spire Alabama delivery points for its residential, commercial, and industrial customers.

The fiscal 2022 peak day send out for Spire Alabama was 0.5 Bcf on February 14, 2022, when the average temperature was 32 degrees Fahrenheit in Birmingham, of which 100% was met with supplies transported through Southern Natural Gas, Transco, and intrastate facilities.

Spire Gulf’s distribution system is directly connected to interstate pipelines, natural gas processing plants and gas storage facilities. Spire Gulf buys from a variety of producers and marketers, with BP Energy Company being the primary supplier.

Natural Gas Storage

Spire Missouri believes it currently has ample storage capacity to meet the demands of its distribution system, particularly to augment its supply during peak demand periods; however, see related discussion of Spire STL Pipeline under the caption “—The Utilities’ ability to meet their customers’ natural gas requirements may be impaired if contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner” under Item 1A, Risk Factors, and in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8. Spire Missouri has a contractual right to store 21.5 Bcf of gas in MRT’s storage facility located in Unionville, Louisiana, 16.3 Bcf of gas storage in Southern Star’s system storage facilities located in Kansas and Oklahoma, and 1.4 Bcf of firm storage on PEPL’s system storage. MRT’s tariffs allow injections into storage from May 1 through November 1 and require the withdrawal from storage of all but 4.3 Bcf from November 1 through May 1. Southern Star tariffs allow both injections and withdrawals into storage year-round with ratchets that restrict the associated flows dependent upon the underlying inventory level per the contracts.

In addition, Spire Missouri supplements pipeline gas with natural gas withdrawn from its own underground storage field located in St. Louis and St. Charles Counties in Missouri. The field is designed to provide approximately 0.3 Bcf of natural gas withdrawals on a peak day, and provides the ability to reinject natural gas during the heating season to replenish or increase deliverability, subject to maximum annual net withdrawals of approximately 4.0 Bcf of natural gas based on the inventory level that Spire Missouri plans to maintain.

Spire Alabama has a contractual right to store 12.7 Bcf of gas with Southern Natural Gas, 0.5 Bcf of gas with Gulf South Pipeline, 0.2 Bcf of gas with Transco and 0.2 Bcf of gas with Tennessee Gas Pipeline. In addition, Spire Alabama has 2.0 Bcf of LNG storage that can provide the system with up to an additional 0.2 Bcf of natural gas daily to meet peak day demand.

Spire Gulf obtains adequate storage capacity through Gulf South Pipeline Company, LP, and Enstor Gas, LLC’s Bay Gas Storage.

Union Agreements

The Company believes labor relations with its employees are good. Should that condition change, the Company could experience labor disputes, work stoppages or other disruptions that could negatively impact the Company’s system operations, customer service, results of operations and cash flows.

6

The following table presents the Company’s various labor agreements as of September 30, 2022:

		Employees	Contract Start	Contract End
Union	Local	Covered	Date	Date
Spire Missouri
United Steel, Paper and Forestry, Rubber Manufacturing, Allied-Industrial and Service Workers International Union (USW)	884	68	August 10, 2021	July 31, 2024
USW	11-6	843	August 1, 2021	July 31, 2024
USW	11-6-03	101	August 1, 2021	July 31, 2024
USW	12561	130	August 1, 2022	July 31, 2025
USW	14228	44	August 1, 2022	July 31, 2025
USW	11-267	28	August 1, 2022	July 31, 2025
International Brotherhood of Electrical Workers	53	2	October 1, 2022	September 30, 2025
Gas Workers Metal Trades locals of the United Association of Journeyman and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada	781-Kansas City	216	August 1, 2022	July 31, 2025
Gas Workers Metal Trades locals of the United Association of Journeyman and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada	781-Monett	52	August 1, 2022	July 31, 2025
Total Spire Missouri		1,484
Spire Alabama
USW	12030	235	May 1, 2020	April 30, 2023
United Association of Gas Fitters	548	221	May 1, 2022	April 30, 2025
Total Spire Alabama		456
Spire Gulf
USW	541	68	August 1, 2020	July 31, 2023
Total Spire		2,008

7

Operating Revenues and Customer Information

The following tables present information on Spire’s revenues and volume sold and transported (before intersegment eliminations), and annual average numbers of customers for the three years ended September 30, 2022, 2021 and 2020.

Gas Utility Operating Revenues
(% of Total)	2022			2021			2020
Residential		73	%		58	%		68	%
Commercial & Industrial		17	%		28	%		22	%
Transportation		6	%		6	%		6	%
Other		4	%		8	%		4	%
Total		100	%		100	%		100	%

Gas Utility Volume Sold and Transported
(In millions of CCF)	2022		2021		2020
Residential		994.7		1,069.6		1,033.5
Commercial & Industrial		468.9		479.0		464.1
Transportation		1,617.6		1,614.7		1,637.8
Interruptible		11.8		15.0		14.5
Total System		3,093.0		3,178.3		3,149.9
Off-System		82.0		69.4		83.2
Total		3,175.0		3,247.7		3,233.1

Gas Utility Customers	2022		2021		2020
Residential		1,618,515		1,612,385		1,599,693
Commercial & Industrial		113,077		112,635		112,566
Transportation		1,023		846		847
Interruptible		50		63		67
Total		1,732,665		1,725,929		1,713,173

Total annual average number of customers for Spire Missouri and Spire Alabama for fiscal 2022 was 1,199,932 and 430,137, respectively.

Regulatory Matters

For details on regulatory matters, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

Other Pertinent Matters

Spire Missouri is the only distributor of natural gas within its franchised service areas, while Spire Alabama is the main distributor of natural gas in its service areas. Spire Missouri and Spire Alabama have franchises in nearly all the communities where they provide service with terms varying from five years to an indefinite duration. A franchise is essentially a municipal permit to install and maintain pipes and construct other facilities in the community. All of the franchises are free from unduly burdensome restrictions and are adequate for the conduct of Spire Missouri’s and Spire Alabama’s current public utility businesses in their respective states. In recent years, although certain franchise agreements have expired, the Utilities have continued to provide service in those communities without formal franchises.

The principal competition for the Utilities comes from the local electric companies. Other competitors in the service areas include suppliers of fuel oil, coal, and propane, as well as natural gas pipelines that can directly connect to large volume customers. Coal has been price competitive as a fuel source for very large boiler plant loads, but environmental requirements have shifted the economic advantage to natural gas. Oil and propane can be used to fuel boiler loads and certain direct-fired process applications, but these fuels require on-site storage, thus limiting their competitiveness. Competition also comes from district steam systems in the downtown areas of both St. Louis and Kansas City and from municipally or publicly owned natural gas distributors located adjacent to the Alabama service territories. Direct use of renewables will continue to grow in the future and compete against distributed generation using natural gas.

8

Residential, commercial, and industrial customers represent approximately 94% and 81% of fiscal 2022 operating revenues for Spire Missouri and Spire Alabama, respectively. Given the current level of natural gas supply and market conditions, the Utilities believe that the relative comparison of natural gas equipment and operating costs with those of competitive fuels will not change significantly in the foreseeable future, and that these markets will continue to be supplied by natural gas. In new multi-family and commercial rental markets, the Utilities’ competitive exposures are presently limited to space and water heating applications.

Spire Missouri and Spire Alabama offer gas transportation service to its large commercial and industrial customers. Transportation customers represent approximately 3% and 15% of fiscal 2022 operating revenues for Spire Missouri and Spire Alabama, respectively. The Spire Missouri tariff approved for that type of service produces a margin similar to that which Spire Missouri would have received under their regular sales rates. Similarly, Spire Alabama’s tariff is based on Spire Alabama’s sales profit margin so that operating margins are unaffected.

The Utilities are subject to various environmental laws and regulations that, to date, have not materially affected the Utilities’ or the Company’s financial position and results of operations. For a detailed discussion of environmental matters, see Note 16, Commitment and Contingencies, of the Notes to Financial Statements in Item 8.

GAS MARKETING

Spire Marketing is engaged in the marketing of natural gas and related services throughout the United States, which includes customers within and outside of the Utilities’ service areas. For fiscal 2022 and 2021, Spire Marketing volumes averaged 1.73 Bcf/day and 2.02 Bcf/day, respectively. The majority of Spire Marketing’s business is derived from the procurement and physical delivery of natural gas to a diverse customer base, primarily in the central and southern U.S. Through its retail operations, Spire Marketing offers natural gas marketing services to large commercial and industrial customers, while its wholesale business consists of producers, pipelines, power generators, municipalities, storage operators, and utility companies. Wholesale activities currently represent a majority of the total Gas Marketing business. The Gas Marketing strategy is to leverage its market expertise and risk management skills to manage and optimize the value of its portfolio of commodity, transportation, park and loan, and storage contracts while controlling costs and acting on new marketplace opportunities.

In the course of its business, Spire Marketing enters into agreements to purchase natural gas at a future date in order to lock up supply to cover future sales commitments to its customers. To secure access to the markets it serves, Spire Marketing contracts for transportation capacity on various pipelines from pipeline companies directly and from other parties through the secondary capacity market. Throughout fiscal 2022, Spire Marketing held approximately 1.1 Bcf per day of firm transportation capacity. In addition, to ensure reliability of service and to provide operational flexibility, Spire Marketing enters into firm storage contracts and interruptible park and loan transactions with various companies, where it is able to buy and retain gas to be delivered at a future date, at which time it sells the natural gas to third parties. As of September 30, 2022, Spire Marketing has contracted for approximately 28.2 Bcf of such storage and park and loan capacity for the 2022-2023 winter season.

9

OTHER

Other components of the Company’s consolidated information include:

•  Spire's natural gas midstream operations consisting of Spire STL Pipeline and Spire Storage West LLC (“Spire Storage”), described below;

•  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.

Spire STL Pipeline is a wholly owned subsidiary of Spire which owns and operates a 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. The pipeline is under the jurisdiction of the Federal Energy Regulatory Commission (FERC) and is currently permitted to deliver natural gas supply into eastern Missouri under a temporary certificate authorization from FERC. See related discussion under the caption “—Failing to secure a permanent re-authorization of the Spire STL Pipeline to operate could adversely affect the Company” under “Item 1A. Risk Factors” and in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

Spire Storage is engaged in the storage of natural gas in the western region of the United States. The facility consists of two storage fields operating under one FERC market-based rate tariff currently authorized to provide up to 55 Bcf of storage capacity to customers. The actual storage capacity was 23 Bcf as of September 30, 2022, and management is in the process of expanding it to 39 Bcf by 2025.

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Item 1A. Risk Factors

Spire’s and the Utilities’ business and financial results are subject to a number of risks and uncertainties, including those set forth below. The risks described below are those the Company and the Utilities consider to be material. When considering any investment in Spire or the Utilities’ securities, investors should carefully consider the following information, as well as information contained in the caption “Forward-Looking Statements,” Item 7A, and other documents Spire, Spire Missouri, and Spire Alabama file with the SEC. This list is not exhaustive, and Spire’s and the Utilities’ respective management places no priority or likelihood based on the risk descriptions, order of presentation or grouping by subsidiary. All references to dollar amounts are in millions.

RISKS AND UNCERTAINTIES THAT RELATE TO THE BUSINESS AND FINANCIAL RESULTS OF SPIRE AND ITS SUBSIDIARIES

Climate change and regulatory and legislative developments in the energy industry related to climate change may in the future adversely affect operations and financial results.

Climate change, and regulatory, public policy, or legislative changes to address the potential for climate change, could adversely affect operations and financial results of the Company. Management believes it is likely that any such resulting impacts would occur over a long period of time and thus would be difficult to quantify with any degree of specificity. To the extent climate change results in warmer temperatures, financial results could be adversely affected through lower gas volumes and revenues and reduced marketing opportunities. Another possible impact of climate change may be more frequent and more severe weather events, such as hurricanes and tornadoes, which could increase costs to repair damaged facilities and restore service to customers or result in lost revenues if the Company were unable to deliver natural gas to customers. Such weather events could also disrupt our usual gas supplies and make it impossible or extremely costly to find replacement gas for our customers. To the extent such impacts are not covered by insurance or recovered in rates, the foregoing events could have a material adverse effect on the Company’s financial condition and results of operations.

In addition, there have been a number of federal, state and local legislative and regulatory initiatives proposed in recent years in an attempt to control or limit the effects of global warming and overall climate change, including greenhouse gas emissions, such as methane and carbon dioxide. The adoption in the future of this type of legislation by Congress or similar legislation by states or localities, or the adoption of related regulations by federal, state or local governments mandating a substantial reduction in greenhouse gas emissions, restricting the use of fossil fuels, such as natural gas, or restricting the construction of infrastructure necessary to deliver natural gas to customers could have far-reaching and significant impacts on the energy industry. Such new legislation or regulations could result in increased compliance costs or additional operating restrictions, affect the demand for natural gas or impact the prices charged to customers. At this time, we cannot predict the potential impact of such laws or regulations that may be adopted on the Company’s and the Utilities’ future business, financial condition or financial results.

Failing to secure a permanent re-authorization of the Spire STL Pipeline to operate could adversely affect the Company.

On June 22, 2021, the U.S. Court of Appeals for the District of Columbia Circuit issued an order vacating the Spire STL Pipeline’s FERC certificates to operate and remanding the proceeding back to the FERC, which took effect on October 8, 2021. On September 14, 2021, and December 3, 2021, the FERC issued temporary certificates to allow the pipeline to continue operating indefinitely while it considers approval of a new permanent certificate.

The court decision to vacate the Spire STL Pipeline’s Certificate of Public Convenience and Necessity previously issued by the FERC in 2018 could, depending on the course of action the FERC takes, cause a temporary or permanent halt in the natural gas supply transported by the pipeline or result in new regulatory conditions imposed on the pipeline, any of which could adversely affect the Company (including Spire Missouri) and our customers.

Spire Missouri relies on the Spire STL Pipeline to transport natural gas into the St. Louis region. In the event the pipeline is taken out of service or even as a result of regulatory uncertainty and business constraints associated with ongoing temporary authorization of the pipeline, Spire Missouri’s customers, financial condition and results of operations may be adversely impacted, which could result in a material adverse effect on the Company’s financial condition and results of operations, as discussed under RISKS THAT RELATE TO THE GAS UTILITY SEGMENT below.

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In addition, in the event the pipeline is taken out of service, the Company’s financial condition and results of operations may be adversely impacted by impairment of Spire STL Pipeline’s assets, currently carried at over $270 million, and other effects. Spire STL Pipeline will continue to pursue all legal and regulatory avenues to ensure its continued and future operation.

Reductions in capacity of interconnecting, third-party pipelines could cause a reduction in volumes transported by the Spire STL Pipeline, which could adversely affect the Company.

Spire STL Pipeline is dependent upon third-party pipelines and other facilities to provide delivery options to and from its pipeline. If any pipeline connection were to become unavailable for volumes of natural gas due to repairs, damage to the facility, lack of capacity or any other reason, Spire STL Pipeline’s ability to continue shipping natural gas to end markets could be restricted, and to the extent not mitigated by contractual indemnification, insurance or tariffs, would thereby reduce its revenues. Any permanent interruption at any key pipeline interconnect that causes a material reduction in volumes transported on its pipeline could result in an impairment loss that could have a material adverse effect on the Company’s financial condition and results of operations.

As a holding company, Spire depends on its operating subsidiaries to meet its financial obligations.

Spire is a holding company with no significant assets other than the stock of its operating subsidiaries and cash investments. Spire, and Spire Missouri prior to the holding company’s formation in 2000, has paid common stock dividends continuously since 1946. Spire’s ability to pay dividends to its shareholders is dependent on the ability of its subsidiaries to generate sufficient net income and cash flows to pay upstream dividends and make loans or loan repayments. In addition, because it is a holding company and the substantial portion of its assets are represented by its holdings in the Utilities, the risks faced by the Utilities as described below under RISKS THAT RELATE TO THE GAS UTILITY SEGMENT may also adversely affect Spire’s cash flows, liquidity, financial condition and results of operations.

A downgrade in Spire’s and/or its subsidiaries’ credit ratings may negatively affect its ability to access capital and its cost of capital.

Currently, Spire, Spire Missouri, and Spire Alabama have investment grade credit ratings. There is no assurance that such credit ratings for any of the Spire companies will remain in effect for any given period of time or that such ratings will not be lowered, suspended or withdrawn entirely by the rating agencies, if, in each rating agency’s judgment, circumstances so warrant. Spire has a working capital line of credit to meet its short-term liquidity needs. Spire’s line of credit may be used to meet the liquidity needs of any of its subsidiaries, subject to sublimits. If the rating agencies lowered the credit rating at any of these entities, particularly below investment grade, it might significantly limit that entity’s ability to secure new or additional credit facilities and would increase its costs of borrowing. Spire’s or the Utilities’ ability to borrow under current or new credit facilities and costs of that borrowing have a direct impact on their ability to execute their operating strategies.

Pipeline integrity programs and repairs may impose significant costs and liabilities on the Company.

The U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA) requires pipeline operators to develop integrity management programs to comprehensively evaluate their pipelines and to take additional measures to protect pipeline segments located in areas where a leak or rupture could potentially do the most harm. PHMSA constantly updates its regulations to ensure the highest levels of pipeline safety. As the operator of pipelines, Spire is required to:

•  perform ongoing assessments of pipeline integrity;

•  identify and characterize applicable threats to pipelines;

•  improve data collection, integration and analysis;

•  repair and remediate the pipeline as necessary; and

•  implement preventative and mitigating actions.

The Company is required to maintain pipeline integrity programs that are intended to assess pipeline integrity. Any repair, remediation, preventative or mitigating actions may require significant capital and operating expenditures. Should the Company fail to comply with applicable statutes and the PHMSA Office of Pipeline Safety’s rules and related regulations and orders, it could be subject to significant penalties and fines.

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Transporting, distributing, and storing natural gas and propane involves numerous risks that may result in accidents and other operating risks and costs.

Natural gas transportation, distribution and storage activities inherently involve a variety of hazards and operations risks, such as leaks, accidental explosions, damage caused by third parties, and mechanical problems, which could cause substantial financial losses. In addition, these risks could result in serious injury to employees and non-employees, loss of human life, significant damage to property, environmental pollution, impairment of operations, and substantial losses to the Company and its subsidiaries. The location of pipelines and storage facilities near populated areas, including residential areas, commercial business centers, and industrial sites, could increase the level of damages resulting from these risks. Similar risks also exist for Spire Missouri’s propane storage, transmission and minor distribution operations. These activities may subject the Company to litigation or administrative proceedings. Such litigation or proceedings could result in substantial monetary judgments, fines, or penalties against the Company and its subsidiaries or be resolved on unfavorable terms. The Utilities and other Spire businesses are subject to federal and state laws and regulations requiring them to maintain certain safety and system integrity measures by identifying and managing storage and pipeline risks. Compliance with these laws and regulations, or future changes in these laws and regulations, may result in increased capital, operating and other costs which may not be recoverable in a timely manner from customers in rates. In accordance with customary industry practices, the Utilities and other Spire businesses maintain insurance against a significant portion, but not all, of these risks and losses. To the extent that the occurrence of any of these events is not fully covered by insurance, it could adversely affect the financial condition and results of operations of the Company and its subsidiaries.

In connection with acquisitions, Spire and Spire Missouri recorded goodwill and long-lived assets that could become impaired and adversely affect its financial condition and results of operations.

Spire and Spire Missouri assess goodwill for impairment annually or more frequently if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company and Spire Missouri assess their long-lived assets for impairment whenever events or circumstances indicate that an asset’s carrying amount may not be recoverable. To the extent the value of goodwill or long-lived assets becomes impaired, the Company and Spire Missouri may be required to incur impairment charges that could have a material impact on their results of operations.

Since interest rates are a key component, among other assumptions, in the models used to estimate the fair values of the Company’s reporting units, rises in interest rates would generally decrease the calculated fair values and future impairments may occur. Due to the subjectivity of the assumptions and estimates underlying the impairment analysis, Spire and Spire Missouri cannot provide assurance that future analyses will not result in impairment. These assumptions and estimates include projected cash flows, current and future rates for contracted capacity, growth rates, weighted average cost of capital and market multiples.

Changes to income tax policy, certain tax elections, tax regulations and future taxable income could adversely impact the Company’s financial condition and results of operations.

The Company has significantly reduced its current federal and state income tax obligations over the past few years through tax planning strategies including the use of bonus depreciation deductions for certain expenditures for property. As a result, the Company has generated large annual taxable losses that have resulted in significant federal and state net operating losses. The Company plans to utilize these net operating losses in the future to reduce income tax obligations. The value of these net operating losses could be reduced if the Company cannot generate enough taxable income in the future to utilize all of the net operating losses generated prior to the Tax Cuts and Jobs Act of 2017 before they expire due to lower-than-expected financial performance or regulatory actions.

Changes to income tax policy, laws and regulations, including but not limited to changes in tax rates, the deductibility of certain expenses including interest and state and local income taxes and/or changes in the deductibility of certain expenditures for property, could adversely impact the Company. Those impacts could include reducing the value of its net operating losses and could result in material charges to earnings. Further, the Company’s financial condition and results of operations may be adversely impacted. Notably, the Inflation Reduction Act became effective on August 16, 2022. This new law provides various credits and incentives with respect to clean energy. The Company is evaluating the impact and applicability of these programs to its operations, but they are not expected to have a material impact on the Company.

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Spire’s pension and other postretirement benefit plans are subject to investment and interest rate risk that could negatively impact its financial condition.

The Company and its subsidiaries have pension and other postretirement benefit plans that provide benefits to many of their employees and retirees. Costs of providing benefits and related funding requirements of these plans are subject to changes in the market value of the assets that fund the plans. The funded status of the plans and the related costs reflected in the Company’s financial statements are affected by various factors, which are subject to an inherent degree of uncertainty, including economic conditions, financial market performance, interest rates, life expectancies and demographics. Recessions and volatility in the domestic and international financial markets have negatively affected the asset values of Spire’s pension plans at various times in the past. Poor investment returns or lower interest rates may necessitate accelerated funding of the plans to meet minimum federal government requirements, which could have an adverse impact on the Company’s and its subsidiaries’ financial condition and results of operations. For more information, including regulatory provisions affecting the Utilities’ plans, see Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8.

The Company’s natural gas storage business includes inherent geologic and operational risks, as well as risks from competition and changes in market fundamentals.

The Company plans to continue to increase capacity, improve operating performance, and improve the integrity of its storage fields and associated above-ground facilities of Spire Storage. Construction of such assets is subject to various risks and uncertainties, including supply chain and labor disruptions, weather conditions during construction, equipment failures and construction quality issues. Any such disruptions, as well as any negative effects from the risks discussed below, could result in an impairment of Spire's investment in the project, and such impairment could have a material adverse effect on the Company's financial condition and results of operations. 

Any damage to the Spire Storage facilities or pipelines, or lack of integrity to its storage fields, including damages caused by a blow-out, to the extent not covered by insurance, could have a material adverse effect on the Company’s financial condition and results of operations.

The Company’s storage assets are connected to third-party-owned pipelines. The continuing operation of such third-party pipelines is not within its control. If any of these pipelines become unable to transport, treat or process natural gas or natural gas liquids, or if the volumes it gathers or transports do not meet the quality requirements of such pipelines, the Company’s revenues and cash flows could be adversely affected.

The Company does not own all the land on which its storage facilities were constructed, and it is, therefore, subject to the possibility of more onerous terms or increased costs to retain necessary land use, if and when applicable property rights expire or are renewed. Changes in the terms of such land use could have an adverse impact on the financial condition and results of operations of the Company’s storage business.

Spire Storage is subject to competition from similar services provided by pipelines and from competing independent storage providers capable of serving its customers. Natural gas storage is a competitive business, with competitors having the ability to expand storage capacity. Increased competition in the natural gas storage business could reduce the demand and drive rates down for the Company’s natural gas storage services.

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Storage businesses are affected by various gas market fundamentals which impact the level of demand for storage services and the rates that can be charged for these services. These market fundamentals include: seasonal price spread; monthly, daily and hourly price volatility; locational basis for pricing points on pipelines connected to a storage facility; seasonal, daily and hourly weather; and operational impacts in supply and market areas served by a storage facility and its connected pipelines. These fundamentals have varying and potentially material adverse impacts on the various services offered by storage facilities and the rates that can be charged for these services in the market. These services include long-term firm storage, short-term park and loan, wheeling, and optimization. Rates below the variable costs to operate a storage facility could result in a decision to not operate all the capacity in the facility or to operate the facility at a loss if required to fulfill firm customer contract obligations. A sustained decline in these rates or a shut-in of all or a portion of one or more facilities’ capacity could have an adverse impact on the Company’s financial condition and results of operations.

RISKS THAT RELATE TO THE GAS UTILITY SEGMENT

Regulation of the Utilities’ businesses may impact rates they are able to charge, costs, and profitability.

The Utilities are subject to regulation by federal, state and local authorities. At the state level, the Utilities are regulated in Missouri by the Missouri Public Service Commission (MoPSC), in Alabama by the Alabama Public Service Commission (APSC), and in Mississippi by the Mississippi Public Service Commission (MSPSC). These state public service commissions regulate many aspects of the Utilities’ distribution operations, including construction and maintenance of facilities, operations, safety, the rates the Utilities may charge customers, the terms of service to their customers, transactions with their affiliates, the rate of return they are allowed to realize, and the accounting treatment for certain aspects of their operations. For further discussion of these accounting matters, see Regulatory Accounting under Critical Accounting Estimates in Item 7.

Accounting for the economics of rate regulation affects multiple financial statement line items (such as property, plant, and equipment; regulatory assets and liabilities; operating revenues; and operating expenses) and affects multiple disclosures in the Company’s financial statements. There is a risk that the state public service commissions will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. A material disallowance of deferred costs could adversely affect the Utilities’ results of operations.

The MoPSC also approves Spire Missouri’s Infrastructure System Replacement Surcharge (ISRS). The ISRS allows Spire Missouri expedited recovery for its investment to upgrade its infrastructure and enhance its safety and reliability without the necessity of a formal rate case. Such investments are subject to review, and there is risk that any material disallowance of costs under ISRS could adversely affect the timing of revenues and cash flows.

The Utilities’ ability to obtain and timely implement rate increases and rate supplements to maintain the current rate of return is subject to regulatory review and approval. There can be no assurance that they will be able to obtain rate increases or rate supplements or continue earning the current authorized rates of return. Spire Alabama’s and Spire Gulf’s rate setting process, Rate Stabilization and Equalization (RSE), is subject to regulation by the APSC and is implemented pursuant to APSC orders expiring September 30, 2025. RSE adjustments would continue after that date unless the APSC enters an order to the contrary in a manner consistent with the law. Spire Mississippi is subject to regulation by the MSPSC and utilizes the Rate Stabilization Adjustment (RSA) Rider. For further details, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

The Utilities could incur additional costs if required to adjust to new laws or regulations, revisions to existing laws or regulations or changes in interpretations of existing laws or regulations. In addition, as the regulatory environment for the natural gas industry increases in complexity, the risk of inadvertent noncompliance could also increase. If the Utilities fail to comply with applicable laws and regulations, whether existing or new, they could be subject to fines, penalties or other enforcement action by the authorities that regulate the Utilities’ operations.

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Significantly warmer-than-normal weather conditions, the effects of climate change, legislative and regulatory initiatives in response to climate change or in support of increased energy efficiency, and other factors that influence customer usage may affect the Utilities’ sale of heating energy and adversely impact their financial position and results of operations.

The Utilities’ earnings are primarily generated by the sale of heating energy. Spire Missouri and Spire Mississippi each have a Weather Normalization Adjustment rider, Spire Alabama has a Temperature Adjustment Rider, and Spire Gulf has a Weather Impact Normalization Factor. These mechanisms, approved by the respective state regulatory body, provide better assurance of the recovery of fixed costs and margins during winter months despite variations in sales volumes due to the impacts of weather, while the annual rate designs of Alabama and Mississippi help adjust for other factors that affect customer usage. However, significantly warmer-than-normal weather conditions in the Utilities’ service areas and other factors, such as climate change, alternative energy sources and increased efficiency of gas furnaces and other appliances, may result in reduced profitability and decreased cash flows attributable to lower gas sales. Furthermore, continuation of these adjustment factors is subject to regulatory discretion.

In addition, legislative and regulatory initiatives by the federal, state and local governments addressing greenhouse gas emissions or restricting the use of natural gas could adversely affect customer demand. The promulgation of regulations of the emissions of greenhouse gases and efficiency for residential gas furnaces and other gas appliances or the potential enactment of congressional legislation addressing global warming and climate change may decrease customer usage, encourage fuel switching from gas to other energy forms, and may result in future additional compliance costs that could impact the Utilities’ financial conditions and results of operations.

The Utilities’ ability to meet their customers’ natural gas requirements may be impaired if contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner.

In order to meet their customers’ annual and seasonal natural gas demands, the Utilities must obtain sufficient supplies, interstate pipeline capacity, and storage capacity. If they are unable to obtain these, either from their suppliers’ inability to deliver the contracted commodity or the inability to secure replacement quantities, to the extent not mitigated by tariffs, contractual indemnification or insurance, the Utilities’ financial condition and results of operations may be adversely impacted. If a substantial disruption in interstate natural gas pipelines’ transmission and storage capacity were to occur during periods of heavy demand, the Utilities’ financial results could be adversely impacted.

In particular, the natural gas supply provided to Spire Missouri by Spire STL Pipeline is at risk due to the order issued by the U.S. Court of Appeals for the District of Columbia Circuit vacating the Spire STL Pipeline’s Certificate of Public Convenience and Necessity previously issued by the FERC and remanding the matter back to the FERC for further action. The STL Pipeline is currently operating under temporary certificates. In the event this pipeline is taken out of service, either temporarily or permanently, Spire Missouri’s ability to secure new pipeline contracts on other systems serving the region may be significantly constrained, and Spire Missouri would not be able to replace that supply based on similar terms or at all over the short term based on current market and operating conditions. In the event that the Spire STL Pipeline is unavailable and an extreme weather event occurs, Spire Missouri would face heightened risks, including service outages and other disruptions; the need for service restoration, creating hazards for Spire Missouri, its employees, and its customers; the potential for loss of life and property in its service territory; and associated exposure to litigation or administrative proceedings. If this pipeline is taken out of service, Spire Missouri may need to design, construct, and place in service new facilities or modify existing facilities in order to receive gas from alternate sources, giving rise to additional regulatory and business risks and hazards.

Spire Missouri will continue to pursue all legal and regulatory avenues to ensure access to reliable, affordable and safe delivery of energy for eastern Missouri. If Spire Missouri is unable to obtain sufficient pipeline capacity to meet its customers’ annual and seasonal natural gas demands, Spire Missouri’s financial condition and results of operations may be adversely impacted which could result in a material adverse effect on the Company’s financial condition and results of operations.

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The Utilities are involved in legal or administrative proceedings before various courts and governmental bodies that could adversely affect their results of operations and financial condition.

The Utilities are involved in legal or administrative proceedings before various courts and governmental bodies with respect to general claims, rates, environmental issues, gas cost prudence reviews and other matters. For further details, see Contingencies in Note 16 to the financial statements in Item 8. Adverse decisions regarding these matters, to the extent they require the Utilities to make payments in excess of amounts provided for in their financial statements, or to the extent they are not covered by insurance, could adversely affect the Utilities’ results of operations and financial condition.

The Utilities’ liquidity may be adversely affected by delays in recovery of their costs, due to regulation.

In the normal course of business, there is a lag between when the Utilities incur increases in certain of their costs and the time in which those costs are considered for recovery in the ratemaking process. Cash requirements for increased operating costs, increased funding levels of defined benefit pension and postretirement costs, capital expenditures, and other increases in the costs of doing business can require outlays of cash prior to the authorization of increases in rates charged to customers, as approved by the MoPSC, APSC, and MSPSC. Accordingly, the Utilities’ liquidity can be adversely impacted to the extent higher costs are not timely recovered from their customers.

The Utilities’ liquidity and, in certain circumstances, the Utilities’ results of operations may be adversely affected by the cost of purchasing natural gas during periods in which natural gas prices are rising significantly.

The tariff rate schedules of Spire Missouri, Spire Gulf and Spire Mississippi contain Purchased Gas Adjustment (PGA) clauses and Spire Alabama’s tariff rate schedule contains a Gas Supply Adjustment (GSA) rider that permit the Utilities to file for rate adjustments to recover the cost of purchased gas. Changes in the cost of purchased gas are flowed through to customers and may affect uncollectible amounts and cash flows and can therefore impact the amount of capital resources.

Currently, Spire Missouri is allowed to adjust the gas cost component of rates up to four times each year while Spire Alabama and Spire Gulf (collectively, the “Alabama Utilities”) and Spire Mississippi may adjust the gas cost component of their rates on a monthly basis. Spire Missouri must make a mandatory gas cost adjustment at the beginning of the winter, in November, and during the next twelve months may make up to three additional discretionary gas cost adjustments, so long as each of these adjustments is separated by at least two months.

The MoPSC typically approves the Spire Missouri PGA changes on an interim basis, subject to refund and the outcome of a subsequent audit and prudence review. Due to such review process, there is a risk of a disallowance of full recovery of these costs. Any material disallowance of purchased gas costs would adversely affect results of operations. The Alabama Utilities’ gas supply charges are submitted for APSC review on a monthly basis, regardless of whether there is a request for a change, so prudence review occurs on an ongoing basis. Spire Mississippi’s PGA is adjusted on a monthly basis for the most recent charges and is filed at the MSPSC on a monthly basis.

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Increases in the prices the Utilities charge for gas may also adversely affect revenues because they could lead customers to reduce usage and cause some customers to have trouble paying the resulting higher bills. These higher prices may increase bad debt expenses and ultimately reduce earnings. Rapid increases in the price of purchased gas may result in an increase in short-term debt.

To lower financial exposure to commodity price fluctuations, Spire Missouri enters into contracts to hedge the forward commodity price of its natural gas supplies. As part of this strategy, Spire Missouri may use fixed-price forward physical purchase contracts, swaps, futures, and option contracts. However, Spire Missouri does not hedge the entire exposure of energy assets or positions to market price volatility, and the coverage will vary over time. Any costs, gains, or losses experienced through hedging procedures, including carrying costs, generally flow through the PGA clause, thereby limiting Spire Missouri’s exposure to earnings volatility. However, variations in the timing of collections of such gas costs under the PGA clause and the effect of cash payments for margin deposits associated with Spire Missouri’s use of natural gas derivative instruments may cause short-term cash requirements to vary. These procedures remain subject to prudence review by the MoPSC.

Other than fixed-price forward physical purchase contracts, Spire Alabama, Spire Gulf, and Spire Mississippi currently do not utilize risk mitigation strategies that incorporate commodity hedge instruments, but Spire Alabama has the ability to do so through its GSA.

Environmental laws and regulations may require significant expenditures or increase operating costs.

The Utilities are subject to federal, state and local environmental laws and regulations affecting many aspects of their present and future operations. These laws and regulations require the Utilities to obtain and comply with a wide variety of environmental licenses, permits, inspections, and approvals. Failure to comply with these laws and regulations and failure to obtain any required permits and licenses may result in costs to the Utilities in the form of fines, penalties or business interruptions, which may be material. In addition, existing environmental laws and regulations could be revised or reinterpreted and/or new laws and regulations could be adopted or become applicable to the Utilities or their facilities, thereby impacting the Utilities’ cost of compliance. The discovery of presently unknown environmental conditions, including former manufactured gas plant sites, and claims against the Utilities under environmental laws and regulations may result in expenditures and liabilities, which could be material. To the extent environmental compliance costs are not fully covered by insurance or recovered in rates from customers, those costs may have an adverse effect on the Utilities’ financial condition and results of operations.

The Utilities’ business activities are concentrated in three states.

The Utilities provide natural gas distribution services to customers in Alabama, Mississippi, and Missouri. Changes in the regional economies, politics, regulations and weather patterns of these states could negatively impact the Utilities’ growth opportunities and the usage patterns and financial condition of customers and could adversely affect the Utilities’ earnings, cash flows, and financial position.

The Utilities may be adversely affected by economic conditions.

Periods of slowed economic activity generally result in decreased energy consumption, particularly by industrial and large commercial companies, a loss of existing customers, and fewer new customers especially in newly constructed buildings. As a consequence, national or regional recessions or other downturns in economic activity could adversely affect the Utilities’ revenues and cash flows or restrict their future growth. Economic conditions in the Utilities’ service territories may also adversely impact the Utilities’ ability to collect accounts receivable, resulting in an increase in bad debt expense.

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Because of competition, the Utilities may not be able to retain existing customers or acquire new customers, which could have an adverse impact on their business, results of operations and financial condition.

The Utilities face the risk that larger commercial or industrial customers may bypass gas distribution services by gaining distribution directly from interstate pipelines or, in the case of Spire Alabama and Spire Gulf, also from municipally or publicly owned gas distributors located adjacent to its service territory. The Utilities cannot provide any assurance that increased competition will not have a material adverse effect on their business, financial condition or results of operations.

The Utilities compete with distributors offering a broad range of services and prices, from full-service distributors to those offering delivery only. The Utilities also compete for retail customers with suppliers of alternative energy products, principally propane and electricity, and to a growing extent, distributed sources of renewable energy. If they are unable to compete effectively, the Utilities may lose existing customers and/or fail to acquire new customers, which in the aggregate could have a material adverse effect on their business, results of operations and financial condition. Along those lines, changes in wholesale natural gas prices compared with prices for electricity, fuel oil, coal, propane, or other energy sources can significantly impact the cost of delivered natural gas, which may affect the Utilities’ retention of natural gas customers and may adversely impact their financial condition and results of operations.

Regional supply/demand fluctuations and changes in national infrastructure, as well as regulatory discretion, may adversely affect the Utilities’ ability to profit from off-system sales and capacity release.

Spire Missouri’s and Spire Alabama’s income from off-system sales and capacity release is subject to fluctuations in market conditions and changing supply and demand conditions in areas the Utilities hold pipeline capacity rights. Specific factors impacting the Utilities’ income from off-system sales and capacity release include the availability of attractively priced natural gas supply, availability of pipeline capacity, and market demand. Income from off-system sales and capacity release is shared with customers. Spire Missouri and Spire Alabama are allowed to retain 25% of the net margins achieved as a result of such off-system sales and capacity release. The Utilities’ ability to retain such income in the future is subject to regulatory discretion. In fact, as of April 2022, Spire Alabama can only retain the 25% of capacity release after the first $1.6 million goes entirely to customers (while sharing remains immediate for off-system sales).

RISKS THAT RELATE TO THE GAS MARKETING SEGMENT

Increased competition, fluctuations in natural gas commodity prices, expiration of supply and transportation arrangements, and infrastructure projects may adversely impact the future profitability of Gas Marketing.

Competition in the marketplace and fluctuations in natural gas commodity prices have a direct impact on the Gas Marketing business. Changing market conditions and prices, the narrowing of regional and seasonal price differentials and limited future price volatility may adversely impact its sales margins or affect its ability to procure gas supplies and/or to serve certain customers, which may reduce sales profitability and/or increase certain credit requirements caused by reductions in netting capability. Also, Gas Marketing profitability may be impacted by the effects of the expiration, in the normal course of business, of certain of its natural gas supply contracts if those contracts cannot be replaced and/or renewed with arrangements with similar terms and pricing. Although the FERC regulates the interstate transportation of natural gas and establishes the general terms and conditions under which Spire Marketing may use interstate gas pipeline capacity to purchase and transport natural gas, Spire Marketing must occasionally renegotiate its transportation agreements with a concentrated group of pipeline companies. Renegotiated terms of new agreements, or increases in FERC-authorized rates of existing agreements, may impact Gas Marketing’s future profitability. Profitability may also be adversely impacted if pipeline capacity or future storage capacity secured is not fully utilized.

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Reduced access to credit and/or capital markets may prevent the Gas Marketing business from executing operating strategies.

The Gas Marketing segment relies on its cash flows, ability to effect net settlements with counterparties, parental guaranties, and access to Spire’s liquidity resources to satisfy its credit and working capital requirements. Spire Marketing’s ability to rely on parental guaranties is dependent upon Spire’s financial condition and credit ratings. If Spire’s credit ratings were lowered, particularly below investment grade, counterparty acceptance of parental guaranties may diminish, resulting in decreased availability of credit. Additionally, under such circumstances, certain counterparties may require Spire Marketing to provide prepayments or cash deposits, amounts of which would be dependent upon natural gas market conditions. Reduced access to credit or increased credit requirements, which may also be caused by factors such as higher overall natural gas prices, may limit Spire Marketing’s ability to enter into certain transactions. In addition, Spire Marketing has concentrations of counterparty credit risk in that a significant portion of its transactions are with (or are associated with) energy producers, utility companies, and pipelines. These concentrations of counterparties have the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that each of these three groups may be affected similarly by changes in economic, industry, or other conditions. Spire Marketing also has concentrations of credit risk in certain individually significant counterparties. Spire Marketing closely monitors its credit exposure and, although uncollectible amounts have not been significant, increased counterparty defaults are possible and may result in financial losses and/or capital limitations.

Risk management policies, including the use of derivative instruments, may not fully protect Spire Marketing’s sales and results of operations from volatility and may result in financial losses.

In the course of its business, Spire Marketing enters into contracts to purchase and sell natural gas at fixed prices and index-based prices. Commodity price risk associated with these contracts has the potential to impact earnings and cash flows. To minimize this risk, Spire Marketing has a risk management policy that provides for daily monitoring of a number of business measures, including fixed price commitments.

Spire Marketing currently manages the commodity price risk associated with fixed-price commitments for the purchase or sale of natural gas by either closely matching the offsetting physical purchase or sale of natural gas at fixed prices or through the use of natural gas futures, options, and swap contracts traded on or cleared through the New York Mercantile Exchange, Inc. and/or the Intercontinental Exchange to lock in margins. These exchange-traded/cleared contracts may be designated as cash flow hedges of forecasted transactions. However, market conditions and regional price changes may cause ineffective portions of matched positions to result in financial losses. Additionally, to the extent that Spire Marketing’s natural gas contracts are classified as trading activities or do not otherwise qualify for the normal purchases or normal sales designation (or the designation is not elected), the contracts are recorded as derivatives at fair value each period. Accordingly, the associated gains and losses are reported directly in earnings and may cause volatility in results of operations. Gains or losses (realized and unrealized) on certain wholesale purchase and sale contracts, consisting of those classified as trading activities, are required to be presented on a net basis (instead of a gross basis) in the statements of consolidated income. Such presentation could result in volatility in the Company’s operating revenues.

As a natural gas market participant, Spire Marketing is subject to applicable FERC- and Commodity Futures Trading Commission (CFTC)-administered statutes, rules, regulations and orders, including those directed generally to prevent manipulation of or fraud involving natural gas physical transactions and financial instruments, such as futures, options and swaps. Spire Marketing could be subject to substantial penalties and fines by the FERC or CFTC, or both, for failure to comply with such rules.

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Spire Marketing’s ability to meet its customers’ natural gas requirements may be impaired if contracted gas supplies and interstate pipeline services are not available or delivered in a timely manner.

Spire Marketing’s ability to deliver natural gas to its customers is contingent upon the ability of natural gas producers, other gas marketers, and interstate pipelines to fulfill delivery obligations to Spire Marketing under firm contracts. To the extent that it is unable to obtain the necessary supplies, Spire Marketing’s financial position and results of operations may be adversely impacted.

Regulatory and legislative developments pertaining to the energy industry may adversely impact Gas Marketing’s results of operations and financial condition.

The Gas Marketing business is non-regulated, in that the rates it charges its customers are not currently established by or subject to approval by any regulatory body with jurisdiction over its business. However, it is subject to various laws and regulations affecting the energy industry. New regulatory and legislative actions may adversely impact Gas Marketing’s results of operations and financial condition by potentially reducing customer growth opportunities and/or increasing the costs of doing business.

Gas Marketing uses bilateral contracts and derivative instruments such as futures contracts, options and swaps to hedge or mitigate ongoing commercial risks. Most standardized swaps, under the Dodd-Frank Act, are required to be cleared through a registered clearing facility and traded on a designated exchange or swap execution facility, subject to certain exceptions. In addition, the CFTC’s rules require companies, including Spire Marketing, to maintain regulatory records of swap transactions, and to report swaps to centralized swap data repositories, among other compliance obligations. Although Spire Marketing may qualify for exceptions to certain of these CFTC rules, its derivatives counterparties are subject to capital, margin, documentation and business conduct requirements imposed as a result of the Dodd-Frank Act. These obligations may increase transaction costs and may make it more difficult for Spire Marketing to enter into hedging transactions on favorable terms or affect the number and/or creditworthiness of available swap counterparties. Spire Marketing’s inability to enter into derivatives instruments or other commercial risk hedging transactions on favorable terms, or at all, could increase operating expenses and expose it to unhedged commercial risks, including potential adverse changes in commodity prices.

In October 2020, the CFTC finalized its rules that modify and expand the applicability of speculative position limits on the amounts of certain futures contracts (including options thereon), cash-settled “lookalike” contracts for or linked to the commodities underlying the foregoing futures contracts, as well as economically equivalent swaps containing “identical material” contractual specifications, terms and conditions as the foregoing contracts. While Spire Marketing anticipates qualifying for a bona fide hedging exemption from such limits, the CFTC’s final rules and earlier adopted aggregation rules may cause Spire Marketing’s hedging strategies described above to be limited if Spire Marketing is unable to qualify for an exemption.

GENERAL RISK FACTORS

Unexpected losses may adversely affect Spire’s or its subsidiaries’ financial condition and results of operations.

As with most businesses, there are operations and business risks inherent in the activities of Spire’s subsidiaries. If, in the normal course of business, Spire or any of its subsidiaries becomes a party to litigation, such litigation could result in substantial monetary judgments, fines, or penalties or be resolved on unfavorable terms. In accordance with customary practice, Spire and its subsidiaries maintain insurance against a significant portion of, but not all, risks and losses. In addition, in the normal course of its operations, Spire and its subsidiaries may be exposed to loss from other sources, such as bad debt expense or the failure of a counterparty to meet its financial obligations. Spire and its operating companies employ many strategies to gain assurance that such risks are appropriately managed, mitigated, or insured, as appropriate. To the extent a loss is not fully covered by insurance or other risk mitigation strategies, that loss could adversely affect the Company’s and/or its subsidiaries’ financial condition and results of operations.

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Catastrophic events may adversely affect the Company’s facilities and operations.

Catastrophic events such as fires, earthquakes, explosions, floods, tornadoes, hurricanes, tropical storms, winter storms, terrorist acts, acts of civil unrest, pandemic illnesses or other similar occurrences could adversely affect the Utilities’ facilities and operations, as well as those of Spire STL Pipeline and Spire Storage. The Utilities have emergency planning and training programs in place to respond to events that could cause business interruptions. However, unanticipated events or a combination of events, failure in resources needed to respond to events, or slow or inadequate response to events may have an adverse impact on the operations, financial condition, and results of operations of the Company and its subsidiaries. To the extent the impacts of such catastrophic events are not covered by insurance or recovered in rates, this could have a material adverse effect on the Company's financial condition and results of operations.

Increased dependence on technology may hinder Spire’s and its subsidiaries’ business operations and adversely affect their financial condition and results of operations if such technologies fail.

Spire and its subsidiaries have implemented or acquired a variety of technological tools including both Company-owned information technology and technological services provided by outside parties. These tools and systems support critical functions including Spire and its subsidiaries’ integrated planning, scheduling and dispatching of field resources, its automated meter reading system, customer care and billing, procurement and accounts payable, operational plant logistics, management reporting, and external financial reporting. The failure of these or other similarly important technologies, or the Company’s or its subsidiaries’ inability to have these technologies supported, updated, expanded, or integrated into other technologies, could hinder their business operations and, to the extent not covered by insurance, could adversely impact their financial condition and results of operations.

Although the Company and its subsidiaries have, when possible, developed alternative sources of technology and built redundancy into their computer networks and tools, there can be no assurance that these efforts to date would protect against all potential issues related to the loss of any such technologies or the Utilities’ use of such technologies.

A cyberattack may disrupt Spire’s operations or lead to a loss or misuse of confidential and proprietary information or potential liability.

The Company and its subsidiaries are subject to cybersecurity risks primarily related to breaches of security pertaining to sensitive customer, employee, and vendor information maintained by the Company, its subsidiaries, or its third-party vendors in the normal course of business, as well as breaches in the technology that manages natural gas distribution operations and other business processes. A loss of confidential or proprietary data or security breaches of technology for operations or business processes could adversely affect the Company’s and its subsidiaries’ reputation, diminish customer confidence, disrupt operations, and subject the Company and its subsidiaries to possible financial liability, any of which could have a material effect on the Company’s and its subsidiaries’ financial condition and results of operations.

The Company acknowledges that increased dependence on technology increases the Company’s exposure to cyberattack. The Company and its subsidiaries closely monitor both preventive and detective measures to manage these risks and maintain cyber risk insurance to mitigate a significant portion, but not all, of these risks and losses. To the extent that the occurrence of any of these cyber events is not covered by insurance, it could adversely affect the Company’s and its subsidiaries’ financial condition and results of operations.

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Workforce risks may affect the Company’s financial results.

The Company and its subsidiaries are subject to various workforce risks, including, but not limited to, the risk that it will be unable to attract and retain qualified personnel; that it will be unable to effectively transfer to new personnel the knowledge and expertise of an aging workforce as those workers retire; and that it will be unable to reach collective bargaining arrangements with the unions that represent certain of its workers, which could result in work stoppages.

Resources expended to pursue or integrate business acquisitions, investments or other business arrangements may adversely affect Spire’s financial position and results of operations and return on investments made may not meet the Company’s expectations.

From time to time, Spire may seek to grow through strategic acquisitions, investments or other business arrangements. Attractive acquisition and investment opportunities may be difficult to complete on economically acceptable terms. It is possible for Spire to expend considerable resources pursuing acquisitions and investments but, for a variety of reasons, decide not to move forward. Similarly, investment opportunities may be hindered or halted by regulatory or legal actions. To the extent that acquisitions or investments are made, such transactions involve a number of risks, including but not limited to, the assumption of material liabilities, the diversion of management’s attention from daily operations, difficulties in assimilation and retention of employees, securing adequate capital to support the transaction, and regulatory approval. Uncertainties exist in assessing the value, risks, profitability, and liabilities associated with certain businesses or assets and there is a possibility that anticipated operating and financial efficiencies expected to result from an acquisition or investment do not develop. Additionally, there are no assurances that resources expended will achieve their intended result.

The failure to complete an acquisition successfully or to integrate acquisitions or investments it may undertake could have an adverse effect on the Spire’s financial condition and results of operations and the market’s perception of the Company’s execution of its strategy. To the extent Spire engages in any of the above activities together with or through one or more of its subsidiaries, including the Utilities, such subsidiaries may face the same risks.

Changes in accounting standards may adversely impact the Company’s financial condition and results of operations.

Spire and its subsidiaries are subject to changes in U.S. generally accepted accounting principles (GAAP), SEC regulations and other interpretations of financial reporting requirements for public utilities. Neither the Company nor any of its subsidiaries have any control over the impact these changes may have on their financial condition or results of operations nor the timing of such changes. The potential issues associated with rate-regulated accounting, along with other potential changes to GAAP that the U.S. Financial Accounting Standards Board (FASB) continues to consider may be significant.

Item 1B. Unresolved Staff Comments

None.

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Item 2. Properties

Spire

Refer to the information below about the principal properties of Spire Missouri and Spire Alabama. The Spire EnergySouth utilities own more than 5,000 miles of pipelines. Other properties of Spire and its subsidiaries do not constitute a significant portion of its properties. The current leases for office space in downtown St. Louis commenced in early 2015, with terms ranging from 10 to 20 years, with multiple renewal options. For further information on leases see Note 17, Leases, of the Notes to Financial Statements in Item 8.

Spire Missouri

The principal properties of Spire Missouri consist of its gas distribution system, which includes more than 31,000 miles of main and related service lines, odorization and regulation facilities, and customer meters. The mains and service lines are located in municipal streets or alleys, public streets or highways, or on lands of others for which Spire Missouri has obtained the necessary legal rights to place and operate its facilities on such property. Spire Missouri has an underground natural gas storage facility, several operating centers, and other related properties. Substantially all of Spire Missouri’s utility plant is subject to the liens of its mortgage. All the properties of Spire Missouri are held in fee, by easement, or under lease agreements.

Spire Alabama

The properties of Spire Alabama consist primarily of its gas distribution system, which includes more than 24,000 miles of main and related service lines, odorization and regulation facilities, and customer meters. The mains and service lines are located in municipal streets or alleys, public streets or highways, or on lands of others for which Spire Alabama has obtained the necessary legal rights to place and operate its facilities on such property. Spire Alabama also has four LNG facilities, several operating centers, and other related properties. All of the properties of Spire Alabama are held in fee, by easement, or under lease agreements.

Item 3. Legal Proceedings

For a description of pending regulatory matters of Spire, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8. For a description of environmental and other legal matters, see Contingencies in Note 16 of the Notes to Financial Statements in Item 8.

Item 4. Mine Safety Disclosures

Not applicable.

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INFORMATION ABOUT OUR EXECUTIVE OFFICERS – Listed below are executive officers as defined by the SEC for Spire. Their ages, at September 30, 2022, and positions are listed below along with their business experience during the past five years.

Name	Age	Position with Company (1)	Appointed (2)
S. Sitherwood	62	President and Chief Executive Officer	February 2012
		Chairman of the Board, Spire Missouri	January 2015
		Chairman of the Board, Spire Alabama	September 2014
S. L. Lindsey	56	Executive Vice President, Chief Operating Officer	January 2020
		Executive Vice President, Chief Executive Officer of Gas Utilities and Distribution Operations (until December 2019)	October 2012
		Chief Executive Officer, Spire Missouri	December 2018
		Chief Executive Officer, Spire Alabama	September 2014
S. P. Rasche	62	Executive Vice President and Chief Financial Officer	November 2013
		Chief Financial Officer, Spire Missouri (until January 2020)	May 2012
		Chief Financial Officer, Spire Alabama (until January 2020)	September 2014
M. C. Darrell	64	Senior Vice President, Chief Legal and Compliance Officer	May 2012
M. C. Geiselhart	63	Senior Vice President, Chief Strategy and Corporate Development Officer	January 2015
S. B. Carter	50	Senior Vice President, Chief Operating Officer of Distribution Operations	January 2019
		Senior Vice President, Commercial Operations (until December 2018)	January 2017
		President, Spire Missouri	December 2018

(1)	The information provided relates to the Company and its principal subsidiaries. Many of the executive officers have served or currently serve as officers or directors for other subsidiaries of the Company.
(2)	Officers of Spire are normally reappointed by its Board of Directors in November of each year. Officers of Spire Missouri and Spire Alabama are normally reappointed by their boards of directors in January of each year.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

Spire

Spire’s common stock trades on The New York Stock Exchange (NYSE) under the symbol “SR”. The number of holders of record as of November 11, 2022 was 2,636.

Dividends are payable on the Company’s common stock at the discretion of its Board of Directors (the “Board”). Spire, and Spire Missouri prior to the holding company’s formation in 2000, has paid common stock dividends continuously since 1946, with 2022 marking the 19th consecutive year of increasing dividends on an annualized basis. Although the Board expects to continue paying dividends on the common stock for the foreseeable future, the declaration of dividends is not guaranteed. The amount of dividends on the common stock, if any, will depend upon the Company’s financial condition, results of operations, capital requirements, and other factors.

Performance Graph

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN*

September 30	2017		2018		2019		2020		2021		2022
Spire Inc.	$	100.00	$	101.64	$	124.10	$	78.42	$	93.66	$	99.28
S&P 500 Utilities Index		100.00		102.93		130.82		124.32		138.01		145.71
S&P 500 Index		100.00		117.91		122.93		141.55		184.02		155.55

* Cumulative total return is based on a $100 investment on September 30, 2017, assuming reinvestment of dividends.

The S&P 500 Utilities Index is comprised of 29 utilities heavily weighted to large capitalization (median market cap of $21.9 billion) electric utilities. In 2020, stocks of small and mid cap electric utilities and gas utility companies (like Spire) in general traded lower relative to the large cap electric sector. Since then, Spire has outperformed both the S&P 500 Utilities and the S&P 500 Indices.

For disclosures related to securities authorized for issuance under equity compensation plans, see Note 3, Stock-Based Compensation, of the Notes to Financial Statements in Item 8.

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During the three months ended September 30, 2022, the only repurchases of the Company’s common stock 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
July 1, 2022 - July 31, 2022	182	$76.32	—	—
August 1, 2022 - August 31, 2022	—	—	—	—
September 1, 2022 - September 30, 2022	340	68.87	—	—
Total	522	$71.47	—	—

Spire Missouri

Spire Missouri common stock is owned by its parent, Spire Inc., and is not traded on any stock exchange.

Spire Missouri’s mortgage contains restrictions on its ability to pay cash dividends on its common stock, as described in further detail in Note 5, Shareholders’ Equity, of the Notes to Financial Statements in Item 8. As of September 30, 2022 and 2021, the amount under the mortgage’s formula that was available to pay dividends was $1,579.4 million and $1,413.4 million, respectively.

Spire Alabama

Spire Alabama common stock is owned by its parent, Spire Inc., and is not traded on any stock exchange.

Item 6. (Reserved)

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Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

(Dollars in millions, except per share and per unit amounts)

INTRODUCTION

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 are collectively referred to as the “Utilities.” The subsidiaries of Spire EnergySouth are Spire Gulf and Spire Mississippi. 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. Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

Reference is made to “Item 1A. Risk Factors” and “Forward-Looking Statements,” which describe important factors that could cause actual results to differ from expectations and non-historical information contained herein. In addition, the following discussion should be read in conjunction with the audited financial statements and accompanying notes thereto of Spire, Spire Missouri and Spire Alabama included in “Item 8. Financial Statements and Supplementary Data.”

OVERVIEW

The Company has two reportable segments: Gas Utility and Gas Marketing. Nearly all of Spire’s earnings are derived 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.

Other

Other components of the Company’s consolidated information include:

•  Spire STL Pipeline, a subsidiary of Spire providing interstate natural gas pipeline transportation services;

•  Spire Storage, a subsidiary of Spire providing interstate natural gas storage services;

•  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.

Business Evaluation Factors

Based on the nature of the business of the Company and its subsidiaries, as well as current economic conditions, management focuses on several key variables in evaluating the financial condition and results of operations and managing the business.

For the Gas Utility segment, these include:

•  the Utilities’ ability to recover from their customers the costs of purchasing and distributing natural gas;

•  the impact of weather and other factors, such as customer conservation, on revenues and expenses;

•  changes in the regulatory environment at the federal, state, and local levels, as well as decisions by regulators, that impact the Utilities’ ability to earn the authorized rate of return and recover prudent costs in each of the service territories they serve;

•  the Utilities’ ability to access credit markets and maintain working capital sufficient to meet operating requirements;

•  the effect of natural gas price volatility on the business; and

•  the ability to manage costs, integrate and standardize operations, and upgrade infrastructure.

In the Gas Marketing segment, these include:

•  the risks of competition;

•  fluctuations and volatility in natural gas prices;

•  the changing flow and availability of natural gas;

•  new national infrastructure projects;

•  the ability to procure firm transportation and storage services at reasonable rates;

•  credit and/or capital market access; and

•  counterparty risks.

Further information regarding how management seeks to manage these key variables is discussed below.

Gas Utility

The Utilities seek to provide reliable natural gas services at a reasonable cost, while maintaining and building secure and dependable infrastructures. The Utilities’ strategies focus on improving both performance and the ability to recover their authorized distribution costs and rates of return. The Utilities’ distribution costs are the essential, primarily fixed, expenditures they must incur to operate and maintain more than 60,000 miles of mains and services comprising their natural gas distribution systems and related storage facilities.

The Utilities’ distribution costs include wages and employee benefit costs, depreciation and maintenance expenses, and other regulated utility operating expenses, excluding natural and propane gas expense. Distribution costs are considered in the rate-making process, and recovery of these types of costs is included in revenues generated through the Utilities’ tariff rates. Spire Missouri’s tariff rates are approved by the MoPSC, whereas Spire Alabama’s tariff rates are approved by the APSC. Spire Gulf and Spire Mississippi have tariff rates that are approved by the APSC and MSPSC, respectively.

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Spire Missouri and Spire Alabama also have off-system sales and capacity release income streams that are regulated by tariff but remain subject to fluctuations in market conditions. Some of the factors impacting the level of off-system sales include the availability and cost of Spire’s natural gas supply, the weather in its service areas and the weather in other markets. When Spire’s service areas experience warmer-than-normal weather while other markets experience colder weather or supply constraints, some of Spire’s natural gas supply is available for sale to third parties not on Spire’s system.

The Utilities work actively to reduce the impact of wholesale natural gas price volatility on their costs by strategically structuring their natural gas supply portfolios to increase their gas supply availability and pricing alternatives. They may also use derivative instruments to hedge against significant changes in the commodity price of natural gas. Nevertheless, the overall cost of purchased gas remains subject to fluctuations in market conditions. The Purchased Gas Adjustment (PGA) clause of Spire Missouri, Spire Gulf and Spire Mississippi and the Gas Supply Adjustment (GSA) rider of Spire Alabama allow the Utilities to flow through to customers, subject to prudence review by the public service commissions, the cost of purchased gas supplies, including costs, cost reductions and related carrying costs associated with the use of derivative instruments to mitigate volatility in the cost of natural gas. As of September 30, 2022, Spire Missouri had active derivative positions, but Spire Alabama has had no gas supply derivative instrument activity since 2010. Except in certain situations discussed under the caption “—The Utilities’ ability to meet their customers’ natural gas requirements may be impaired if contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner” under Item 1A, Risk Factors, and in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8, the Utilities believe they will continue to be able to obtain sufficient gas supply. The price of natural gas supplies and other economic conditions may affect sales volumes, due to the conservation efforts of customers, and cash flows associated with the timing of collection of gas costs and related accounts receivable from customers.

The Utilities rely on short-term credit and long-term capital markets, as well as cash flows from operations, to satisfy their seasonal cash requirements and fund their capital expenditures. The Utilities access the commercial paper market through a program administered by the holding company, which then loans borrowed funds to the Utilities. The Utilities directly access the long-term bond market. Access to debt markets is dependent on current conditions in the credit and capital markets. Management focuses on maintaining a strong balance sheet and believes the Utilities currently have adequate access to credit and capital markets and will have sufficient capital resources to meet their foreseeable obligations. See the “Capital Resources” section for additional information.

Gas Marketing

Spire Marketing utilizes its natural gas supply agreements, transportation agreements, park and loan agreements, storage agreements and other executory contracts to support a variety of services to its customers at competitive prices. It closely monitors and manages the natural gas commodity price and volatility risks associated with providing such services to its customers through the use of a variety of risk management activities, including the use of exchange-traded/cleared derivative instruments and other contractual arrangements. Spire Marketing is committed to managing commodity price risk while it seeks to expand the services that it now provides. Nevertheless, income from the Gas Marketing operations is subject to more fluctuations in market conditions than the Utilities’ operations.

The Gas Marketing business is directly impacted by the effects of competition in the marketplace, the impacts of new infrastructure, surplus natural gas supplies, and the addition of new demand from exports, power generation and industrial load. Spire Marketing’s management expects a growing need for marketing services across the country as customers manage seasonal variability and marketplace volatility.

In addition to its own operating cash flows, Spire Marketing relies on Spire’s parental guaranties to secure its purchase and sales obligations of natural gas, and it also has access to Spire’s liquidity resources. A large portion of Spire Marketing’s receivables are from customers in the energy industry. It also enters into netting arrangements with many of its energy counterparties to reduce overall credit and collateral exposure. On a net dollar exposure basis, the majority of Spire Marketing’s customers are utilities or utility affiliates. Although Spire Marketing’s uncollectible amounts are closely monitored and have not been significant, increases in uncollectible amounts from customers are possible and could adversely affect Spire Marketing’s liquidity and results of operations.

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Spire Marketing carefully monitors the creditworthiness of counterparties to its transactions. It performs in-house credit reviews of potential customers and may require credit assurances such as prepayments, letters of credit or parental guaranties when appropriate. Credit limits for customers are established and monitored.

Spire Marketing cannot be certain that all of its wholesale purchase and sale transactions will settle physically. As such, these transactions are designated as trading activities for financial reporting purposes, due to their settlement characteristics. Results of operations from trading activities are reported on a net basis in natural gas expenses.

In the course of its business, Spire Marketing enters into commitments associated with the purchase or sale of natural gas. In accordance with U.S. GAAP, some of its purchase and sale transactions are not recognized in earnings until the natural gas is physically delivered, while other energy-related transactions, including those designated as trading activities, are required to be accounted for as derivatives with the changes in their fair value (representing unrealized gains or losses) recorded in earnings in periods prior to settlement. Because related transactions of a purchase and sale strategy may be accounted for differently, there may be timing differences in the recognition of earnings under GAAP and economic earnings realized upon settlement. The Company reports both GAAP and net economic earnings (non-GAAP), as discussed in the section “Non-GAAP Measures”.

NON-GAAP MEASURES

Net income, earnings per share and operating income reported by Spire, Spire Missouri and Spire Alabama are determined in accordance with 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 the 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. In addition, net economic earnings per share would exclude the impact, in the fiscal year of issuance, of any shares issued to finance acquisitions that have yet to be included in net economic earnings.

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.

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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.

EARNINGS

This section contains discussion and analysis of the results for the year ended September 30, 2022 compared to the results for the year ended September 30, 2021. The discussion and analysis of the results for the year ended September 30, 2021 compared to the results of the year ended September 30, 2020 can be found in Part II, Item 7 of Spire Inc.’s fiscal 2021 Annual Report on Form 10-K, filed with the U.S. Securities and Exchange Commission (SEC) on November 22, 2021.

Overview

The past two years have offered numerous challenges. During severe winter weather in fiscal 2021, we were successful in providing safe, reliable service for our service areas in addition to driving value from investments in transportation and storage capacity we made at Spire Marketing. With regard to the Spire STL Pipeline, while operating under a temporary certificate, we continue to work with regulators and constituents regarding obtaining a permanent certificate. As discussed in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8, we also received an order in our  2021 Missouri rate review which was inconsistent with precedent established by the MoPSC in prior rate cases.

Against this backdrop, the Company continued the important work of upgrading our Utilities’ infrastructure to make our system safer, more reliable and environmentally sustainable. We also further deployed technology, including ultrasonic meters, to improve our service operations and deliver on improved experience for the homes and business we serve.

On the Gas Utility regulatory front, we continue to make progress. Spire Missouri filed a new general rate case on April 1, 2022, seeking full recovery of its updated cost of service, deferred overhead costs, and increased capital investment, as well as a fair and reasonable rate of return. The filing requested a $152 million revenue increase, reflecting a $3.4 billion rate base and a rate of return based on a requested return on equity of 10.5% and a 55% equity capitalization. After local public hearings were completed, the parties reached a Full Unanimous Stipulation and Agreement to resolve all issues in the case which was filed with the MoPSC on November 4, 2022. A hearing regarding this stipulation is currently set for November 18.

This fiscal year also saw progress in Spire's midstream operations. Spire Storage received FERC approval to expand capacity and increase pipeline connectivity at certain of Spire Storage’s natural gas storage facilities in Wyoming. On August 26, 2022, the Company announced that capital expenditures in support of this project will total $195.0 through fiscal years 2023 into 2025.

The following sections present and discuss the financial metrics in total and by registrant and segment.

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Spire

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

													Per
	Gas			Gas						Consol-			Diluted
	Utility			Marketing			Other			idated			Share**
Year Ended September 30, 2022
Net Income (Loss) [GAAP]	$	198.6		$	35.6		$	(13.4	)	$	220.8		$	3.95
Adjustments, pre-tax:
Fair value and timing adjustments		—			(11.4	)		—			(11.4	)		(0.22	)
Income tax effect of adjustments*		4.1			2.8			—			6.9			0.13
Net Economic Earnings (Loss) [Non-GAAP]	$	202.7		$	27.0		$	(13.4	)	$	216.3		$	3.86
Year Ended September 30, 2021
Net Income (Loss) [GAAP]	$	237.2		$	44.8		$	(10.3	)	$	271.7		$	4.96
Adjustments, pre-tax:
Missouri regulatory adjustments		(9.0	)		—			—			(9.0	)		(0.17	)
Fair value and timing adjustments		0.3			3.0			—			3.3			0.06
Acquisition, divestiture and restructuring activities		—			—			(1.3	)		(1.3	)		(0.02	)
Income tax effect of adjustments*		2.1			(0.8	)		0.3			1.6			0.03
Net Economic Earnings (Loss) [Non-GAAP]	$	230.6		$	47.0		$	(11.3	)	$	266.3		$	4.86
Year Ended September 30, 2020
Net Income (Loss) [GAAP]	$	213.6		$	7.0		$	(132.0	)	$	88.6		$	1.44
Adjustments, pre-tax:
Impairments		—			—			148.6			148.6			2.89
Fair value and timing adjustments		(0.3	)		2.8			—			2.5			0.05
Income tax effect of adjustments*		0.1			(0.7	)		(31.3	)		(31.9	)		(0.62	)
Net Economic Earnings (Loss) [Non-GAAP]	$	213.4		$	9.1		$	(14.7	)	$	207.8		$	3.76

* Income tax effect is calculated by applying federal, state and local income tax rates applicable to ordinary income to the amounts of the pre-tax reconciling items and then adding any estimated effects of enacted state or local income tax laws for periods before the related effective date and, in the case of fiscal 2022, includes the $4.1 Spire Missouri regulatory adjustment discussed below.

** 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			Gas
	Utility			Marketing			Other		Eliminations			Consolidated
Year Ended September 30, 2022
Operating Income	$	339.9		$	46.9		$	21.4	$	—		$	408.2
Operation and maintenance expenses		413.3			14.6			37.1		(15.4	)		449.6
Depreciation and amortization		227.9			1.4			8.0		—			237.3
Taxes, other than income taxes		176.2			0.6			2.7		—			179.5
Less: Gross receipts tax expense		(109.6	)		(0.2	)		—		—			(109.8	)
Contribution Margin [Non-GAAP]		1,047.7			63.3			69.2		(15.4	)		1,164.8
Natural gas costs		788.8			171.4			—		(36.3	)		923.9
Gross receipts tax expense		109.6			0.2			—		—			109.8
Operating Revenues	$	1,946.1		$	234.9		$	69.2	$	(51.7	)	$	2,198.5

	Gas			Gas
	Utility			Marketing			Other		Eliminations			Consolidated
Year Ended September 30, 2021
Operating Income	$	374.0		$	58.5		$	17.7	$	—		$	450.2
Operation and maintenance expenses		422.2			17.1			40.2		(13.7	)		465.8
Depreciation and amortization		204.4			1.2			7.5		—			213.1
Taxes, other than income taxes		157.0			0.9			2.2		—			160.1
Less: Gross receipts tax expense		(93.9	)		(0.1	)		—		—			(94.0	)
Contribution Margin [Non-GAAP]		1,063.7			77.6			67.6		(13.7	)		1,195.2
Natural gas costs		961.7			18.8			0.1		(34.3	)		946.3
Gross receipts tax expense		93.9			0.1			—		—			94.0
Operating Revenues	$	2,119.3		$	96.5		$	67.7	$	(48.0	)	$	2,235.5

	Gas			Gas
	Utility			Marketing			Other			Eliminations			Consolidated
Year Ended September 30, 2020
Operating Income (Loss)	$	334.3		$	9.3		$	(137.2	)	$	—		$	206.4
Operation and maintenance expenses		421.3			11.8			38.2			(12.7	)		458.6
Depreciation and amortization		189.7			0.6			7.0			—			197.3
Taxes, other than income taxes		146.5			1.1			0.8			—			148.4
Impairment loss		—			—			148.6			—			148.6
Less: Gross receipts tax expense		(91.1	)		(0.4	)		—			—			(91.5	)
Contribution Margin [Non-GAAP]		1,000.7			22.4			57.4			(12.7	)		1,067.8
Natural gas costs		660.2			65.1			0.4			(29.6	)		696.1
Gross receipts tax expense		91.1			0.4			—			—			91.5
Operating Revenues	$	1,752.0		$	87.9		$	57.8		$	(42.3	)	$	1,855.4

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Select changes from the year ended September 30, 2021 to the year ended September 30, 2022 are summarized in the following table and discussed below.

	Gas			Gas			Other, Net of
Changes from FY21 to FY22	Utility			Marketing			Eliminations			Consolidated
Net Income	$	(38.6	)	$	(9.2	)	$	(3.1	)	$	(50.9	)
Net Economic Earnings [Non-GAAP]		(27.9	)		(20.0	)		(2.1	)		(50.0	)
Operating Revenues		(173.2	)		138.4			(2.2	)		(37.0	)
Contribution Margin [Non-GAAP]		(16.0	)		(14.3	)		(0.1	)		(30.4	)
Operating Expenses		(8.9	)		(2.5	)		(4.8	)		(16.2	)
Interest Expense											13.2
Income Tax											(9.6	)

The increase in interest expense was primarily driven by higher levels of short-term borrowings in fiscal 2022, combined with the impact of net long-term debt issuances and higher average short-term interest rates. Short-term rates averaged 1.1% in fiscal 2022 compared to 0.4% for fiscal 2021.

The reduction in income taxes was primarily attributable to the lower pre-tax book income in 2022, partly offset by a $4.1 charge resulting from Tax Cuts and Jobs Act (TCJA) reconciliations from the 2021 Missouri rate order that was issued late in the first quarter of fiscal 2022.

Gas Utility

The $38.6 decrease in Gas Utility net income primarily reflects decreases of $29.2 and $5.3 at Spire Missouri and Spire Alabama, respectively, while the $27.9 decrease in net economic earnings for the segment reflects decreases of $18.5 and $5.3 at Spire Missouri and Spire Alabama, respectively. These results are described in further detail below.

The decrease in Gas Utility operating revenues for fiscal 2022 was attributable to the following factors: 

Spire Missouri – Fiscal 2021 OFO charges	$	(195.8	)
Spire Missouri – Off-system sales and capacity release		(120.1	)
Spire Missouri and Spire Alabama – Volumetric usage (net of weather mitigation)		(9.9	)
Spire Missouri and Spire Alabama – Higher PGA/GSA gas cost recoveries		99.9
Spire Missouri – 2021 rate order effects		18.1
Spire Missouri and Spire Alabama – Higher gross receipts taxes		15.7
Spire Alabama – Off-system sales and capacity release		9.8
Spire Alabama – RSE: net adjustments		4.3
All other factors		4.8
Total Variation	$	(173.2	)

The decrease in revenues was driven primarily by a $199.8 decrease in Spire Missouri gas costs (including $195.8 of cover charges and OFO penalties to certain wholesale customers in the prior year), a $120.1 decrease in Spire Missouri off-system sales, and higher segment weather/volumetric impacts of $9.9. These negative impacts were partly offset by higher PGA/GSA gas cost recoveries of $99.9, an $18.1 increase in revenues as a result of the Spire Missouri 2021 rate order, higher segment gross receipts taxes of $15.7, a $9.8 increase in Spire Alabama off-system sales, and a $4.3 increase in revenues due to Spire Alabama’s rate adjustments under the RSE mechanism.

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

Spire Missouri – Off-system sales and capacity release	$	(26.3	)
Spire Missouri and Spire Alabama – Volumetric usage (net of weather mitigation)		(9.2	)
Spire Missouri – 2021 rate order effects		18.1
Spire Alabama – RSE: net adjustments		3.8
Spire Alabama – Off-system and capacity release		1.5
All other factors		(3.9	)
Total Variation	$	(16.0	)

The contribution margin decrease resulted primarily from lower Missouri off-system sales, Spire Missouri and Spire Alabama volumetric impacts of $9.2, partly offset by an $18.1 increase resulting from the 2021 Missouri rate order, Spire Alabama rate adjustments under the RSE mechanism, and higher volumetric margins. The lower off-system sales and volumetric impacts were primarily the result of the extreme weather conditions from Winter Storm Uri in February 2021.

Reported O&M expenses decreased $8.9. O&M decreased by $9.8 after excluding the impacts of the Non-service Cost Transfer of $4.4, the $9.0 attributable to the Missouri Supreme Court ruling that partially reversed 2018 rate order pension cost disallowances, and $3.7 due to one-time cost adjustments relating to stipulations settled in the 2021 Spire Missouri rate order. This decrease is due primarily to lower employee-related costs and lower bad debt expense. Depreciation and amortization expenses for the year ended September 30, 2022 increased $24.2 from the prior year, principally the result of continued infrastructure capital spending, with $16.1 of the increase attributable to Spire Missouri and $4.7 attributable to Spire Alabama. Included in the Spire Missouri increase is a $3.4 charge pertaining to meter cost recovery that was disallowed by the MoPSC. Taxes, other than income taxes, increased $19.2, and were driven by the higher pass-through gross receipts taxes mentioned earlier, combined with higher property taxes resulting from the continued infrastructure build-out by the utilities.

Gas Marketing

Both net income and net economic earnings reflect the strong operating results in the prior year, driven by storage positions that resulted in optimization of market conditions in the second quarter of fiscal 2021 due to extreme weather as a result of Winter Storm Uri. Current year incremental optimization of storage and transportation assets in the Southeast during the third and fourth quarters of fiscal 2022 and favorable fair value adjustments only partly offset the benefits from the extreme weather in the prior year.

The variance in revenues primarily reflects higher commodity pricing in fiscal 2022.

Gas Marketing contribution margin decreased $14.3 from the same period last year, driven principally by strong second quarter results in fiscal 2021. During the second quarter of fiscal 2021, the February cold weather events drove significantly higher regional basis differentials and volumes, which were only partly offset by favorable year-over-year fair value adjustments of $14.4 and incremental optimization of storage and transportation assets in the Southeast during the third and fourth quarters of fiscal 2022.

Other

The Company’s other non-utility activities generated a $3.1 higher net loss for fiscal 2022. Included in those results were higher interest and corporate costs in the current year. Other operating revenue increased $1.5, driven principally by Spire STL Pipeline and Spire Storage. Other operating expenses were $3.1 lower than the prior year, primarily reflecting lower current year operating expenses at Spire Storage and STL Pipeline.

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Spire Missouri

	Year Ended September 30,
	2022			2021
Operating Income	$	204.0		$	228.6
Operation and maintenance expenses		255.7			261.1
Depreciation and amortization		145.3			129.2
Taxes, other than income taxes		129.0			110.9
Less: Gross receipts tax expense		(79.6	)		(64.3	)
Contribution Margin [Non-GAAP]		654.4			665.5
Natural gas costs		587.0			786.8
Gross receipts tax expense		79.6			64.3
Operating Revenues	$	1,321.0		$	1,516.6
Net Income	$	114.9		$	144.1

The $195.6 decrease in operating revenues reflects a $120.1 decrease in 0ff-system sales and lower gas costs of $109.5 (as commodity cost recovery increases in the current year of $86.3 were more than offset by last year's $195.8 of cover charges and OFO penalties to certain wholesale customers). Partly offsetting these negative impacts were an $18.1 increase in operating revenues due to the 2021 Missouri rate order, a $15.3 increase in gross receipts taxes, and a $3.4 increase in volumetric impacts as underlying increases in economic activity more than offset the impact of warmer weather in the current year. 

Temperatures in Spire Missouri’s service areas during fiscal 2022 were 5.7% warmer than during fiscal 2021 and 9.5% warmer than normal. The Spire Missouri total system volume sold and transported was 1,602.8 million centum of cubic feet (CCF) for the year ended September 30, 2022, compared with 1,666.9 million CCF last year. Total off-system volume sold and transported was 19.1 million CCF for fiscal 2022, compared with 21.9 million for fiscal 2021. 

Contribution margin decreased $11.1 from the prior year. The variance was attributable to a $26.3 decrease in off-system sales and $2.0 lower volumetric margins (both principally due to the extreme weather in February of the prior year), which were only partly offset by the previously mentioned $18.1 increase relating to the 2021 Missouri rate order.

Excluding the Non-service Cost Transfer of $3.5, the Missouri Supreme Court ruling totaling $9.0 and the $3.7 due to one-time cost adjustments relating to stipulations settled in the 2021 Spire Missouri rate order discussed above, O&M expenses during the year ended September 30, 2022, decreased $7.2 from last year. The decrease in O&M was driven by lower employee-related costs. Depreciation increased by $16.1 as a result of continuing capital investment and a $3.4 charge pertaining to disallowed meter cost recovery by the MoPSC. Taxes, other than income taxes, increased $18.1, driven by the higher pass-through gross receipts taxes and higher property taxes resulting from the continued infrastructure build-out.

Spire Missouri’s other expense was $2.0 lower, as the increase of $3.5 due primarily to the Non-service Cost Transfer expense and decreases in the fair value of investments associated with non-qualified employee benefit plans reflecting market conditions were more than offset by miscellaneous income. Interest expense increased $10.6, reflecting higher levels of long-term debt and higher short-term interest rates. Income tax expense for the current year was lower by $4.0, as the impact of lower pre-tax book income was partly offset by a $4.1 charge resulting from TCJA reconciliations from the 2021 Missouri rate order that was completed late in the first quarter of fiscal 2022.

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Spire Alabama

	Year Ended September 30,
	2022			2021
Operating Income	$	112.6		$	117.0
Operation and maintenance expenses		130.1			132.5
Depreciation and amortization		66.8			62.1
Taxes, other than income taxes		38.1			37.1
Less: Gross receipts tax expense		(25.5	)		(25.1	)
Contribution Margin [Non-GAAP]		322.1			323.6
Natural gas costs		161.5			145.3
Gross receipts tax expense		25.5			25.1
Operating Revenues	$	509.1		$	494.0
Net Income	$	68.5		$	73.8

The $15.1 increase in operating revenues reflects a $13.6 increase in gas cost recoveries pursuant to the GSA mechanism, off-system sales in the current year contributing $9.8 to revenue growth, and $4.3 higher net rate adjustments under the RSE mechanism. These favorable impacts were partly offset by a $13.3 reduction attributable to weather/volumetric impacts that were impacted by weather mitigation.

Temperatures in Spire Alabama’s service area during fiscal 2022 were 4.1% warmer than during fiscal 2021 and 9.7% warmer than normal. Spire Alabama’s total system volume sold and transported was 1,010.8 million CCF during the year ended September 30, 2022, compared with 1,009.4 million CCF during the prior year. Off-system sales volume for fiscal 2022 totaled 63.1 million CCF compared with 47.5 million CCF for fiscal 2021.

Contribution margin decreased $1.5, which was principally a result of unfavorable weather/volumetric impacts totaling $7.2. This negative impact was mostly offset by net favorable RSE adjustments of $3.8 and off-system sales contributing $1.5 in growth in fiscal 2022. Excluding the impact of the Non-Service Cost Transfer of $0.9, the decrease in O&M of $1.5 was driven by lower operations and employee-related costs. Depreciation expense was up $4.7 reflecting the continued infrastructure investments being made in the territory. 

LIQUIDITY AND CAPITAL RESOURCES

Recent Cash Flows

	2022			2021			2020
Net cash provided by operating activities	$	55.0		$	249.8		$	469.9
Net cash used in investing activities		(546.7	)		(622.0	)		(631.6	)
Net cash provided by financing activities		500.9			379.4			160.0

Net cash provided by operating activities decreased $194.8 from 2021 to 2022 and decreased $220.1 from 2020 to 2021. In addition to the changes in net income between the respective periods (discussed above), the remaining changes were related to regulatory timing and fluctuations in working capital items, as discussed below in the Future Cash Requirements section. More specifically, when looking at the change from 2020 to 2021, the large increase in accounts receivable was due to the February 2021 cold weather event and the related delayed collections. In addition, this significant cold weather event impacted other areas, including increased inventories to ensure supply and increased accounts payable as related gas costs had risen. For more information, see the discussion of Spire Missouri’s Operational Flow Order in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

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In fiscal 2022, the Company's net cash used in investing activities was $75.3 less than in fiscal 2021, primarily driven by a $72.6 decrease in capital expenditures. The drivers of the lower capital expenditures were a $61.8 spending decline in the Utilities, a $8.1 decline for Spire Storage, and a slight decline at Spire STL Pipeline.

In fiscal 2021, the Company used $9.6 less cash in investing activities than in fiscal 2020, primarily driven by a $13.6 decrease in capital expenditures. The primary driver of the lower capital expenditures was a $53.3 decline related to Spire STL Pipeline and Spire Storage, largely offset by a $42.6 capital spending increase at Gas Utility, where the focus remained on infrastructure upgrades and new business development. 

Net cash provided by financing activities was up $121.5 in fiscal 2022 compared to fiscal 2021. Current year short-term debt, net issuances were $365.5, or $341.5 higher than in fiscal 2021. In addition, the combination of lower net repayments of long-term debt ($59.6) and higher cash generated from the issuance of common stock ($50.9) in fiscal 2022 contributed $110.5 to the year-over-year increase. A significant offset to these increases was a $329.1 decline in cash generated from the issuance of long-term debt, coupled with $8.7 higher common stock dividend payments.

Net cash provided by financing activities was up $219.4 in fiscal 2021 compared to fiscal 2020. In fiscal 2021, long-term debt issuances were $629.1, or $119.1 higher than in fiscal 2020, and the combination of lower net repayments of both long-term and short-term debt in fiscal 2021 contributed $150.8 to the year-over-year increase. Partially offsetting these increases was a $40.1 decline in cash generated from common stock issuances and $5.2 higher common stock dividend payments. 

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 September 30, 2022, are related to capital expenditures, principal and interest payments on long-term debt, natural gas purchase obligations, and dividends.

Total Company capital expenditures are planned to be $700 for fiscal 2023, though Spire had purchase commitments for only a small portion of these as of September 30, 2022.

As detailed in Note 6, Long-Term Debt, of the Notes to Financial Statements in Item 8, $281.2 of the total $3,258.9 principal amount is due in fiscal 2023. Using each long-term debt instrument’s stated maturity and fixed rates or variable rates as of September 30, 2022, interest payments are projected to total $1,560.2, of which $116.2 is due in fiscal 2023.

Spire’s natural gas purchase obligations totaled $2,107.1, including $946.8 for fiscal 2023, representing the minimum payments required under existing natural gas transportation and storage contracts and natural gas supply agreements. The amounts reflect fixed obligations as well as obligations to purchase natural gas at future market prices, calculated using forward market prices as of September 30, 2022. Each of the Utilities generally recovers costs related to its purchases, transportation and storage of natural gas through the operation of its PGA clause or GSA rider, subject to prudence review by the appropriate regional public service commission. Additional contractual commitments are generally entered into prior to or during the heating season.

Spire dividends declared and payable as of September 30, 2022, totaled $41.2, while annualized dividends based on the regular quarterly amounts declared on November 10, 2022, are estimated at $165.9.

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.

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The Company’s, Spire Missouri’s and Spire Alabama’s access to capital markets, including the commercial paper market, and their respective financing costs, may depend on the credit rating of the entity that is accessing the capital markets. Their debt is rated by two rating agencies: Standard & Poor’s Corporation (“S&P”) and Moody’s Investors Service (“Moody’s”). As of September 30, 2022, 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 Missouri 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 September 30, 2022 or 2021.

Short-term Debt

The Company’s short-term cash requirements can be met through the sale of commercial paper or the use of a revolving credit facility. For information about these resources, see Note 7, Notes Payable and Credit Agreements, of the Notes to Financial Statements in Item 8 and “Interest Rate Risk” under “Market Risk” below.

Long-term Debt and Equity

At September 30, 2022, including the current portion but excluding unamortized discounts and debt issuance costs, Spire had long-term debt totaling $3,258.9, of which $1,648.0 was issued by Spire Missouri, $575.0 was issued by Spire Alabama, and $205.9 was issued by other subsidiaries. For more information about long-term debt, see Note 6 of the Notes to Financial Statements in Item 8 and “Interest Rate Risk” under “Market Risk” below.

On December 7, 2021, pursuant to its registration statement on Form S-3 filed with the SEC, Spire Missouri issued $300.0 of first mortgage bonds due December 2, 2024, secured equally with all its other first mortgage bonds. Interest is payable quarterly in arrears at a floating rate based on the compounded secured overnight financing rate plus 50 basis points, with a maximum rate of the lesser of 8% or the maximum rate then permitted by applicable law.

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. As of September 30, 2022, the entire amount remained available under this authorization. Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

After fiscal year end, 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.

Spire has a shelf registration statement on Form S-3 on file with the 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 158,535 and153,190 shares at September 30, 2022 and November 11, 2022, 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.

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On February 6, 2019, Spire entered into 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 pursuant to Spire’s universal shelf registration statement and a prospectus supplement. Under this program, a total of 626,249 shares with an aggregate offering price of $47.8 were issued in fiscal 2019 and 2020, and 354,000 shares with an aggregate offering price of $23.5 were issued in the second quarter of fiscal 2022. On April 28, 2022, Spire’s Board of Directors approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 before the May 2025 expiration of the new universal shelf registration statement on Form S-3 filed in May 2022, under which a total of 365,625 shares with an aggregate offering price of $27.7 were issued in the third quarter of fiscal 2022.

In February 2021, Spire issued 3.5 million equity units for an aggregate stated amount of $175.0, resulting in net proceeds of $169.3 after underwriting fees and other issuance costs. See Note 5, Shareholders’ Equity, of the Notes to Financial Statements in Item 8 for additional discussion of these equity units.

Including the current portion of long-term debt, the Company’s long-term consolidated capitalization consisted of 46% equity at September 30, 2022 and 47% equity at September 30, 2021. For more information about equity, see Note 5 of the Notes to Financial Statements in Item 8.

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 their 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 16 of the Notes to Financial Statements in Item 8.

REGULATORY MATTERS

In May and July 2021, the U.S. Department of Homeland Security’s Transportation Security Administration issued security directives that included several new cybersecurity requirements for critical pipeline owners and operators. Among these requirements is the implementation of specific mitigation measures to protect against ransomware attacks and other known threats to information and operational technology systems; development and implementation of a cybersecurity contingency and recovery plan; and performance of a cybersecurity architecture design review. We are currently implementing several of these directives and evaluating the potential effect of several others on our operations and facilities, as well as the potential cost of implementation, and will continue to monitor for any clarifications or amendments to these directives. We are also engaged in a continuous program of testing and updating our cybersecurity measures.

For discussions of other regulatory matters for Spire, Spire Missouri, and Spire Alabama, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

ACCOUNTING PRONOUNCEMENTS

The Company, Spire Missouri and Spire Alabama have evaluated recently issued accounting standards and concluded that none will have a material impact on their financial position or results of operations upon adoption.

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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. We believe the following represent the more significant items requiring the use of judgment and estimates in preparing our financial statements:

Regulatory Accounting – The Utilities account for their regulated operations in accordance with FASB Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-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-rate-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. Also, 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. For Spire Missouri and Spire Alabama, management believes the following represent the more significant items recorded through the application of this accounting guidance:

PGA Clause – Spire Missouri’s PGA clauses allows it to flow through to customers, subject to a prudence review by the MoPSC, the cost of purchased gas supplies, including the costs, cost reductions and related carrying costs associated with the use of natural gas derivative instruments to hedge the purchase price of natural gas. The difference between actual costs incurred and costs recovered through the application of the PGA clauses are recorded as regulatory assets and regulatory liabilities that are recovered or refunded in a subsequent period. The PGA clauses also permit the application of carrying costs to all over- or under-recoveries of gas costs, including costs and cost reductions associated with the use of derivative instruments, and also provide for a portion of income from off-system sales and capacity release revenues to be flowed through to customers.

GSA Rider – Spire Alabama’s rate schedules for natural gas distribution charges contain a GSA rider, established in 1993, which permits the pass-through to customers of changes in the cost of gas supply. Spire Alabama’s tariff provides a temperature adjustment mechanism, also included in the GSA, that is designed to moderate the impact of departures from normal temperatures on Spire Alabama’s earnings. The temperature adjustment applies primarily to residential, small commercial and small industrial customers. Other non-temperature weather related conditions that may affect customer usage are not included in the temperature adjustment. In prior years, Spire Alabama entered into cash flow derivative commodity instruments to hedge its exposure to price fluctuations on its gas supply. Spire Alabama recognizes all derivatives at fair value as either assets or liabilities on the balance sheet. Any realized gains or losses are passed through to customers using the mechanisms of the GSA rider in accordance with Spire Alabama’s APSC approved tariff and are recognized as a regulatory asset or regulatory liability. All derivative commodity instruments in a gain position are valued on a discounted basis incorporating an estimate of performance risk specific to each related counterparty. Derivative commodity instruments in a loss position are valued on a discounted basis incorporating an estimate of performance risk specific to Spire Alabama. Spire Alabama currently has no active gas supply derivative positions.

ISRS – The ISRS allows Spire Missouri expedited recovery for its investment to upgrade its infrastructure and enhance its safety and reliability without the necessity of a formal rate case. Spire Missouri records ISRS revenues as authorized by the MoPSC and estimates the probability and amount of any refunds based on commission precedent, current legal rulings, the opinion of legal counsel, and other considerations.

Non-operational Overhead Costs – As a result of certain MoPSC orders, Spire Missouri ceased capitalization of non-operational overhead costs but deferred such costs into a regulatory asset for future review by the MoPSC. Management believes it is probable that Spire Missouri will ultimately be allowed to recover these deferred costs.

For more information, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

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Employee Benefits and Postretirement Obligations – Pension and postretirement obligations are calculated by actuarial consultants that utilize several statistical factors and other assumptions provided by management related to future events, such as discount rates, returns on plan assets, compensation increases, and mortality rates. For the Utilities, the amount of expense recognized and the amounts reflected in other comprehensive income are dependent upon the regulatory treatment provided for such costs, as discussed further below. Certain liabilities related to group medical benefits and workers’ compensation claims, portions of which are self-insured and/or contain “stop-loss” coverage with third-party insurers to limit exposure, are established based on historical trends.

The amount of net periodic pension and other postretirement benefit costs recognized in the financial statements related to the Utilities’ qualified pension plans and other postretirement benefit plans is based upon allowances, as approved by the MoPSC (for Spire Missouri) and as approved by the APSC (for Spire Alabama). The allowances have been established in the rate-making process for the recovery of these costs from customers. The differences between these amounts and actual pension and other postretirement benefit costs incurred for financial reporting purposes are deferred as regulatory assets or regulatory liabilities. GAAP also requires that changes that affect the funded status of pension and other postretirement benefit plans, but that are not yet required to be recognized as components of pension and other postretirement benefit costs, be reflected in other comprehensive income. For the Utilities’ qualified pension plans and other postretirement benefit plans, amounts that would otherwise be reflected in other comprehensive income are deferred with entries to regulatory assets or regulatory liabilities.

For more information, see Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8.

The tables below reflect the sensitivity of Spire’s plans to potential changes in key assumptions:

Pension Plan Benefits:				Estimated Increase/
				(Decrease) to			Estimated Increase/
	Increase/			Projected			(Decrease) to Annual
Actuarial Assumptions	(Decrease)			Benefit Obligation			Net Pension Cost*
Discount Rate		0.25	%	$	(10.6	)	$	0.4
		(0.25	)%		11.1			(0.4	)
Expected Return on Plan Assets		0.25	%		—			(1.2	)
		(0.25	)%		—			1.2
Rate of Future Compensation Increase		0.25	%		0.7			0.2
		(0.25	)%		(0.7	)		(0.2	)

Postretirement Benefits:				Estimated Increase/
				(Decrease) to			Estimated Increase/
				Projected			(Decrease) to Annual
	Increase/			Postretirement			Net Postretirement
Actuarial Assumptions	(Decrease)			Benefit Obligation			Benefit Cost*
Discount Rate		0.25	%	$	(2.8	)	$	0.1
		(0.25	)%		2.9			(0.1	)
Expected Return on Plan Assets		0.25	%		—			(0.7	)
		(0.25	)%		—			0.7

* Excludes the impact of regulatory deferral mechanism. See Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8 for information regarding the regulatory treatment of these costs.

Impairment of Long-lived Assets – Long-lived assets classified as held and used are evaluated for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Whether impairment has occurred is determined by comparing the estimated undiscounted cash flows attributable to the assets with the carrying value of the assets. If the carrying value exceeds the undiscounted cash flows, the Company recognizes an impairment charge equal to the amount of the carrying value that exceeds the estimated fair value of the assets. In the period in which the Company determines an asset meets held-for-sale criteria, an impairment charge is recorded to the extent the book value exceeds its fair value less cost to sell.

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On July 1, 2020, Spire’s Board of Directors, based upon the recommendation of senior management, revised the development plan for Spire Storage, resulting in an impairment charge of $140.8 related to Spire Storage assets in the quarter ended June 30, 2020. The revision was driven by the realization that a longer time horizon will be required for optimization and positioning of the storage facility to serve energy markets in the western United States. Among other factors, evaluations of the continuing evolution of market dynamics in the region led management to update models of various development alternatives. Separately in the quarter ended June 30, 2020, Spire recorded impairment charges totaling $7.8 related to two commercial compressed natural gas fueling stations as a result of revised projections reflecting lower diesel prices and slower conversions of Class 8 vehicles. The fair values used in measuring the impairment charges were determined with an expected present value technique using a discounted cash flow method under an income approach. Our impairment loss calculations required management to make assumptions and to apply judgment in order to estimate fair values of the assets. This involved estimating cash flows, useful lives, and current market value for similar assets and selecting a discount rate that reflects the risk inherent in future cash flows. Cash flow projections were based on assumptions about future market demand and achievement of certain operational capabilities. Assumptions were selected from a range of reasonably possible amounts and were supported by relevant and reliable data. However, if actual results are not consistent with our estimates and assumptions, we may be exposed to additional impairments that could be material. We do not believe there is a reasonable likelihood that there will be a material change in the estimates or assumptions we use to calculate asset impairment losses.

As discussed in Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8, the Spire STL Pipeline is operating under temporary certificates while the FERC considers approval of a new permanent certificate. While uncertainty exists, management has evaluated the facts in accordance with ASC 360 and concluded that the related assets have not become impaired.

Income Taxes – Income tax calculations require estimates due to book-tax differences, estimates with respect to regulatory treatment of certain items, and uncertainty in the interpretation of tax laws and regulations. Critical assumptions and judgments also include projections of future taxable income to determine the ability to utilize net operating losses and credit carryforwards prior to their expiration. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Management regularly assesses financial statement tax provisions to identify any change in regulatory treatment or tax related estimates and assumptions that could have a material impact on cash flows, financial position and/or results of operations. For more information, see Note 12, Income Taxes, of the Notes to Financial Statements in Item 8.

For further discussion of significant accounting policies, see Note 1, Summary of Significant Accounting Policies, of the Notes to Financial Statements in Item 8.

MARKET RISK

Commodity Price Risk

Gas Utility

The Utilities’ commodity price risk, which arises from market fluctuations in the price of natural gas, is primarily managed through the operation of Spire Missouri’s PGA clauses and Spire Alabama’s GSA rider. The PGA clauses and GSA rider allows the Utilities to flow through to customers, subject to prudence review by the MoPSC and APSC, the cost of purchased gas supplies. Spire Missouri is allowed the flexibility to make up to three discretionary PGA changes during each year, in addition to its mandatory November PGA change, so long as such changes are separated by at least two months. Spire Missouri is able to mitigate, to some extent, changes in commodity prices through the use of physical storage supplies and regional supply diversity. Spire Alabama is allowed to make monthly changes to the GSA rate, but increases cannot exceed a 5% increase over the prior effective residential billing rate. The Utilities also have risk management policies that allow for the purchase of natural gas derivative instruments with the goal of managing its price risk associated with purchasing natural gas on behalf of its customers. These policies prohibit speculation. As of September 30, 2022, Spire Missouri had active natural gas derivative positions, but Spire Alabama did not. Costs and cost reduction, including carrying costs, associated with the use of natural gas derivative instruments are allowed to be passed on to customers through the operation of the PGA clauses or GSA rider. Accordingly, the Utilities do not expect any adverse earnings impact as a result of the use of these derivative instruments. However, the timing of recovery for cash payments related to margin requirements may cause short-term cash requirements to vary. For more information about the Utilities’ natural gas derivative instruments, see Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8.

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Gas Marketing

In the course of its business, Spire’s non-regulated gas marketing subsidiary, Spire Marketing, enters into contracts to purchase and sell natural gas at fixed prices and natural gas index-based prices. Commodity price risk associated with these contracts has the potential to impact earnings and cash flows. To minimize this risk, Spire Marketing has a risk management policy that provides for daily monitoring of a number of business measures, including fixed price commitments. In accordance with the risk management policy, Spire Marketing manages the price risk associated with its fixed price commitments. This risk is currently managed either by closely matching the offsetting physical purchase or sale of natural gas at fixed-prices or through the use of natural gas futures, options and swap contracts traded on or cleared through the New York Mercantile Exchange (NYMEX) and Intercontinental Exchange (ICE) to lock in margins. At September 30, 2022 and 2021, Spire Marketing’s unmatched fixed-price positions were not material to Spire’s financial position or results of operations.

As mentioned above, Spire Marketing uses natural gas futures, options and swap contracts traded on or cleared through the NYMEX and ICE to manage the commodity price risk associated with its fixed-price natural gas purchase and sale commitments. These derivative instruments may be designated as cash flow hedges of forecasted purchases or sales. Such accounting treatment, if elected, generally permits a substantial portion of the gain or loss to be deferred from recognition in earnings until the period that the associated forecasted purchase or sale is recognized in earnings. To the extent a hedge is effective, gains or losses on the derivatives will be offset by changes in the value of the hedged forecasted transactions. At September 30, 2022 and 2021, Spire Marketing had no designated cash flow hedges. Information about the fair values of Spire Marketing’s exchange-traded/cleared natural gas derivative instruments is presented below:

	Derivative						Derivatives
	Fair			Cash			and Cash
	Values			Margin			Margin
Net balance of derivative assets at September 30, 2021	$	52.1		$	(39.3	)	$	12.8
Changes in fair value		43.3			—			43.3
Settlements/purchases - net		(84.8	)		—			(84.8	)
Changes in cash margin		—			54.5			54.5
Net balance of derivative assets at September 30, 2022	$	10.6		$	15.2		$	25.8

	As of September 30, 2022
Maturity by Fiscal Year	Total			2023			2024			2025			2026
Fair values of exchange-traded/cleared natural gas derivatives - net	$	14.7		$	12.5		$	2.5		$	(0.3	)	$	—
Fair values of basis swaps - net		(3.2	)		(2.9	)		(0.2	)		(0.1	)		—
Fair values of puts and calls - net		(1.9	)		(1.9	)		—			—			—
Position volumes:
MMBtu - net (short) long futures/swap/option positions		84.1			50.3			19.5			13.0			1.3
MMBtu - net (short) long basis swap positions		(16.0	)		(13.6	)		(1.8	)		(0.6	)		—
MMBtu - net (short) puts and calls positions		(1.4	)		(1.4	)		—			—			—

Certain of Spire Marketing’s physical natural gas derivative contracts are designated as normal purchases or normal sales, as permitted by GAAP. This election permits the Company to account for the contract in the period the natural gas is delivered. Contracts not designated as normal purchases or normal sales, including those designated as trading activities, are accounted for as derivatives with changes in fair value recognized in earnings in the periods prior to settlement.

Below is a reconciliation of the beginning and ending balances for physical natural gas contracts accounted for as derivatives, none of which will settle beyond fiscal 2023:

Net balance of derivative liabilities at September 30, 2021	$	(61.5	)
Changes in fair value		101.0
Settlements		(48.4	)
Net balance of derivative liabilities at September 30, 2022	$	(8.9	)

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For further details related to Spire Marketing’s derivatives and hedging activities, see Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8.

Counterparty Credit Risk

Spire Marketing has concentrations of counterparty credit risk in that a significant portion of its transactions are with energy producers, utility companies and pipelines. These concentrations of counterparties have the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that each of these three groups may be affected similarly by changes in economic, industry or other conditions. Spire Marketing also has concentrations of credit risk with certain individually significant counterparties. To the extent possible, Spire Marketing enters into netting arrangements with its counterparties to mitigate exposure to credit risk. It is also exposed to credit risk associated with its derivative contracts designated as normal purchases and normal sales. Spire Marketing closely monitors its credit exposure and, although uncollectible amounts have not been significant, increased counterparty defaults are possible and may result in financial losses and/or capital limitations. For more information on these and other concentrations of credit risk, including how Spire Marketing manages these risks, see Note 11, Concentrations of Credit Risk, of the Notes to Financial Statements in Item 8.

Interest Rate Risk

The Company is subject to interest rate risk associated with its short-term debt issuances. Based on average short-term borrowings during fiscal 2022, an increase of 100 basis points in the underlying average interest rate for short-term debt would have caused an increase in interest expense (and a decrease in pre-tax earnings and cash flows) of approximately $7.5 on an annual basis. Portions of such an increase may be offset through the Utilities’ application of PGA and GSA carrying costs. At September 30, 2022, Spire had fixed-rate long-term debt totaling $2,958.9, of which $1,348.0 was issued by Spire Missouri, $575.0 was issued by Spire Alabama, and $1,035.9 was issued by Spire and other subsidiaries. While the long-term debt issues are fixed-rate, they are subject to changes in fair value as market interest rates change. However, increases or decreases in fair value would impact earnings and cash flows only if the Company were to reacquire any of these issues in the open market prior to maturity. Under GAAP applicable to the Utilities’ regulated operations, losses or gains on early redemptions of long-term debt would typically be deferred as regulatory assets or regulatory liabilities and amortized over a future period.

Refer to Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8 for additional details on the Company’s interest rate swap transactions.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

For this discussion, see “Market Risk” in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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Item 8. Financial Statements and Supplementary Data

	Page
Management Reports on Internal Control over Financial Reporting	48
Reports of Independent Registered Public Accounting Firm (PCAOB ID 34)	49
Financial Statements (for years ended September 30, 2022, 2021, and 2020):
Spire Inc.
Consolidated Statements of Income	56
Consolidated Statements of Comprehensive Income	57
Consolidated Balance Sheets	58
Consolidated Statements of Shareholders’ Equity	60
Consolidated Statements of Cash Flows	61
Spire Missouri Inc.
Statements of Comprehensive Income	62
Balance Sheets	63
Statements of Shareholder’s Equity	65
Statements of Cash Flows	66
Spire Alabama Inc.
Statements of Income	67
Balance Sheets	68
Statements of Shareholder’s Equity	70
Statements of Cash Flows	71
Notes to Financial Statements
Note 1. Summary of Significant Accounting Policies	72
Note 2. Revenue	78
Note 3. Stock-Based Compensation	80
Note 4. Earnings Per Common Share	83
Note 5. Shareholders’ Equity	83
Note 6. Long-Term Debt	87
Note 7. Notes Payable and Credit Agreements	89
Note 8. Fair Value of Financial Instruments	90
Note 9. Fair Value Measurements	91
Note 10. Derivative Instruments and Hedging Activities	93
Note 11. Concentrations of Credit Risk	99
Note 12. Income Taxes	100
Note 13. Pension Plans and Other Postretirement Benefits	100
Note 14. Information by Operating Segment	113
Note 15. Regulatory Matters	115
Note 16. Commitments and Contingencies	122
Note 17. Leases	125

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Management Reports on Internal Control over Financial Reporting

Spire Inc.

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Inc.’s internal control over financial reporting as of September 30, 2022. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Inc.’s internal control over financial reporting was effective as of September 30, 2022. Deloitte & Touche LLP, an independent registered public accounting firm, has issued an attestation report on Spire Inc.’s internal control over financial reporting, which is included herein.

Spire Missouri Inc.

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Missouri Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Missouri Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Missouri Inc.’s internal control over financial reporting as of September 30, 2022. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Missouri Inc.’s internal control over financial reporting was effective as of September 30, 2022.

Spire Alabama Inc.

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Alabama Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Alabama Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Alabama Inc.’s internal control over financial reporting as of September 30, 2022. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Alabama Inc.’s internal control over financial reporting was effective as of September 30, 2022.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Spire Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Spire Inc. and subsidiaries (the “Company”) as of September 30, 2022, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of September 30, 2022, based on criteria established in Internal Control—Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended September 30, 2022, of the Company and our report dated November 16, 2022, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for their assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management Reports on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed 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. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Spire Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Spire Inc. and subsidiaries (the “Company”) as of September 30, 2022 and 2021, the related consolidated statements of income, comprehensive income, shareholders’ equity, and cash flows, for each of the three years in the period ended September 30, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2022 and 2021, and the results of their operations and their cash flows for each of the three years in the period ended September 30, 2022, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company’s internal control over financial reporting as of September 30, 2022, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated November 16, 2022, expressed an unqualified opinion on the Company’s internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-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-rate-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. Also, 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).

50

The Company is subject to rate regulation by the Missouri, Alabama, and Mississippi Public Service Commissions (the “Commissions”), which have jurisdiction with respect to the rates of natural gas companies within their respective geographies. The Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commissions will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2022, and the judgments made by management to support its assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commissions included the following, among others:

• We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment and deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.

• We read relevant regulatory orders issued by the Commissions for the Company in Missouri, Alabama, and Mississippi; regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances.

• We obtained from management the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and assessed management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

We have served as the Company’s auditor since 1953.

51

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of Spire Missouri Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Spire Missouri Inc. (a wholly owned subsidiary of Spire Inc.) (the “Company”)as of September 30, 2022 and 2021, the related statements of comprehensive income, shareholder’s equity, and cash flows, for each of the three years in the period ended September 30, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2022 and 2021, and the results of their operations and their cash flows for each of the three years in the period ended September 30, 2022, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of their internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-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-rate-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. Also, 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).

52

The Company is subject to rate regulation by the Missouri Public Service Commission (the “Commission”), which has jurisdiction with respect to the rates of natural gas companies within Missouri's geography. The Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commission will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2022, and the judgments made by management to support their assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commission included the following, among others:

• We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment and deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.

• We read relevant regulatory orders issued by the Commission for the Company in Missouri; regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commission’s treatment of similar costs under similar circumstances.

• We obtained from management the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and assessed management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

We have served as the Company’s auditor since 1953.

53

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of Spire Alabama Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Spire Alabama Inc. (a wholly owned subsidiary of Spire Inc.) (the “Company”) as of September 30, 2022 and 2021, the related statements of income, shareholder’s equity, and cash flows, for each of the three years in the period ended September 30, 2022, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2022 and 2021, and the results of their operations and their cash flows for each of the three years in the period ended September 30, 2022, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of their internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-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-rate-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. Also, 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).

54

The Company is subject to rate regulation by the Alabama Public Service Commission (the “Commission”), which has jurisdiction with respect to the rates of natural gas companies within Alabama's geography. The Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commission will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2022, and the judgments made by management to support their assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the Commission included the following, among others:

• We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment and deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.

• We read relevant regulatory orders issued by the Commission for the Company in Alabama; regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commission’s treatment of similar costs under similar circumstances.

• We obtained from management the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and assessed management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

We have served as the Company’s auditor since 2014.

55

SPIRE INC.

CONSOLIDATED STATEMENTS OF INCOME

	Years Ended September 30
(In millions, except per share amounts)	2022			2021			2020
Operating Revenues	$	2,198.5		$	2,235.5		$	1,855.4
Operating Expenses:
Natural gas		923.9			946.3			696.1
Operation and maintenance		449.6			465.8			458.6
Depreciation and amortization		237.3			213.1			197.3
Taxes, other than income taxes		179.5			160.1			148.4
Impairments		—			—			148.6
Total Operating Expenses		1,790.3			1,785.3			1,649.0
Operating Income		408.2			450.2			206.4
Interest Expense, Net		119.8			106.6			105.5
Other (Expense) Income, Net		(8.7	)		(3.4	)		0.1
Income Before Income Taxes		279.7			340.2			101.0
Income Tax Expense		58.9			68.5			12.4
Net Income		220.8			271.7			88.6
Provision for preferred dividends		14.8			14.8			14.8
Income allocated to participating securities		0.3			0.4			0.1
Net Income Available to Common Shareholders	$	205.7		$	256.5		$	73.7
Weighted Average Number of Common Shares Outstanding:
Basic		52.0			51.6			51.2
Diluted		52.1			51.7			51.3
Basic Earnings Per Share of Common Stock	$	3.96		$	4.97		$	1.44
Diluted Earnings Per Share of Common Stock	$	3.95		$	4.96		$	1.44

See the accompanying Notes to Financial Statements.

56

SPIRE INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

	Years Ended September 30
(In millions)	2022			2021			2020
Net Income	$	220.8		$	271.7		$	88.6
Other Comprehensive Income (Loss), Before Tax:
Cash flow hedging derivative instruments:
Net hedging gain (loss) arising during the period		56.7			61.2			(8.9	)
Amounts reclassified into net income		(1.2	)		(1.3	)		(3.2	)
Net gain (loss) on cash flow hedging derivative instruments		55.5			59.9			(12.1	)
Net gain (loss) on defined benefit pension and other postretirement plans		1.5			(1.3	)		(0.5	)
Net unrealized loss on available-for-sale debt securities		(0.4	)		(0.2	)		—
Other Comprehensive Income (Loss), Before Tax		56.6			58.4			(12.6	)
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss)		13.0			13.6			(2.7	)
Other Comprehensive Income (Loss), Net of Tax		43.6			44.8			(9.9	)
Comprehensive Income	$	264.4		$	316.5		$	78.7

See the accompanying Notes to Financial Statements.

57

SPIRE INC.

CONSOLIDATED BALANCE SHEETS

	September 30
(In millions)	2022			2021
ASSETS
Utility Plant	$	7,664.9		$	7,225.0
Less: Accumulated depreciation and amortization		2,294.5			2,169.3
Net Utility Plant		5,370.4			5,055.7
Non-utility Property (net of accumulated depreciation and amortization of $50.7 and $32.1 at September 30, 2022 and 2021, respectively)		491.4			471.1
Other Investments		87.8			83.1
Total Other Property and Investments		579.2			554.2
Current Assets:
Cash and cash equivalents		6.5			4.3
Accounts receivable:
Utility		210.8			338.4
Other		443.8			288.2
Allowance for credit losses		(31.9	)		(30.3	)
Delayed customer billings		21.3			9.2
Inventories:
Natural gas		371.8			267.7
Propane gas		8.6			8.7
Materials and supplies		41.9			28.6
Regulatory assets		355.4			306.5
Prepayments		41.1			29.0
Other		122.7			66.2
Total Current Assets		1,592.0			1,316.5
Deferred Charges and Other Assets:
Goodwill		1,171.6			1,171.6
Regulatory assets		1,112.4			993.5
Other		258.1			264.9
Total Deferred Charges and Other Assets		2,542.1			2,430.0
Total Assets	$	10,083.7		$	9,356.4

58

SPIRE INC.

CONSOLIDATED BALANCE SHEETS (Continued)

	September 30
	2022		2021
CAPITALIZATION AND LIABILITIES
Capitalization:
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at September 30, 2022 and 2021)	$	242.0	$	242.0
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.5 million issued and outstanding at September 30, 2022, and 51.7 million shares issued and outstanding at September 30, 2021)		52.5		51.7
Paid-in capital		1,571.3		1,517.9
Retained earnings		905.5		843.0
Accumulated other comprehensive income		47.2		3.6
Total Shareholders' Equity		2,818.5		2,658.2
Temporary equity		13.1		9.8
Long-term debt (less current portion)		2,958.5		2,939.1
Total Capitalization		5,790.1		5,607.1
Current Liabilities:
Current portion of long-term debt		281.2		55.8
Notes payable		1,037.5		672.0
Accounts payable		617.4		409.9
Advance customer billings		18.7		32.1
Wages and compensation accrued		50.2		59.5
Customer deposits		28.2		28.9
Taxes accrued		90.1		78.8
Regulatory liabilities		3.7		34.6
Other		226.6		236.7
Total Current Liabilities		2,353.6		1,608.3
Deferred Credits and Other Liabilities:
Deferred income taxes		675.1		612.3
Pension and postretirement benefit costs		163.0		235.9
Asset retirement obligations		520.9		519.6
Regulatory liabilities		418.2		620.9
Other		162.8		152.3
Total Deferred Credits and Other Liabilities		1,940.0		2,141.0
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities	$	10,083.7	$	9,356.4

See the accompanying Notes to Financial Statements.

59

SPIRE INC.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Dollars in millions,	Common Stock					Preferred		Paid-in			Retained
except per share amounts)	Shares			Par		Stock		Capital			Earnings			AOCI*			Total
Balance at September 30, 2019		50,973,515		$	51.0	$	242.0	$	1,505.8		$	775.5		$	(31.3	)	$	2,543.0
Net income		—			—		—		—			88.6			—			88.6
Common stock issued		446,619			0.4		—		31.6			—			—			32.0
Dividend reinvestment plan		122,545			0.1		—		9.1			—			—			9.2
Stock-based compensation costs		—			—		—		6.0			—			—			6.0
Stock issued under stock-based compensation plans		110,463			0.1		—		(0.1	)		—			—			—
Employees’ tax withholding for stock-based compensation		(41,353	)		—		—		(3.2	)		—			—			(3.2	)
Temporary equity adjustment to redemption value		—			—		—		—			3.4			—			3.4
Dividends declared:
Common stock ($2.49 per share)		—			—		—		—			(128.4	)		—			(128.4	)
Preferred stock ($1.84375 per depositary share)		—			—		—		—			(18.4	)		—			(18.4	)
Other comprehensive loss, net of tax		—			—		—		—			—			(9.9	)		(9.9	)
Balance at September 30, 2020		51,611,789		$	51.6	$	242.0	$	1,549.2		$	720.7		$	(41.2	)	$	2,522.3
Net income		—			—		—		—			271.7			—			271.7
Dividend reinvestment plan		24,565			—		—		1.6			—			—			1.6
Stock-based compensation costs		—			—		—		9.1			—			—			9.1
Stock issued under stock-based compensation plans		65,316			0.1		—		(0.1	)		—			—			—
Employees’ tax withholding for stock-based compensation		(16,787	)		—		—		(1.1	)		—			—			(1.1	)
Equity units issued		—			—		—		(40.8	)		—			—			(40.8	)
Temporary equity adjustment to redemption value		—			—		—		—			1.3			—			1.3
Dividends declared:
Common stock ($2.60 per share)		—			—		—		—			(135.9	)		—			(135.9	)
Preferred stock ($1.475 per depositary share)		—			—		—		—			(14.8	)		—			(14.8	)
Other comprehensive income, net of tax		—			—		—		—			—			44.8			44.8
Balance at September 30, 2021		51,684,883		$	51.7	$	242.0	$	1,517.9		$	843.0		$	3.6		$	2,658.2
Net income		—			—		—		—			220.8			—			220.8
Common stock issued		719,625			0.7		—		49.6			—			—			50.3
Dividend reinvestment plan		24,154			—		—		1.6			—			—			1.6
Stock-based compensation costs		—			—		—		4.1			—			—			4.1
Stock issued under stock-based compensation plans		93,936			0.1		—		(0.1	)		—			—			—
Employees’ tax withholding for stock-based compensation		(28,055	)		—		—		(1.8	)		—			—			(1.8	)
Dividends declared:
Common stock ($2.74 per share)		—			—		—		—			(143.5	)		—			(143.5	)
Preferred stock ($1.475 per depositary share)		—			—		—		—			(14.8	)		—			(14.8	)
Other comprehensive income, net of tax		—			—		—		—			—			43.6			43.6
Balance at September 30, 2022		52,494,543		$	52.5	$	242.0	$	1,571.3		$	905.5		$	47.2		$	2,818.5

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

60

SPIRE INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

	Years Ended September 30
(In millions)	2022			2021			2020
Operating Activities:
Net Income	$	220.8		$	271.7		$	88.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		237.3			213.1			197.3
Impairments		—			—			148.6
Deferred income taxes and investment tax credits		57.9			67.0			9.0
Changes in assets and liabilities:
Accounts receivable		(26.5	)		(343.0	)		36.2
Inventories		(117.2	)		(111.0	)		2.6
Regulatory assets and liabilities		(409.0	)		76.6			0.6
Accounts payable		190.7			177.7			(43.1	)
Delayed/advance customer billings, net		(25.5	)		(12.4	)		7.0
Taxes accrued		11.2			8.9			2.9
Other assets and liabilities		(93.5	)		(116.1	)		12.0
Other		8.8			17.3			8.2
Net cash provided by operating activities		55.0			249.8			469.9
Investing Activities:
Capital expenditures		(552.2	)		(624.8	)		(638.4	)
Other		5.5			2.8			6.8
Net cash used in investing activities		(546.7	)		(622.0	)		(631.6	)
Financing Activities:
Issuance of long-term debt		300.0			629.1			510.0
Repayment of long-term debt		(55.8	)		(115.4	)		(147.0	)
Issuance (repayment) of short-term debt, net		365.5			24.0			(95.2	)
Issuance of common stock		51.9			1.0			41.1
Dividends paid on common stock		(141.9	)		(133.2	)		(128.0	)
Dividends paid on preferred stock		(14.8	)		(14.8	)		(14.8	)
Other		(4.0	)		(11.3	)		(6.1	)
Net cash provided by financing activities		500.9			379.4			160.0
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash		9.2			7.2			(1.7	)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year		11.3			4.1			5.8
Cash, Cash Equivalents, and Restricted Cash at End of Year	$	20.5		$	11.3		$	4.1
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(119.9	)	$	(98.7	)	$	(100.0	)
Income taxes		(1.8	)		(1.5	)		(2.9	)

See the accompanying Notes to Financial Statements.

61

SPIRE MISSOURI INC.

STATEMENTS OF COMPREHENSIVE INCOME

	Years Ended September 30
(In millions)	2022			2021			2020
Operating Revenues	$	1,321.0		$	1,516.6		$	1,193.6
Operating Expenses:
Natural gas		587.0			786.8			515.8
Operation and maintenance		255.7			261.1			251.0
Depreciation and amortization		145.3			129.2			118.0
Taxes, other than income taxes		129.0			110.9			103.2
Total Operating Expenses		1,117.0			1,288.0			988.0
Operating Income		204.0			228.6			205.6
Interest Expense, Net		60.9			50.3			49.4
Other Expense, Net		(6.9	)		(8.9	)		(8.7	)
Income Before Income Taxes		136.2			169.4			147.5
Income Tax Expense		21.3			25.3			17.3
Net Income		114.9			144.1			130.2
Other Comprehensive Income (Loss), Net of Tax		1.5			(1.3	)		(0.5	)
Comprehensive Income	$	116.4		$	142.8		$	129.7

See the accompanying Notes to Financial Statements.

62

SPIRE MISSOURI INC.

BALANCE SHEETS

	September 30
(In millions)	2022			2021
ASSETS
Utility Plant	$	4,550.4		$	4,266.6
Less: Accumulated depreciation and amortization		982.1			905.1
Net Utility Plant		3,568.3			3,361.5
Other Property and Investments		58.9			60.2
Current Assets:
Accounts receivable:
Utility		131.5			279.0
Associated companies		3.7			4.7
Other		44.5			57.5
Allowance for credit losses		(24.9	)		(22.6	)
Delayed customer billings		16.1			2.4
Inventories:
Natural gas		215.3			176.7
Propane gas		8.6			8.7
Materials and supplies		22.0			15.0
Regulatory assets		288.1			276.3
Prepayments	23.3			19.7
Other		—			0.1
Total Current Assets		728.2			817.5
Deferred Charges and Other Assets:
Goodwill		210.2			210.2
Regulatory assets		547.6			483.1
Other		105.0			125.6
Total Deferred Charges and Other Assets		862.8			818.9
Total Assets	$	5,218.2		$	5,058.1

63

SPIRE MISSOURI INC.

BALANCE SHEETS (continued)

	September 30
	2022			2021
CAPITALIZATION AND LIABILITIES
Capitalization:
Common stock (par value $1.00 per share; 50.0 million shares authorized; 25,325 issued and outstanding at September 30, 2022 and 24,577 issued and outstanding at 2021)	$	0.1		$	0.1
Paid-in capital		816.1			765.0
Retained earnings		931.9			817.0
Accumulated other comprehensive loss		(2.7	)		(4.2	)
Total Shareholder's Equity		1,745.4			1,577.9
Long-term debt (less current portion)		1,387.7			1,338.4
Total Capitalization		3,133.1			2,916.3
Current Liabilities:
Current portion of long-term debt		250.0			—
Notes payable		—			250.0
Notes payable – associated companies		445.3			240.9
Accounts payable		119.0			89.7
Accounts payable – associated companies		13.3			10.2
Advance customer billings	7.0				19.7
Wages and compensation accrued		33.8			40.3
Customer deposits		6.5			8.0
Taxes accrued		50.4			41.2
Regulatory liabilities		—			17.1
Other		45.6			47.4
Total Current Liabilities		970.9			764.5
Deferred Credits and Other Liabilities:
Deferred income taxes		500.1			480.0
Pension and postretirement benefit costs		115.5			159.5
Asset retirement obligations		110.6			143.4
Regulatory liabilities		331.8			538.8
Other		56.2			55.6
Total Deferred Credits and Other Liabilities		1,114.2			1,377.3
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities	$	5,218.2		$	5,058.1

See the accompanying Notes to Financial Statements.

64

SPIRE MISSOURI INC.

STATEMENTS OF SHAREHOLDER’S EQUITY

	Common Stock				Paid-in		Retained
(Dollars in millions)	Shares		Par		Capital		Earnings			AOCI*			Total
Balance at September 30, 2019		24,577	$	0.1	$	765.0	$	576.6		$	(2.4	)	$	1,339.3
Net income		—		—		—		130.2			—			130.2
Dividends declared		—		—		—		(33.9	)		—			(33.9	)
Other comprehensive loss, net of tax		—		—		—		—			(0.5	)		(0.5	)
Balance at September 30, 2020		24,577		0.1		765.0		672.9			(2.9	)		1,435.1
Net income		—		—		—		144.1			—			144.1
Other comprehensive loss, net of tax		—		—		—		—			(1.3	)		(1.3	)
Balance at September 30, 2021		24,577		0.1		765.0		817.0			(4.2	)		1,577.9
Net income		—		—		—		114.9			—			114.9
Common stock issued to Spire Inc.		748		—		51.1		—			—			51.1
Other comprehensive income, net of tax		—		—		—		—			1.5			1.5
Balance at September 30, 2022		25,325	$	0.1	$	816.1	$	931.9		$	(2.7	)	$	1,745.4

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

65

SPIRE MISSOURI INC.

STATEMENTS OF CASH FLOWS

	Years Ended September 30
(In millions)	2022			2021			2020
Operating Activities:
Net Income	$	114.9		$	144.1		$	130.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		145.3			129.2			118.0
Deferred income taxes and investment tax credits		21.3			25.3			17.1
Changes in assets and liabilities:
Accounts receivable		163.8			(207.4	)		(3.7	)
Inventories		(45.4	)		(79.0	)		2.7
Regulatory assets and liabilities		(314.3	)		35.9			27.3
Accounts payable		25.3			23.1			2.3
Delayed/advance customer billings, net		(26.4	)		(13.0	)		13.7
Taxes accrued		9.3			2.1			2.7
Other assets and liabilities		(48.0	)		(115.0	)		(6.1	)
Other		1.4			0.7			0.6
Net cash provided by (used in) operating activities		47.2			(54.0	)		304.8
Investing Activities:
Capital expenditures		(354.1	)		(382.6	)		(356.0	)
Other		3.6			1.3			1.3
Net cash used in investing activities		(350.5	)		(381.3	)		(354.7	)
Financing Activities:
Issuance of long-term debt		300.0			304.1			275.0
Repayment of long-term debt		—			(55.0	)		(107.0	)
(Repayment) issuance of short-term debt, net		(250.0	)		250.0			—
Borrowings from (repayments to) Spire, net		204.4			(60.3	)		(85.2	)
Issuance of common stock		51.1			—			—
Dividends paid		—			—			(33.9	)
Other		(2.2	)		(3.5	)		(1.6	)
Net cash provided by financing activities		303.3			435.3			47.3
Net Decrease in Cash and Cash Equivalents		—			—			(2.6	)
Cash and Cash Equivalents at Beginning of Year		—			—			2.6
Cash and Cash Equivalents at End of Year	$	—		$	—		$	—
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(58.9	)	$	(45.9	)	$	(46.0	)
Income taxes		—			—			—

See the accompanying Notes to Financial Statements.

66

SPIRE ALABAMA INC.

STATEMENTS OF INCOME

	Years Ended September 30
(In millions)	2022		2021		2020
Operating Revenues	$	509.1	$	494.0	$	455.0
Operating Expenses:
Natural gas		161.5		145.3		118.9
Operation and maintenance		130.1		132.5		139.1
Depreciation and amortization		66.8		62.1		59.3
Taxes, other than income taxes		38.1		37.1		34.8
Total Operating Expenses		396.5		377.0		352.1
Operating Income		112.6		117.0		102.9
Interest Expense, Net	21.3		20.2			20.6
Other Income, Net		0.4		2.0		5.4
Income Before Income Taxes		91.7		98.8		87.7
Income Tax Expense		23.2		25.0		22.0
Net Income	$	68.5	$	73.8	$	65.7

See the accompanying Notes to Financial Statements.

67

SPIRE ALABAMA INC.

BALANCE SHEETS

	September 30
(In millions)	2022			2021
ASSETS
Utility Plant	$	2,732.6		$	2,586.5
Less: Accumulated depreciation and amortization		1,184.1			1,124.8
Net Utility Plant		1,548.5			1,461.7
Current Assets:
Cash and cash equivalents		2.4			—
Accounts receivable:
Utility		69.9			49.8
Associated companies		1.3			0.6
Other		6.5			6.4
Allowance for credit losses		(6.3	)		(6.6	)
Delayed customer billings		4.8			6.7
Inventories:
Natural gas		72.5			35.5
Materials and supplies		16.3			10.8
Regulatory assets		56.9			18.8
Prepayments		5.8			5.4
Total Current Assets		230.1			127.4
Deferred Charges and Other Assets:
Regulatory assets		538.2			483.3
Deferred income tax		11.0			34.2
Other		81.3			63.9
Total Deferred Charges and Other Assets		630.5			581.4
Total Assets	$	2,409.1		$	2,170.5

68

SPIRE ALABAMA INC.

BALANCE SHEETS (continued)

	September 30
	2022		2021
CAPITALIZATION AND LIABILITIES
Capitalization:
Common stock and paid-in capital (par value $0.01 per share; 3,000,000 shares authorized; 1,972,052 issued and outstanding at September 30, 2022 and 2021)	$	316.9	$	328.9
Retained earnings		589.1		552.6
Total Shareholder's Equity		906.0		881.5
Long-term debt (less current portion)		571.5		571.2
Total Capitalization		1,477.5		1,452.7
Current Liabilities:
Current portion of long-term debt		—		50.0
Notes payable – associated companies		260.9		49.0
Accounts payable		85.6		52.3
Accounts payable – associated companies		4.4		6.0
Advance customer billings		9.9		11.2
Wages and compensation accrued		7.6		9.3
Customer deposits		19.0		18.4
Taxes accrued		31.3		30.4
Regulatory liabilities		—		13.4
Other		22.4		17.3
Total Current Liabilities		441.1		257.3
Deferred Credits and Other Liabilities:
Pension and postretirement benefit costs		40.5		66.7
Asset retirement obligations		398.7		362.8
Regulatory liabilities		23.0		23.4
Other		28.3		7.6
Total Deferred Credits and Other Liabilities		490.5		460.5
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities	$	2,409.1	$	2,170.5

See the accompanying Notes to Financial Statements.

69

SPIRE ALABAMA INC.

STATEMENTS OF SHAREHOLDER’S EQUITY

	Common Stock				Paid-in			Retained
(Dollars in millions)	Shares		Par		Capital			Earnings			Total
Balance at September 30, 2019		1,972,052	$	—	$	370.9		$	459.1		$	830.0
Net income		—		—		—			65.7			65.7
Dividends declared		—		—		—			(24.0	)		(24.0	)
Return of capital to Spire		—		—		(20.0	)		—			(20.0	)
Balance at September 30, 2020		1,972,052		—		350.9			500.8			851.7
Net income		—		—		—			73.8			73.8
Dividends declared		—		—		—			(22.0	)		(22.0	)
Return of capital to Spire		—		—		(22.0	)		—			(22.0	)
Balance at September 30, 2021		1,972,052		—		328.9			552.6			881.5
Net income		—		—		—			68.5			68.5
Dividends declared		—		—		—			(32.0	)		(32.0	)
Return of capital to Spire		—		—		(12.0	)		—			(12.0	)
Balance at September 30, 2022		1,972,052	$	—	$	316.9		$	589.1		$	906.0

See the accompanying Notes to Financial Statements.

70

SPIRE ALABAMA INC.

STATEMENTS OF CASH FLOWS

	Years Ended September 30
(In millions)	2022			2021			2020
Operating Activities:
Net Income	$	68.5		$	73.8		$	65.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		66.8			62.1			59.3
Deferred income taxes		23.2			25.0			22.0
Changes in assets and liabilities:
Accounts receivable		(21.2	)		(17.8	)		7.3
Inventories		(42.5	)		(15.4	)		11.9
Regulatory assets and liabilities		(101.7	)		29.2			(23.5	)
Accounts payable		26.3			14.0			(15.1	)
Delayed/advance customer billings		0.5			0.5			(6.6	)
Taxes accrued		0.8			2.5			0.6
Other assets and liabilities		(3.7	)		(37.8	)		18.9
Other		0.2			0.3			0.2
Net cash provided by operating activities		17.2			136.4			140.7
Investing Activities:
Capital expenditures		(141.5	)		(169.8	)		(150.4	)
Other		0.8			0.7			1.6
Net cash used in investing activities		(140.7	)		(169.1	)		(148.8	)
Financing Activities:
Issuance of long-term debt		—			150.0			100.0
Repayment of long-term debt		(50.0	)		—			(40.0	)
Borrowings from (repayments to) Spire, net		211.9			(72.4	)		(7.4	)
Return of capital to Spire		(12.0	)		(22.0	)		(20.0	)
Dividends paid		(24.0	)		(22.0	)		(24.0	)
Other		—			(0.9	)		(0.5	)
Net cash provided by financing activities		125.9			32.7			8.1
Net Increase in Cash and Cash Equivalents		2.4			—			—
Cash and Cash Equivalents at Beginning of Year		—			—			—
Cash and Cash Equivalents at End of Year	$	2.4		$	—		$	—
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	$	(21.0	)	$	(17.9	)	$	(19.0	)
Income taxes		—			—			—

See the accompanying Notes to Financial Statements.

71

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

NOTES TO FINANCIAL STATEMENTS

(Dollars in millions, except per share, per unit and per gallon amounts)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION – These notes are an integral part of the accompanying audited 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.” Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

The accompanying audited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). 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.

NATURE OF OPERATIONS – Spire has two reportable segments: Gas Utility and Gas Marketing. 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 primary gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The activities of the Company’s other subsidiaries are reported as Other and are described in Note 14, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment.

USE OF ESTIMATES – The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

SYSTEM OF ACCOUNTS – The accounts of the Utilities are maintained in accordance with the Uniform System of Accounts prescribed by the applicable state public service commissions, which systems substantially conform to that prescribed by the Federal Energy Regulatory Commission (FERC).

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. See additional discussion on regulated operations in Note 15, Regulatory Matters.

72

 

PROPERTY, PLANT, AND EQUIPMENT –

Utility Plant – Utility plant is stated at original cost. The cost of additions to utility plant includes contracted work, direct labor and materials, allocable overheads and an allowance for funds used during construction. The costs of units of property retired, replaced or renewed are removed from utility plant and are charged to accumulated depreciation. Maintenance and repairs of property and replacement and renewal of items determined to be less than units of property are charged to maintenance expenses.

Utility plant is depreciated using the composite method on a straight-line basis over the estimated service lives of the various classes of property at rates approved by the applicable regulatory commission. For Spire Missouri and for Spire Alabama, the annual depreciation and amortization expense in fiscal years 2022, 2021 and 2020 averaged approximately 3% of the original cost of depreciable and amortizable property.

Non-utility Property – Non-utility property is recorded at the original cost of acquisition or construction, which includes material, labor, contractor services and, for FERC-regulated projects, an allowance for funds used during construction. Repairs, replacements and renewals of items of property determined to be less than a unit of property or that do not increase the property’s life or functionality are charged to maintenance expense. Upon retirement or sale of non-utility property, the original cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in the income statements. Costs related to software developed or obtained for internal use are capitalized and amortized on a straight-line basis over the estimated useful life of the related software. If software is retired prior to being fully amortized, the difference is recorded as a loss in the income statements.

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

September 30	2022		2021		2020
Spire	$	77.8	$	59.5	$	67.6
Spire Missouri		45.6		37.1		34.3
Spire Alabama		19.2		13.6		17.0

ASSET RETIREMENT OBLIGATIONS – Spire, Spire Missouri and Spire Alabama record legal obligations associated with the retirement of long-lived assets in the period in which the obligations are incurred, if sufficient information exists to reasonably estimate the fair value of the obligations. Obligations are recorded as both a cost of the related long-lived asset and as a corresponding liability. Subsequently, the asset retirement costs are depreciated over the life of the asset and the asset retirement obligations are accreted to the expected settlement amounts. The Company, Spire Missouri and Spire Alabama record asset retirement obligations associated with certain safety requirements to purge and seal gas distribution mains upon retirement, the plugging and abandonment of storage wells and other storage facilities, specific service line obligations, and certain removal and disposal obligations related to components of Spire Missouri’s, Spire Alabama’s and Spire Gulf’s distribution systems and general plant. Asset retirement obligations recorded by Spire’s other subsidiaries are not material. As authorized by the Missouri Public Service Commission (MoPSC) and the Alabama Public Service Commission (APSC), Spire Missouri, Spire Alabama and Spire Gulf accrue future asset removal costs associated with their property, plant and equipment even if a legal obligation does not exist. Such accruals are provided for through depreciation expense and are recorded with corresponding credits to regulatory liabilities or regulatory assets. When those utilities retire depreciable utility plant and equipment, they charge the associated original costs to accumulated depreciation and amortization, and any related removal costs incurred are charged to regulatory liabilities or regulatory assets. The difference between removal costs recognized in depreciation rates and the accretion expense and depreciation expense recognized for financial reporting purposes is a timing difference between recovery of these costs in rates and their recognition for financial reporting purposes. Accordingly, these differences are deferred as regulatory liabilities or regulatory assets. In the rate setting process, the regulatory liabilities or regulatory assets are excluded from the rate base upon which those utilities have the opportunity to earn their allowed rates of return.

73

 

The following table presents a reconciliation of the beginning and ending balances of asset retirement obligations at September 30, as reported in the balance sheets.

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Asset retirement obligations, beginning of year	$	519.6		$	540.1		$	143.4		$	153.4		$	362.8		$	374.3
Liabilities incurred during the period		3.2			11.1			1.2			1.4			0.5			7.4
Liabilities settled during the period		(9.2	)		(21.9	)		(4.1	)		(9.7	)		(2.0	)		(10.7	)
Accretion		21.1			21.8			5.9			6.2			14.7			15.0
Revisions in estimated cash flows		(13.8	)		(31.5	)		(35.8	)		(7.9	)		22.7			(23.2	)
Asset retirement obligations, end of year	$	520.9		$	519.6		$	110.6		$	143.4		$	398.7		$	362.8

NATURAL GAS AND PROPANE GAS – For Spire Missouri’s eastern region, inventory of natural gas in storage is priced on a last in, first out (LIFO) basis and inventory of propane gas in storage is priced on a first in, first out (FIFO) basis. For the rest of the Gas Utility segment, inventory of natural gas in storage is priced on the weighted average cost basis. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2022 was more than the LIFO cost by $37.3. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2021 was less than the LIFO cost by $14.0. The carrying value of the Utilities’ inventory is never adjusted to a lower net realizable value or market value because, pursuant to Purchased Gas Adjustment (PGA) clauses or a Gas Supply Adjustment (GSA) rider, actual gas costs are recovered in customer rates. Natural gas and propane gas storage inventory in Spire’s other operating segments is recorded at the lower of average cost or net realizable value.

BUSINESS COMBINATIONS AND GOODWILL – Spire’s acquisitions were accounted for using business combination accounting. Under this method, the purchase price paid by the acquirer is allocated to the assets acquired and liabilities assumed as of the acquisition date based on their fair value. Goodwill is measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. At September 30, 2022, goodwill included in Spire’s Gas Utility and Gas Marketing segments was $210.2 and zero, respectively, with the remainder held at the corporate level. Goodwill amounts have not changed since fiscal 2017, and there are no accumulated impairment losses. Spire and Spire Missouri evaluate goodwill for impairment as of July 1 of each year, or more frequently if events and circumstances indicate that goodwill might be impaired. At each test date, the assessments concluded that goodwill was not impaired. The Company updated the assessments as of September 30, 2022, determining that it remained more likely than not that the fair value of each reporting unit exceeded its carrying value.

IMPAIRMENT OF LONG-LIVED ASSETS – Long-lived assets classified as held and used are evaluated for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Whether impairment has occurred is determined by comparing the estimated undiscounted cash flows attributable to the assets with the carrying value of the assets. If the carrying value exceeds the undiscounted cash flows, the Company recognizes an impairment charge equal to the amount of the carrying value that exceeds the estimated fair value of the assets. In the period in which the Company determines an asset meets held-for-sale criteria, an impairment charge is recorded to the extent the book value exceeds its fair value less cost to sell.

On July 1, 2020, Spire’s Board of Directors, based upon the recommendation of senior management, revised the development plan for Spire Storage, resulting in an impairment charge of $140.8 related to Spire Storage assets (non-utility property on the balance sheet) in the quarter ended June 30, 2020. The revision was driven by the realization that a longer time horizon will be required for optimization and positioning of the storage facility to serve energy markets in the western United States. Among other factors, evaluations of the continuing evolution of market dynamics in the region led management to update models of various development alternatives. Separately in the quarter ended June 30, 2020, Spire recorded impairment charges totaling $7.8 related to two commercial compressed natural gas fueling stations (also non-utility property) as a result of revised projections reflecting lower diesel prices and slower conversions of Class 8 vehicles. The fair values used in measuring the impairment charges were determined with an expected present value technique using a discounted cash flow method under an income approach. In the quarter ended September 30, 2021, Spire sold one of the fueling stations and recorded a gain of $1.3.

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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 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. Refer to Note 10, Derivative Instruments and Hedging Activities, for more information about derivatives.

INCOME TAXES – Spire and its subsidiaries account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amount of existing assets and liabilities and the respective tax basis and for tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. The effects on deferred tax assets and liabilities of a change in enacted tax rates is recognized in income or loss for non-regulated operations, and in a regulatory asset or regulatory liability for regulated operations. A valuation allowance is established when it is more likely than not that some portion or all of the deferred tax assets will not be realized.

The Company accounts for uncertain tax positions in accordance with authoritative guidance. The authoritative guidance addresses the determination of whether tax benefits claimed, or expected to be claimed, on a tax return should be recorded in the financial statements. Spire may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the position will be sustained upon examination by the taxing authority, based on the technical merits of the position. Tax-related interest and penalties, if any, are classified as a liability on the balance sheets. For additional information on the accounting for income taxes, refer to Note 12, Income Taxes.

CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – All highly liquid debt instruments purchased with original maturities of three months or less are considered to be cash equivalents. Such instruments are carried at cost, which approximates market value. Outstanding checks on the Company’s and Utilities’ bank accounts in excess of funds on deposit create book overdrafts (which are funded at the time checks are presented for payment) and are classified as Other in the Current Liabilities section of the balance sheets. Changes in book overdrafts are reflected as Operating Activities in the statements of cash flows. In Spire’s statements of cash flows, total Cash, Cash Equivalents, and Restricted Cash included $14.0 and $7.0 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of September 30, 2022 and 2021, 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.

NATURAL GAS RECEIVABLE – Spire Marketing enters into natural gas transactions with natural gas pipeline and storage companies known as park and loan arrangements. Under the terms of the arrangements, Spire Marketing purchases natural gas from a third party and delivers that natural gas to the pipeline or storage company for the right to receive the same quantity of natural gas from that company at the same location in a future period. These arrangements are accounted for as non-monetary transactions under GAAP and are recorded at the carrying amount. As such, natural gas receivables are reflected in “Other” current assets on the Consolidated Balance Sheets at cost, which includes related fees associated with the transactions. In the period that the natural gas is returned to Spire Marketing, concurrent with the sale of the natural gas to a third party, the related natural gas receivable is expensed in the Consolidated Statements of Income. In conjunction with these transactions, Spire Marketing usually enters into New York Mercantile Exchange (NYMEX) and Intercontinental Exchange (ICE) natural gas futures, options, and swap contracts or fixed price sales agreements to protect against market changes in future sales prices.

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EARNINGS PER COMMON SHARE – GAAP requires dual presentation of basic and diluted earnings per share (EPS). EPS is computed using the two-class method, which is an earnings allocation method for computing EPS that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Certain of the Company’s stock-based compensation awards pay non-forfeitable dividends to the participants during the vesting period and, as such, are deemed participating securities. Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding that are increased for additional shares that would be outstanding if potentially dilutive non-participating securities were converted to common shares, pursuant to the treasury stock method. Shares attributable to equity units, non-participating stock options and time-vested restricted stock/units are excluded from the calculation of diluted earnings per share if the effect would be antidilutive. Shares attributable to non-participating performance-contingent restricted stock awards are only included in the calculation of diluted earnings per share to the extent the underlying performance and/or market conditions are satisfied (a) prior to the end of the reporting period or (b) would be satisfied if the end of the reporting period were the end of the related contingency period and the result would be dilutive. The Company’s EPS computations are presented in Note 4, Earnings Per Common Share.

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

	Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020
Natural gas purchases from Spire Marketing	$	86.3	$	92.5	$	56.9	$	3.2	$	10.4	$	6.3
Natural gas sales to Spire Marketing		—		1.1		0.1		0.5		0.1		0.3
Transportation services from Spire STL Pipeline LLC		32.0		32.0		27.9		—		—		—
Transportation services from Spire NGL Inc.		—		0.5		1.0		—		—		—

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 estimates for expected credit losses were increased as a result of considerations related to the outbreak of COVID-19 in 2020, including trends from previous economic downturns, the effects of moratoriums on gas service cutoffs, and the effects of slower-than-normal disconnection activity in general, offset by the amount subject to specific recovery under Missouri’s deferral order (see Note 15, Regulatory Matters). 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
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Allowance at beginning of year	$	30.3		$	24.9		$	23.0		$	22.6		$	18.1		$	14.9		$	6.6		$	5.5		$	6.3
Provision for expected credit losses		11.6			14.7			14.0			11.2			11.1			12.7			0.3			3.1			0.9
Write-offs, net of recoveries		(10.0	)		(9.3	)		(12.1	)		(8.9	)		(6.6	)		(9.5	)		(0.6	)		(2.0	)		(1.7	)
Allowance at end of year	$	31.9		$	30.3		$	24.9		$	24.9		$	22.6		$	18.1		$	6.3		$	6.6		$	5.5

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FINANCE RECEIVABLES – Spire Alabama finances third party contractor sales of merchandise including gas furnaces and appliances. At September 30, 2022 and 2021, Spire Alabama’s finance receivable totaled approximately $7.1 and $7.8, respectively. Financing is available only to qualified customers who meet creditworthiness thresholds for customer payment history and external agency credit reports. Spire Alabama relies upon ongoing payments as the primary indicator of credit quality during the term of each contract. The allowance for credit losses is recognized using an estimate of write-off percentages based on historical experience. Delinquent accounts are evaluated on a case-by-case basis and, absent evidence of debt repayment, after 90 days are due in full and assigned to a third-party collection agency. The remaining finance receivable is written off approximately 12 months after being assigned to the third-party collection agency. Spire Alabama had finance receivables past due 90 days or more of $0.3 at September 30, 2022 and 2021.

GROUP MEDICAL AND WORKERS’ COMPENSATION RESERVES – The Company self-insures its group medical and workers’ compensation costs and carries stop-loss coverage in relation to medical claims and workers’ compensation claims. Reserves for amounts incurred but not reported are established based on historical cost levels and lags between occurrences and reporting.

FAIR VALUE MEASUREMENTS – Certain assets and liabilities are recognized or disclosed at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.

The levels of the hierarchy are described below:

• Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

• Level 2 – Pricing inputs other than quoted prices included within Level 1, which are either directly or indirectly observable for the asset or liability as of the reporting date. These inputs are derived principally from, or corroborated by, observable market data.

• Level 3 – Pricing that is based upon inputs that are generally unobservable that are based on the best information available and reflect management’s assumptions about how market participants would price the asset or liability.

Assessment of the significance of a particular input to the fair value measurements may require judgment and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. Additional information about fair value measurements is provided in Note 8, Fair Value of Financial Instruments, Note 9, Fair Value Measurements, and Note 13, Pension Plans and Other Postretirement Benefits.

STOCK-BASED COMPENSATION – The Company accounts for share-based compensation arrangements in accordance with ASC Topic 718, Compensation - Stock Compensation. The Company measures stock-based compensation awards at fair value at the date of grant and recognizes the compensation cost of the awards over the requisite service period. Forfeitures are recognized in the period they occur. Refer to Note 3, Stock-Based Compensation, for further discussion of the accounting for the Company’s stock-based compensation plans.

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2. REVENUE

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

	2022			2021			2020
Spire
Gas Utility:
Residential	$	1,416.6		$	1,234.0		$	1,184.3
Commercial & industrial		338.9			586.0			383.0
Transportation		118.0			122.9			115.8
Off-system & other incentive		42.0			152.7			38.4
Other customer revenue		19.9			22.2			26.2
Total revenue from contracts with customers		1,935.4			2,117.8			1,747.7
Changes in accrued revenue under alternative revenue programs		10.7			1.5			4.3
Total Gas Utility operating revenues		1,946.1			2,119.3			1,752.0
Gas Marketing		234.9			96.5			87.9
Other		69.2			67.7			57.8
Total before eliminations		2,250.2			2,283.5			1,897.7
Intersegment eliminations (see Note 14, Information by Operating Segment)		(51.7	)		(48.0	)		(42.3	)
Total Operating Revenues	$	2,198.5		$	2,235.5		$	1,855.4
Spire Missouri
Residential	$	1,061.4		$	882.1		$	859.6
Commercial & industrial		177.2			436.1			241.4
Transportation		33.3			33.5			32.9
Off-system & other incentive		25.2			145.6			35.1
Other customer revenue		11.1			16.3			22.3
Total revenue from contracts with customers		1,308.2			1,513.6			1,191.3
Changes in accrued revenue under alternative revenue programs		12.8			3.0			2.3
Total Operating Revenues	$	1,321.0		$	1,516.6		$	1,193.6
Spire Alabama
Residential	$	291.6		$	288.0		$	267.8
Commercial & industrial		119.1			114.9			109.4
Transportation		74.4			78.7			72.9
Off-system & other incentive		16.8			7.1			3.2
Other customer revenue		5.5			1.9			1.9
Total revenue from contracts with customers		507.4			490.6			455.2
Changes in accrued revenue under alternative revenue programs		1.7			3.4			(0.2	)
Total Operating Revenues	$	509.1		$	494.0		$	455.0

The Utilities sell natural gas to residential and other customers. The sale of natural gas is governed by the various state utility commissions, which set rates, charges, and terms and conditions of service, collectively included in a “tariff.” The performance obligation, which relates to the promise to provide natural gas, is satisfied over time as the customer simultaneously receives and consumes the natural gas, and revenue is recognized accordingly.

The Utilities’ transportation revenue relates to the promise to transport the specified quantities of natural gas at tariff rates. This performance obligation is satisfied over time as the gas is transported, and revenue is recognized as invoiced monthly.

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The Utilities have alternative revenue programs (ARPs), which represent an agreement between the utility and its regulator, currently consisting of decoupling mechanisms (also known as weather normalization adjustments) and incentive programs (primarily Alabama’s Cost Control Measure). When the criteria to recognize additional (or reduced) revenue from ARPs have been met, the Utilities establish a regulatory asset (or liability). When amounts previously recognized for ARPs are billed, the Utilities reduce the regulatory asset (or liability) and increase (or decrease) accounts receivable. Billed amounts, which are part of the overall tariff paid by customers, are included in revenue from contracts with customers, while the change in the related regulatory asset or liability is presented as revenue from ARPs. Depending on whether the beginning accrued ARP balance was a regulatory asset or liability and depending on the size and direction of the current period accrual, the amount presented as revenue from ARPs could be negative.

The Utilities read meters and bill customers on monthly cycles. Spire Missouri, Spire Gulf and Spire Mississippi record their gas utility revenues from gas sales and transportation services on an accrual basis that includes estimated amounts for gas delivered but not yet billed. The accruals for unbilled revenues are reversed in the subsequent accounting period when meters are actually read and customers are billed. Spire Alabama records natural gas distribution revenues in accordance with the tariff established by the APSC. Unbilled revenue is accrued in an amount equal to the related gas cost, as profit margin is not considered earned until billed. Spire’s other subsidiaries, including Spire Marketing, record revenues when earned, as the product is delivered or as services are performed.

Gas Marketing’s contracts are derivatives. Wholesale contracts (with producers, municipalities, and utility companies) are subject to derivative accounting. Retail contracts (with large commercial and industrial customers) are designated as “normal purchase, normal sale” arrangements and are therefore accounted for as revenue from contracts with customers. The performance obligation is satisfied over time by the transfer of control of natural gas to the customer, and revenue is recognized as invoiced monthly.

Payments are generally required within 30 days of billing, and contracts generally do not have a significant financing component. Spire’s revenues are not subject to significant returns, refunds, or warranty obligations.

Spire, Spire Missouri, and Spire Alabama have elected to apply a “right to invoice” practical expedient, recognizing revenue for volumes delivered for which they have a right to invoice, as long as that amount corresponds with the value to the customer. Disclosures about remaining performance obligations are not required because either contracts have an original expected duration of one year or less, or revenue is recognized under the right to invoice practical expedient, or both.

Sales taxes imposed on applicable Spire Alabama and Spire Missouri sales are billed to customers. These amounts are not recorded in the statements of income but are recorded as tax collections payable and included in the “Other” line of the Current Liabilities section of the balance sheets.

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.”

	2022		2021		2020
Spire	$	109.8	$	94.0	$	91.5
Spire Missouri		79.6		64.3		63.5
Spire Alabama		25.5		25.1		23.3

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3. STOCK-BASED COMPENSATION

The Spire 2015 Equity Incentive Plan (EIP) was approved by shareholders of Spire on January 29, 2015 and amended on November 9, 2018. The purpose of the EIP is to encourage directors, officers, and key employees of the Company and its subsidiaries to contribute to the Company’s success and align their interests with that of shareholders. To accomplish this purpose, the Compensation Committee (“Committee”) of Spire’s Board of Directors (the “Board”) may grant awards under the EIP that may be earned by achieving performance objectives and/or other criteria as determined by the Committee. Under the terms of the EIP, officers and employees of the Company and its subsidiaries, as determined by the Committee, are eligible to be selected for awards. The EIP provides for restricted stock, restricted stock units, qualified and non-qualified stock options, stock appreciation rights, and performance shares payable in stock, cash, or a combination of both. The EIP generally provides a minimum vesting period of at least three years for each type of award, with pro rata vesting permitted during the minimum three-year vesting period. The maximum number of shares reserved for issuance under the EIP is 1,000,000.

The Company issues new shares to satisfy employee restricted stock awards.

Restricted Stock Awards

During fiscal 2022, the Company granted 128,396 performance-contingent restricted share units to executive officers and key employees at a weighted average grant date fair value of $67.43 per share. This number represents the target shares that can be earned pursuant to the terms of the awards. The share units have a performance period ending September 30, 2025. While the participants have no interim voting rights on these share units, dividends accrue during the performance period and are paid to the participants upon vesting but are subject to forfeiture if the underlying share units do not vest.

The number of share units that will ultimately vest is dependent upon the attainment of certain levels of earnings and other strategic goals, as well as the Company’s level of total shareholder return (TSR) during the performance period relative to a comparator group of peer companies. This TSR provision is considered a market condition under GAAP and is discussed further below. The maximum amount of shares that can be earned pursuant to the terms of the awards is 200% of the target units granted.

The weighted average grant date fair value of performance-contingent restricted share units granted during fiscal years 2021 and 2020 was $68.69 and $76.19 per share, respectively.

Fiscal 2022 activity of restricted stock units subject to performance and/or market conditions is presented below:

				Weighted
				Average
				Grant Date
				Fair Value
	Units			Per Unit
Nonvested at September 30, 2021		312,596		$	74.33
Granted		128,396		$	67.43
Vested		(91,111	)	$	79.40
Forfeited		(6,357	)	$	69.43
Nonvested at September 30, 2022		343,524		$	70.14

For the year ended September 30, 2022, the total number of shares that could be issued if all outstanding award grants attain maximum performance payout is 687,048.

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During fiscal 2022, the Company granted 62,945 shares of time-vested restricted stock to executive officers and key employees at a weighted average grant date fair value of $63.57 per share. Unless forfeited based on terms of the agreements, these shares will vest in fiscal 2025. In the interim, participants receive full voting rights and dividends, which are not subject to forfeiture. The weighted average grant date fair value of time-vested restricted stock and restricted stock units awarded to employees during fiscal years 2021 and 2020 was $64.29 and $76.13 per share, respectively.

During fiscal 2022, the Company granted 16,290 shares of time-vested restricted stock to non-employee directors at a weighted average grant date fair value of $66.31 per share. These shares vested in fiscal 2022, six months after the grant date. The weighted average grant date fair value of restricted stock awarded to non-employee directors during fiscal years 2021 and 2020 was $62.35 and $84.58 per share, respectively.

Time-vested restricted stock and stock unit activity for fiscal 2022 is presented below:

				Weighted
				Average
				Grant Date
	Shares/			Fair Value
	Units			Per Share
Nonvested at September 30, 2021		110,300		$	70.98
Granted		62,945		$	63.57
Vested		(46,970	)	$	72.67
Forfeited		(4,030	)	$	68.62
Nonvested at September 30, 2022		122,245		$	66.60

For restricted stock and stock units (performance-contingent and time-vested) that vested during fiscal years 2022, 2021, and 2020, the Company withheld 28,055 shares, 16,787 shares, and 41,353 shares, respectively, at weighted average prices of $63.97, $65.99 and $77.07 per share, respectively, pursuant to elections by employees to satisfy tax withholding obligations. The total fair value of restricted stock (performance-contingent and time-vested) that vested during fiscal years 2022, 2021, and 2020 was $10.1, $6.5, and $9.8, respectively, and the related tax benefit was $3.8, $2.5, and $3.7, respectively. None of the tax benefits have been realized.

The Company allows participants in the EIP the ability to defer a portion or all of their award. As at September 30, 2022, a total of 228,988 shares (at target payout) have been deferred by Participants.

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Equity Compensation Costs

Compensation cost for performance-contingent restricted stock and stock unit awards is based upon the probable outcome of the performance conditions. For shares or units that do not vest or that are not expected to vest due to the outcome of the performance conditions (excluding market conditions), no compensation cost is recognized and any previously recognized compensation cost is reversed.

The fair value of awards of performance-contingent and time-vested restricted stock and restricted stock units, not subject to the TSR provision, are estimated using the closing price of the Company’s stock on the grant date. For those awards that do not pay dividends during the vesting period, the estimate of fair value is reduced by the present value of the dividends expected to be paid on the Company’s common stock during the performance period, discounted using an appropriate U.S. Treasury yield. For shares subject to the TSR provision, the estimated impact of this market condition is reflected in the grant date fair value per share of the awards. Accordingly, compensation cost is not reversed to reflect any actual reductions in the awards that may result from the TSR provision. However, if the Company’s TSR during the performance period ranks below the level specified in the award agreements, relative to a comparator group of companies, and the Committee elects not to reduce the award (or reduce by a lesser amount), this election would be accounted for as a modification of the original award and additional compensation cost would be recognized at that time. The grant date fair value of the awards subject to the TSR provision awarded during fiscal years 2022, 2021 and 2020 was valued by a Monte Carlo simulation model that assessed the probabilities of various TSR outcomes. The significant assumptions used in the Monte Carlo simulations are as follows:

	2022		2021		2020
Risk-free interest rate		0.79%		0.22%		1.57%
Expected dividend yield of stock		—		—		—
Expected volatility of stock		32.2%		31.4%		16.8%
Vesting period (in years)		3.0		3.0		3.0

The risk-free interest rate was based on the yield on U.S. Treasury securities matching the vesting period. A zero-percent dividend yield was used, which is mathematically equivalent to the assumption that dividends are reinvested as they are paid. The expected volatility is based on the historical volatility of the Company’s stock. Volatility assumptions were also made for each of the companies included in the comparator group. The vesting period is equal to the performance period set forth in the terms of the award.

The amounts of compensation cost recognized for share-based compensation arrangements are presented below:

	2022			2021			2020
Total compensation cost	$	7.5		$	16.6		$	9.4
Compensation cost capitalized		(1.1	)		(2.7	)		(0.6	)
Compensation cost recognized in net income		6.4			13.9			8.8
Income tax benefit recognized in net income		(1.5	)		(3.2	)		(2.1	)
Compensation cost recognized in net income, net of income tax	$	4.9		$	10.7		$	6.7

As of September 30, 2022, there was $11.2 of total unrecognized compensation cost related to non-vested share-based compensation arrangements, which is expected to be recognized over a weighted average period of 1.7 years.

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4. EARNINGS PER COMMON SHARE

	2022		2021		2020
Basic Earnings Per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Basic Earnings Per Share of Common Stock	$	3.96	$	4.97	$	1.44
Diluted Earnings per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.1		51.7		51.3
Diluted Earnings Per Share of Common Stock	$	3.95	$	4.96	$	1.44
* Calculation excludes certain outstanding common shares (shown in millions by period at the right) attributable to stock units subject to performance or market conditions and restricted stock, which could have a dilutive effect in the future		0.1		0.1		0.1

5. SHAREHOLDERS’ EQUITY

Spire

Preferred Stock

At September 30, 2022 and 2021, Spire had authorized 5,000,000 shares of preferred stock.

On May 21, 2019, Spire completed the public offering of 10,000,000 depositary shares (the “Depositary Shares”), each representing a 1/1,000th interest in a share of the Company’s 5.90% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $25.00 per share, with a liquidation preference of $25,000 per share (the “Preferred Stock”). The transaction resulted in $242.0 of net proceeds, after deducting commissions and sale expenses, which proceeds were used to (i) refinance long-term and short-term Spire debt and (ii) fund capital expenditures at both the Utilities and Spire’s gas-related businesses.

Dividends on the Preferred Stock, when declared by the Board, are payable on the liquidation preference amount, on a cumulative basis, quarterly in arrears on the 15th day of February, May, August and November of each year, beginning on August 15, 2019. Dividends are payable out of amounts legally available for the payment of dividends at an annual rate equal to 5.90% of the liquidation preference per share of Preferred Stock (equivalent to $25.00 per Depositary Share). Dividends accumulate daily and are cumulative from May 21, 2019.

Under the terms of the Preferred Stock, the Company’s ability to declare or pay dividends on, or purchase or redeem, shares of its common stock or any class or series of capital stock of the Company that rank junior to the Preferred Stock are subject to certain restrictions in the event that the Company does not declare and pay the full cumulative dividends on the Preferred Stock through the most recently completed quarterly dividend period.

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Spire may, at its option, redeem the Preferred Stock (i) in whole, but not in part, at any time prior to August 15, 2024, within 120 days after a ratings event where a rating agency amends, clarifies or changes the criteria it uses to assign equity credit for securities such as the Preferred Stock, at a redemption price in cash equal to $25,500 per share, or (ii) in whole or in part, from time to time, on or after August 15, 2024, at a redemption price in cash equal to $25,000 per share, plus, in each case, all accumulated and unpaid dividends (whether declared or not) up to such redemption date.

Shareholders of the Preferred Stock generally have no voting rights with respect to matters that generally require the approval of voting stockholders. The limited voting rights of holders of the Preferred Stock include the right to vote on certain matters that may affect the preference or special rights of the Preferred Stock. In addition, if and whenever dividends on any shares of Preferred Stock have not been declared and paid for at least six dividend periods, whether or not consecutive, the number of directors then constituting the Board shall automatically be increased by two (to be elected by the holders of the Preferred Stock) until all accumulated and unpaid dividends on the Preferred Stock have been paid in full.

Equity Units

In February 2021, Spire issued 3.5 million equity units, initially in the form of Corporate Units, for an aggregate stated amount of $175.0, resulting in net proceeds (after underwriting fees and other issuance costs) of $169.3. Each “Corporate Unit” has a stated amount of fifty dollars and consists of (i) a stock purchase contract and (ii) a 1/20, or 5%, undivided beneficial ownership interest in one thousand dollars principal amount of Spire’s 2021 Series A 0.75% Remarketable Senior Notes due March 1, 2026 (RSNs). The RSNs are pledged as collateral to secure the holder’s obligation under the related stock purchase contracts. Each stock purchase contract obligates the holder to purchase, and Spire to issue and deliver, on March 1, 2024, for a price of fifty dollars in cash, a variable number of shares of its common stock as follows (subject to anti-dilution adjustments).

If the applicable market value* per share	Number of shares to be purchased per
of Spire common stock is:	stock purchase contract is:
Equal to or greater than $78.6906 (“threshold appreciation price”)	0.6354 (“minimum settlement rate”)
Less than $78.6906, but greater than $64.24	$50.00 ÷ applicable market value*
Less than or equal to $64.24 (“reference price”)	0.7783 (“maximum settlement rate”)

*Based on the volume-weighted average price of Spire common stock during the 20 trading days before settlement.

If a holder elects to settle purchase contracts early, the holder would pay fifty dollars per unit and receive 0.6354 shares per unit.

The Company makes quarterly interest payments on the RSNs at the rate of 0.75% per year and quarterly contract adjustment payments on the stock purchase contracts at the rate of 6.75%. The RSNs and the contract adjustment payments are structurally subordinated to all liabilities of Spire’s subsidiaries.

At issuance, the Company recorded the $35.0 present value of the stock purchase contract payments as a liability (reflected in “Other” current and noncurrent liabilities on the balance sheet) offset by a charge to additional paid-in capital in equity. This noncash financing activity has been excluded from the statement of cash flows. Interest payments on the RSNs are recorded as interest expense and stock purchase contract payments are charged against the liability. Accretion of the stock purchase contract liability is recorded as imputed interest expense. In calculating diluted EPS, the Company applies the treasury stock method to the Corporate Units. These securities have not had an effect on diluted EPS.

In order to secure funds necessary for the holders to pay the purchase price of the common stock on the purchase contract settlement date, the remarketing agent will remarket the RSNs on behalf of the current holders to new third-party investors. Following any successful remarketing of the RSNs, the interest rate on the RSNs will be reset, interest will be payable on a semi-annual basis, and Spire will cease to have the option to redeem the RSNs, other than in connection with the occurrence or continuance of certain special events.

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ATM Program

On February 6, 2019, Spire entered into 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 pursuant to Spire’s universal shelf registration statement and a prospectus supplement. Under this program, a total of 626,249 shares with an aggregate offering price of $47.8 were issued in fiscal 2019 and 2020, and 354,000 shares with an aggregate offering price of $23.5 were issued in the second quarter of fiscal 2022. On April 28, 2022, Spire’s Board of Directors approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 before the May 2025 expiration of the new universal shelf registration statement on Form S-3 filed in May 2022, under which a total of 365,625 shares with an aggregate offering price of $27.7 were issued in the third quarter of fiscal 2022.

Other Equity Information

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 158,535 and 153,190 shares at September 30, 2022 and November 11, 2022, respectively, remaining available for issuance under this Form S-3. Spire also has 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 Missouri

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock or to make loans to its parent company. These mortgage restrictions are applicable regardless of whether the stock is publicly held or held solely by Spire Missouri’s parent company. Under the most restrictive of these provisions, no cash dividend may be declared or paid if, after the dividend, the aggregate net amount spent for all dividends after September 30, 1953 would exceed a maximum amount determined by a formula set out in the mortgage. Under that formula, the maximum amount is the sum of $8.0 plus earnings applicable to common stock (adjusted for stock repurchases and issuances) for the period from September 30, 1953 to the last day of the quarter before the declaration or payment date for the dividends. As of September 30, 2022 and 2021, the amount under the mortgage’s formula that was available to pay dividends was $1,579.4 and $1,413.4, respectively. Thus, all of Spire Missouri’s retained earnings were free from such dividend restrictions as of those dates.

Spire Missouri has 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. 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. As of September 30, 2022, the entire amount remained available under this authorization. 

At September 30, 2022 and 2021, Spire Missouri had authorized 1,480,000 shares of preferred stock, but none were issued and outstanding.

Spire Alabama

At September 30, 2022 and 2021, Spire Alabama had authorized 120,000 shares of preferred stock, but none were issued and outstanding.

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Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income (AOCI), net of income taxes, recognized in the balance sheets at September 30 were as follows:

	Net			Defined Benefit			Net Unrealized
	Unrealized			Pension and			Gain (Loss) on
	Gain (Loss)			Other			Available-for-
	on Cash Flow			Postretirement			Sale Debt
	Hedges			Benefit Plans			Securities			Total
Spire
Balance at September 30, 2020	$	(38.4	)	$	(2.9	)	$	0.1		$	(41.2	)
Other comprehensive income (loss)		46.3			(1.3	)		(0.2	)		44.8
Balance at September 30, 2021		7.9			(4.2	)		(0.1	)		3.6
Other comprehensive income (loss)		42.5			1.5			(0.4	)		43.6
Balance at September 30, 2022	$	50.4		$	(2.7	)	$	(0.5	)	$	47.2
Spire Missouri
Balance at September 30, 2020	$	—		$	(2.9	)	$	—		$	(2.9	)
Other comprehensive loss		—			(1.3	)		—			(1.3	)
Balance at September 30, 2021		—			(4.2	)		—			(4.2	)
Other comprehensive income		—			1.5			—			1.5
Balance at September 30, 2022	$	—		$	(2.7	)	$	—		$	(2.7	)

Income tax expense (benefit) recorded for items of other comprehensive income (loss) reported in the statements of comprehensive income is calculated by applying statutory federal, state, and local income tax rates applicable to ordinary income. The tax rates applied to individual items of other comprehensive income (loss) are similar within each reporting period. For the periods presented, Spire Alabama had no AOCI balances.

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6. LONG-TERM DEBT

The composition of long-term debt as of September 30 is shown in the following tables.

	2022			2021
Spire
3.31% Notes Payable, due December 15, 2022	$	25.0		$	25.0
3.54% Senior Notes, due February 27, 2024		150.0			150.0
0.75% Remarketable Senior Notes, due March 1, 2026		175.0			175.0
3.13% Senior Notes, due September 1, 2026		130.0			130.0
3.93% Senior Notes, due March 15, 2027		100.0			100.0
4.70% Senior Notes, due August 15, 2044		250.0			250.0
Total principal of Spire Missouri long-term debt (see below)		1,648.0			1,348.0
Total principal of Spire Alabama long-term debt (see below)		575.0			625.0
Other subsidiaries' long-term debt:
5.00% First Mortgage Bonds, due September 30, 2031		42.0			42.0
2.95% Notes, with annual principal payments through December 2034		123.9			129.6
3.52% First Mortgage Bonds, due September 30, 2049		40.0			40.0
Total principal of long-term debt		3,258.9			3,014.6
Less: Unamortized discounts and debt issuance costs		(19.2	)		(19.7	)
Less: Current portion		(281.2	)		(55.8	)
Long-term debt, excluding current portion	$	2,958.5		$	2,939.1
Spire Missouri
First Mortgage Bonds:
3.40% Series, due August 15, 2023	$	250.0		$	250.0
Floating Rate Series, due December 2, 2024		300.0			—
3.40% Series, due March 15, 2028		45.0			45.0
7.00% Series, due June 1, 2029	19.3			19.3
2.84% Series, due November 15, 2029		275.0			275.0
7.90% Series, due September 15, 2030		30.0			30.0
3.68% Series, due September 15, 2032		50.0			50.0
6.00% Series, due May 1, 2034		99.3			99.3
6.15% Series, due June 1, 2036		54.5			54.5
4.63% Series, due August 15, 2043		99.9			99.9
4.23% Series, due September 15, 2047		70.0			70.0
3.30% Series, due June 1, 2051		305.0			305.0
4.38% Series, due September 15, 2057		50.0			50.0
Total principal of Spire Missouri long-term debt		1,648.0			1,348.0
Less: Unamortized discounts and debt issuance costs		(10.3	)		(9.6	)
Less: Current portion		(250.0	)		—
Spire Missouri long-term debt, excluding current portion	$	1,387.7		$	1,338.4
Spire Alabama
3.86% Notes, due December 22, 2021	$	—		$	50.0
3.21% Notes, due September 15, 2025		35.0			35.0
2.88% Notes, due December 1, 2029		100.0			100.0
2.04% Notes, due December 15, 2030		150.0			150.0
5.90% Notes, due January 15, 2037		45.0			45.0
4.31% Notes, due December 1, 2045		80.0			80.0
3.92% Notes, due January 15, 2048		45.0			45.0
4.64% Notes, due January 15, 2049		90.0			90.0
4.02% Notes, due January 15, 2058		30.0			30.0
Total principal of Spire Alabama long-term debt		575.0			625.0
Less: Unamortized discounts and debt issuance costs		(3.5	)		(3.8	)
Less: Current portion		—			(50.0	)
Spire Alabama long-term debt, excluding current portion	$	571.5		$	571.2

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Spire Missouri's $300.0 of first mortgage bonds due December 2, 2024 are secured equally with all its other first mortgage bonds. Interest is payable quarterly in arrears at a floating rate based on the compounded secured overnight financing rate plus 50 basis points, with a maximum rate of the lesser of 8% or the maximum rate then permitted by applicable law.

Maturities of long-term debt for Spire on a consolidated basis, Spire Missouri and Spire Alabama for the five fiscal years after September 30, 2022 are as follows:

	2023		2024		2025		2026		2027
Spire	$	281.2	$	156.6	$	342.0	$	312.5	$	108.1
Spire Missouri		250.0		—		300.0		—		—
Spire Alabama		—		—		35.0		—		—

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of September 30, 2022, there were no events of default under these financial covenants.

After fiscal year end, 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.

Spire

At September 30, 2022, including the current portion but excluding unamortized discounts and debt issuance costs, Spire had long-term debt totaling $3,258.9, of which $1,648.0 was issued by Spire Missouri, $575.0 was issued by Spire Alabama and $205.9 was issued by other subsidiaries. Except for $300.0 of Spire Missouri floating-rate bonds, all long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. However, increases and decreases in fair value would impact earnings and cash flows only if the Company were to reacquire any of these issues in the open market prior to maturity. Under GAAP applicable to the Utilities’ regulated operations, losses or gains on early redemption of long-term debt would typically be deferred as regulatory assets or regulatory liabilities and amortized over a future period. Interest expense shown on Spire’s consolidated statement of income is net of capitalized interest totaling $4.5, $4.4 and $5.8 for the years ended September 30, 2022, 2021 and 2020, respectively.

As indicated in Note 5, Shareholders’ Equity, Spire has a shelf registration statement on Form S-3 on file with the SEC for the issuance of equity and debt securities.

Spire Missouri

At September 30, 2022, including the current portion but excluding unamortized discounts and debt issuance costs, Spire Missouri had long-term debt totaling $1,648.0. Except for $300.0 of floating-rate bonds, all long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. Interest expense shown on Spire Missouri’s statement of comprehensive income is net of capitalized interest totaling $0.6, $0.2 and $0.8 for the years ended September 30, 2022, 2021 and 2020, respectively.

As indicated in Note 5, Shareholders’ Equity, Spire Missouri has a shelf registration on Form S-3 on file with the SEC for issuance of equity and debt securities, which expires on May 9, 2025. 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. As of September 30, 2022, the entire amount remained available under this authorization.

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock, which are described in Note 5, Shareholders’ Equity.

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Spire Alabama

At September 30, 2022, including the current portion (none) but excluding unamortized debt issuance costs, Spire Alabama had fixed-rate long-term debt totaling $575.0. While these long-term debt issues are fixed-rate, they are subject to changes in fair value as market interest rates change. Interest expense shown on Spire Alabama’s statement of income is net of capitalized interest totaling $3.2, $3.2 and $1.9 for the years ended September 30, 2022, 2021 and 2020, respectively.

Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

7. NOTES PAYABLE AND CREDIT AGREEMENTS

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 September 30, 2022, total debt was less than or equal to 60% of total capitalization for each borrower. There were no borrowings against this credit facility as of September 30, 2022 and 2021.

Spire has a commercial paper program (“CP Program”) pursuant to which it 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.

In March 2021, Spire Missouri entered into a loan agreement with several banks for a $250.0, 364-day unsecured term loan with an interest rate based on LIBOR plus 65 basis points. The loan was repaid in March 2022.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of September 30, 2022, $777.8 of Spire’s short-term borrowings were used to support lending to the Utilities.

	Spire			Spire						Spire
	(Parent Only)			Missouri						Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Year Ended September 30, 2022
Highest borrowings outstanding	$	1,079.0		$	250.0		$	456.6		$	265.2		$	1,079.0
Lowest borrowings outstanding		408.0			—			43.2			38.4			462.5
Weighted average borrowings		636.2			113.0			244.9			152.6			749.2
Weighted average interest rate		1.2	%		0.8	%		0.4	%		0.5	%		1.1	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		0.0	%		3.3	%		3.3	%		3.3	%
As of September 30, 2021
Borrowings outstanding	$	422.0		$	250.0		$	240.9		$	49.0		$	672.0
Weighted average interest rate		0.2	%		0.7	%		0.2	%		0.2	%		0.4	%

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8. FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis were as follows:

					Classification of
					Estimated Fair Value
					Quoted
					Prices in		Significant
					Active		Observable
	Carrying		Fair		Markets		Inputs
	Amount		Value		(Level 1)		(Level 2)
Spire
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 September 30, 2021
Cash and cash equivalents	$	4.3	$	4.3	$	4.3	$	—
Notes payable		672.0		672.0		—		672.0
Long-term debt, including current portion		2,994.9		3,375.9		—		3,375.9
Spire Missouri
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 September 30, 2021
Note Payable	$	250.0	$	250.0	$	—	$	250.0
Notes payable - associated companies		240.9		240.9		—		240.9
Long-term debt		1,338.4		1,540.4		—		1,540.4
Spire Alabama
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 September 30, 2021
Notes payable - associated companies	$	49.0	$	49.0	$	—	$	49.0
Long-term debt, including current portion		621.2		707.5		—		707.5

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9. FAIR VALUE MEASUREMENTS

The information presented below 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. The mutual funds included in Level 2 are valued based on the closing net asset value per unit.

Derivative instruments included in Level 1 are valued using quoted market prices on the NYMEX or the Intercontinental Exchange (ICE). Derivative instruments classified in Level 2 include physical commodity derivatives that are valued using broker or dealer quotation services 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 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 September 30, 2022 or 2021. 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 investment gains or losses in the corresponding periodic income statement. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net on the balance sheets when a legally enforceable netting agreement exist between the Company, Spire Missouri or Spire Alabama and the counterparty to the derivative contract. For additional information on derivative instruments, see Note 10, Derivative Instruments and Hedging Activities.

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Spire

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/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	$	318.2	$	—	$	—	$	(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 September 30, 2021
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		114.7		—		(93.7	)		21.0
Natural gas commodity contracts		—		35.2		—		(5.5	)		29.7
Other:
U.S. stock/bond mutual funds		26.2		—		—		—			26.2
Interest rate swaps		12.6		—		—		(5.2	)		7.4
Total	$	166.6	$	149.9	$	—	$	(208.4	)	$	108.1
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		62.0		—		(62.0	)		—
Natural gas commodity contracts		—		96.7		—		(5.5	)		91.2
Other:
Interest rate swaps		5.7		—		—		(5.2	)		0.5
Total	$	6.0	$	158.7	$	—	$	(73.0	)	$	91.7

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Spire Missouri

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/Payables			Total
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 September 30, 2021
ASSETS
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Total	$	127.8	$	—	$	—	$	(104.0	)	$	23.8
LIABILITIES
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—

Spire Alabama

Spire Alabama occasionally utilizes a gasoline derivative program to stabilize the cost of fuel used in operations. As of September 30, 2022 and September 30, 2021, there were no gasoline derivatives outstanding.

10. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Spire

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options and swaps for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. Further discussion of this policy can be found in the Spire Missouri section.

From time to time Spire Missouri and Spire Alabama purchase NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment. Further information on these derivatives can be found in the Spire Missouri and Spire Alabama sections, respectively.

In the course of its business, Spire’s gas marketing subsidiary, Spire Marketing (including a wholly owned subsidiary), enters into commitments associated with the purchase or sale of natural gas. Certain of Spire Marketing’s derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of ASC Topic 815 and are accounted for as executory contracts on an accrual basis. Any of Spire Marketing’s derivative natural gas contracts that are not designated as normal purchases or normal sales are accounted for at fair value. At September 30, 2022, the fair values of 492.2 million MMBtu of non-exchange-traded natural gas commodity contracts were reflected in the Consolidated Balance Sheet. Of these contracts, 347.8 million MMBtu will settle during fiscal 2023, and 88.8 million MMBtu, 47.5 million MMBtu, 7.0 million MMBtu, and 1.1 million MMBtu will settle during fiscal years 2024, 2025, 2026 and 2027, respectively. These contracts have not been designated as hedges; therefore, changes in the fair value of these contracts are reported in earnings each period.

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Furthermore, Spire Marketing manages the price risk associated with its fixed-priced commitments by either closely matching the offsetting physical purchase or sale of natural gas at fixed prices or through the use of NYMEX or ICE futures, swap, and option contracts to lock in margins.

At September 30, 2022, Spire Marketing’s unmatched fixed-price positions were not material to Spire’s financial position or results of operations. Spire Marketing’s NYMEX and ICE natural gas futures, swap and option contracts used to lock in margins may be designated as cash flow hedges of forecasted transactions for financial reporting purposes.

In the second quarter of 2020, the Company entered into multiple ten-year interest rate swaps with fixed interest rates ranging from 0.934% to 1.2975% for a total notional amount of $75.0 to protect itself against adverse movements in interest rates on future interest rate payments. The Company recorded a $9.8 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022. In the third quarter of 2021 the Company entered into multiple ten-year interest rate swaps with fixed interest rates ranging from 2.008% to 2.1075% for a total notional amount of $150.0 to protect itself against adverse movements in interest rates on future interest rate payments. The Company recorded a $17.9 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

In the fourth quarter of 2021, the Company entered into two swap contracts. Both contracts are ten-year interest rate swaps; the first swap has a notional amount of $50.0 with a fixed interest rate of 1.597%, while the second swap has a notional amount of $50.0 with a fixed interest rate of 1.821%. The Company recorded a $5.7 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

In the first quarter of fiscal 2022, the Company entered into a ten-year interest rate swap contract with a notional amount of $50.0 with a fixed interest rate of 1.4918%. The Company recorded a $7.0 mark-to-market gain to accumulated other comprehensive income on this swap for the twelve months ended September 30, 2022.

In the second quarter of fiscal 2022, the Company entered into multiple ten-year interest rate swap contracts with a cumulative total notional amount of $150.0 with fixed interest rates ranging from 1.64750% to 1.7460%. The Company recorded a $16.2 mark-to-market gain to accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

As of  September 30, 2022, the Company has recorded through other comprehensive income a cumulative mark-to-market net asset of $63.6 on open swaps. The Company’s and Spire Missouri’s exchange-traded/cleared derivative instruments consist primarily of NYMEX and ICE positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX and ICE natural gas futures and swap positions at September 30, 2022 and 2021 were as follows:

	September 30, 2022				September 30, 2021
Gas Marketing	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		76.3		54		103.3		51
Natural gas options purchased, net		3.7		12		7.1		15
Natural gas basis swaps purchased		61.7		39		101.7		27
Gas Utility
Natural gas futures purchased		13.0		12		52.8		12

At September 30, 2022, Spire Missouri also had 23.4 MMBtu of other price mitigation in price mitigation in place through the use of NYMEX natural gas option-based strategies.

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Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets of the Company at fair value, and the change in fair value of the effective portion of these hedge instruments is recorded, net of income tax, in other comprehensive income or loss (OCI). Accumulated other comprehensive income or loss (AOCI) is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. Based on market prices at September 30, 2022, it is expected that an immaterial amount of unrealized gains will be reclassified into the Consolidated Statements of Income of the Company during the next twelve months. Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the Consolidated Statements of Cash Flows.

Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income
	Location of Gain (Loss)
	Recorded in Income	2022			2021			2020
Derivatives in Cash Flow Hedging Relationships
Effective portion of gain (loss) recognized in OCI on derivatives:
Interest rate swaps		$	56.7		$	61.2		$	(8.9	)
Effective portion of (loss) gain reclassified from AOCI to income:
Interest rate swaps	Interest Expense	$	(1.2	)	$	(1.3	)	$	(3.2	)
Derivatives Not Designated as Hedging Instruments*
Gain (Loss) recognized in income on derivatives:
Natural gas commodity contracts	Operating Expenses: Natural Gas	$	52.6		$	54.1		$	9.2
NYMEX / ICE natural gas contracts	Operating Expenses: Natural Gas		43.3			(77.5	)		(11.8	)
Total		$	95.9		$	(23.4	)	$	(2.6	)

* Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Missouri Utilities’ PGA clauses and initially recorded as regulatory assets or regulatory liabilities. These gains and losses are excluded from the table above because they have no direct impact on the statements of income. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

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Fair Value of Derivative Instruments in the Consolidated Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	63.6	Current Liabilities: Other	$	—
Subtotal			63.6			—
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		57.8	Current Liabilities: Other		30.7
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other		79.2	Current Liabilities – Other		71.5
	Deferred Charges and Other Assets: Other	12.7		Deferred Credits and Other Liabilities: Other		10.8
Natural gas commodity	Current Assets: Other		53.4	Current Liabilities – Other		55.1
	Deferred Charges and Other Assets: Other		3.1	Deferred Credits and Other Liabilities: Other		10.4
Subtotal			206.2			178.5
Total derivatives		$	269.8		$	178.5
September 30, 2021
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	12.6	Current Liabilities: Other	$	5.7
Subtotal			12.6			5.7
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		104.0	Current Liabilities: Other		0.3
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other	93.9		Current Liabilities – Other		50.1
	Deferred Charges and Other Assets: Other		20.8	Deferred Credits and Other Liabilities: Other		11.9
Natural gas commodity	Current Assets: Other		34.1	Current Liabilities – Other		82.5
	Deferred Charges and Other Assets: Other		1.1	Deferred Credits and Other Liabilities: Other		14.2
Subtotal			253.9			159.0
Total derivatives		$	266.5		$	164.7

* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of the Company’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

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Following is a reconciliation of the amounts in the tables above to the amounts presented in the Consolidated Balance Sheets:

	2022			2021
Fair value of derivative assets presented above	$	269.8		$	266.5
Fair value of cash margin receivable offset with derivatives		(36.6	)		(135.4	)
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	116.2		$	58.1
Derivative Instrument Assets, per Consolidated Balance Sheets:
Current Assets: Other	$	113.1		$	57.0
Deferred Charges and Other Assets: Other		3.1			1.1
Total	$	116.2		$	58.1
Fair value of derivative liabilities presented above	$	178.5		$	164.7
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	61.5		$	91.7
Derivative Instrument Liabilities, per Consolidated Balance Sheets:
Current Liabilities: Other	$	51.1		$	77.5
Deferred Credits and Other Liabilities: Other		10.4			14.2
Total	$	61.5		$	91.7

Additionally, at September 30, 2022 and 2021, the Company had $49.8 and $40.8, respectively, in cash margin receivables not offset with derivatives, which are presented in Accounts Receivable – Other.

Spire Missouri

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options, swaps and over-the-counter instruments for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. This policy strictly prohibits speculation and permits Spire Missouri to hedge current physical natural gas purchase commitments or forecasted or anticipated future peak (maximum) physical need for natural gas delivered. Costs and cost reductions, including carrying costs, associated with Spire Missouri’s use of natural gas derivative instruments are allowed to be passed on to Spire Missouri customers through the operation of its PGA clause, through which the MoPSC allows Spire Missouri to recover gas supply costs, subject to prudence review by the MoPSC. Accordingly, Spire Missouri does not expect any adverse earnings impact as a result of the use of these derivative instruments.

Spire Missouri does not designate these instruments as hedging instruments for financial reporting purposes because gains or losses associated with the use of these derivative instruments are deferred and recorded as regulatory assets or regulatory liabilities pursuant to ASC Topic 980, Regulated Operations, and, as a result, have no direct impact on the statements of income.

The timing of the operation of the PGA clause may cause interim variations in short-term cash flows, because Spire Missouri is subject to cash margin requirements associated with changes in the values of these instruments. Nevertheless, carrying costs associated with such requirements are recovered through the PGA clause.

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From time to time, Spire Missouri purchases NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. These contracts are designated as cash flow hedges of forecasted transactions pursuant to ASC Topic 815, Derivatives and Hedging. The gains or losses on these derivative instruments are not subject to Spire Missouri’s PGA clause. At September 30, 2022, Spire Missouri had no gasoline futures contracts outstanding.

Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets at fair value and the change in the fair value of the effective portion of these hedge instruments is recorded, net of income tax, in OCI. AOCI is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. As in both 2021 and 2020, there will be no reclassifications into the statements of income during fiscal 2023. Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the statements of cash flows.

Spire Missouri’s derivative instruments consist primarily of NYMEX positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX natural gas futures positions at September 30, 2022 and 2021 were as follows:

	September 30, 2022				September 30, 2021
	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		13.0		12		52.8		12

At September 30, 2022, Spire Missouri had also had 23.4 MMBtu of other price mitigation in place through the use of NYMEX natural gas option-based strategies.

Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Spire Missouri’s PGA clauses and initially recorded as regulatory assets or regulatory liabilities. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

Fair Value of Derivative Instruments in the Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	57.8	Current Liabilities: Other	$	30.7
September 30, 2021
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	104.0	Current Liabilities: Other	$	0.3

* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the Balance Sheets. As such, the gross balances presented in the table above are not indicative of Spire Missouri’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

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Following is a reconciliation of the amounts in the tables above to the amounts presented in Spire Missouri’s Balance Sheets:

	2022			2021
Fair value of derivative assets presented above	$	57.8		$	104.0
Fair value of cash margin (payable) receivable offset with derivatives		(27.1	)		(103.7	)
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—
Fair value of derivative liabilities presented above	$	30.7		$	0.3
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—

Additionally, at September 30, 2022 and 2021, Spire Missouri had $24.0 and $40.3, respectively, in cash margin receivables not offset with derivatives, which are presented in Accounts Receivable – Other.

Spire Alabama

Spire Alabama periodically employs a gasoline derivative program to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. The gains or losses on these derivative instruments are not subject to Spire Alabama’s GSA rider. There were no such contracts outstanding as of September 30, 2022 and 2021.

11. CONCENTRATIONS OF CREDIT RISK

Spire’s Gas Utility segment serves 1.7 million customers in three states across multiple rate classes resulting in a significant amount of revenue diversity. Credit risk is mitigated by the high percentage of residential customers as well as the geographic diversity of the Utilities, though customers for each of the Utilities are concentrated in a single state.

Spire Marketing’s accounts receivable attributable to utility companies and their marketing affiliates totaled $245.6 at September 30, 2022. The concentration of transactions with these counterparties has the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that customers in this group may be affected similarly by changes in economic, industry, or other conditions. Spire Marketing also has concentrations of credit risk with certain individually significant counterparties. At September 30, 2022, the amounts included in accounts receivable from its five largest counterparties (in terms of net accounts receivable exposure) totaled $111.2. Four of these five counterparties are investment-grade rated integrated utilities, while the fifth is rated slightly below investment-grade, but with a stable outlook.

To manage these risks, Spire Marketing has established procedures to determine the creditworthiness of its counterparties. These procedures include obtaining credit ratings and credit reports, analyzing counterparty financial statements to assess financial condition, and considering the industry environment in which the counterparty operates. This information is monitored on an ongoing basis. In some instances, Spire Marketing may require credit assurances such as prepayments, letters of credit, or parental guaranties. In addition, Spire Marketing may enter into netting arrangements to mitigate credit risk with counterparties in the energy industry with whom it conducts both sales and purchases of natural gas. Where there is no netting arrangement, Spire Marketing records accounts receivable, accounts payable, and prepayments for physical sales and purchases of natural gas on a gross basis. Sales are typically made on an unsecured credit basis with payment due the month following delivery. Accounts receivable amounts are closely monitored and provisions for uncollectible amounts are accrued when losses are probable.

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12. INCOME TAXES

The Company, Spire Missouri, and Spire Alabama are subject to federal income tax as well as income tax in various state and local jurisdictions. Spire files a consolidated federal income tax return and various state income tax returns and allocates income taxes to Spire Missouri, Spire Alabama and its other subsidiaries as if each entity were a separate taxpayer.

The provision for income taxes during the fiscal years ended September 30, 2022, 2021, and 2020 was as follows:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022		2021		2020
Federal:
Current	$	0.5		$	0.2		$	0.4		$	—		$	—		$	—		$	—	$	—	$	—
Deferred		47.0			49.5			5.8			18.2			22.0			14.9			18.1		19.8		17.4
Investment tax credits		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		—		—		—
State and local:
Current		0.5			1.3			3.0			—			—			0.1			—		—		—
Deferred		11.1			17.7			3.4			3.3			3.5			2.5			5.1		5.2		4.6
Total income tax expense	$	58.9		$	68.5		$	12.4		$	21.3		$	25.3		$	17.3		$	23.2	$	25.0	$	22.0

The effective income tax rate varied from the federal statutory income tax rate for each year due to the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Federal income tax statutory rate		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%
State and local income taxes, net of federal income tax benefits		3.6			3.6			9.0			2.6			2.6			2.6			4.1			4.1			4.1
Certain expenses capitalized on books and deducted on tax return		(1.6	)		(1.6	)		(6.6	)		(3.2	)		(3.3	)		(4.6	)		—			—			—
Taxes related to prior years		(0.3	)		(0.5	)		(1.8	)		(0.6	)		(0.2	)		(1.4	)		—			—			0.1
Amortization of excess deferred taxes		(3.5	)		(2.5	)		(8.3	)		(7.3	)		(5.0	)		(5.7	)		—			—			—
Other items – net *		1.9			0.1			(1.0	)		3.1			(0.2	)		(0.2	)		0.2			0.2			(0.1	)
Effective income tax rate		21.1	%		20.1	%		12.3	%		15.6	%		14.9	%		11.7	%		25.3	%		25.3	%		25.1	%

* Other consists primarily of property adjustments.

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The significant items comprising the net deferred tax liability or asset as of September 30 were as follows:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Deferred tax assets:
Reserves not currently deductible	$	33.5		$	18.3		$	4.0		$	8.5		$	7.4		$	6.6
Pension and other postretirement benefits		72.6			77.4			52.6			53.4			—			—
Goodwill		—			—			—			—			73.0			87.2
Operating losses		255.1			264.5			116.9			110.3			140.3			130.3
Regulatory amount due to customers, net		34.5			33.2			30.7			29.4			—			—
Other		24.9			32.4			—			—			—			—
Deferred tax assets		420.6			425.8			204.2			201.6			220.7			224.1
Less: Valuation allowance		—			(0.5	)		—			(0.4	)		—			—
Total deferred tax assets		420.6			425.3			204.2			201.2			220.7			224.1
Deferred tax liabilities:
Relating to property		(740.0	)		(693.9	)		(489.3	)		(464.0	)		(201.6	)		(182.7	)
Regulatory pension and other postretirement benefits		(92.8	)		(95.6	)		(72.3	)		(71.2	)		(1.6	)		(1.6	)
Deferred gas costs		(75.8	)		(81.1	)		(74.0	)		(79.5	)		—			—
Other**		(187.1	)		(167.0	)		(68.7	)		(66.5	)		(6.5	)		(5.6	)
Total deferred tax liabilities		(1,095.7	)		(1,037.6	)		(704.3	)		(681.2	)		(209.7	)		(189.9	)
Net deferred tax (liability) asset	$	(675.1	)	$	(612.3	)	$	(500.1	)	$	(480.0	)	$	11.0		$	34.2

** For Spire, Other consists primarily of goodwill-related liabilities.

As indicated in Note 1, Summary of Significant Accounting Policies, the Company’s regulated operations accounting for income taxes is impacted by ASC Topic 980, Regulated Operations. The Tax Cuts and Jobs Act of 2017 (TCJA) reduced the corporate federal income tax rate, and the corresponding reductions in deferred income tax balances resulted in amounts previously collected from utility customers for these deferred taxes becoming refundable to such customers, generally through reductions in future rates. The TCJA includes provisions that stipulate how these excess deferred taxes are to be passed back to customers for certain accelerated tax depreciation benefits. In fiscal 2018, the MoPSC Amended Report and Order took effect and the estimated excess accumulated deferred income tax began to be returned to Spire Missouri customers in rates. During the current fiscal year, the amount of excess accumulated deferred income taxes was trued up as part of the rate proceeding. The amount being returned related to the TCJA has been updated and in addition the excess accumulated deferred income taxes related to the Missouri tax rate change has begun to be returned. Excess accumulated deferred taxes of $9.9 were returned in fiscal 2022 and $8.4 were returned by Spire Missouri during each of fiscal years 2021, and 2020. The treatment for accumulated deferred income tax balances for Spire Alabama, Spire Gulf and Spire Mississippi is yet to be determined by state regulators; however, discussions have begun with respect to these balances.

In assessing whether deferred tax assets are realizable, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. Management considers all significant available positive and negative evidence, including the existence of losses in recent years, the timing of deferred tax liability reversals, projected future taxable income, taxable income in carryback years, and tax planning strategies to assess the need for a valuation allowance. Based upon this evidence, management believes it is more likely than not the Company, Spire Missouri and Spire Alabama will realize the benefits of these deferred tax assets.

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As of September 30, 2022, Spire, and on a separate company basis, Spire Missouri and Spire Alabama, had federal and state loss carryforwards, contribution carryforwards, and various tax credit carryforwards as shown below.

	Spire		Spire Missouri		Spire Alabama
Federal and state loss carryforwards	$	1,047.7	$	462.3	$	556.7
Contribution carryforwards		10.4		7.0		0.4
Tax credit carryforwards		4.6		3.4		—

For federal tax purposes, Spire Missouri’s and Spire Alabama’s loss carryforwards may be utilized against income from another member of the consolidated group. The loss carryforwards begin to expire in fiscal 2030 for certain state purposes and fiscal 2035 for federal and other state purposes. Contribution carryforwards and tax credit carryforwards are expected to be utilized prior to their expiration.

The Company, Spire Missouri and Spire Alabama recognize the tax benefit from a tax position only if it is at least more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. Unrecognized tax benefits are reported as a reduction of a deferred tax asset for an operating loss carryforward to the extent the recognition of the benefit would impact the operating loss carryforward, pursuant to ASU 2013-11. The following table presents a reconciliation of the beginning and ending balances of unrecognized tax benefits:

	Spire								Spire Missouri
	2022			2021		2020			2022		2021		2020
Unrecognized tax benefits, beginning of year	$	16.4		$	13.2	$	10.7		$	16.1	$	13.0	$	10.4
Increases related to tax positions taken in current year		3.3			3.2		2.6			3.2		3.1		2.6
Reductions due to lapse of applicable statute of limitations		(0.1	)		—		(0.1	)		—		—		—
Unrecognized tax benefits, end of year	$	19.6		$	16.4	$	13.2		$	19.3	$	16.1	$	13.0

As of September 30, 2022 and 2021, the amounts of unrecognized tax benefits which, if recognized, would affect the effective tax rate were $4.0 and $3.6, respectively, for the Company and $3.7 and $3.3, respectively, for Spire Missouri. It is reasonably possible that events will occur in the next 12 months that could increase or decrease the amount of the unrecognized tax benefits. The Company and Spire Missouri do not expect that any such change will be significant to the balance sheets. Spire Alabama reported no unrecognized tax benefits for fiscal years 2022, 2021, and 2020.

The Company, Spire Missouri, and Spire Alabama record potential interest and penalties related to uncertain tax positions as interest expense and other income deductions, respectively. As of September 30, 2022 and 2021, interest accrued associated with uncertain tax positions was de minimis, and no penalties were accrued.

The Company, Spire Missouri, and Spire Alabama are no longer subject to examination for fiscal years prior to 2019, except to the extent the net operating losses from prior years are reviewed.

13. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

The pension plans of Spire consist of plans for employees at Spire Missouri, the employees of Spire Alabama and employees of the subsidiaries of Spire EnergySouth.

Spire Missouri and Spire Alabama have non-contributory, defined benefit, trusteed forms of pension plans covering the majority of their employees. Plan assets consist primarily of corporate and U.S. government obligations and a growth segment consisting of exposure to equity markets, commodities, real estate and international credit markets.

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The net periodic pension cost includes components shown in the following table. 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.”

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	20.0		$	21.7		$	22.5		$	14.4		$	15.4		$	15.7		$	4.8		$	5.5		$	6.1
Interest cost on projected benefit obligation		21.5			20.7			22.6			14.7			14.2			15.8			4.7			4.6			4.9
Expected return on plan assets		(31.3	)		(31.6	)		(35.0	)		(22.7	)		(22.5	)		(24.6	)		(5.2	)		(5.8	)		(6.9	)
Amortization of prior service (credit) cost		(4.5	)		(3.1	)		(2.5	)		(1.9	)		(0.6	)		0.1			(2.4	)		(2.3	)		(2.4	)
Amortization of actuarial loss		11.9			14.9			14.4			9.6			11.0			11.3			2.4			3.9			3.1
Loss on lump-sum settlements and curtailments		33.6			18.2			31.6			27.3			11.6			26.6			6.3			6.6			5.0
Subtotal		51.2			40.8			53.6			41.4			29.1			44.9			10.6			12.5			9.8
Regulatory adjustment		12.5			20.6			6.6			9.9			19.0			3.9			1.7			0.7			1.8
Net pension cost	$	63.7		$	61.4		$	60.2		$	51.3		$	48.1		$	48.8		$	12.3		$	13.2		$	11.6

Other changes in plan assets and pension benefit obligations recognized in other comprehensive income or loss include the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial (gain) loss	$	(16.9	)	$	(8.1	)	$	68.0		$	0.9		$	(0.9	)	$	37.8		$	(16.0	)	$	(1.5	)	$	24.4
Amortization of actuarial loss		(11.9	)		(14.9	)		(14.4	)		(9.6	)		(11.0	)		(11.3	)		(2.4	)		(3.9	)		(3.1	)
Acceleration of loss recognized due to settlement		(33.6	)		(18.2	)		(31.7	)		(27.3	)		(11.6	)		(26.6	)		(6.3	)		(6.6	)		(5.1	)
Current year service credit		—			(17.9	)		(4.4	)		—			(17.9	)		(4.4	)		—			—			—
Amortization of prior service credit (cost)		4.5			3.1			2.5			1.9			0.6			(0.1	)		2.4			2.3			2.4
Subtotal		(57.9	)		(56.0	)		20.0			(34.1	)		(40.8	)		(4.6	)		(22.3	)		(9.7	)		18.6
Regulatory adjustment		56.3			57.3			(19.5	)		32.5			42.1			5.1			22.3			9.7			(18.6	)
Total recognized in OCI	$	(1.6	)	$	1.3		$	0.5		$	(1.6	)	$	1.3		$	0.5		$	—		$	—		$	—

Spire pension obligations are driven by separate plan and regulatory provisions governing Spire Missouri, Spire Alabama and Spire EnergySouth pension plans.

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.

In the fiscal year ended September 30, 2022, two Spire Missouri plans and two Spire Alabama plans met the criteria for settlement recognition, requiring re-measurement of the obligation under those plans using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rates for the Missouri plans were updated to 5.7% and 5.8%, respectfully, for each plan at September 30, 2022 (from 3.0%, respectfully, at September 30, 2021), and the discount rate for the Alabama plans were updated to 5.70% and 5.65%, respectfully, (from 3.1% and 3.0%, respectfully). Lump-sum payments recognized as settlements during fiscal year 2022 was $109.3 ($87.0 attributable to Spire Missouri and $22.3 to Spire Alabama). The Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan, and in fiscal 2022 the amortization periods range from 11.4 years to 12.3 years. Therefore, no lump sum settlement expenses were recorded in the fiscal year ended September 30, 2022.

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In the fiscal year ended September 30, 2021, two Spire Missouri plans and one Spire Alabama plan met the criteria for settlement recognition, requiring re-measurement of the obligation under those plans using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rates for the Missouri plans were updated to 3.00% at September 30, 2021 (from 2.85% at September 30, 2020), and the discount rate for the Alabama plan was updated to 3.10% (from 2.95%). Lump-sum payments recognized as settlements during fiscal year 2021 was $67.5 ($44.6 attributable to Spire Missouri and $22.9 to Spire Alabama). The Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan, and in fiscal 2021 the amortization periods range from 11.4 years to 11.7 years. Therefore, no lump sum settlement expenses were recorded in the fiscal year ended September 30, 2021.

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. 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.

The following table shows the reconciliation of the beginning and ending balances of the pension benefit obligation at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	689.6		$	732.6		$	479.0		$	505.2		$	149.4		$	163.5
Service cost		20.0			21.7			14.4			15.4			4.8			5.5
Interest cost	21.5				20.7			14.7			14.2			4.7			4.6
Actuarial (gain) loss		(173.9	)		6.6			(116.2	)		11.0			(42.4	)		(1.8	)
Plan amendments		—			(17.9	)		—			(17.9	)		—			—
Settlement loss		33.4			12.3			27.9			8.2			5.6			4.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.9	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Benefit obligation, end of year	$	464.4		$	689.6		$	320.6		$	479.0		$	97.8		$	149.4
Accumulated benefit obligation, end of year	$	457.1		$	673.3		$	315.0		$	465.4		$	96.2		$	146.9

In 2022, all qualified plans experienced significant actuarial gains. These gains were driven by the discount rates increasing between 2.55% and 2.80% compared to the prior fiscal year, combined with lump sum rates that increased significantly since the prior fiscal year, which decreased the liability and contributed to liability gains. These gains were only partly offset by the losses on actual lump sum benefit payments compared to assumed amounts across all the plans. Actuarial losses 2021 were primarily due to the decrease in lump sum discount rates in one Spire Missouri plan and the losses on actual lump sum benefit payments compared to assumed amounts across all the plans. Except for Spire Alabama in 2021, these losses more than offset the gains that resulted from the increase in discount rates used to calculate the benefit obligations for each year.

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The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets, beginning of year	$	498.9		$	473.1		$	364.0		$	336.2		$	82.8		$	88.6
Actual return on plan assets		(92.5	)		58.8			(66.7	)		42.7			(15.6	)		9.6
Employer contributions		52.4			53.4			37.8			42.2			14.4			11.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.8	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Fair value of plan assets, end of year	$	332.7		$	498.9		$	235.9		$	364.0		$	57.3		$	82.8
Funded status of plans, end of year	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

The following table sets forth the amounts recognized in the balance sheets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Current liabilities	$	(1.1	)	$	(0.8	)	$	(1.1	)	$	(0.8	)	$	—		$	—
Noncurrent liabilities		(130.6	)		(189.9	)		(83.6	)		(114.2	)		(40.5	)		(66.6	)
Total	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

Pre-tax amounts recognized in accumulated other comprehensive loss not yet recognized as components of net periodic pension cost consist of:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial loss	$	132.0		$	194.6		$	93.6		$	129.6		$	41.2		$	66.1
Prior service credit		(35.7	)		(40.3	)		(18.1	)		(20.1	)		(16.3	)		(18.7	)
Subtotal		96.3			154.3			75.5			109.5			24.9			47.4
Adjustments for amounts included in regulatory assets		(93.1	)		(149.5	)		(72.3	)		(104.7	)		(24.9	)		(47.4	)
Total	$	3.2		$	4.8		$	3.2		$	4.8		$	—		$	—

The assumptions used to calculate net periodic pension costs for Spire Missouri are as follows:

	2022		2021		2020
Weighted average discount rate - Spire Missouri East plan		3.00%		2.85%		3.20%
Weighted average discount rate - Spire Missouri West plan		3.00%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

The assumptions used to calculate net periodic pension costs for Spire Alabama are as follows:

	2022		2021		2020
Weighted average discount rate		3.10%/3.0%		2.95%/2.80%		3.25%/3.20%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

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The assumptions used to calculate the benefit obligations are as follows:

	2022		2021
Weighted average discount rate - Spire Missouri East plan		5.70%		3.00%
Weighted average discount rate - Spire Missouri West plan		5.80%		3.00%
Weighted average discount rate - Spire Alabama plans		5.70%/5.65%		3.1%/3.0%
Weighted average rate of future compensation increase		3.00%		3.00%
Cash balance interest crediting rate - Spire Alabama / Spire Missouri		4.25%		4.25%

The following table sets forth the year-end projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for plans that have a projected benefit obligation and an accumulated benefit obligation in excess of plan assets:

	Spire				Spire Missouri				Spire Alabama
	2022		2021		2022		2021		2022		2021
Projected benefit obligation	$	464.4	$	689.6	$	320.6	$	479.0	$	97.8	$	149.4
Accumulated benefit obligation		457.1		673.3		315.0		465.4		96.2		146.9
Fair value of plan assets		332.7		498.9		235.9		364.0		57.3		82.8

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		74.3	%		70.0	%		74.5	%
Liability hedging assets		30.0	%		22.8	%		30.0	%		23.1	%
Cash and cash equivalents		—	%		2.9	%		—	%		2.4	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Spire Alabama	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		68.7	%		70.0	%		72.8	%
Liability hedging assets		30.0	%		25.3	%		30.0	%		25.5	%
Cash and cash equivalents		—	%		6.0	%		—	%		1.7	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

The Spire Inc. Retirement Plans Committee is responsible for the administration of the various plans, and all payments under the plans require direction of that committee. The Spire Inc. Defined Benefit Plan Investment Review Committee utilizes an Outsourced Chief Investment Officer (OCIO) model where investment decisions are outsourced to investment consultants (Willis Towers Watson), who in turn become co-fiduciaries with the committee.

For all plans, the Company employs a total return investment approach whereby a mix of equities and fixed income investments are used to maximize the long-term return of plan assets with a prudent level of risk. Risk tolerance is established through consideration of plan liabilities, plan funded status, corporate financial condition and market conditions. The Company has developed an investment strategy that focuses on asset allocation, diversification and quality guidelines. The investment goals are to obtain an adequate level of return to meet future obligations of the plan by providing above average risk-adjusted returns with a risk exposure in the mid-range of comparable funds. Comparative market and peer group benchmarks are utilized to ensure that investment managers are performing satisfactorily. The Company seeks to maintain an appropriate level of diversification to minimize the risk of large losses in a single asset class. Accordingly, plan assets for the pension plans do not have a concentration of assets in a single entity, industry, country, commodity or class of investment fund.

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The following table sets forth expected pension benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter, for Spire, Spire Missouri, and Spire Alabama:

	2023		2024		2025		2026		2027			2028- 2032
Spire	$	55.8	$	52.3	$	47.2	$	44.0	$	43.5	$	202.9
Spire Missouri		41.4		38.9		33.9		30.8		29.6		137.5
Spire Alabama		11.3		10.2		9.9		9.7		10.4		46.4

The funding policy of Spire Missouri and Spire Alabama 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. Spire Missouri’s contributions to the pension plans in fiscal 2023 are anticipated to be $44.5 into the qualified trusts, and $1.1 into the non-qualified plans. Spire Alabama’s contributions to the pension plans in fiscal 2022 are anticipated to be $13.8 into the qualified trusts.

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, the Missouri West 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.

Net periodic postretirement benefit costs consist of the following components:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	7.5		$	7.3		$	5.9		$	6.3		$	6.2		$	5.3		$	1.1		$	0.9		$	0.4
Interest cost on accumulated postretirement benefit obligation		6.0			6.0			6.3			4.5			4.5			4.7			1.4			1.3			1.4
Expected return on plan assets		(16.8	)		(16.1	)		(16.7	)		(11.3	)		(10.9	)		(11.4	)		(5.2	)		(4.9	)		(5.0	)
Amortization of prior service cost (credit)		1.0			1.0			(0.5	)		0.7			0.7			(0.2	)		0.3			0.3			(0.3	)
Amortization of actuarial gain		(2.2	)		(1.6	)		(2.0	)		(1.9	)		(1.5	)		(2.0	)		—			—			—
Subtotal		(4.5	)		(3.4	)		(7.0	)		(1.7	)		(1.0	)		(3.6	)		(2.4	)		(2.4	)		(3.5	)
Regulatory adjustment		3.3			13.2			16.0			5.0			15.0			17.7			(1.8	)		(1.8	)		(1.8	)
Net postretirement benefit (income) cost	$	(1.2	)	$	9.8		$	9.0		$	3.3		$	14.0		$	14.1		$	(4.2	)	$	(4.2	)	$	(5.3	)

Other changes in plan assets and postretirement benefit obligations recognized in OCI include the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial loss (gain)	$	15.8		$	(41.0	)	$	(7.3	)	$	9.8		$	(29.0	)	$	(7.6	)	$	5.9		$	(9.9	)	$	1.1
Amortization of actuarial gain		2.2			1.6			2.0			1.9			1.5			2.0			—			—			—
Current year prior service (cost) credit		(6.3	)		—			15.8			(1.1	)		—			9.5			(5.2	)		—			6.3
Amortization of prior service (cost) credit		(1.0	)		(1.0	)		0.5			(0.7	)		(0.7	)		0.2			(0.3	)		(0.3	)		0.3
Subtotal		10.7			(40.4	)		11.0			9.9			(28.2	)		4.1			0.4			(10.2	)		7.7
Regulatory adjustment		(10.7	)		40.4			(11.0	)		(9.9	)		28.2			(4.1	)		(0.4	)		10.2			(7.7	)
Total recognized in OCI	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—

Pursuant to a MoPSC Order, the return on plan assets is based on the market-related value of plan assets implemented prospectively over a four-year period. Gains and losses not yet includible in postretirement benefit cost are amortized only to the extent that such gain or loss exceeds 10% of the greater of the accumulated postretirement benefit obligation or the market-related value of plan assets. Such excess is amortized over the average remaining service life of active participants. Effective April 18, 2018, the recovery in rates for Spire Missouri’s postretirement benefit plans is based on an annual allowance of $8.6. The difference between these amounts and postretirement benefit cost based on 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.

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The following table sets forth the reconciliation of the beginning and ending balances of the postretirement benefit obligation at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	204.2		$	212.3		$	151.7		$	158.4		$	48.0		$	48.3
Service cost		7.5			7.3			6.3			6.2			1.1			0.9
Interest cost		6.0			6.0			4.5			4.5			1.4			1.3
Actuarial (gain) loss		(52.6	)		(7.5	)		(37.7	)		(6.7	)		(13.6	)		0.7
Plan amendments		(6.2	)		—			(1.0	)		—			(5.2	)		—
Retiree drug subsidy program		0.2			—			0.2			—			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Benefit obligation, end of year	$	148.1		$	204.2		$	114.8		$	151.7		$	29.9		$	48.0

In fiscal 2022, the actuarial gains for all qualified Spire plans were driven by the increase in the discount rate used to calculate the benefit obligation. In fiscal 2021, the actuarial gains for Spire and Spire Missouri were driven by the increase in the discount rate used to calculate the benefit obligation. For Spire Alabama, this gain was more than offset by the loss associated with an update to the trend assumption.

The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets at beginning of year	$	326.9		$	291.0		$	221.7		$	199.2		$	99.4		$	87.0
Actual return on plan assets		(51.6	)		49.7			(36.2	)		33.1			(14.3	)		15.6
Employer contributions		0.4			0.1			0.4			0.1			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Fair value of plan assets, end of year	$	264.7		$	326.9		$	176.7		$	221.7		$	83.3		$	99.4
Funded status of plans, end of year	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4		$	51.4

The following table sets forth the amounts recognized in the balance sheets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022		2021
Noncurrent assets	$	151.6		$	170.2		$	96.9		$	117.5		$	53.4	$	51.4
Current liabilities		(0.3	)		(0.5	)		(0.3	)		(0.5	)		—		—
Noncurrent liabilities		(34.7	)		(47.0	)		(34.7	)		(47.0	)		—		—
Total	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4	$	51.4

Pre-tax amounts recognized in accumulated other comprehensive loss not yet recognized as components of net periodic postretirement benefit cost consist of:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial gain	$	(83.3	)	$	(101.2	)	$	(74.2	)	$	(85.8	)	$	(5.6	)	$	(11.5	)
Prior service cost (credit)		7.1			14.6			7.9			9.7			(0.8	)		4.9
Subtotal		(76.2	)		(86.6	)		(66.3	)		(76.1	)		(6.4	)		(6.6	)
Adjustments for amounts included in regulatory assets		76.2			86.6			66.3			76.1			6.4			6.6
Total	$	—		$	—		$	—		$	—		$	—		$	—

108

 

The assumptions used to calculate net periodic postretirement benefit costs for Spire Missouri are as follows:

	2022		2021		2020
Weighted average discount rate - Spire Missouri plans		2.95%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets - Spire Missouri plans		5.75%		5.75%		6.25%

The assumptions used to calculate net periodic postretirement benefit costs for Spire Alabama are as follows:

	2022		2021		2020
Weighted average discount rate		2.95%		2.75%		3.15%
Expected long-term rate of return on plan assets	5.00%/6.25%		5.00%/6.25%		5.00%/6.25%

The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

The assumptions used to calculate the accumulated postretirement benefit obligations are as follows:

	2022		2021
Weighted average discount rate - Spire Alabama plans		5.80%		2.95%
Weighted average discount rate - Spire Missouri plans		5.80%		2.95%
Weighted average rate of future compensation increase - Spire Missouri East plans		3.00%		3.00%

The assumed medical cost trend rates at September 30 are as follows:

	2022		2021
Medical cost trend assumed for next year - Spire Missouri		6.75%		7.00%
Medical cost trend assumed for next year - Spire Alabama		6.75%		7.00%
Rate to which the medical cost trend rate is assumed to decline (the ultimate medical cost trend rate)		5.00%		5.00%
Year the rate reaches the ultimate trend		2028		2028

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri	Target			2022 Actual			2021 Actual
Equity securities		60.0	%		58.7	%		59.2	%
Debt securities		40.0	%		40.5	%		38.9	%
Cash and cash equivalents		—	%		0.8	%		1.9	%
Total		100.0	%		100.0	%		100.0	%

Spire Alabama	Target			2022 Actual			2021 Actual
Equity securities		60.5	%		57.7	%		60.5	%
Debt securities		39.5	%		42.3	%		39.5	%
Total		100.0	%		100.0	%		100.0	%

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 and Rabbi Trusts as external funding mechanisms. Their investment policies seek to maximize investment returns consistent with their tolerance for risk. Outside investment management specialists are utilized in each asset class. Such specialists are provided with guidelines, where appropriate, designed to ensure that the investment portfolio is managed in accordance with policy. Performance and compliance with the guidelines is regularly monitored. Spire Missouri and Spire Alabama currently invest in mutual funds which are rebalanced periodically to the target allocation. The mutual funds are diversified across U.S. stock and bond markets, and for Spire Alabama, international stock markets.

109

 

The following table sets forth expected postretirement benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter for Spire, Spire Missouri, and Spire Alabama:

	2023		2024		2025		2026		2027			2028 - 2032
Spire	$	13.7	$	14.4	$	14.6	$	14.5	$	14.7	$	69.5
Spire Missouri		11.6		12.2		12.3		12.2		12.2		55.7
Spire Alabama		1.9		2.0		2.1		2.1		2.2		11.9

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. For both Spire Missouri and Spire Alabama there are no anticipated contributions to the postretirement plans in fiscal 2023.

Other Plans

Spire Services Inc. sponsors a 401(k) plan that cover substantially all employees of Spire Inc. and its subsidiaries. The plan allows employees to contribute a portion of their base pay in accordance with specific guidelines. The cost of the defined contribution plan for Spire Inc. totaled $15.5, $15.5, and $13.6 for fiscal years 2022, 2021, and 2020, respectively. Spire Missouri provides a match of such contributions within specific limits. The cost of the defined contribution plan for Spire Missouri amounted to $10.9, $10.9, and $9.5 for fiscal years 2022, 2021, and 2020, respectively. Spire Alabama also provides a match of employee contributions within specific limits. The cost of the defined contribution plan for Spire Alabama amounted to $3.6, $2.9, and $3.4 for fiscal years 2022, 2021, and 2020, respectively.

Fair Value Measurements of Pension and Other Postretirement Plan Assets

Spire

The table below categorizes the fair value measurements of the Spire pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	11.5	$	—	$	—	$	11.5
Equity funds - global (including U.S.)		—		122.2		—		122.2
Real asset funds		—		61.0		—		61.0
Debt securities:
U.S. bond funds		42.3		—		—		42.3
U.S. government index funds		36.1		—		—		36.1
Global funds (including U.S.)		—		59.6		—		59.6
Total	$	89.9	$	242.8	$	—	$	332.7
As of September 30, 2021
Cash and cash equivalents	$	10.6	$	—	$	—	$	10.6
Equity funds - global (including U.S.)		—		201.2		—		201.2
Real asset funds		—		87.7		—		87.7
Debt securities:
U.S. bond funds		58.4		—		—		58.4
U.S. government index funds		60.1		—		—		60.1
Global funds (including U.S.)		—		80.9		—		80.9
Total	$	129.1	$	369.8	$	—	$	498.9

110

 

The table below categorizes the fair value measurements of Spire’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
U.S. stock/bond mutual funds		177.1		69.4		—		246.5
International fund		0.8		13.9		—		14.7
Total	$	181.4	$	83.3	$	—	$	264.7
As of September 30, 2021
Cash and cash equivalents	$	3.1	$	—	$	—	$	3.1
U.S. stock/bond mutual funds		223.2		82.5		—		305.7
International fund		1.2		16.9		—		18.1
Total	$	227.5	$	99.4	$	—	$	326.9

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

Spire Missouri

The table below categorizes the fair value measurements of Spire Missouri’s pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	5.7	$	—	$	—	$	5.7
Equity funds - global (including U.S.)		—		85.7		—		85.7
Real asset funds		—		47.2		—		47.2
Debt securities:
U.S. bond funds		29.4		—		—		29.4
U.S. government index funds		24.6		—		—		24.6
Global funds (including U.S.)		—		43.3		—		43.3
Total	$	59.7	$	176.2	$	—	$	235.9
As of September 30, 2021
Cash and cash equivalents	$	8.3	$	—	$	—	$	8.3
Equity funds - global (including U.S.)		—		148.6		—		148.6
Real asset funds		—		59.2		—		59.2
Debt securities:
U.S. bond funds		38.4		—		—		38.4
U.S. government index funds		45.6		—		—		45.6
Global funds (including U.S.)		—		63.9		—		63.9
Total	$	92.3	$	271.7	$	—	$	364.0

111

 

The table below categorizes the fair value measurements of Spire Missouri’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	2.7	$	—	$	—	$	2.7
U.S. stock/bond mutual funds		174.0		—		—		174.0
Total	$	176.7	$	—	$	—	$	176.7
As of September 30, 2021
Cash and cash equivalents	$	2.4	$	—	$	—	$	2.4
U.S. stock/bond mutual funds		219.3		—		—		219.3
Total	$	221.7	$	—	$	—	$	221.7

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

Spire Alabama

The table below categorizes the fair value measurements of Spire Alabama’s pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
Equity funds - global (including U.S.)		—		21.6		—		21.6
Real asset funds		—		8.1		—		8.1
Debt securities:
U.S. bond funds		7.7		—		—		7.7
U.S. government index funds		6.8		—		—		6.8
Global funds (including U.S.)		—		9.6		—		9.6
Total	$	18.0	$	39.3	$	—	$	57.3
As of September 30, 2021
Cash and cash equivalents	$	1.4	$	—	$	—	$	1.4
Equity funds - global (including U.S.)		—		32.3		—		32.3
Real asset funds		—		14.6		—		14.6
Debt securities:
U.S. bond funds		12.3		—		—		12.3
U.S. government index funds		8.9		—		—		8.9
Global funds (including U.S.)		—		13.3		—		13.3
Total	$	22.6	$	60.2	$	—	$	82.8

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The table below categorizes the fair value measurements of Spire Alabama’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
U.S. stock/bond mutual funds	$	—	$	69.4	$	—	$	69.4
International fund		—		13.9		—		13.9
Total	$	—	$	83.3	$	—	$	83.3
As of September 30, 2021
U.S. stock/bond mutual funds	$	—	$	82.5	$	—	$	82.5
International fund		—		16.9		—		16.9
Total	$	—	$	99.4	$	—	$	99.4

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

14. INFORMATION BY OPERATING SEGMENT

The Company has two reportable segments: Gas Utility and Gas Marketing. 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. Other components of the Company’s consolidated information include:

•  Spire STL Pipeline, a subsidiary of Spire providing interstate natural gas pipeline transportation services;

•  Spire Storage, a subsidiary of Spire providing interstate natural gas storage services;

•  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 and Spire Alabama, sales of natural gas from Spire Missouri to Spire Marketing, sales of natural gas from Spire Alabama to Spire Marketing, propane transportation services provided by Spire NGL Inc. to Spire Missouri, and propane storage services provided by Spire Missouri to Spire NGL Inc.

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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 other non-recurring or unusual items such as certain regulatory, legislative or GAAP standard-setting actions.

	Gas		Gas
2022	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,945.6	$	234.9	$	18.0		$	—		$	2,198.5
Intersegment revenues		0.5		—		51.2			(51.7	)		—
Total Operating Revenues		1,946.1		234.9		69.2			(51.7	)		2,198.5
Operating Expenses
Natural gas		788.8		171.4		—			(36.3	)		923.9
Other operation and maintenance		413.3		14.6		37.1			(15.4	)		449.6
Depreciation and amortization		227.9		1.4		8.0			—			237.3
Taxes, other than income taxes		176.2		0.6		2.7			—			179.5
Total Operating Expenses		1,606.2		188.0		47.8			(51.7	)		1,790.3
Operating Income	$	339.9	$	46.9	$	21.4		$	—		$	408.2
Net Economic Earnings (Loss)	$	202.7	$	27.0	$	(13.4	)	$	—		$	216.3
Capital Expenditures	$	528.6	$	0.9	$	22.7		$	—		$	552.2

	Gas		Gas
2021	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	2,118.2	$	96.5	$	20.8		$	—		$	2,235.5
Intersegment revenues		1.1		—		46.9			(48.0	)		—
Total Operating Revenues		2,119.3		96.5		67.7			(48.0	)		2,235.5
Operating Expenses
Natural gas		961.7		18.8		0.1			(34.3	)		946.3
Other operation and maintenance		422.2		17.1		40.2			(13.7	)		465.8
Depreciation and amortization		204.4		1.2		7.5			—			213.1
Taxes, other than income taxes		157.0		0.9		2.2			—			160.1
Impairments		—		—		—			—			—
Total Operating Expenses		1,745.3		38.0		50.0			(48.0	)		1,785.3
Operating Income	$	374.0	$	58.5	$	17.7		$	—		$	450.2
Net Economic Earnings (Loss)	$	230.6	$	47.0	$	(11.3	)	$	—		$	266.3
Capital Expenditures	$	590.4	$	0.7	$	33.7		$	—		$	624.8

	Gas		Gas
2020	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,751.8	$	87.9	$	15.7		$	—		$	1,855.4
Intersegment revenues		0.2		—		42.1			(42.3	)		—
Total Operating Revenues		1,752.0		87.9		57.8			(42.3	)		1,855.4
Operating Expenses
Natural gas		660.2		65.1		0.4			(29.6	)		696.1
Other operation and maintenance		421.3		11.8		38.2			(12.7	)		458.6
Depreciation and amortization		189.7		0.6		7.0			—			197.3
Taxes, other than income taxes		146.5		1.1		0.8			—			148.4
Impairments		—		—		148.6			—			148.6
Total Operating Expenses		1,417.7		78.6		195.0			(42.3	)		1,649.0
Operating Income (Loss)	$	334.3	$	9.3	$	(137.2	)	$	—		$	206.4
Net Economic Earnings (Loss)	$	213.4	$	9.1	$	(14.7	)	$	—		$	207.8
Capital Expenditures	$	547.8	$	3.6	$	87.0		$	—		$	638.4

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Total Assets at End of Year	2022			2021			2020
Gas Utility	$	8,042.8		$	7,615.4		$	6,716.2
Gas Marketing		638.7			466.1			182.7
Other		2,895.2			2,351.7			2,443.5
Eliminations		(1,493.0	)		(1,076.8	)		(1,101.2	)
Total Assets	$	10,083.7		$	9,356.4		$	8,241.2

Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings	2022			2021			2020
Net Income	$	220.8		$	271.7		$	88.6
Adjustments, pre-tax:
Impairments		—			—			148.6
Missouri regulatory adjustments		—			(9.0	)		—
Fair value and timing adjustments		(11.4	)		3.3			2.5
Acquisition, divestiture and restructuring activities		—			(1.3	)		—
Income tax effect of adjustments		6.9			1.6			(31.9	)
Net Economic Earnings	$	216.3		$	266.3		$	207.8

15. REGULATORY MATTERS

As discussed below for Spire Missouri and Spire Alabama, 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 regulatory liabilities related to the PGA clauses and the GSA rider are both labeled Unamortized Purchased Gas Adjustments herein.

115

 

The following regulatory assets and regulatory liabilities were reflected in the Balance Sheets as of September 30, 2022 and 2021.

	Spire				Spire Missouri				Spire Alabama
September 30	2022		2021		2022		2021		2022		2021
Regulatory Assets:
Current:
Pension and postretirement benefit costs	$	—	$	31.1	$	—	$	21.9	$	—	$	8.2
Unamortized purchased gas adjustments		322.2		243.5		275.1		242.8		43.8		—
Other		33.2		31.9		13.0		11.6		13.1		10.6
Total Current Regulatory Assets		355.4		306.5		288.1		276.3		56.9		18.8
Noncurrent:
Future income taxes due from customers		137.8		132.9		129.2		124.2		2.2		2.2
Pension and postretirement benefit costs		294.5		313.8		222.9		226.0		66.5		82.9
Cost of removal		493.7		431.9		25.2		34.9		468.5		397.0
Energy efficiency		57.2		47.6		57.2		47.6		—		—
Other		129.2		67.3		113.1		50.4		1.0		1.2
Total Noncurrent Regulatory Assets		1,112.4		993.5		547.6		483.1		538.2		483.3
Total Regulatory Assets	$	1,467.8	$	1,300.0	$	835.7	$	759.4	$	595.1	$	502.1
Regulatory Liabilities:
Current:
Pension and postretirement benefit costs	$	—	$	5.8	$	—	$	3.6	$	—	$	2.2
Unamortized purchased gas adjustments		—		11.0		—		—		—		10.2
Other		3.7		17.8		—		13.5		—		1.0
Total Current Regulatory Liabilities		3.7		34.6		—		17.1		—		13.4
Noncurrent:
Deferred taxes due to customers		145.3		127.5		127.9		110.2		—		—
Pension and postretirement benefit costs		172.6		159.3		143.6		131.4		19.4		19.8
Accrued cost of removal		32.9		36.2		—		4.9		—		—
Unamortized purchased gas adjustments		53.0		284.3		53.0		284.3		—		—
Other		14.4		13.6		7.3		8.0		3.6		3.6
Total Noncurrent Regulatory Liabilities		418.2		620.9		331.8		538.8		23.0		23.4
Total Regulatory Liabilities	$	421.9	$	655.5	$	331.8	$	555.9	$	23.0	$	36.8

A portion of the Company’s regulatory assets are not earning a return and are shown in the schedule below:

	Spire				Spire Missouri
September 30	2022		2021		2022		2021
Pension and postretirement benefit costs	$	152.9	$	165.7	$	152.9	$	165.7
Future income taxes due from customers		135.6		130.7		129.2		124.2
Unamortized purchase gas adjustments		275.1		242.8		275.1		242.8
Other		122.7		86.0		122.7		86.0
Total Regulatory Assets Not Earning a Return	$	686.3	$	625.2	$	679.9	$	618.7

Like all the Company’s regulatory assets, these regulatory assets 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 normally about one year, but a portion will be three years due to the Filing Adjustment Factor discussed below. 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.

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Spire Missouri

As authorized by the MoPSC, the PGA clause allows Spire Missouri to flow through to customers, subject to prudence review by the MoPSC, the cost of purchased gas supplies. To better match customer billings with market natural gas prices, Spire Missouri is allowed to file to modify, on a periodic basis, the level of gas costs in its PGA. Certain provisions of the PGA clause are included below:

•  Spire Missouri has a risk management policy that allows for the purchase of natural gas derivative instruments with the goal of managing price risk associated with purchasing natural gas on behalf of its customers. The MoPSC clarified that costs, cost reductions, and carrying costs associated with the Utility’s use of natural gas derivative instruments are gas costs recoverable through the PGA mechanism.

•  The tariffs allow Spire Missouri flexibility to make up to three discretionary PGA changes during each year, in addition to its mandatory November PGA change, so long as such changes are separated by at least two months.

•  Spire Missouri is authorized to apply carrying costs to all over- or under-recoveries of gas costs, including costs and cost reductions associated with the use of derivative instruments, including cash payments for margin deposits.

•  Pre-tax income from off-system sales and capacity release revenues is shared with customers (such that customers receive 75% and Spire Missouri receives 25%), with an estimated amount assumed in PGA rates.

Pursuant to the provisions of the PGA clause, the difference between actual costs incurred and costs recovered through the application of the PGA clause, as well as the difference between the actual amount of off-system sales and capacity release revenues allocated to customers and the estimated amount assumed in PGA rates, are reflected as a regulatory asset or liability at the end of the fiscal year. At that time, the balance is classified as a current asset or current liability and recovered from, or credited to, customers over an annual period commencing in the subsequent November. The balance in the current account is amortized as amounts are reflected in customer billings.

On March 7, 2018, the MoPSC issued its order in two general rate cases (docketed as GR-2017-0215 and GR-2017-0216), approving new tariffs that became effective on April 19, 2018. Certain provisions of the order allowed less future recovery of certain deferred or capitalized costs than estimated based upon previous rate proceedings, and management determined that the related regulatory assets should be written down. Spire Missouri filed an appeal of portions of the MoPSC’s order, including the disallowance of certain pension costs. On February 9, 2021, the Missouri Supreme Court issued its decision, reversing the MoPSC’s order with respect to certain pension costs. The case was remanded back to the MoPSC with directions that $9.0 in pension assets that accrued between 1994 and 1996 be added to the Company’s prepaid pension asset. Based on the court’s decision, the Company increased its noncurrent regulatory asset for “Pension and postretirement benefit costs” and reduced operation and maintenance expense for the three months ended March 31, 2021. Like the original write-down in 2018, this adjustment is excluded for the net economic earnings financial measure. The remand issue is being considered as part of Spire Missouri’s ongoing general rate case (discussed below).

The Infrastructure System Replacement Surcharge (ISRS) allows Spire Missouri expedited recovery for its investment to replace its worn out or deteriorated infrastructure without the necessity of a formal rate case. On November 19, 2019, the Missouri Western District Court of Appeals issued rulings (“ISRS rulings”) that determined certain capital investments in 2016 through 2018 were not eligible for recovery under the ISRS. As a result, Spire Missouri recorded a $12.2 provision for fiscal year 2019, which was excluded for the net economic earnings financial measure. This matter was settled by the end of fiscal 2020. On December 23, 2021, Spire Missouri filed a new ISRS case, its first under the ISRS statute amendments of 2020, seeking accelerated recovery of $11.3 in annual revenue for eligible pipe replacement from June through December 2021. On April 21, 2022, the MoPSC approved a settlement among the parties to resolve the ISRS case, resulting in $8.5 in incremental annual revenue effective in May 2022. On June 3, 2022, Spire Missouri filed a new ISRS case, its first with the inclusion of the "Contractor Bid" requirement identified in the ISRS statute amendments of 2020, seeking accelerated recovery of $11.9 in annual revenue for eligible pipe replacement from January through June 2022. On October 5, 2022, the MoPSC approved a settlement among the parties to resolve the ISRS case, resulting in $10.5 in incremental revenue effective October 21, 2022, bringing total annual ISRS revenue to $19.0.

In September 2020, Spire Missouri, the MoPSC staff and the Office of Public Counsel (OPC) reached a Unanimous Stipulation and Agreement regarding Spire Missouri’s request for an Accounting Authority Order (AAO) pertaining to certain costs and lost customer fee revenue related to the COVID-19 pandemic. In October 2020, the MoPSC issued an order approving that agreement and granting an AAO for the period of March 1, 2020 through March 31, 2021. As part of the 2021 rate order discussed below, the settled balance of deferred costs, including foregone late payment fees and reconnect/disconnect fees that Spire Missouri was authorized to defer, totaled $6.2 and will be recovered through a five-year amortization of a regulatory asset.

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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 tariffs, Spire Missouri invoiced the cost of gas and associated penalties totaling $195.8 to non-compliant marketers pursuant to the MoPSC-approved OFO tariff and recorded accounts receivable. Recoveries collected will be an offset to cost of natural gas for firm utility customers through the 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. Some marketers filed complaints with the MoPSC requesting review of the transactions between them and Spire Missouri. Through the first quarter of fiscal 2022, the Company had no reason to believe the MoPSC would not follow the tariff and had determined collection was probable, so the entire amount was recognized. 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. Pursuant to the approved settlement, the marketers have begun making payments to Spire Missouri that will be credited to the PGA/ACA, the marketer complaints have been dismissed at the MoPSC, and Spire Missouri has dismissed its federal lawsuits against the marketers. Spire Missouri is not subject to any upstream OFO penalties on any interstate pipelines.

As a result of the significant net deferred gas costs and average inventory cost in the second quarter of fiscal 2021, primarily due to Winter Storm Uri, Spire Missouri filed for and received MoPSC approval for an adjustment to the PGA tariff to increase a Filing Adjustment Factor (FAF) credit on customers' bills for three years. This helps customers by lowering the net PGA rate to mitigate impacts from Winter Storm Uri costs and the increased gas market from 2020 to 2021. All gas costs will eventually be recovered by Spire Missouri through the PGA or ACA mechanisms and carrying costs will be applied per the terms of the tariff.

Spire Missouri is able to sell excess natural gas supply and capacity to third parties off-system, resulting in significant savings to its firm utility customers through the gas incentive mechanisms of its PGA as described above. Spire Missouri retains 25% and passes 75% through to its customers as gas cost savings. During Winter Storm Uri, Spire Missouri had an unusually large off-system sale resulting in $100.0 of incremental gross revenue. Due to the nature and magnitude of this particular transaction, Spire Missouri initially deferred recognition of its 25% share and established a regulatory liability to allow time to assess the transaction in light of the open rate proceeding. When the regulatory treatment became clear in the fourth quarter of fiscal 2021, the Company reversed the liability and recorded the amount in operating revenues.

The MoPSC approved compliance tariffs with an effective date of December 23, 2021, in Spire Missouri’s general rate case GR-2021-0108. 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 decision, as reflected in the amended report and order dated November 12, 2021, revised the MoPSC’s long-standing position regarding Spire Missouri’s compliance with the FERC Uniform System of Accounts (USOA) on the capitalization of prudently incurred non-operational overheads. The amended report and order required Spire Missouri to cease capitalization of these overhead costs at the time new rates went into effect until a MoPSC staff audit of their revised interpretation of compliance with the USOA framework could be completed. MoPSC staff completed this audit and filed its audit report on March 18, 2022. The report recommends changes to Spire Missouri’s overhead capitalization rates based upon its new time study and the results of the audit. On April 13, 2022, the MoPSC issued an Order Authorizing Accounting Treatment clarifying that Spire Missouri may defer all non-operational overheads from December 23, 2021 forward into a regulatory asset for future review by the MoPSC in an appropriate proceeding. Based on Spire Missouri’s assessment of recoverability, the total amount deferred under this order was $42.8 through September 30, 2022, comprising:

   • $19.0 in accordance with new capitalization rates determined by the study and audit;

   • $18.8 of prudent costs which are in excess of the capitalization rates determined by the study and audit; and

   • $5.0 of prudent costs related to the April 2022 ISRS settlement discussed above.

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On April 1, 2022, Spire Missouri filed tariff sheets to initiate a new general rate case proceeding which is intended to address the deferred amounts, along with other matters, and is expected to be resolved in the first half of fiscal 2023. The proposed tariff changes include revised rate schedules designed to produce an annual net increase in Spire Missouri’s gas revenues of approximately $151.9. Intervenor direct testimony was filed in late August and early September 2022. The MoPSC has set a test year ending September 30, 2021, adjusted for known and measurable rate base, revenue and expense items through May 31, 2022, with a true-up period through September 30, 2022. On October 7, 2022, Spire Missouri and various intervenors filed rebuttal testimony. MoPSC staff also filed updated accounting schedules reflecting a revised revenue requirement of $71.0. Local public hearings concluded in mid- October 2022. Following these hearings, 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. A hearing regarding this Stipulation is currently set for November 18, 2022. The remainder of the procedural schedule has been suspended, pending MoPSC action on the Stipulation. If approved, the Stipulation would, among other things, authorize $78.0 in new base rate revenue (with rates effective no later than January 1, 2023), and authorize recovery of deferred overheads through amortization of the related regulatory assets discussed in the previous paragraph.

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 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. The MoPSC has not yet taken any further action in the docket.

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. The cases are expected to focus on the cost and amount of incremental natural gas purchases for the storm period, as well as the subscription and use of transportation and natural gas storage assets during the period.

On February 23, 2022, the MoPSC issued an order approving Spire Missouri’s request for $800.0 in new financing authority over three years, subject to certain customary conditions.

Spire Alabama

In October 2018, the APSC approved the renewal of its Rate Stabilization and Equalization (RSE) rate-setting process for Spire Alabama through September 30, 2022, limiting equity as a percent of total capitalization to a range of 56.5% to 55.5%. Under RSE, the APSC conducts quarterly reviews to determine whether Spire Alabama’s return on average common equity (ROE) at the end of the rate year will be within the allowed range of return. Reductions in rates can be made quarterly to bring the projected ROE within the allowed range; increases, however, are allowed only once each rate year, effective December 1, and cannot exceed 4% of prior-year revenues. Spire Alabama’s allowed range of ROE is 10.15% to 10.65% with an adjusting point of 10.4%. In September 2022, the APSC approved the renewal of RSE through September 30, 2025, with certain modifications to the current terms. Effective October 1, 2022, Spire Alabama's allowed range of return on average common equity is 9.50% to 9.90% with an adjusting point of 9.70%. Average Common Equity growth is limited to 6.00% each year. Spire Alabama retains the ability to receive a performance-based adjustment of +/- 10 basis points to the return on equity adjusting point, based upon the terms of the previously approved Accelerated Infrastructure Modernization (AIM) Program tariff. However, in September of 2022, Spire applied for and received approval to suspend the operation of the AIM performance-based adjustment for 2023. The quarterly reviews have been modified to occur only in March, June, and September. Spire Alabama retained the current equity limitation as a percent of total capitalization at 55.5% and adjustments to the Cost Control Measure (CCM) as noted below.

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The inflation-based CCM established by the APSC, allows for annual changes in operation and maintenance (“O&M”) expense per customer relative to an index range. The CCM will be calculated based upon O&M expense per customer and the O&M base year will be Spire Alabama’s actual 2018 O&M expense with an adjustment to that base in 2019 of 2/3 of the 2018 CCM differential (amount below the CCM range in 2018) and an adjustment in 2020 of 1/3 of the 2018 CCM differential, with no adjustment to the base in 2021 and 2022. Spire Alabama’s 2018 actual rate year O&M expense will be inflation-adjusted using a new index range based on the June CPI-U each rate year plus or minus 1.50%. If rate year O&M expense falls within the index range, no adjustment is required. If rate year O&M expense exceeds the index range, three-quarters of the difference is returned to customers through future rate adjustments. To the extent rate year O&M is less than the index range, Spire Alabama benefits by one-half of the difference through future rate adjustments. Effective October 1, 2022, the Base Year O&M expense will be computed by averaging the actual O&M expenses for 2020, 2021, and 2022. The Base CPI-U will be computed by averaging the August CPI-U for 2020, 2021, 2022. The Index will be computed by measuring the change from the Base CPI-U to the August CPI-U of the preceding completed fiscal year, less a factor of 1.50%. The index range will be computed by adjusting the index plus or minus 1.50%. If rate year O&M expense falls within the index range, no adjustment is required. If rate year O&M expense exceeds the index range, three-quarters of the difference is returned to customers through future rate adjustments. To the extent rate year O&M is less than the index range, Spire Alabama benefits by one-half of the difference through future rate adjustments. If a benefit is achieved, the Base Year and the Base CPI-U for the following year will each be reset to an average of the three preceding completed years. If a benefit is not achieved, the Base Year and Base CPI-U will not be updated. Certain items that fluctuate based on situations demonstrated to be beyond Spire Alabama’s control may be excluded from the CCM calculation.

The RSE reduction for September 30, 2021, following the year end point of test was $2.2 to bring the expected rate of return on average common equity to within the allowed rate of return. The CCM benefit for rate year 2021 was $8.8. To mitigate the impact on ratepayers, Spire Alabama requested and received approval from the APSC to recover the 2021 CCM benefit over five years (with recognition of revenue only up to 24 months in advance of recovery). As a part of the annual update for RSE, on December 29, 2021, Spire Alabama filed an increase for rate year 2022 of $5.3. The 2021 RSE reduction of $2.2, the five-year recovery of the 2021 CCM benefit of $8.8 and the annual RSE increase of $5.3 were all effective on January 1, 2022. There was no RSE reduction in 2022 for the January 31, April 30, July 31 or September 30 quarterly points of test. Spire Alabama recorded a CCM benefit for rate year 2022 of $17.2. Similar to the rate year 2021 CCM benefit, Spire has requested and received approval to recover the rate year 2022 CCM benefit over five years. On October 26, 2022, Spire Alabama made its annual 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 ROE.

Spire Alabama’s rate schedules for natural gas distribution charges contain a GSA rider which permits the pass-through to customers of changes in the cost of gas supply. Spire Alabama’s tariff provides a temperature adjustment mechanism, also included in the GSA rider, which is designed to moderate the impact of departures from normal temperatures on Spire Alabama’s earnings. The temperature adjustment applies primarily to residential, small commercial and small industrial customers. Other non-temperature weather-related conditions that may affect customer usage are not included in the temperature adjustment. There is also a mechanism under Spire Alabama's GSA rider allowing the utility to create value through off-system sales of excess natural gas supply and capacity and to retain 25% of the value created while giving 75% of the value to customers. As of April 2022, the first $1.6 of value from capacity release goes entirely to customers before Spire Alabama retains 25%. In the past year, Spire Alabama filed GSA rate increases effective December 1, 2021, April 1, 2022, August 1, 2022, and October 1, 2022, primarily attributable to higher natural gas prices.

The APSC approved an Enhanced Stability Reserve (ESR) in 1998, which was subsequently modified and expanded in 2010. As currently approved, the ESR provides deferred treatment and recovery for the following: (1) extraordinary O&M expenses related to environmental response costs; (2) extraordinary O&M expenses related to self-insurance costs that exceed $1.0 per occurrence; (3) extraordinary O&M expenses, other than environmental response costs and self-insurance costs, resulting from a single force majeure event or multiple force majeure events greater than $0.3 and $0.4, respectively, during a rate year; and (4) negative individual large commercial and industrial customer budget revenue variances that exceed $0.4 during a rate year. Charges to the ESR are subject to certain limitations which may disallow deferred treatment and which prescribe the timing of recovery. Subsequent to the nine-year period and subject to APSC authorization, Spire Alabama expects to be able to recover underfunded ESR balances over a five-year amortization period with an annual limitation of $0.7. Amounts in excess of this limitation are deferred for recovery in future years.

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On July 12, 2022, the APSC approved Spire Alabama’s application for an intercompany revolving credit agreement allowing Spire Alabama to borrow from Spire in a principal amount not to exceed $275.0 (up from the previously approved $200.0) at any time outstanding in combination with its bank line of credit, and to loan to Spire in a principal amount not to exceed $25.0 (unchanged) at any time outstanding. On September 13, 2022, the APSC approved an application for up to $175.0 of additional long-term debt financing for Spire Alabama (ultimately issued on October 13, 2022).

Spire

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

Spire Gulf has similar rate regulation to Spire Alabama. Its RSE rate-setting mechanism was renewed in September 2021 for a four-year term through September 2025. The RSE allowed ROE range was 10.45% to 10.95% with an adjusting point of 10.70% in fiscal 2021, while the ROE range is 9.70% to 10.30% with an adjusting point of 9.95% for fiscal 2022 through fiscal 2025. On October 26, 2021, Spire Gulf made its annual RSE rate filing with the APSC based on its budget for fiscal 2022 and an allowed ROE of 9.95%. New rates designed to provide increased annual revenues of $1.0 became effective January 3, 2022. On October 26, 2022, Spire Gulf made its annual RSE filing for fiscal 2023 reflecting an increase to annual revenues of $3.5 that is pending review by the APSC. The CCM has similar evaluation and recovery provisions when expenses exceed or are under a band of +/- 1.50% around the CPI-U inflated O&M per customer expense level from the base year, excluding expenses for pensions and gas bad debt. The base year for the O&M index was 2017 for fiscal 2020 and 2021 and was 2021 for fiscal 2022. Since a CCM benefit was recorded in fiscal 2022, the base year O&M index for fiscal 2023 through fiscal 2025 will be the 2022 O&M level. Spire Gulf recorded a CCM benefit for rate year 2021 of $2.3 to revenues, resulting in a net income benefit of $1.6. A CCM benefit of $1.7 was recorded for fiscal 2022 to an economic development fund that can be used for economic development purposes subject to APSC approval. Spire Gulf has a Cast Iron Main Replacement Factor (CIF) that provides an enhanced return on the pro-rata costs associated with cast iron main replacement exceeding 10 miles per year based on a 75% weighting for the equity content. Capital expenditures recovered under the CIF have not increased since fiscal 2019 pursuant to applicable tariff provisions although the Company is continuing to recover costs of service associated with accumulated expenditures under the CIF. Spire Gulf also has an ESR for negative revenue variances over $0.1 or a force majeure event expense of $0.1 (or two events that exceed $0.15), a Self Insurance Reserve for general liability coverage, and an Environmental Cost Recovery Factor that recovers 90% of prudently incurred costs for compliance with environmental laws, rules and regulations. Spire Gulf has an APSC-approved intercompany revolving credit agreement with Spire to borrow in a principal amount not to exceed $75.0 and to loan up to $25.0. On September 13, 2022, the APSC approved the issuance of $30.0 of long-term debt (ultimately issued on October 13, 2022) to refinance outstanding short-term debt.

Spire Mississippi utilizes a formula rate-making process under the Rate Stabilization Adjustment Rider (RSA). An allowed return on equity (currently 10.03%) is computed annually and compared to the actual return on equity based on a rate year ending June 30. If the actual equity return on an end of period rate base is beyond the allowed return on equity by 1.0%, then 75% of any shortfall is recovered through a rate increase and 50% of any excess results in a rate decrease. Updates may include known and measurable adjustments to historic costs from the 12 months ended June 30, submitted September 15 for an effective date of November 1, unless disputed by the Mississippi Public Utilities Staff (MPUS), with any disputes to be resolved by the Mississippi Public Service Commission (MSPSC) by January 15 of the following year. On January 12, 2021, the MSPSC approved an agreement between Spire Mississippi and the MPUS settling its RSA filing that was made on August 28, 2020, resulting in a $0.3 increase in annual revenue. New rates became effective January 13, 2021. On August 23, 2021, Spire Mississippi filed its RSA for the rate year ended June 30, 2021, which reflected an increase to annual revenue totaling $1.1. The MSPSC, by its order dated January 18, 2022, approved a stipulation agreement between the MPUS and Spire Mississippi that provided for increased annual revenues of $0.8 through rates that became effective on February 1, 2022. Spire Mississippi’s RSA filing made on September 14, 2022 reflected a rate increase of $1.3 and is pending review by the MPUS. A Supplemental Growth Rider provides recovery of certain system expansion projects to serve qualified economic development projects.

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In August 2018, the FERC approved an order issuing a Certificate of Public Convenience and Necessity for the Spire STL Pipeline ( “August 2018 Order”). In November 2018, the FERC issued a Notice to Proceed, and in November 2019, Spire STL Pipeline received FERC authorization to place the pipeline into service. Also, 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, that court issued an order vacating the Certificate of Public Convenience and Necessity and remanding the matter back to the FERC for further action. On September 14, 2021, and December 3, 2021, the FERC issued temporary certificates to allow the pipeline to continue operating indefinitely while it considers approval of a new permanent certificate. Certain parties in the temporary certificate proceeding sought rehearing of the FERC’s December 3, 2021 temporary certificate. The FERC denied rehearing by operation of law on February 3, 2022. On March 7, 2022, one group of the rehearing parties filed a petition for review of FERC’s December 3, 2021 temporary certificate order in the DC Circuit limited to whether the temporary certificates carry eminent domain authority. On June 29, 2022, the DC Circuit issued an order holding the proceeding in abeyance pending the outcome of the FERC remand proceeding. Meanwhile on December 15, 2021, the FERC issued a notice of intent to prepare a supplemental environmental impact statement (EIS) regarding the Spire STL Pipeline. On October 7, 2022, the FERC staff issued its final EIS, concluding that “impacts from the continued operation of the Spire STL [Pipeline] would be less than significant, with the exception of climate change impacts resulting from GHG [greenhouse gas] emissions that are not characterized as significant or insignificant.”

Spire STL Pipeline will continue to pursue all legal and regulatory avenues to ensure access to reliable, affordable and safe delivery of energy for eastern Missouri. While there is no impairment at this time, if the pipeline is taken out of service, the Company’s financial condition and results of operations may be adversely impacted by impairment of Spire STL Pipeline’s assets, currently carried at over $270, and other effects. If Spire Missouri is unable to obtain sufficient pipeline capacity to meet its customers’ annual and seasonal natural gas demands, Spire Missouri’s financial condition and results of operations may be adversely impacted.

On October 9, 2020, Spire Storage West LLC (“Spire Storage”) filed with the FERC an Abbreviated Application for an Amendment of Certificate of Public Convenience and Necessity, Reaffirmation of Market-Based Rate Authority, and Related Authorizations pursuant to Section 7(c) of the Natural Gas Act. The application requests authorization to expand capacity and increase pipeline connectivity at certain of Spire Storage’s natural gas storage facilities in Wyoming. On March 15, 2022, the FERC issued a final EIS for this project, concluding that construction and operation of the project would not result in significant environmental impacts and that project greenhouse gas emissions fall even below the FERC’s presumptive significance threshold for climate change impacts. On May 19, 2022, the FERC approved an order issuing certificates and granting abandonment as requested in the application. On June 21, 2022, following the submittal of an implementation plan, the FERC staff issued its limited notice to proceed with the project.

16. COMMITMENTS AND CONTINGENCIES

Commitments

The Company and the Utilities have entered into contracts with various counterparties, expiring on dates through 2039, for the storage, transportation, and supply of natural gas. Minimum payments required under the contracts in place at September 30, 2022, are estimated at $2,107.1, $1,224.7 and $723.1 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.

A consolidated subsidiary is a limited partner in 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 September 30, 2022, Spire has contributed $1.9.

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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).

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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.

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In 2011, a removal action was completed and a "no further action" letter was received at the Huntsville manufactured gas plant 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.

17. LEASES

The lease agreement covering the Company’s primary office space in St. Louis extends through February 2035, with an option to renew for an additional five years. Spire Alabama’s lease agreement for office space in Birmingham extends through January 2037, with an option to renew for two additional five-year terms. The lease agreement covering Spire Marketing and Spire Storage office space in Houston extends through December 2028, with options to terminate three years earlier or to renew for an additional five years. The renewal options in the St. Louis and Houston leases are reasonably certain to be exercised and are included in the lease term used to determine the right-of-use assets and lease liabilities. The Company and its subsidiaries have other relatively minor rental arrangements for real estate and equipment with remaining terms of up to eight years.

Operating lease cost, cash flow and noncash information are shown in the following table.

	Spire						Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020		2022		2021		2020
Operating lease cost, including amounts capitalized	$	7.4	$	7.2	$	8.7	$	0.5	$	0.4	$	0.5	$	2.1	$	2.1	$	3.5
Cash flow and noncash information about operating leases:
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities		7.3		7.2		8.5		0.5		0.4		0.5		2.1		2.1		3.3
Right-of-use assets obtained in exchange for lease liabilities		24.6		—		71.1		1.1		—		2.1		23.5		—		10.0

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The following table shows year-end balance sheet and weighted-average information about operating leases.

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Right-of-use assets	$	73.7		$	60.4		$	1.7		$	1.4		$	20.2		$	4.8
Lease liabilities, current		6.5			6.5			0.4			0.3			1.9			1.9
Lease liabilities, noncurrent		73.7			53.7			1.5			1.0			24.6			2.7
Weighted-average remaining lease term (in years)		15.0			15.3			5.1			4.5			14.3			2.3
Weighted-average discount rate		4.1	%		4.2	%		2.2	%		2.5	%		3.7	%		2.2	%

On the balance sheets, right-of-use assets are included in “Deferred Charges and Other Assets: Other,” current lease liabilities are in “Current Liabilities: Other,” and noncurrent lease liabilities are in “Deferred Credits and Other Liabilities: Other.”

Following is a maturity analysis by fiscal year for operating lease liabilities as of September 30, 2022.

	Spire			Spire Missouri			Spire Alabama
2023	$	6.7		$	0.4		$	1.9
2024		7.3			0.5			2.1
2025		7.4			0.4			2.1
2026		7.3			0.3			2.2
2027		7.3			0.2			2.3
Thereafter		72.8			0.2			24.1
Total undiscounted lease payments		108.8			2.0			34.7
Less present value discount		(28.6	)		(0.1	)		(8.2	)
Total current and noncurrent lease liabilities	$	80.2		$	1.9		$	26.5

There are no significant finance leases, short-term leases, subleases, variable lease payments, residual value guarantees, restrictions or covenants pertaining to leases.

The Company elected, for all asset classes, not to recognize right-of-use assets and lease liabilities for short-term leases. Instead, the lease payments for short-term leases are recognized in profit or loss on a straight-line basis over the lease term and variable lease payments are recognized in the period in which the obligation for those payments is incurred. The Company elected, for all asset classes, not to separate nonlease components from lease components and instead to account for each separate lease component and the nonlease components associated with that lease component as a single lease component.

The discount rate used for all the leases is the applicable incremental borrowing rate, which is the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. For a subsidiary lessee, the rate applicable to the subsidiary is used unless the lease terms are influenced by parent credit.

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Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

There have been no changes in or disagreements on accounting and financial disclosure with Spire’s, Spire Missouri’s, or Spire Alabama’s outside auditors that are required to be disclosed.

Item 9A. 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 our fourth fiscal quarter 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 our fourth fiscal quarter 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 our fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

The Management Reports on Internal Control Over Financial Reporting and the Reports of Independent Registered Public Accounting Firm are included in Item 8, Financial Statements and Supplementary Data.

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Item 9B. Other Information

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

PART III

Item 10. Directors, Executive Officers and Corporate Governance

Information about:

•  our directors is incorporated by reference from the discussion under Proposal 1 of our proxy statement to be filed on or about December 14, 2022 (“2022 proxy statement”);

•  our executive officers is reported in Part I of this Form 10-K;

•  our Financial Code of Ethics is posted on our website, www.SpireEnergy.com, under Investors/Governance/Governance documents (http://investors.spireenergy.com/governance/governance-documents); and

•  our Audit Committee, our Audit Committee financial experts, and submitting nominations to the Corporate Governance Committee

is incorporated by reference from the discussion in our 2022 proxy statement under the heading “Governance.”

In addition, our Code of Business Conduct, Corporate Governance Guidelines, and charters for our Audit, Compensation and Corporate Governance Committees are available under “Governance documents” on our website, as indicated above, and a copy will be sent to any shareholder upon written request.

Item 11. Executive Compensation

Information about director and executive compensation is incorporated by reference from the discussion in our 2022 proxy statement under the headings “Directors’ compensation” and “Executive compensation.”

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information about:

•  security ownership of certain beneficial owners and management and

•  aggregate information regarding the Company’s equity compensation plan

is incorporated by reference from the discussion in our 2022 proxy statement under “Beneficial ownership of Spire stock.”

Item 13. Certain Relationships and Related Transactions, and Director Independence

Information about:

•  our policy and procedures for related party transactions and

•  the independence of our directors

is included in our 2022 proxy statement under “Governance” and is incorporated by reference. There were no related party transactions in fiscal 2022.

Item 14. Principal Accounting Fees and Services

Information about fees paid to our independent registered public accountant and our policy for pre-approval of services provided by our independent registered public accountant is incorporated by reference from our 2022 proxy statement under “Fees of independent registered public accountant” and “Governance,” respectively.

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PART IV

Item 15. Exhibits, Financial Statement Schedules

(a) (1) Financial Statements

See Item 8, Financial Statements and Supplementary Data, filed herewith, for a list of financial statements.

(2) Financial Statement Schedules

Schedules have been omitted because they are not applicable, related significance tests were not met, or the required data has been included in the financial statements or notes to financial statements.

(3) Exhibits

Exhibit Number	Description
2.01*	Agreement and Plan of Merger and Reorganization; filed as Appendix A to proxy statement/prospectus contained in the Company’s Registration Statement on Form S-4 filed October 27, 2000, No. 333-48794.
3.01*	Articles of Incorporation of Spire Inc., as amended, effective as of April 28, 2016; filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 3, 2016.
3.02*	Amended Bylaws of Spire Inc., effective as of November 11, 2021; filed as Exhibit 3.2 to the Company’s Current Report on Form 8-K on November 12, 2021.
3.03*	Spire Missouri Inc.’s Amended Articles of Incorporation, as amended, effective August 30, 2017; filed as Exhibit 3.1 to Spire Missouri’s Current Report on Form 8-K on September 1, 2017.
3.04*	Amended Bylaws of Spire Missouri Inc., effective as of March 26, 2020; filed as Exhibit 3.1 to Spire Missouri’s Current Report on Form 8-K on March 27, 2020.
3.05*	Articles of Amendment of the Articles of Incorporation of Spire Alabama Inc., dated September 1, 2017; filed as Exhibit 3.3 to Spire Alabama’s Current Report on Form 8-K filed September 1, 2017.
3.06*	Amended Bylaws of Spire Alabama Inc. effective March 26, 2020; filed as Exhibit 3.2 to Spire Alabama’s Current Report on Form 8-K on March 27, 2020.
3.07*	Certificate of Designations with respect to the Series A Preferred Stock, dated May 16, 2019; filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.01*3	Mortgage and Deed of Trust, dated as of February 1, 1945, between Laclede Gas Company and Mississippi Valley Trust Company; filed as Exhibit 4.10 to the Company's Registration Statement on Form S-3 (No. 333-264799) on May 9, 2022.
4.02*3	Fourteenth Supplemental Indenture, dated as of October 26, 1976, between Laclede Gas and Mercantile Trust Company National Association; filed as Exhibit 4.11 to the Company's Registration Statement on Form S-3 (No. 333-264799) on May 9, 2022.
4.03*†3	Laclede Gas Board of Directors’ Resolution dated August 28, 1986 which generally provides that the Board may delegate its authority in the adoption of certain employee benefit plan amendments to certain designated Executive Officers; filed as Exhibit 4.12 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1991.
4.04*†2	Indenture dated as of November 1, 1993, between Alagasco and NationsBank of Georgia, National Association, Trustee, (“Alagasco 1993 Indenture”); filed as Exhibit 4(k) to Alagasco’s Registration Statement on Form S-3 (Registration No. 33-70466).
4.05*3	Twenty-Fourth Supplemental Indenture, dated as of June 1, 1999, between Laclede Gas and State Street Bank and Trust Company of Missouri, N.A., as trustee; filed as Exhibit 4.01 to Laclede Gas’ Current Report on Form 8-K on June 4, 1999.
4.06*3	Twenty-Fifth Supplemental Indenture, dated as of September 15, 2000, between Laclede Gas and State Street Bank and Trust Company of Missouri, as trustee; filed as Exhibit 4.01 to Laclede Gas’ Current Report on Form 8-K on September 29, 2000.
4.07*3	Laclede Gas’ Board of Directors’ Resolutions dated March 27, 2003, updating authority delegated pursuant to August 28, 1986 Laclede Gas resolutions; filed as Exhibit 4.19(a) to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2003.

129

Exhibit Number	Description
4.08*3	Twenty-Eighth Supplemental Indenture, dated as of April 15, 2004, between Laclede Gas and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.02 to Laclede Gas’ Current Report on Form 8-K on April 28, 2004.
4.09*3	Twenty-Ninth Supplemental Indenture, dated as of June 1, 2006, between Laclede Gas and UMB Bank and Trust, N.A., as trustee; filed as Exhibit 4.1 to Laclede Gas’ Current Report on Form 8-K on June 9, 2006.
4.10*2	Officers’ Certificate, dated January 16, 2007, pursuant to Section 301 of the Alagasco 1993 Indenture setting forth the terms of the 5.90 percent Notes due January 15, 2037; filed as Exhibit 4.2 to Alagasco’s Current Report on Form 8-K on January 16, 2007.
4.11*	Note Purchase Agreement, dated August 3, 2012, by and among the Company and the Purchasers listed in Schedule A thereto; filed as Exhibit 10.28 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2012.
4.12*3	Thirty-First Supplemental Indenture, dated as of March 15, 2013, between Laclede Gas and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to Laclede Gas’ Form 10-Q for the quarter ended March 31, 2013.
4.13*3	Thirty-Second Supplemental Indenture, dated as of August 13, 2013, between Laclede Gas and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to Laclede Gas’ Current Report on Form 8-K on August 13, 2013.
4.14*	Indenture, dated as of August 19, 2014, between the Company and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on August 19, 2014.
4.15*	First Supplemental Indenture, dated as of August 19, 2014, between the Company and UMB Bank & Trust, N.A., as trustee (including Form of Floating Rate Senior Notes due 2017, Form of 2.55% Senior Notes due 2019 and Form of 4.70% Senior Notes due 2044); filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K on August 19, 2014.
4.16*2	Master Note Purchase Agreement, dated as of June 5, 2015, among Alagasco and certain institutional purchasers; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015.
4.17*	Second Supplemental Indenture, dated as of February 27, 2017, between Spire Inc. and UMB Bank & Trust, N.A., as Trustee (including Form of 3.543% Senior Notes due 2024); filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K on February 27, 2017.
4.18*	Master Note Purchase Agreement dated June 20, 2016, among Spire Inc. and certain institutional purchasers party thereto; filed as Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.19*	First Supplement to Master Note Purchase Agreement dated as of March 15, 2017, among Spire Inc. and certain institutional purchasers party thereto; filed as Exhibit 4.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.20*3	Bond Purchase Agreement dated March 20, 2017, among Laclede Gas Company and certain institutional purchasers party thereto; filed as Exhibit 4.4 to the Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.21*	First Supplement to Master Note Purchase Agreement, dated as of December 1, 2017, between Spire Alabama Inc. and certain institutional investors; filed as Exhibit 4.01 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2017.
4.22*	Second Supplement to Master Note Purchase Agreement, dated as of January 15, 2019, between Spire Alabama Inc. and certain institutional investors; filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on January 22, 2019.

130

Exhibit Number	Description
4.23*	Deposit Agreement, dated as of May 21, 2019, among the Company, Computershare Inc. and Computershare Trust Company, N.A., acting jointly as depositary, and the holders from time to time of the depositary receipts described therein; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.24*	Form of depositary receipt representing the Depositary Shares; filed as Exhibit A to Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.25*	Form of Certificate representing the Series A Preferred Stock; filed as Exhibit A to Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.26*	Thirty-Third Supplemental Indenture, dated as of September 15, 2017, between Spire Missouri Inc. and UMB Bank & Trust, N.A., as trustee, filed as Exhibit 4.28 to Spire Missouri’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
4.27*	Thirty-Fourth Supplemental Indenture, dated as of November 12, 2019, between Spire Missouri Inc. and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to Spire Missouri’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2019.
4.28*	Third Supplement to Master Note Purchase Agreement, dated as of December 2, 2019, between Spire Alabama Inc. and certain institutional investors; filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on December 4, 2019.
4.29*	Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934; filed as Exhibit 4.29 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
4.30*	Fourth Supplement to Master Note Purchase Agreement, dated as of December 15, 2020, between Spire Alabama Inc. and certain institutional investors; filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on December 18, 2020.
4.31*	Indenture (For Unsecured Debt Securities), dated as of February 16, 2021, between the Company and U.S. Bank National Association, as trustee; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.32*	First Supplemental Indenture, dated as of February 16, 2021, between the Company and U.S. Bank National Association, as trustee; filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.33*	Form of Series A 0.75% Remarketable Senior Note due 2026; included in Exhibit 4.2 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.34*	Purchase Contract and Pledge Agreement, dated as of February 16, 2021, between the Company and U.S. Bank National Association, as purchase contract agent, collateral agent, custodial agent and securities intermediary; filed as Exhibit 4.4 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.35*	Form of Remarketing Agreement; included in Exhibit 4.4 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.36*	Form of Corporate Unit; included in Exhibit 4.4 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.37*	Form of Treasury Unit; included in Exhibit 4.4 to the Company’s Current Report on Form 8-K on February 16, 2021.
4.38*	Thirty-Fifth Supplemental Indenture, dated as of May 20, 2021, between Spire Missouri and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 20, 2021.
4.39*	Form of 3.300% Series First Mortgage Bonds due 2051; included in Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 20, 2021.
4.40*	Thirty-Sixth Supplemental Indenture, dated as of December 7, 2021, between Spire Missouri and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on December 7, 2021.
4.41*	Form of First Mortgage Bonds, Floating Rate Series due 2024; included in Exhibit 4.1 to the Company’s Current Report on Form 8-K on December 7, 2021.
4.42*	Thirty-Seventh Supplemental Indenture, dated as of May 2, 2022, between Spire Missouri and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022.
4.43*	Fifth Supplement to Master Note Purchase Agreement, dated as of October 13, 2022, between Spire Alabama Inc. and certain institutional investors, filed as Exhibit 4.1 to the Company’s and Spire Alabama's Current Report on Form 8-K on October 19, 2022.

131

Exhibit Number	Description
10.01*†3	Form of Indemnification Agreement between Laclede Gas and its Directors and Officers; filed as Exhibit 10.13 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1990.
10.02*†3	Salient Features of Laclede Gas’ Deferred Income Plan for Directors and Selected Executives, including amendments adopted by the Board of Directors on July 26, 1990; filed as Exhibit 10.12 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1991.
10.03*†3	Amendment to Laclede Gas’ Deferred Income Plan for Directors and Selected Executives, adopted by the Board of Directors on August 27, 1992; filed as Exhibit 10.12a to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1992.
10.04*3	Amendment and Restatement of Retirement Plan for Non-Employee Directors of Laclede Gas as of November 1, 2002; filed as Exhibit 10.08c to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2002.
10.05*3	Amendment to Terms of Retirement Plan for Non-Employee Directors of Laclede Gas as of October 1, 2004; filed as Exhibit 10.2 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended June 30, 2004.
10.06*	Form of Non-Qualified Stock Option Award Agreement with Mandatory Retirement Provisions; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 5, 2004.
10.07*	Form of Non-Qualified Stock Option Award Agreement without Mandatory Retirement Provisions; filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K on November 5, 2004.
10.08*3	Automated Meter Reading Services Agreement with Amendment dated as of July 1, 2017, between Landis+Gyr Technology, Inc., formerly known as Cellnet Technology, Inc., and Laclede Gas Company; filed as Exhibit 10.08 to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2020.
10.09*3	Restated Laclede Gas Supplemental Retirement Benefit Plan, as amended and restated as of January 1, 2005; filed as Exhibit 10.06 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.10*3	Laclede Gas Supplemental Retirement Benefit Plan II, effective as of January 1, 2005; filed as Exhibit 10.7 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.11*3	Salient Features of Laclede Gas’ Deferred Income Plan II for Directors and Selected Executives (as amended and restated effective as of January 1, 2005); filed as Exhibit 10.1 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.12*	Salient Features of the Company’s Deferred Income Plan for Directors and Selected Executives (effective as of January 1, 2005); filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.13*	The Company’s Form of Restricted Stock Award Agreement; filed as Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.14*3	The Laclede Group Management Continuity Protection Plan, effective as of January 1, 2005; filed as Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.15*	Form of Management Continuity Protection Agreement; filed as Exhibit 10.5a to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.16*3	The Laclede Group 2011 Management Continuity Protection Plan; filed as Exhibit 10.25 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2010.
10.17*	Form of Agreement under the Company’s 2011 Management Continuity Protection Plan; filed as Exhibit 10.25a to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2010.
10.18*	The Company’s Form of Performance Contingent Restricted Stock Unit Award Agreement; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2012.
10.19*3	Laclede Gas Cash Balance Supplemental Retirement Benefit Plan, effective as of January 1, 2009; filed as Exhibit 10.19 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2012.

132

Exhibit Number	Description
10.20*	Lease Agreement, dated January 21, 2014, between the Company, as Tenant, and Market 700, LLC, as Landlord; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on January 27, 2014.
10.21*	The Company’s Deferred Income Plan for Directors and Selected Executives, as Amended and Restated as of January 1, 2015; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 4, 2014.
10.22*1	The Laclede Group 2015 Equity Incentive Plan; filed as the Appendix to the Company’s Definitive Proxy Statement on Form DEF 14A on December 19, 2014.
10.23*1	The Laclede Group, Inc. Annual Incentive Plan, as Amended; filed as Appendix to the Company’s Definitive Proxy Statement on Schedule 14A on December 18, 2015.
10.24*2 3	Loan Agreement, dated December 14, 2016, by and among Spire Inc., Alabama Gas Corporation, Laclede Gas Company, and the several banks party thereto, including Wells Fargo Bank, National Association, as Administrative Agent; JPMorgan Chase Bank, N.A. and U.S. Bank National Association, as Co-Syndication Agents; Wells Fargo Securities, LLC, JPMorgan Chase Bank, N.A., and U.S. Bank National Association, as Joint Lead Arrangers and Joint Bookrunners; and Bank of America, N.A., Credit Suisse AG, Cayman Islands Branch, Morgan Stanley Bank, N.A., Regions Bank, Royal Bank of Canada, and TD Bank, N.A., as Documentation Agents; filed as Exhibit 99.1 to the Company’s Current Report on Form 8-K on December 16, 2016.
10.25*	Commercial Paper Dealer Agreement, dated December 21, 2016, between Spire Inc. and Wells Fargo Securities, LLC; filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2016.
10.26*	Commercial Paper Dealer Agreement, dated December 21, 2016, between Spire Inc. and Credit Suisse Securities (USA) LLC; filed as Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2016.
10.27*	Spire Inc. Executive Severance Plan; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on May 2, 2017.
10.28*1	Amendment 1 to The Laclede Group Annual Incentive Plan effective January 1, 2018; filed as Exhibit 10.53 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.29*1	Amendment 1 to The Laclede Group 2015 Equity Incentive Plan effective January 1, 2018; filed as Exhibit 10.54 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.30*	Amendment 1 to Spire Inc. Executive Severance Plan effective January 1, 2018; filed as Exhibit 10.55 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.31*1	Amendment 1 to The Laclede Group 2011 Management Continuity Protection Plan effective January 18, 2018; filed as Exhibit 10.56 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.32*	First Amendment to Loan Agreement, dated as of October 31, 2018, by and among Spire Inc., a Missouri corporation, Spire Alabama Inc. (formerly Alabama Gas Corporation), an Alabama corporation, and Spire Missouri Inc. (formerly Laclede Gas Company), a Missouri corporation, the Banks from time to time party thereto, and Wells Fargo Bank, National Association, as Administrative Agent for the Banks; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 6, 2018.
10.33*	Spire Deferred Income Plan, Amended and Restated Effective January 1, 2019; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.
10.34*	The Company’s Form of Restricted Stock Award Agreement; filed as Exhibit 10.38 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
10.35*	The Company’s Form of Restricted Stock Unit Award Agreement; filed as Exhibit 10.39 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
10.36*	The Company’s Form of Performance Contingent Stock Unit Award Agreement; filed as Exhibit 10.40 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.

133

Exhibit Number	Description
10.37*	Loan Agreement, dated March 26, 2020, by and among Spire Inc., as the Borrower, the lenders from time to time party thereto, as Banks, including U.S. Bank National Association, as the Administrative Agent, and TD Bank, N.A., as Documentation Agent; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on March 27, 2020.
10.38*	Loan Agreement, dated March 23, 2021, by and among Spire Missouri Inc., as the Borrower, and five banks including U.S. Bank National Association, as the Administrative Agent; filed as Exhibit 10.1 to the Company and Spire Missouri’s Current Report on Form 8-K on March 23, 2021.
10.39*	Amended and Restated Loan Agreement, dated July 22, 2022, among Spire Inc., Spire Missouri Inc., Spire Alabama Inc., Wells Fargo Bank, National Association, as administrative agent, and the lenders party thereto as Banks; filed as Exhibit 99.1 to the Company’s Current Report on Form 8-K on July 28, 2022.
10.40*	Equity Distribution Agreement of the Company, dated as of February 6, ,2019; filed as Exhibit 1.1 to the Company's Current Report on Form 8-K on February 6, 2019.
10.41*	Letter Agreement to the Equity Distribution Agreement of the Company, dated as of May 14, 2019; filed as Exhibit 1.1 to the Company's Current Report on Form 8-K on May 14, 2019.
10.42*	Second Letter Agreement to the Equity Distribution Agreement of the Company, dated as of May 10, 2022, dated as of May 9, 2022; filed as Exhibit 1.1 to the Company's Current Report on Form 8-K on May 10, 2022.
21	Subsidiaries of the Company.
23.1	Consent of Independent Registered Public Accounting Firm of the Company.
23.2	Consent of Independent Registered Public Accounting Firm of Spire Missouri Inc.
23.3	Consent of Independent Registered Public Accounting Firm of Spire Alabama Inc.
31.1	Certifications under Rule 13a-14(a) of the CEO and CFO of the Company.
31.2	Certifications under Rule 13a-14(a) of the CEO and CFO of Spire Missouri Inc.
31.3	Certifications under Rule 13a-14(a) of the CEO and CFO of Spire Alabama Inc.
32.1	Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of the Company.
32.2	Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of Spire Missouri Inc.
32.3	Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of Spire Alabama Inc.
101	Interactive Data Files including the following information from the Annual Report on Form 10-K for the fiscal year ended September 30, 2022, formatted in inline extensible business reporting language (“Inline XBRL”): (i) Cover Page Interactive Data and (ii) the Financial Statements listed on the first page of Item 8.
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. Spire Missouri Inc. File No. 1-1822. Spire Alabama Inc. File No. 2-38960.
†	Paper exhibit.
1	The Laclede Group, Inc. changed its name to Spire Inc. effective April 28, 2016.
2	Alabama Gas Corporation (“Alagasco”) changed its name to Spire Alabama Inc. effective September 1, 2017.
3	Laclede Gas Company changed its name to Spire Missouri Inc. effective August 30, 2017.

Bold items reflect management contracts or compensatory plans or arrangements.

Item 16. Form 10-K Summary

None.

134

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Spire Inc.
Date	November 16, 2022	By	/s/ Steven P. Rasche
			Steven P. Rasche
			Executive Vice President
			and Chief Financial Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date	Signature	Title
November 16, 2022	/s/ Suzanne Sitherwood	Director, President and Chief Executive Officer
	Suzanne Sitherwood	(Principal Executive Officer)
November 16, 2022	/s/ Steven P. Rasche	Executive Vice President and Chief Financial Officer
	Steven P. Rasche	(Principal Financial and Accounting Officer)
November 16, 2022	/s/ Edward L. Glotzbach	Chairman of the Board
	Edward L. Glotzbach
November 16, 2022	/s/ Mark A. Borer	Director
	Mark A. Borer
November 16, 2022	/s/ Maria V. Fogarty	Director
	Maria V. Fogarty
November 16, 2022	/s/ Carrie J. Hightman	Director
	Carrie J. Hightman
November 16, 2022	/s/ Rob L. Jones	Director
	Rob L. Jones
November 16, 2022	/s/ Brenda D. Newberry	Director
	Brenda D. Newberry
November 16, 2022	/s/ Stephen S. Schwartz	Director
	Stephen S. Schwartz
November 16, 2022	/s/ John P. Stupp Jr.	Director
	John P. Stupp Jr.
November 16, 2022	/s/ Mary Ann Van Lokeren	Director
	Mary Ann Van Lokeren

135

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Spire Missouri Inc.
Date	November 16, 2022	By	/s/ Timothy W. Krick
			Timothy W. Krick
			Controller and Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date	Signature	Title
November 16, 2022	/s/ Suzanne Sitherwood	Chairman of the Board
	Suzanne Sitherwood
November 16, 2022	/s/ Steven L. Lindsey	Director and Chief Executive Officer
	Steven L. Lindsey	(Principal Executive Officer)
November 16, 2022	/s/ Adam W. Woodard	Chief Financial Officer and Treasurer
	Adam W. Woodard	(Principal Financial Officer)
November 16, 2022	/s/ Timothy W. Krick	Controller and Chief Accounting Officer
	Timothy W. Krick	(Principal Accounting Officer)
November 16, 2022	/s/ Scott B. Carter	Director and President
	Scott B. Carter
November 16, 2022	/s/ Mark C. Darrell	Director
	Mark C. Darrell
November 16, 2022	/s/ Steven P. Rasche	Director
	Steven P. Rasche

136

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		Spire Alabama Inc.
Date	November 16, 2022	By	/s/ Timothy W. Krick
			Timothy W. Krick
			Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date	Signature	Title
November 16, 2022	/s/ Suzanne Sitherwood	Chairman of the Board
	Suzanne Sitherwood
November 16, 2022	/s/ Steven L. Lindsey	Director and Chief Executive Officer
	Steven L. Lindsey	(Principal Executive Officer)
November 16, 2022	/s/ Adam W. Woodard	Chief Financial Officer and Treasurer
	Adam W. Woodard	(Principal Financial Officer)
November 16, 2022	/s/ Timothy W. Krick	Chief Accounting Officer
	Timothy W. Krick	(Principal Accounting Officer)
November 16, 2022	/s/ Scott B. Carter	Director
	Scott B. Carter
November 16, 2022	/s/ Mark C. Darrell	Director
	Mark C. Darrell
November 16, 2022	/s/ Joseph B. Hampton	Director and President
	Joseph B. Hampton
November 16, 2022	/s/ Steven P. Rasche	Director
	Steven P. Rasche

137

EX-21

Exhibit 21

SPIRE INC.

Subsidiaries of the Registrant

Direct and Indirect Subsidiaries:	Doing Business As:	Organized Under the Laws of:
Belle Butte LLC		Missouri
Belle Butte II LLC		Missouri
Laclede Development Company		Missouri
Laclede Insurance Risk Services, Inc.		South Carolina
Spire Alabama Inc.	Spire	Alabama
Spire CNG Inc.	Spire	Missouri
Spire EnergySouth Inc.	Spire	Delaware
Spire Gulf Inc.	Spire	Alabama
Spire Marketing Inc.		Missouri
Spire Midstream LLC		Missouri
Spire Mississippi Inc.	Spire	Mississippi
Spire Missouri Inc.	Spire, Spire Missouri East or Spire Missouri West	Missouri
Spire NGL Inc.	Spire	Missouri
Spire Oil Services LLC	Spire	Missouri
Spire Resources LLC		Missouri
Spire Services Inc.	Spire	Missouri
Spire STL Pipeline LLC		Missouri
Spire Storage West LLC	Spire or Spire Storage	Delaware

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-264799, 333‑239036, and 333‑231443 on Forms S-3 and in Registration Statement Nos. 333-261304, 333‑215042, 333‑201863, and 333‑231354 on Forms S‑8 of our reports dated November 16, 2022, relating to the consolidated financial statements of Spire Inc. and subsidiaries, and the effectiveness of Spire Inc. and subsidiaries’ internal control over financial reporting, appearing in this Annual Report on Form 10-K of Spire Inc. and subsidiaries for the year ended September 30, 2022.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

EX-23.2

Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333‑264799 on Form S‑3 of our report dated November 16, 2022, relating to the financial statements of Spire Missouri Inc., appearing in this Annual Report on Form 10‑K of Spire Missouri Inc. for the year ended September 30, 2022.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

EX-23.3

Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-121077 on Form S-3 of our report dated November 16, 2022, relating to the financial statements of Spire Alabama Inc., appearing in this Annual Report on Form 10-K of Spire Alabama Inc. for the year ended September 30, 2022.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 16, 2022

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Suzanne Sitherwood, certify that:

1. I have reviewed this annual report on Form 10-K 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:	November 16, 2022	Signature:	/s/ Susanne Sitherwood
			Suzanne Sitherwood
			President and Chief Executive Officer

CERTIFICATION

I, Steven P. Rasche, certify that:

1. I have reviewed this annual report on Form 10-K 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:	November 16, 2022	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 annual report on Form 10-K 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:	November 16, 2022	Signature:	/s/ Steven L. Lindsey
			Steven L. Lindsey
			Chief Executive Officer

CERTIFICATION

I, Adam W. Woodard, certify that:

1. I have reviewed this annual report on Form 10-K 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:	November 16, 2022	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 annual report on Form 10-K 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:	November 16, 2022	Signature:	/s/ Steven L. Lindsey
			Steven L. Lindsey
			Chief Executive Officer

CERTIFICATION

I, Adam W. Woodard, certify that:

1. I have reviewed this annual report on Form 10-K 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:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Inc.

Date:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Inc.

Date:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Missouri Inc.

Date:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Missouri Inc.

Date:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Alabama Inc.

Date:	November 16, 2022	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-K for the period ended September 30, 2022, 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-K for the period ended September 30, 2022, fairly presents, in all material respects, the financial condition and results of operations of Spire Alabama Inc.

Date:	November 16, 2022	Signature:	/s/ Adam W. Woodard
			Adam W. Woodard
			Chief Financial Officer

XML

Document And Entity Information - USD ($)	12 Months Ended
	Sep. 30, 2022	Nov. 11, 2022	Mar. 31, 2022
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	FY
Document Fiscal Year Focus	2022
Document Type	10-K
Document Annual Report	true
Document Period End Date	Sep. 30, 2022
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 Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
ICFR Auditor Attestation Flag	true
Entity Common Stock, Shares Outstanding		52,499,844
Entity Public Float			$ 3,627,663,025
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
Auditor Name	Deloitte & Touche LLP
Auditor Location	St. Louis, Missouri
Auditor Firm ID	34
Spire Missouri [Member]
Document Information [Line Items]
Entity Central Index Key	0001126956
Entity Registrant Name	Spire Missouri Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
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 Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
ICFR Auditor Attestation Flag	false
Entity Common Stock, Shares Outstanding		25,325
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
Auditor Name	Deloitte & Touche LLP
Auditor Location	St. Louis, Missouri
Auditor Firm ID	34
Spire Alabama Inc [Member]
Document Information [Line Items]
Entity Central Index Key	0001126956
Entity Registrant Name	Spire Alabama Inc.
Amendment Flag	false
Current Fiscal Year End Date	--09-30
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
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 Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
ICFR Auditor Attestation Flag	false
Entity Common Stock, Shares Outstanding		1,972,052
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
Auditor Name	Deloitte & Touche LLP
Auditor Location	St. Louis, Missouri
Auditor Firm ID	34
Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	Depositary Shares, each representing a 1/1,000th interest in a share of 5.90% Series A Cumulative Redeemable Perpetual
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

Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021		Sep. 30, 2020
Operating Revenues	$ 2,198.5	$ 2,235.5		$ 1,855.4
Operating Expenses:
Natural gas	923.9	946.3		696.1
Operation and maintenance	449.6	465.8		458.6
Depreciation and amortization	237.3	213.1		197.3
Taxes, other than income taxes	179.5	160.1		148.4
Impairments	0.0	0.0		148.6
Total Operating Expenses	1,790.3	1,785.3		1,649.0
Operating Income	408.2	450.2		206.4
Interest Expense, Net	119.8	106.6		105.5
Other (Expense) Income, Net	(8.7)	(3.4)		0.1
Income Before Income Taxes	279.7	340.2		101.0
Income Tax Expense	58.9	68.5		12.4
Net Income	220.8	271.7		88.6
Provision for preferred dividends	14.8	14.8		14.8
Income allocated to participating securities	0.3	0.4		0.1
Net Income Available to Common Shareholders	205.7	256.5		73.7
Other Comprehensive Income (Loss), Net of Tax	43.6	44.8		(9.9)
Comprehensive Income	264.4	316.5		78.7
Operating Revenues	$ 2,198.5	$ 2,235.5		$ 1,855.4
Weighted Average Number of Common Shares Outstanding:
Basic (in shares)	52.0	51.6		51.2
Diluted (in shares)	52.1	51.7		51.3
Basic Earnings Per Share of Common Stock (in dollars per share)	$ 3.96	$ 4.97		$ 1.44
Diluted Earnings Per Share of Common Stock (in dollars per share)	$ 3.95	$ 4.96		$ 1.44
Operating Revenues	$ 2,198.5	$ 2,235.5		$ 1,855.4
Spire Missouri [Member]
Operating Revenues	1,321.0	1,516.6		1,193.6
Operating Expenses:
Natural gas	587.0	786.8		515.8
Operation and maintenance	255.7	261.1		251.0
Depreciation and amortization	145.3	129.2		118.0
Taxes, other than income taxes	129.0	110.9		103.2
Total Operating Expenses	1,117.0	1,288.0		988.0
Operating Income	204.0	228.6		205.6
Interest Expense, Net	60.9	50.3		49.4
Other (Expense) Income, Net	(6.9)	(8.9)		(8.7)
Income Before Income Taxes	136.2	169.4		147.5
Income Tax Expense	21.3	25.3		17.3
Net Income	114.9	144.1	[1]	130.2	[1]
Other Comprehensive Income (Loss), Net of Tax	1.5	(1.3)	[1]	(0.5)
Comprehensive Income	116.4	142.8		129.7
Operating Revenues	1,321.0	1,516.6		1,193.6
Weighted Average Number of Common Shares Outstanding:
Operating Revenues	1,321.0	1,516.6		1,193.6
Spire Alabama Inc [Member]
Operating Revenues	509.1	494.0		455.0
Operating Expenses:
Natural gas	161.5	145.3		118.9
Operation and maintenance	130.1	132.5		139.1
Depreciation and amortization	66.8	62.1		59.3
Taxes, other than income taxes	38.1	37.1		34.8
Total Operating Expenses	396.5	377.0		352.1
Operating Income	112.6	117.0		102.9
Interest Expense, Net	21.3	20.2		20.6
Other (Expense) Income, Net	0.4	2.0		5.4
Income Before Income Taxes	91.7	98.8		87.7
Income Tax Expense	23.2	25.0		22.0
Net Income	68.5	73.8		65.7
Operating Revenues	509.1	494.0		455.0
Weighted Average Number of Common Shares Outstanding:
Operating Revenues	$ 509.1	$ 494.0		$ 455.0

[1] Accumulated other comprehensive income (loss)

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Net Income	$ 220.8	$ 271.7	$ 88.6
Other Comprehensive Income (Loss), Before Tax:
Net hedging gain (loss) arising during the period	56.7	61.2	(8.9)
Amounts reclassified into net income	(1.2)	(1.3)	(3.2)
Net gain (loss) on cash flow hedging derivative instruments	55.5	59.9	(12.1)
Net gain (loss) on defined benefit pension and other postretirement plans	1.5	(1.3)	(0.5)
Net unrealized loss on available-for-sale debt securities	(0.4)	(0.2)	0.0
Other Comprehensive Income (Loss), Before Tax	56.6	58.4	(12.6)
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income (Loss)	13.0	13.6	(2.7)
Other Comprehensive Income (Loss), Net of Tax	43.6	44.8	(9.9)
Comprehensive Income	$ 264.4	$ 316.5	$ 78.7

XML

Consolidated Balance Sheets - USD ($) $ in Millions		Sep. 30, 2022	Sep. 30, 2021
ASSETS
Utility Plant		$ 7,664.9	$ 7,225.0
Less: Accumulated depreciation and amortization		2,294.5	2,169.3
Net Utility Plant		5,370.4	5,055.7
Non-utility Property (net of accumulated depreciation and amortization of $50.7 and $32.1 at September 30, 2022 and 2021, respectively)		491.4	471.1
Other Investments		87.8	83.1
Total Other Property and Investments		579.2	554.2
Other Property and Investments		579.2	554.2
Current Assets:
Cash and cash equivalents		6.5	4.3
Utility		210.8	338.4
Other		443.8	288.2
Allowance for credit losses		(31.9)	(30.3)
Delayed customer billings		21.3	9.2
Accounts receivable:
Utility		210.8	338.4
Other		443.8	288.2
Allowance for credit losses		(31.9)	(30.3)
Delayed customer billings		21.3	9.2
Inventories:
Natural gas		371.8	267.7
Propane gas		8.6	8.7
Materials and supplies		41.9	28.6
Regulatory assets		355.4	306.5
Prepayments		41.1	29.0
Other current assets		122.7	66.2
Total Current Assets		1,592.0	1,316.5
Deferred Charges and Other Assets:
Goodwill		1,171.6	1,171.6
Regulatory assets		1,112.4	993.5
Other		258.1	264.9
Total Deferred Charges and Other Assets		2,542.1	2,430.0
Total Assets		10,083.7	9,356.4
Capitalization:
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.5 million issued and outstanding at September 30, 2022, and 51.7 million shares issued and outstanding at September 30, 2021)		52.5	51.7
Paid-in capital		1,571.3	1,517.9
Retained earnings		905.5	843.0
Accumulated other comprehensive income (loss)		47.2	3.6
Total Shareholders' Equity		2,818.5	2,658.2
Temporary equity		13.1	9.8
Long-term debt (less current portion)		2,958.5	2,939.1
Total Capitalization		5,790.1	5,607.1
Current Liabilities:
Current portion of long-term debt		281.2	55.8
Notes payable		1,037.5	672.0
Accounts payable		617.4	409.9
Advance customer billings		18.7	32.1
Wages and compensation accrued		50.2	59.5
Customer deposits		28.2	28.9
Taxes accrued		90.1	78.8
Regulatory liabilities		3.7	34.6
Other current liabilities		226.6	236.7
Total Current Liabilities		2,353.6	1,608.3
Deferred Credits and Other Liabilities:
Deferred income taxes		675.1	612.3
Pension and postretirement benefit costs		163.0	235.9
Asset retirement obligations		520.9	519.6
Regulatory liabilities		418.2	620.9
Other noncurrent liabilities		162.8	152.3
Total Deferred Credits and Other Liabilities		1,940.0	2,141.0
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities		10,083.7	9,356.4
Depositary Shares [Member]
Capitalization:
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at September 30, 2022 and 2021)		242.0	242.0
Spire Missouri [Member]
ASSETS
Utility Plant		4,550.4	4,266.6
Less: Accumulated depreciation and amortization		982.1	905.1
Net Utility Plant		3,568.3	3,361.5
Total Other Property and Investments		58.9	60.2
Other Property and Investments		58.9	60.2
Current Assets:
Utility		131.5	279.0
Associated companies		3.7	4.7
Other		44.5	57.5
Allowance for credit losses		(24.9)	(22.6)
Delayed customer billings		16.1	2.4
Accounts receivable:
Utility		131.5	279.0
Other		44.5	57.5
Allowance for credit losses		(24.9)	(22.6)
Delayed customer billings		16.1	2.4
Associated companies		3.7	4.7
Inventories:
Natural gas		215.3	176.7
Propane gas		8.6	8.7
Materials and supplies		22.0	15.0
Regulatory assets		288.1	276.3
Prepayments		23.3	19.7
Other current assets		0.0	0.1
Total Current Assets		728.2	817.5
Deferred Charges and Other Assets:
Goodwill		210.2	210.2
Regulatory assets		547.6	483.1
Other		105.0	125.6
Total Deferred Charges and Other Assets		862.8	818.9
Total Assets		5,218.2	5,058.1
Capitalization:
Common stock (par value $1.00 per share; 70.0 million shares authorized; 52.5 million issued and outstanding at September 30, 2022, and 51.7 million shares issued and outstanding at September 30, 2021)		0.1	0.1
Paid-in capital		816.1	765.0
Retained earnings		931.9	817.0
Accumulated other comprehensive income (loss)		(2.7)	(4.2)
Total Shareholders' Equity	[1]	1,745.4	1,577.9
Long-term debt (less current portion)		1,387.7	1,338.4
Total Capitalization		3,133.1	2,916.3
Current Liabilities:
Current portion of long-term debt		250.0	0.0
Notes payable		0.0	250.0
Accounts payable		119.0	89.7
Advance customer billings		7.0	19.7
Wages and compensation accrued		33.8	40.3
Customer deposits		6.5	8.0
Taxes accrued		50.4	41.2
Regulatory liabilities		0.0	17.1
Other current liabilities		45.6	47.4
Total Current Liabilities		970.9	764.5
Notes payable – associated companies		445.3	240.9
Accounts payable – associated companies		13.3	10.2
Deferred Credits and Other Liabilities:
Deferred income taxes		500.1	480.0
Pension and postretirement benefit costs		115.5	159.5
Asset retirement obligations		110.6	143.4
Regulatory liabilities		331.8	538.8
Other noncurrent liabilities		56.2	55.6
Total Deferred Credits and Other Liabilities		1,114.2	1,377.3
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities		5,218.2	5,058.1
Spire Alabama Inc [Member]
ASSETS
Utility Plant		2,732.6	2,586.5
Less: Accumulated depreciation and amortization		1,184.1	1,124.8
Net Utility Plant		1,548.5	1,461.7
Current Assets:
Cash and cash equivalents		2.4	0.0
Utility		69.9	49.8
Associated companies		1.3	0.6
Other		6.5	6.4
Allowance for credit losses		(6.3)	(6.6)
Delayed customer billings		4.8	6.7
Accounts receivable:
Utility		69.9	49.8
Other		6.5	6.4
Allowance for credit losses		(6.3)	(6.6)
Delayed customer billings		4.8	6.7
Associated companies		1.3	0.6
Inventories:
Natural gas		72.5	35.5
Materials and supplies		16.3	10.8
Regulatory assets		56.9	18.8
Prepayments		5.8	5.4
Total Current Assets		230.1	127.4
Deferred Charges and Other Assets:
Regulatory assets		538.2	483.3
Other		81.3	63.9
Total Deferred Charges and Other Assets		630.5	581.4
Total Assets		2,409.1	2,170.5
Deferred income tax		11.0	34.2
Capitalization:
Retained earnings		589.1	552.6
Total Shareholders' Equity		906.0	881.5
Long-term debt (less current portion)		571.5	571.2
Total Capitalization		1,477.5	1,452.7
Common stock and paid-in capital (par value $0.01 per share; 3,000,000 shares authorized; 1,972,052 issued and outstanding at September 30, 2022 and 2021)		316.9	328.9
Current Liabilities:
Current portion of long-term debt		0.0	50.0
Accounts payable		85.6	52.3
Advance customer billings		9.9	11.2
Wages and compensation accrued		7.6	9.3
Customer deposits		19.0	18.4
Taxes accrued		31.3	30.4
Regulatory liabilities		0.0	13.4
Other current liabilities		22.4	17.3
Total Current Liabilities		441.1	257.3
Notes payable – associated companies		260.9	49.0
Accounts payable – associated companies		4.4	6.0
Deferred Credits and Other Liabilities:
Pension and postretirement benefit costs		40.5	66.7
Asset retirement obligations		398.7	362.8
Regulatory liabilities		23.0	23.4
Other noncurrent liabilities		28.3	7.6
Total Deferred Credits and Other Liabilities		490.5	460.5
Commitments and Contingencies (Note 16)
Total Capitalization and Liabilities		$ 2,409.1	$ 2,170.5

[1] Accumulated other comprehensive income (loss)

XML

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Non-utility property, accumulated depreciation and amortization	$ 50.7	$ 32.1
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	70,000,000.0	70,000,000.0
Common stock, shares issued (in shares)	52,500,000	51,700,000
Common Stock, shares outstanding (in shares)	52,500,000	51,700,000
Spire Missouri [Member]
Preferred stock, shares authorized (in shares)	1,480,000	1,480,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	50,000,000.0	50,000,000.0
Common stock, shares issued (in shares)	25,325	24,577
Common Stock, shares outstanding (in shares)	25,325	24,577
Spire Alabama Inc [Member]
Preferred stock, shares authorized (in shares)	120,000	120,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	3,000,000	3,000,000
Common stock, shares issued (in shares)	1,972,052	1,972,052
Common Stock, shares outstanding (in shares)	1,972,052	1,972,052
Depositary Shares [Member]
Preferred stock, par value (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, shares authorized (in shares)	10,000,000.0	10,000,000.0
Preferred stock, shares issued (in shares)	10,000,000.0	10,000,000.0
Preferred stock, shares outstanding (in shares)	10,000,000.0	10,000,000.0

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Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	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]		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]	Common Stock Issued [Member] Common Stock [Member]	Common Stock Issued [Member] Preferred Stock [Member]	Common Stock Issued [Member] Additional Paid-in Capital [Member]	Common Stock Issued [Member] Retained Earnings [Member]	Common Stock Issued [Member] AOCI Attributable to Parent [Member]	[1]	Common Stock Issued [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, 2019	24,577						1,972,052											50,973,515
Balance at Sep. 30, 2019	$ 0.1	$ 765.0	$ 576.6	$ (2.4)	$ 1,339.3	[1]	$ 0.0	$ 370.9	$ 459.1	$ 830.0								$ 51.0	$ 242.0	$ 1,505.8	$ 775.5	$ (31.3)	[1]	$ 2,543.0
Net Income	0.0	0.0	130.2	0.0	130.2	[1]	0.0	0.0	65.7	65.7								$ 0.0	0.0	0.0	88.6	0.0	[1]	88.6
Stock issued (in shares)											446,619
Stock issued											$ 0.4	$ 0.0	$ 31.6	$ 0.0	$ 0.0		$ 32.0
Dividend reinvestment plan (in shares)																		122,545
Dividend reinvestment plan																		$ 0.1	0.0	9.1	0.0	0.0	[1]	9.2
Stock-based compensation costs																		$ 0.0	0.0	6.0	0.0	0.0	[1]	6.0
Stock issued under stock-based compensation plans (in shares)																		110,463
Stock issued under stock-based compensation plans																		$ 0.1	0.0	(0.1)	0.0	0.0	[1]	0.0
Employees’ tax withholding for stock-based compensation (in shares)																		(41,353)
Employees’ tax withholding for stock-based compensation																		$ 0.0	0.0	(3.2)	0.0	0.0	[1]	(3.2)
Temporary equity adjustment to redemption value																		0.0	0.0	0.0	3.4	0.0	[1]	3.4
Common stock dividends	0.0	0.0	(33.9)	0.0	(33.9)	[1]	0.0	0.0	(24.0)	(24.0)								0.0	0.0	0.0	(128.4)	0.0	[1]	(128.4)
Preferred stock dividends																		0.0	0.0	0.0	(18.4)	0.0	[1]	(18.4)
Other Comprehensive Income (Loss), Net of Tax	$ 0.0	0.0	0.0	(0.5)	(0.5)													$ 0.0	0.0	0.0	0.0	(9.9)		(9.9)
Return of capital to Spire							$ 0.0	(20.0)	0.0	(20.0)
Balance (in shares) at Sep. 30, 2020	24,577						1,972,052											51,611,789
Balance at Sep. 30, 2020	$ 0.1	765.0	672.9	(2.9)	1,435.1	[1]	$ 0.0	350.9	500.8	851.7								$ 51.6	242.0	1,549.2	720.7	(41.2)	[1]	2,522.3
Balance (in shares) at Sep. 30, 2019	24,577						1,972,052											50,973,515
Balance at Sep. 30, 2019	$ 0.1	765.0	576.6	(2.4)	1,339.3	[1]	$ 0.0	370.9	459.1	830.0								$ 51.0	242.0	1,505.8	775.5	(31.3)	[1]	2,543.0
Balance (in shares) at Sep. 30, 2021	24,577						1,972,052											51,684,883
Balance at Sep. 30, 2021	$ 0.1	765.0	817.0	(4.2)	1,577.9	[1]	$ 0.0	328.9	552.6	881.5								$ 51.7	242.0	1,517.9	843.0	3.6	[1]	2,658.2
Balance (in shares) at Sep. 30, 2020	24,577						1,972,052											51,611,789
Balance at Sep. 30, 2020	$ 0.1	765.0	672.9	(2.9)	1,435.1	[1]	$ 0.0	350.9	500.8	851.7								$ 51.6	242.0	1,549.2	720.7	(41.2)	[1]	2,522.3
Net Income	0.0	0.0	144.1	0.0	144.1	[1]	0.0	0.0	73.8	73.8								$ 0.0	0.0	0.0	271.7	0.0		271.7
Dividend reinvestment plan (in shares)																		24,565
Dividend reinvestment plan																		$ 0.0	0.0	1.6	0.0	0.0	[1]	1.6
Stock-based compensation costs																		$ 0.0	0.0	9.1	0.0	0.0	[1]	9.1
Stock issued under stock-based compensation plans (in shares)																		65,316
Stock issued under stock-based compensation plans																		$ 0.1	0.0	(0.1)	0.0	0.0	[1]	0.0
Employees’ tax withholding for stock-based compensation (in shares)																		(16,787)
Employees’ tax withholding for stock-based compensation																		$ 0.0	0.0	(1.1)	0.0	0.0	[1]	(1.1)
Temporary equity adjustment to redemption value																		0.0	0.0	0.0	1.3	0.0	[1]	1.3
Common stock dividends							0.0	0.0	(22.0)	(22.0)								0.0	0.0	0.0	(135.9)	0.0	[1]	(135.9)
Preferred stock dividends																		0.0	0.0	0.0	(14.8)	0.0	[1]	(14.8)
Other Comprehensive Income (Loss), Net of Tax	$ 0.0	0.0	0.0	(1.3)	(1.3)	[1]												0.0	0.0	0.0	0.0	44.8	[1]	44.8
Equity units issued																		$ 0.0	0.0	(40.8)	0.0	0.0		(40.8)
Return of capital to Spire							$ 0.0	(22.0)	0.0	(22.0)
Balance (in shares) at Sep. 30, 2021	24,577						1,972,052											51,684,883
Balance at Sep. 30, 2021	$ 0.1	765.0	817.0	(4.2)	1,577.9	[1]	$ 0.0	328.9	552.6	881.5								$ 51.7	242.0	1,517.9	843.0	3.6	[1]	2,658.2
Net Income	$ 0.0	0.0	114.9	0.0	114.9		0.0	0.0	68.5	68.5								$ 0.0	0.0	0.0	220.8	0.0		220.8
Stock issued (in shares)	748										719,625
Stock issued	$ 0.0	51.1	0.0	0.0	51.1						$ 0.7	$ 0.0	$ 49.6	$ 0.0	$ 0.0		$ 50.3
Dividend reinvestment plan (in shares)																		24,154
Dividend reinvestment plan																		$ 0.0	0.0	1.6	0.0	0.0		1.6
Stock-based compensation costs																		$ 0.0	0.0	4.1	0.0	0.0		4.1
Stock issued under stock-based compensation plans (in shares)																		93,936
Stock issued 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)																		(28,055)
Employees’ tax withholding for stock-based compensation																		$ 0.0	0.0	(1.8)	0.0	0.0		(1.8)
Common stock dividends							0.0	0.0	(32.0)	(32.0)								0.0	0.0	0.0	(143.5)	0.0		(143.5)
Preferred stock dividends																		0.0	0.0	0.0	(14.8)	0.0		(14.8)
Other Comprehensive Income (Loss), Net of Tax	$ 0.0	0.0	0.0	1.5	1.5													$ 0.0	0.0	0.0	0.0	43.6		43.6
Return of capital to Spire							$ 0.0	(12.0)	0.0	(12.0)
Balance (in shares) at Sep. 30, 2022	25,325						1,972,052											52,494,543
Balance at Sep. 30, 2022	$ 0.1	$ 816.1	$ 931.9	$ (2.7)	$ 1,745.4	[1]	$ 0.0	$ 316.9	$ 589.1	$ 906.0								$ 52.5	$ 242.0	$ 1,571.3	$ 905.5	$ 47.2	[1]	$ 2,818.5

[1] Accumulated other comprehensive income (loss)

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Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Common stock, dividends per share declared (in dollars per share)	$ 2.74	$ 2.60	$ 2.49
Preferred stock dividends per share declared (in dollars per share)	$ 1.475	$ 1.475	$ 1.84375

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Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021		Sep. 30, 2020
Operating Activities:
Net Income	$ 220.8	$ 271.7		$ 88.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	237.3	213.1		197.3
Impairments	0.0	0.0		148.6
Deferred income taxes and investment tax credits	57.9	67.0		9.0
Changes in assets and liabilities:
Accounts receivable	(26.5)	(343.0)		36.2
Inventories	(117.2)	(111.0)		2.6
Regulatory assets and liabilities	(409.0)	76.6		0.6
Accounts payable	190.7	177.7		(43.1)
Delayed/advance customer billings, net	(25.5)	(12.4)		7.0
Taxes accrued	11.2	8.9		2.9
Other assets and liabilities	(93.5)	(116.1)		12.0
Other	8.8	17.3		8.2
Net cash provided by operating activities	55.0	249.8		469.9
Delayed/advance customer billings, net	(25.5)	(12.4)		7.0
Investing Activities:
Capital expenditures	(552.2)	(624.8)		(638.4)
Other	5.5	2.8		6.8
Net cash used in investing activities	(546.7)	(622.0)		(631.6)
Financing Activities:
Issuance of long-term debt	300.0	629.1		510.0
Repayment of long-term debt	(55.8)	(115.4)		(147.0)
Issuance (repayment) of short-term debt, net	365.5	24.0		(95.2)
Issuance of common stock	51.9	1.0		41.1
Dividends paid on common stock	(141.9)	(133.2)		(128.0)
Dividends paid on preferred stock	(14.8)	(14.8)		(14.8)
Other financing activities	(4.0)	(11.3)		(6.1)
Net cash provided by financing activities	500.9	379.4		160.0
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	9.2	7.2		(1.7)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	11.3	4.1		5.8
Cash, Cash Equivalents, and Restricted Cash at End of Year	20.5	11.3		4.1
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(119.9)	(98.7)		(100.0)
Income taxes	(1.8)	(1.5)		(2.9)
Spire Missouri [Member]
Operating Activities:
Net Income	114.9	144.1	[1]	130.2	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	145.3	129.2		118.0
Deferred income taxes and investment tax credits	21.3	25.3		17.1
Changes in assets and liabilities:
Accounts receivable	163.8	(207.4)		(3.7)
Inventories	(45.4)	(79.0)		2.7
Regulatory assets and liabilities	(314.3)	35.9		27.3
Accounts payable	25.3	23.1		2.3
Delayed/advance customer billings, net	(26.4)	(13.0)		13.7
Taxes accrued	9.3	2.1		2.7
Other assets and liabilities	(48.0)	(115.0)		(6.1)
Other	1.4	0.7		0.6
Net cash provided by operating activities	47.2	(54.0)		304.8
Delayed/advance customer billings, net	(26.4)	(13.0)		13.7
Investing Activities:
Capital expenditures	(354.1)	(382.6)		(356.0)
Other	3.6	1.3		1.3
Net cash used in investing activities	(350.5)	(381.3)		(354.7)
Financing Activities:
Issuance of long-term debt	300.0	304.1		275.0
Repayment of long-term debt	0.0	(55.0)		(107.0)
Issuance (repayment) of short-term debt, net	(250.0)	250.0		0.0
Issuance of common stock	51.1	0.0		0.0
Dividends paid on common stock	0.0	0.0		(33.9)
Other financing activities	(2.2)	(3.5)		(1.6)
Net cash provided by financing activities	303.3	435.3		47.3
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	0.0	0.0		(2.6)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	0.0	0.0		2.6
Cash, Cash Equivalents, and Restricted Cash at End of Year	0.0	0.0		0.0
Borrowings from (repayments to) Spire, net	204.4	(60.3)		(85.2)
Borrowings from (repayments to) Spire, net	204.4	(60.3)		(85.2)
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(58.9)	(45.9)		(46.0)
Income taxes	0.0	0.0		0.0
Spire Alabama Inc [Member]
Operating Activities:
Net Income	68.5	73.8		65.7
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	66.8	62.1		59.3
Deferred income taxes and investment tax credits	23.2	25.0		22.0
Changes in assets and liabilities:
Accounts receivable	(21.2)	(17.8)		7.3
Inventories	(42.5)	(15.4)		11.9
Regulatory assets and liabilities	(101.7)	29.2		(23.5)
Accounts payable	26.3	14.0		(15.1)
Delayed/advance customer billings, net	0.5	0.5		(6.6)
Taxes accrued	0.8	2.5		0.6
Other assets and liabilities	(3.7)	(37.8)		18.9
Other	0.2	0.3		0.2
Net cash provided by operating activities	17.2	136.4		140.7
Delayed/advance customer billings, net	0.5	0.5		(6.6)
Investing Activities:
Capital expenditures	(141.5)	(169.8)		(150.4)
Other	0.8	0.7		1.6
Net cash used in investing activities	(140.7)	(169.1)		(148.8)
Financing Activities:
Issuance of long-term debt	0.0	150.0		100.0
Repayment of long-term debt	(50.0)	0.0		(40.0)
Dividends paid on common stock	(24.0)	(22.0)		(24.0)
Other financing activities	0.0	(0.9)		(0.5)
Net cash provided by financing activities	125.9	32.7		8.1
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash	2.4	0.0		0.0
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	0.0	0.0		0.0
Cash, Cash Equivalents, and Restricted Cash at End of Year	2.4	0.0		0.0
Borrowings from (repayments to) Spire, net	211.9	(72.4)		(7.4)
Borrowings from (repayments to) Spire, net	211.9	(72.4)		(7.4)
Return of capital to Spire	(12.0)	(22.0)		(20.0)
Supplemental disclosure of cash paid for:
Interest, net of amounts capitalized	(21.0)	(17.9)		(19.0)
Income taxes	$ 0.0	$ 0.0		$ 0.0

[1] Accumulated other comprehensive income (loss)

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Note 1 - Summary of Significant Accounting Policies

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Significant Accounting Policies [Text Block]

BASIS OF PRESENTATION – These notes are an integral part of the accompanying audited 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.” Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

The accompanying audited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). 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.

NATURE OF OPERATIONS – Spire has two reportable segments: Gas Utility and Gas Marketing. 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 primary gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The activities of the Company’s other subsidiaries are reported as Other and are described in Note 14, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment.

USE OF ESTIMATES – The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

SYSTEM OF ACCOUNTS – The accounts of the Utilities are maintained in accordance with the Uniform System of Accounts prescribed by the applicable state public service commissions, which systems substantially conform to that prescribed by the Federal Energy Regulatory Commission (FERC).

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. See additional discussion on regulated operations in Note 15, Regulatory Matters.

PROPERTY, PLANT, AND EQUIPMENT –

Utility Plant – Utility plant is stated at original cost. The cost of additions to utility plant includes contracted work, direct labor and materials, allocable overheads and an allowance for funds used during construction. The costs of units of property retired, replaced or renewed are removed from utility plant and are charged to accumulated depreciation. Maintenance and repairs of property and replacement and renewal of items determined to be less than units of property are charged to maintenance expenses.

Utility plant is depreciated using the composite method on a straight-line basis over the estimated service lives of the various classes of property at rates approved by the applicable regulatory commission. For Spire Missouri and for Spire Alabama, the annual depreciation and amortization expense in fiscal years 2022, 2021 and 2020 averaged approximately 3% of the original cost of depreciable and amortizable property.

Non-utility Property – Non-utility property is recorded at the original cost of acquisition or construction, which includes material, labor, contractor services and, for FERC-regulated projects, an allowance for funds used during construction. Repairs, replacements and renewals of items of property determined to be less than a unit of property or that do not increase the property’s life or functionality are charged to maintenance expense. Upon retirement or sale of non-utility property, the original cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in the income statements. Costs related to software developed or obtained for internal use are capitalized and amortized on a straight-line basis over the estimated useful life of the related software. If software is retired prior to being fully amortized, the difference is recorded as a loss in the income statements.

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

September 30	2022		2021		2020
Spire	$	77.8	$	59.5	$	67.6
Spire Missouri		45.6		37.1		34.3
Spire Alabama		19.2		13.6		17.0

ASSET RETIREMENT OBLIGATIONS – Spire, Spire Missouri and Spire Alabama record legal obligations associated with the retirement of long-lived assets in the period in which the obligations are incurred, if sufficient information exists to reasonably estimate the fair value of the obligations. Obligations are recorded as both a cost of the related long-lived asset and as a corresponding liability. Subsequently, the asset retirement costs are depreciated over the life of the asset and the asset retirement obligations are accreted to the expected settlement amounts. The Company, Spire Missouri and Spire Alabama record asset retirement obligations associated with certain safety requirements to purge and seal gas distribution mains upon retirement, the plugging and abandonment of storage wells and other storage facilities, specific service line obligations, and certain removal and disposal obligations related to components of Spire Missouri’s, Spire Alabama’s and Spire Gulf’s distribution systems and general plant. Asset retirement obligations recorded by Spire’s other subsidiaries are not material. As authorized by the Missouri Public Service Commission (MoPSC) and the Alabama Public Service Commission (APSC), Spire Missouri, Spire Alabama and Spire Gulf accrue future asset removal costs associated with their property, plant and equipment even if a legal obligation does not exist. Such accruals are provided for through depreciation expense and are recorded with corresponding credits to regulatory liabilities or regulatory assets. When those utilities retire depreciable utility plant and equipment, they charge the associated original costs to accumulated depreciation and amortization, and any related removal costs incurred are charged to regulatory liabilities or regulatory assets. The difference between removal costs recognized in depreciation rates and the accretion expense and depreciation expense recognized for financial reporting purposes is a timing difference between recovery of these costs in rates and their recognition for financial reporting purposes. Accordingly, these differences are deferred as regulatory liabilities or regulatory assets. In the rate setting process, the regulatory liabilities or regulatory assets are excluded from the rate base upon which those utilities have the opportunity to earn their allowed rates of return.

The following table presents a reconciliation of the beginning and ending balances of asset retirement obligations at September 30, as reported in the balance sheets.

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Asset retirement obligations, beginning of year	$	519.6		$	540.1		$	143.4		$	153.4		$	362.8		$	374.3
Liabilities incurred during the period		3.2			11.1			1.2			1.4			0.5			7.4
Liabilities settled during the period		(9.2	)		(21.9	)		(4.1	)		(9.7	)		(2.0	)		(10.7	)
Accretion		21.1			21.8			5.9			6.2			14.7			15.0
Revisions in estimated cash flows		(13.8	)		(31.5	)		(35.8	)		(7.9	)		22.7			(23.2	)
Asset retirement obligations, end of year	$	520.9		$	519.6		$	110.6		$	143.4		$	398.7		$	362.8

NATURAL GAS AND PROPANE GAS – For Spire Missouri’s eastern region, inventory of natural gas in storage is priced on a last in, first out (LIFO) basis and inventory of propane gas in storage is priced on a first in, first out (FIFO) basis. For the rest of the Gas Utility segment, inventory of natural gas in storage is priced on the weighted average cost basis. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2022 was more than the LIFO cost by $37.3. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2021 was less than the LIFO cost by $14.0. The carrying value of the Utilities’ inventory is never adjusted to a lower net realizable value or market value because, pursuant to Purchased Gas Adjustment (PGA) clauses or a Gas Supply Adjustment (GSA) rider, actual gas costs are recovered in customer rates. Natural gas and propane gas storage inventory in Spire’s other operating segments is recorded at the lower of average cost or net realizable value.

BUSINESS COMBINATIONS AND GOODWILL – Spire’s acquisitions were accounted for using business combination accounting. Under this method, the purchase price paid by the acquirer is allocated to the assets acquired and liabilities assumed as of the acquisition date based on their fair value. Goodwill is measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. At September 30, 2022, goodwill included in Spire’s Gas Utility and Gas Marketing segments was $210.2 and zero, respectively, with the remainder held at the corporate level. Goodwill amounts have not changed since fiscal 2017, and there are no accumulated impairment losses. Spire and Spire Missouri evaluate goodwill for impairment as of July 1 of each year, or more frequently if events and circumstances indicate that goodwill might be impaired. At each test date, the assessments concluded that goodwill was not impaired. The Company updated the assessments as of September 30, 2022, determining that it remained more likely than not that the fair value of each reporting unit exceeded its carrying value.

IMPAIRMENT OF LONG-LIVED ASSETS – Long-lived assets classified as held and used are evaluated for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Whether impairment has occurred is determined by comparing the estimated undiscounted cash flows attributable to the assets with the carrying value of the assets. If the carrying value exceeds the undiscounted cash flows, the Company recognizes an impairment charge equal to the amount of the carrying value that exceeds the estimated fair value of the assets. In the period in which the Company determines an asset meets held-for-sale criteria, an impairment charge is recorded to the extent the book value exceeds its fair value less cost to sell.

On July 1, 2020, Spire’s Board of Directors, based upon the recommendation of senior management, revised the development plan for Spire Storage, resulting in an impairment charge of $140.8 related to Spire Storage assets (non-utility property on the balance sheet) in the quarter ended June 30, 2020. The revision was driven by the realization that a longer time horizon will be required for optimization and positioning of the storage facility to serve energy markets in the western United States. Among other factors, evaluations of the continuing evolution of market dynamics in the region led management to update models of various development alternatives. Separately in the quarter ended June 30, 2020, Spire recorded impairment charges totaling $7.8 related to two commercial compressed natural gas fueling stations (also non-utility property) as a result of revised projections reflecting lower diesel prices and slower conversions of Class 8 vehicles. The fair values used in measuring the impairment charges were determined with an expected present value technique using a discounted cash flow method under an income approach. In the quarter ended September 30, 2021, Spire sold one of the fueling stations and recorded a gain of $1.3.

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 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. Refer to Note 10, Derivative Instruments and Hedging Activities, for more information about derivatives.

INCOME TAXES – Spire and its subsidiaries account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amount of existing assets and liabilities and the respective tax basis and for tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. The effects on deferred tax assets and liabilities of a change in enacted tax rates is recognized in income or loss for non-regulated operations, and in a regulatory asset or regulatory liability for regulated operations. A valuation allowance is established when it is more likely than not that some portion or all of the deferred tax assets will not be realized.

The Company accounts for uncertain tax positions in accordance with authoritative guidance. The authoritative guidance addresses the determination of whether tax benefits claimed, or expected to be claimed, on a tax return should be recorded in the financial statements. Spire may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the position will be sustained upon examination by the taxing authority, based on the technical merits of the position. Tax-related interest and penalties, if any, are classified as a liability on the balance sheets. For additional information on the accounting for income taxes, refer to Note 12, Income Taxes.

CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – All highly liquid debt instruments purchased with original maturities of three months or less are considered to be cash equivalents. Such instruments are carried at cost, which approximates market value. Outstanding checks on the Company’s and Utilities’ bank accounts in excess of funds on deposit create book overdrafts (which are funded at the time checks are presented for payment) and are classified as Other in the Current Liabilities section of the balance sheets. Changes in book overdrafts are reflected as Operating Activities in the statements of cash flows. In Spire’s statements of cash flows, total Cash, Cash Equivalents, and Restricted Cash included $14.0 and $7.0 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of September 30, 2022 and 2021, 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.

NATURAL GAS RECEIVABLE – Spire Marketing enters into natural gas transactions with natural gas pipeline and storage companies known as park and loan arrangements. Under the terms of the arrangements, Spire Marketing purchases natural gas from a third party and delivers that natural gas to the pipeline or storage company for the right to receive the same quantity of natural gas from that company at the same location in a future period. These arrangements are accounted for as non-monetary transactions under GAAP and are recorded at the carrying amount. As such, natural gas receivables are reflected in “Other” current assets on the Consolidated Balance Sheets at cost, which includes related fees associated with the transactions. In the period that the natural gas is returned to Spire Marketing, concurrent with the sale of the natural gas to a third party, the related natural gas receivable is expensed in the Consolidated Statements of Income. In conjunction with these transactions, Spire Marketing usually enters into New York Mercantile Exchange (NYMEX) and Intercontinental Exchange (ICE) natural gas futures, options, and swap contracts or fixed price sales agreements to protect against market changes in future sales prices.

EARNINGS PER COMMON SHARE – GAAP requires dual presentation of basic and diluted earnings per share (EPS). EPS is computed using the two-class method, which is an earnings allocation method for computing EPS that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Certain of the Company’s stock-based compensation awards pay non-forfeitable dividends to the participants during the vesting period and, as such, are deemed participating securities. Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding that are increased for additional shares that would be outstanding if potentially dilutive non-participating securities were converted to common shares, pursuant to the treasury stock method. Shares attributable to equity units, non-participating stock options and time-vested restricted stock/units are excluded from the calculation of diluted earnings per share if the effect would be antidilutive. Shares attributable to non-participating performance-contingent restricted stock awards are only included in the calculation of diluted earnings per share to the extent the underlying performance and/or market conditions are satisfied (a) prior to the end of the reporting period or (b) would be satisfied if the end of the reporting period were the end of the related contingency period and the result would be dilutive. The Company’s EPS computations are presented in Note 4, Earnings Per Common Share.

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

	Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020
Natural gas purchases from Spire Marketing	$	86.3	$	92.5	$	56.9	$	3.2	$	10.4	$	6.3
Natural gas sales to Spire Marketing		—		1.1		0.1		0.5		0.1		0.3
Transportation services from Spire STL Pipeline LLC		32.0		32.0		27.9		—		—		—
Transportation services from Spire NGL Inc.		—		0.5		1.0		—		—		—

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 estimates for expected credit losses were increased as a result of considerations related to the outbreak of COVID-19 in 2020, including trends from previous economic downturns, the effects of moratoriums on gas service cutoffs, and the effects of slower-than-normal disconnection activity in general, offset by the amount subject to specific recovery under Missouri’s deferral order (see Note 15, Regulatory Matters). 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
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Allowance at beginning of year	$	30.3		$	24.9		$	23.0		$	22.6		$	18.1		$	14.9		$	6.6		$	5.5		$	6.3
Provision for expected credit losses		11.6			14.7			14.0			11.2			11.1			12.7			0.3			3.1			0.9
Write-offs, net of recoveries		(10.0	)		(9.3	)		(12.1	)		(8.9	)		(6.6	)		(9.5	)		(0.6	)		(2.0	)		(1.7	)
Allowance at end of year	$	31.9		$	30.3		$	24.9		$	24.9		$	22.6		$	18.1		$	6.3		$	6.6		$	5.5

FINANCE RECEIVABLES – Spire Alabama finances third party contractor sales of merchandise including gas furnaces and appliances. At September 30, 2022 and 2021, Spire Alabama’s finance receivable totaled approximately $7.1 and $7.8, respectively. Financing is available only to qualified customers who meet creditworthiness thresholds for customer payment history and external agency credit reports. Spire Alabama relies upon ongoing payments as the primary indicator of credit quality during the term of each contract. The allowance for credit losses is recognized using an estimate of write-off percentages based on historical experience. Delinquent accounts are evaluated on a case-by-case basis and, absent evidence of debt repayment, after 90 days are due in full and assigned to a third-party collection agency. The remaining finance receivable is written off approximately 12 months after being assigned to the third-party collection agency. Spire Alabama had finance receivables past due 90 days or more of $0.3 at September 30, 2022 and 2021.

GROUP MEDICAL AND WORKERS’ COMPENSATION RESERVES – The Company self-insures its group medical and workers’ compensation costs and carries stop-loss coverage in relation to medical claims and workers’ compensation claims. Reserves for amounts incurred but not reported are established based on historical cost levels and lags between occurrences and reporting.

FAIR VALUE MEASUREMENTS – Certain assets and liabilities are recognized or disclosed at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.

The levels of the hierarchy are described below:

• Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

• Level 2 – Pricing inputs other than quoted prices included within Level 1, which are either directly or indirectly observable for the asset or liability as of the reporting date. These inputs are derived principally from, or corroborated by, observable market data.

• Level 3 – Pricing that is based upon inputs that are generally unobservable that are based on the best information available and reflect management’s assumptions about how market participants would price the asset or liability.

Assessment of the significance of a particular input to the fair value measurements may require judgment and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. Additional information about fair value measurements is provided in Note 8, Fair Value of Financial Instruments, Note 9, Fair Value Measurements, and Note 13, Pension Plans and Other Postretirement Benefits.

STOCK-BASED COMPENSATION – The Company accounts for share-based compensation arrangements in accordance with ASC Topic 718, Compensation - Stock Compensation. The Company measures stock-based compensation awards at fair value at the date of grant and recognizes the compensation cost of the awards over the requisite service period. Forfeitures are recognized in the period they occur. Refer to Note 3, Stock-Based Compensation, for further discussion of the accounting for the Company’s stock-based compensation plans.

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Note 2 - Revenue

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Revenue from Contract with Customer [Text Block]

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

	2022			2021			2020
Spire
Gas Utility:
Residential	$	1,416.6		$	1,234.0		$	1,184.3
Commercial & industrial		338.9			586.0			383.0
Transportation		118.0			122.9			115.8
Off-system & other incentive		42.0			152.7			38.4
Other customer revenue		19.9			22.2			26.2
Total revenue from contracts with customers		1,935.4			2,117.8			1,747.7
Changes in accrued revenue under alternative revenue programs		10.7			1.5			4.3
Total Gas Utility operating revenues		1,946.1			2,119.3			1,752.0
Gas Marketing		234.9			96.5			87.9
Other		69.2			67.7			57.8
Total before eliminations		2,250.2			2,283.5			1,897.7
Intersegment eliminations (see Note 14, Information by Operating Segment)		(51.7	)		(48.0	)		(42.3	)
Total Operating Revenues	$	2,198.5		$	2,235.5		$	1,855.4
Spire Missouri
Residential	$	1,061.4		$	882.1		$	859.6
Commercial & industrial		177.2			436.1			241.4
Transportation		33.3			33.5			32.9
Off-system & other incentive		25.2			145.6			35.1
Other customer revenue		11.1			16.3			22.3
Total revenue from contracts with customers		1,308.2			1,513.6			1,191.3
Changes in accrued revenue under alternative revenue programs		12.8			3.0			2.3
Total Operating Revenues	$	1,321.0		$	1,516.6		$	1,193.6
Spire Alabama
Residential	$	291.6		$	288.0		$	267.8
Commercial & industrial		119.1			114.9			109.4
Transportation		74.4			78.7			72.9
Off-system & other incentive		16.8			7.1			3.2
Other customer revenue		5.5			1.9			1.9
Total revenue from contracts with customers		507.4			490.6			455.2
Changes in accrued revenue under alternative revenue programs		1.7			3.4			(0.2	)
Total Operating Revenues	$	509.1		$	494.0		$	455.0

The Utilities sell natural gas to residential and other customers. The sale of natural gas is governed by the various state utility commissions, which set rates, charges, and terms and conditions of service, collectively included in a “tariff.” The performance obligation, which relates to the promise to provide natural gas, is satisfied over time as the customer simultaneously receives and consumes the natural gas, and revenue is recognized accordingly.

The Utilities’ transportation revenue relates to the promise to transport the specified quantities of natural gas at tariff rates. This performance obligation is satisfied over time as the gas is transported, and revenue is recognized as invoiced monthly.

The Utilities have alternative revenue programs (ARPs), which represent an agreement between the utility and its regulator, currently consisting of decoupling mechanisms (also known as weather normalization adjustments) and incentive programs (primarily Alabama’s Cost Control Measure). When the criteria to recognize additional (or reduced) revenue from ARPs have been met, the Utilities establish a regulatory asset (or liability). When amounts previously recognized for ARPs are billed, the Utilities reduce the regulatory asset (or liability) and increase (or decrease) accounts receivable. Billed amounts, which are part of the overall tariff paid by customers, are included in revenue from contracts with customers, while the change in the related regulatory asset or liability is presented as revenue from ARPs. Depending on whether the beginning accrued ARP balance was a regulatory asset or liability and depending on the size and direction of the current period accrual, the amount presented as revenue from ARPs could be negative.

The Utilities read meters and bill customers on monthly cycles. Spire Missouri, Spire Gulf and Spire Mississippi record their gas utility revenues from gas sales and transportation services on an accrual basis that includes estimated amounts for gas delivered but not yet billed. The accruals for unbilled revenues are reversed in the subsequent accounting period when meters are actually read and customers are billed. Spire Alabama records natural gas distribution revenues in accordance with the tariff established by the APSC. Unbilled revenue is accrued in an amount equal to the related gas cost, as profit margin is not considered earned until billed. Spire’s other subsidiaries, including Spire Marketing, record revenues when earned, as the product is delivered or as services are performed.

Gas Marketing’s contracts are derivatives. Wholesale contracts (with producers, municipalities, and utility companies) are subject to derivative accounting. Retail contracts (with large commercial and industrial customers) are designated as “normal purchase, normal sale” arrangements and are therefore accounted for as revenue from contracts with customers. The performance obligation is satisfied over time by the transfer of control of natural gas to the customer, and revenue is recognized as invoiced monthly.

Payments are generally required within 30 days of billing, and contracts generally do not have a significant financing component. Spire’s revenues are not subject to significant returns, refunds, or warranty obligations.

Spire, Spire Missouri, and Spire Alabama have elected to apply a “right to invoice” practical expedient, recognizing revenue for volumes delivered for which they have a right to invoice, as long as that amount corresponds with the value to the customer. Disclosures about remaining performance obligations are not required because either contracts have an original expected duration of one year or less, or revenue is recognized under the right to invoice practical expedient, or both.

Sales taxes imposed on applicable Spire Alabama and Spire Missouri sales are billed to customers. These amounts are not recorded in the statements of income but are recorded as tax collections payable and included in the “Other” line of the Current Liabilities section of the balance sheets.

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.”

	2022		2021		2020
Spire	$	109.8	$	94.0	$	91.5
Spire Missouri		79.6		64.3		63.5
Spire Alabama		25.5		25.1		23.3

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Note 3 - Stock-based Compensation

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Share-Based Payment Arrangement [Text Block]

The Spire 2015 Equity Incentive Plan (EIP) was approved by shareholders of Spire on January 29, 2015 and amended on November 9, 2018. The purpose of the EIP is to encourage directors, officers, and key employees of the Company and its subsidiaries to contribute to the Company’s success and align their interests with that of shareholders. To accomplish this purpose, the Compensation Committee (“Committee”) of Spire’s Board of Directors (the “Board”) may grant awards under the EIP that may be earned by achieving performance objectives and/or other criteria as determined by the Committee. Under the terms of the EIP, officers and employees of the Company and its subsidiaries, as determined by the Committee, are eligible to be selected for awards. The EIP provides for restricted stock, restricted stock units, qualified and non-qualified stock options, stock appreciation rights, and performance shares payable in stock, cash, or a combination of both. The EIP generally provides a minimum vesting period of at least three years for each type of award, with pro rata vesting permitted during the minimum three-year vesting period. The maximum number of shares reserved for issuance under the EIP is 1,000,000.

The Company issues new shares to satisfy employee restricted stock awards.

Restricted Stock Awards

During fiscal 2022, the Company granted 128,396 performance-contingent restricted share units to executive officers and key employees at a weighted average grant date fair value of $67.43 per share. This number represents the target shares that can be earned pursuant to the terms of the awards. The share units have a performance period ending September 30, 2025. While the participants have no interim voting rights on these share units, dividends accrue during the performance period and are paid to the participants upon vesting but are subject to forfeiture if the underlying share units do not vest.

The number of share units that will ultimately vest is dependent upon the attainment of certain levels of earnings and other strategic goals, as well as the Company’s level of total shareholder return (TSR) during the performance period relative to a comparator group of peer companies. This TSR provision is considered a market condition under GAAP and is discussed further below. The maximum amount of shares that can be earned pursuant to the terms of the awards is 200% of the target units granted.

The weighted average grant date fair value of performance-contingent restricted share units granted during fiscal years 2021 and 2020 was $68.69 and $76.19 per share, respectively.

Fiscal 2022 activity of restricted stock units subject to performance and/or market conditions is presented below:

				Weighted
				Average
				Grant Date
				Fair Value
	Units			Per Unit
Nonvested at September 30, 2021		312,596		$	74.33
Granted		128,396		$	67.43
Vested		(91,111	)	$	79.40
Forfeited		(6,357	)	$	69.43
Nonvested at September 30, 2022		343,524		$	70.14

For the year ended September 30, 2022, the total number of shares that could be issued if all outstanding award grants attain maximum performance payout is 687,048.

During fiscal 2022, the Company granted 62,945 shares of time-vested restricted stock to executive officers and key employees at a weighted average grant date fair value of $63.57 per share. Unless forfeited based on terms of the agreements, these shares will vest in fiscal 2025. In the interim, participants receive full voting rights and dividends, which are not subject to forfeiture. The weighted average grant date fair value of time-vested restricted stock and restricted stock units awarded to employees during fiscal years 2021 and 2020 was $64.29 and $76.13 per share, respectively.

During fiscal 2022, the Company granted 16,290 shares of time-vested restricted stock to non-employee directors at a weighted average grant date fair value of $66.31 per share. These shares vested in fiscal 2022, six months after the grant date. The weighted average grant date fair value of restricted stock awarded to non-employee directors during fiscal years 2021 and 2020 was $62.35 and $84.58 per share, respectively.

Time-vested restricted stock and stock unit activity for fiscal 2022 is presented below:

				Weighted
				Average
				Grant Date
	Shares/			Fair Value
	Units			Per Share
Nonvested at September 30, 2021		110,300		$	70.98
Granted		62,945		$	63.57
Vested		(46,970	)	$	72.67
Forfeited		(4,030	)	$	68.62
Nonvested at September 30, 2022		122,245		$	66.60

For restricted stock and stock units (performance-contingent and time-vested) that vested during fiscal years 2022, 2021, and 2020, the Company withheld 28,055 shares, 16,787 shares, and 41,353 shares, respectively, at weighted average prices of $63.97, $65.99 and $77.07 per share, respectively, pursuant to elections by employees to satisfy tax withholding obligations. The total fair value of restricted stock (performance-contingent and time-vested) that vested during fiscal years 2022, 2021, and 2020 was $10.1, $6.5, and $9.8, respectively, and the related tax benefit was $3.8, $2.5, and $3.7, respectively. None of the tax benefits have been realized.

The Company allows participants in the EIP the ability to defer a portion or all of their award. As at September 30, 2022, a total of 228,988 shares (at target payout) have been deferred by Participants.

Equity Compensation Costs

Compensation cost for performance-contingent restricted stock and stock unit awards is based upon the probable outcome of the performance conditions. For shares or units that do not vest or that are not expected to vest due to the outcome of the performance conditions (excluding market conditions), no compensation cost is recognized and any previously recognized compensation cost is reversed.

The fair value of awards of performance-contingent and time-vested restricted stock and restricted stock units, not subject to the TSR provision, are estimated using the closing price of the Company’s stock on the grant date. For those awards that do not pay dividends during the vesting period, the estimate of fair value is reduced by the present value of the dividends expected to be paid on the Company’s common stock during the performance period, discounted using an appropriate U.S. Treasury yield. For shares subject to the TSR provision, the estimated impact of this market condition is reflected in the grant date fair value per share of the awards. Accordingly, compensation cost is not reversed to reflect any actual reductions in the awards that may result from the TSR provision. However, if the Company’s TSR during the performance period ranks below the level specified in the award agreements, relative to a comparator group of companies, and the Committee elects not to reduce the award (or reduce by a lesser amount), this election would be accounted for as a modification of the original award and additional compensation cost would be recognized at that time. The grant date fair value of the awards subject to the TSR provision awarded during fiscal years 2022, 2021 and 2020 was valued by a Monte Carlo simulation model that assessed the probabilities of various TSR outcomes. The significant assumptions used in the Monte Carlo simulations are as follows:

	2022		2021		2020
Risk-free interest rate		0.79%		0.22%		1.57%
Expected dividend yield of stock		—		—		—
Expected volatility of stock		32.2%		31.4%		16.8%
Vesting period (in years)		3.0		3.0		3.0

The risk-free interest rate was based on the yield on U.S. Treasury securities matching the vesting period. A zero-percent dividend yield was used, which is mathematically equivalent to the assumption that dividends are reinvested as they are paid. The expected volatility is based on the historical volatility of the Company’s stock. Volatility assumptions were also made for each of the companies included in the comparator group. The vesting period is equal to the performance period set forth in the terms of the award.

The amounts of compensation cost recognized for share-based compensation arrangements are presented below:

	2022			2021			2020
Total compensation cost	$	7.5		$	16.6		$	9.4
Compensation cost capitalized		(1.1	)		(2.7	)		(0.6	)
Compensation cost recognized in net income		6.4			13.9			8.8
Income tax benefit recognized in net income		(1.5	)		(3.2	)		(2.1	)
Compensation cost recognized in net income, net of income tax	$	4.9		$	10.7		$	6.7

As of September 30, 2022, there was $11.2 of total unrecognized compensation cost related to non-vested share-based compensation arrangements, which is expected to be recognized over a weighted average period of 1.7 years.

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Note 4 - Earnings Per Common Share

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Earnings Per Share [Text Block]

	2022		2021		2020
Basic Earnings Per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Basic Earnings Per Share of Common Stock	$	3.96	$	4.97	$	1.44
Diluted Earnings per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.1		51.7		51.3
Diluted Earnings Per Share of Common Stock	$	3.95	$	4.96	$	1.44
* Calculation excludes certain outstanding common shares (shown in millions by period at the right) attributable to stock units subject to performance or market conditions and restricted stock, which could have a dilutive effect in the future		0.1		0.1		0.1

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Note 5 - Shareholders' Equity

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

5. SHAREHOLDERS’ EQUITY

Spire

Preferred Stock

At September 30, 2022 and 2021, Spire had authorized 5,000,000 shares of preferred stock.

On May 21, 2019, Spire completed the public offering of 10,000,000 depositary shares (the “Depositary Shares”), each representing a 1/1,000th interest in a share of the Company’s 5.90% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $25.00 per share, with a liquidation preference of $25,000 per share (the “Preferred Stock”). The transaction resulted in $242.0 of net proceeds, after deducting commissions and sale expenses, which proceeds were used to (i) refinance long-term and short-term Spire debt and (ii) fund capital expenditures at both the Utilities and Spire’s gas-related businesses.

Dividends on the Preferred Stock, when declared by the Board, are payable on the liquidation preference amount, on a cumulative basis, quarterly in arrears on the 15th day of February, May, August and November of each year, beginning on August 15, 2019. Dividends are payable out of amounts legally available for the payment of dividends at an annual rate equal to 5.90% of the liquidation preference per share of Preferred Stock (equivalent to $25.00 per Depositary Share). Dividends accumulate daily and are cumulative from May 21, 2019.

Under the terms of the Preferred Stock, the Company’s ability to declare or pay dividends on, or purchase or redeem, shares of its common stock or any class or series of capital stock of the Company that rank junior to the Preferred Stock are subject to certain restrictions in the event that the Company does not declare and pay the full cumulative dividends on the Preferred Stock through the most recently completed quarterly dividend period.

Spire may, at its option, redeem the Preferred Stock (i) in whole, but not in part, at any time prior to August 15, 2024, within 120 days after a ratings event where a rating agency amends, clarifies or changes the criteria it uses to assign equity credit for securities such as the Preferred Stock, at a redemption price in cash equal to $25,500 per share, or (ii) in whole or in part, from time to time, on or after August 15, 2024, at a redemption price in cash equal to $25,000 per share, plus, in each case, all accumulated and unpaid dividends (whether declared or not) up to such redemption date.

Shareholders of the Preferred Stock generally have no voting rights with respect to matters that generally require the approval of voting stockholders. The limited voting rights of holders of the Preferred Stock include the right to vote on certain matters that may affect the preference or special rights of the Preferred Stock. In addition, if and whenever dividends on any shares of Preferred Stock have not been declared and paid for at least six dividend periods, whether or not consecutive, the number of directors then constituting the Board shall automatically be increased by two (to be elected by the holders of the Preferred Stock) until all accumulated and unpaid dividends on the Preferred Stock have been paid in full.

Equity Units

In February 2021, Spire issued 3.5 million equity units, initially in the form of Corporate Units, for an aggregate stated amount of $175.0, resulting in net proceeds (after underwriting fees and other issuance costs) of $169.3. Each “Corporate Unit” has a stated amount of fifty dollars and consists of (i) a stock purchase contract and (ii) a 1/20, or 5%, undivided beneficial ownership interest in one thousand dollars principal amount of Spire’s 2021 Series A 0.75% Remarketable Senior Notes due March 1, 2026 (RSNs). The RSNs are pledged as collateral to secure the holder’s obligation under the related stock purchase contracts. Each stock purchase contract obligates the holder to purchase, and Spire to issue and deliver, on March 1, 2024, for a price of fifty dollars in cash, a variable number of shares of its common stock as follows (subject to anti-dilution adjustments).

If the applicable market value* per share	Number of shares to be purchased per
of Spire common stock is:	stock purchase contract is:
Equal to or greater than $78.6906 (“threshold appreciation price”)	0.6354 (“minimum settlement rate”)
Less than $78.6906, but greater than $64.24	$50.00 ÷ applicable market value*
Less than or equal to $64.24 (“reference price”)	0.7783 (“maximum settlement rate”)

*Based on the volume-weighted average price of Spire common stock during the 20 trading days before settlement.

If a holder elects to settle purchase contracts early, the holder would pay fifty dollars per unit and receive 0.6354 shares per unit.

The Company makes quarterly interest payments on the RSNs at the rate of 0.75% per year and quarterly contract adjustment payments on the stock purchase contracts at the rate of 6.75%. The RSNs and the contract adjustment payments are structurally subordinated to all liabilities of Spire’s subsidiaries.

At issuance, the Company recorded the $35.0 present value of the stock purchase contract payments as a liability (reflected in “Other” current and noncurrent liabilities on the balance sheet) offset by a charge to additional paid-in capital in equity. This noncash financing activity has been excluded from the statement of cash flows. Interest payments on the RSNs are recorded as interest expense and stock purchase contract payments are charged against the liability. Accretion of the stock purchase contract liability is recorded as imputed interest expense. In calculating diluted EPS, the Company applies the treasury stock method to the Corporate Units. These securities have not had an effect on diluted EPS.

In order to secure funds necessary for the holders to pay the purchase price of the common stock on the purchase contract settlement date, the remarketing agent will remarket the RSNs on behalf of the current holders to new third-party investors. Following any successful remarketing of the RSNs, the interest rate on the RSNs will be reset, interest will be payable on a semi-annual basis, and Spire will cease to have the option to redeem the RSNs, other than in connection with the occurrence or continuance of certain special events.

ATM Program

On February 6, 2019, Spire entered into 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 pursuant to Spire’s universal shelf registration statement and a prospectus supplement. Under this program, a total of 626,249 shares with an aggregate offering price of $47.8 were issued in fiscal 2019 and 2020, and 354,000 shares with an aggregate offering price of $23.5 were issued in the second quarter of fiscal 2022. On April 28, 2022, Spire’s Board of Directors approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 before the May 2025 expiration of the new universal shelf registration statement on Form S-3 filed in May 2022, under which a total of 365,625 shares with an aggregate offering price of $27.7 were issued in the third quarter of fiscal 2022.

Other Equity Information

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 158,535 and 153,190 shares at September 30, 2022 and November 11, 2022, respectively, remaining available for issuance under this Form S-3. Spire also has 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 Missouri

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock or to make loans to its parent company. These mortgage restrictions are applicable regardless of whether the stock is publicly held or held solely by Spire Missouri’s parent company. Under the most restrictive of these provisions, no cash dividend may be declared or paid if, after the dividend, the aggregate net amount spent for all dividends after September 30, 1953 would exceed a maximum amount determined by a formula set out in the mortgage. Under that formula, the maximum amount is the sum of $8.0 plus earnings applicable to common stock (adjusted for stock repurchases and issuances) for the period from September 30, 1953 to the last day of the quarter before the declaration or payment date for the dividends. As of September 30, 2022 and 2021, the amount under the mortgage’s formula that was available to pay dividends was $1,579.4 and $1,413.4, respectively. Thus, all of Spire Missouri’s retained earnings were free from such dividend restrictions as of those dates.

Spire Missouri has 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. 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. As of September 30, 2022, the entire amount remained available under this authorization. 

At September 30, 2022 and 2021, Spire Missouri had authorized 1,480,000 shares of preferred stock, but none were issued and outstanding.

Spire Alabama

At September 30, 2022 and 2021, Spire Alabama had authorized 120,000 shares of preferred stock, but none were issued and outstanding.

Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income (AOCI), net of income taxes, recognized in the balance sheets at September 30 were as follows:

	Net			Defined Benefit			Net Unrealized
	Unrealized			Pension and			Gain (Loss) on
	Gain (Loss)			Other			Available-for-
	on Cash Flow			Postretirement			Sale Debt
	Hedges			Benefit Plans			Securities			Total
Spire
Balance at September 30, 2020	$	(38.4	)	$	(2.9	)	$	0.1		$	(41.2	)
Other comprehensive income (loss)		46.3			(1.3	)		(0.2	)		44.8
Balance at September 30, 2021		7.9			(4.2	)		(0.1	)		3.6
Other comprehensive income (loss)		42.5			1.5			(0.4	)		43.6
Balance at September 30, 2022	$	50.4		$	(2.7	)	$	(0.5	)	$	47.2
Spire Missouri
Balance at September 30, 2020	$	—		$	(2.9	)	$	—		$	(2.9	)
Other comprehensive loss		—			(1.3	)		—			(1.3	)
Balance at September 30, 2021		—			(4.2	)		—			(4.2	)
Other comprehensive income		—			1.5			—			1.5
Balance at September 30, 2022	$	—		$	(2.7	)	$	—		$	(2.7	)

Income tax expense (benefit) recorded for items of other comprehensive income (loss) reported in the statements of comprehensive income is calculated by applying statutory federal, state, and local income tax rates applicable to ordinary income. The tax rates applied to individual items of other comprehensive income (loss) are similar within each reporting period. For the periods presented, Spire Alabama had no AOCI balances.

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Note 6 - Long-term Debt

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Long-Term Debt [Text Block]

The composition of long-term debt as of September 30 is shown in the following tables.

	2022			2021
Spire
3.31% Notes Payable, due December 15, 2022	$	25.0		$	25.0
3.54% Senior Notes, due February 27, 2024		150.0			150.0
0.75% Remarketable Senior Notes, due March 1, 2026		175.0			175.0
3.13% Senior Notes, due September 1, 2026		130.0			130.0
3.93% Senior Notes, due March 15, 2027		100.0			100.0
4.70% Senior Notes, due August 15, 2044		250.0			250.0
Total principal of Spire Missouri long-term debt (see below)		1,648.0			1,348.0
Total principal of Spire Alabama long-term debt (see below)		575.0			625.0
Other subsidiaries' long-term debt:
5.00% First Mortgage Bonds, due September 30, 2031		42.0			42.0
2.95% Notes, with annual principal payments through December 2034		123.9			129.6
3.52% First Mortgage Bonds, due September 30, 2049		40.0			40.0
Total principal of long-term debt		3,258.9			3,014.6
Less: Unamortized discounts and debt issuance costs		(19.2	)		(19.7	)
Less: Current portion		(281.2	)		(55.8	)
Long-term debt, excluding current portion	$	2,958.5		$	2,939.1
Spire Missouri
First Mortgage Bonds:
3.40% Series, due August 15, 2023	$	250.0		$	250.0
Floating Rate Series, due December 2, 2024		300.0			—
3.40% Series, due March 15, 2028		45.0			45.0
7.00% Series, due June 1, 2029	19.3			19.3
2.84% Series, due November 15, 2029		275.0			275.0
7.90% Series, due September 15, 2030		30.0			30.0
3.68% Series, due September 15, 2032		50.0			50.0
6.00% Series, due May 1, 2034		99.3			99.3
6.15% Series, due June 1, 2036		54.5			54.5
4.63% Series, due August 15, 2043		99.9			99.9
4.23% Series, due September 15, 2047		70.0			70.0
3.30% Series, due June 1, 2051		305.0			305.0
4.38% Series, due September 15, 2057		50.0			50.0
Total principal of Spire Missouri long-term debt		1,648.0			1,348.0
Less: Unamortized discounts and debt issuance costs		(10.3	)		(9.6	)
Less: Current portion		(250.0	)		—
Spire Missouri long-term debt, excluding current portion	$	1,387.7		$	1,338.4
Spire Alabama
3.86% Notes, due December 22, 2021	$	—		$	50.0
3.21% Notes, due September 15, 2025		35.0			35.0
2.88% Notes, due December 1, 2029		100.0			100.0
2.04% Notes, due December 15, 2030		150.0			150.0
5.90% Notes, due January 15, 2037		45.0			45.0
4.31% Notes, due December 1, 2045		80.0			80.0
3.92% Notes, due January 15, 2048		45.0			45.0
4.64% Notes, due January 15, 2049		90.0			90.0
4.02% Notes, due January 15, 2058		30.0			30.0
Total principal of Spire Alabama long-term debt		575.0			625.0
Less: Unamortized discounts and debt issuance costs		(3.5	)		(3.8	)
Less: Current portion		—			(50.0	)
Spire Alabama long-term debt, excluding current portion	$	571.5		$	571.2

Spire Missouri's $300.0 of first mortgage bonds due December 2, 2024 are secured equally with all its other first mortgage bonds. Interest is payable quarterly in arrears at a floating rate based on the compounded secured overnight financing rate plus 50 basis points, with a maximum rate of the lesser of 8% or the maximum rate then permitted by applicable law.

Maturities of long-term debt for Spire on a consolidated basis, Spire Missouri and Spire Alabama for the five fiscal years after September 30, 2022 are as follows:

	2023		2024		2025		2026		2027
Spire	$	281.2	$	156.6	$	342.0	$	312.5	$	108.1
Spire Missouri		250.0		—		300.0		—		—
Spire Alabama		—		—		35.0		—		—

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of September 30, 2022, there were no events of default under these financial covenants.

After fiscal year end, 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.

Spire

At September 30, 2022, including the current portion but excluding unamortized discounts and debt issuance costs, Spire had long-term debt totaling $3,258.9, of which $1,648.0 was issued by Spire Missouri, $575.0 was issued by Spire Alabama and $205.9 was issued by other subsidiaries. Except for $300.0 of Spire Missouri floating-rate bonds, all long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. However, increases and decreases in fair value would impact earnings and cash flows only if the Company were to reacquire any of these issues in the open market prior to maturity. Under GAAP applicable to the Utilities’ regulated operations, losses or gains on early redemption of long-term debt would typically be deferred as regulatory assets or regulatory liabilities and amortized over a future period. Interest expense shown on Spire’s consolidated statement of income is net of capitalized interest totaling $4.5, $4.4 and $5.8 for the years ended September 30, 2022, 2021 and 2020, respectively.

As indicated in Note 5, Shareholders’ Equity, Spire has a shelf registration statement on Form S-3 on file with the SEC for the issuance of equity and debt securities.

Spire Missouri

At September 30, 2022, including the current portion but excluding unamortized discounts and debt issuance costs, Spire Missouri had long-term debt totaling $1,648.0. Except for $300.0 of floating-rate bonds, all long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. Interest expense shown on Spire Missouri’s statement of comprehensive income is net of capitalized interest totaling $0.6, $0.2 and $0.8 for the years ended September 30, 2022, 2021 and 2020, respectively.

As indicated in Note 5, Shareholders’ Equity, Spire Missouri has a shelf registration on Form S-3 on file with the SEC for issuance of equity and debt securities, which expires on May 9, 2025. 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. As of September 30, 2022, the entire amount remained available under this authorization.

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock, which are described in Note 5, Shareholders’ Equity.

Spire Alabama

At September 30, 2022, including the current portion (none) but excluding unamortized debt issuance costs, Spire Alabama had fixed-rate long-term debt totaling $575.0. While these long-term debt issues are fixed-rate, they are subject to changes in fair value as market interest rates change. Interest expense shown on Spire Alabama’s statement of income is net of capitalized interest totaling $3.2, $3.2 and $1.9 for the years ended September 30, 2022, 2021 and 2020, respectively.

Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

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Note 7 - Notes Payable and Credit Agreements

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Debt Disclosure [Text Block]

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 September 30, 2022, total debt was less than or equal to 60% of total capitalization for each borrower. There were no borrowings against this credit facility as of September 30, 2022 and 2021.

Spire has a commercial paper program (“CP Program”) pursuant to which it 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.

In March 2021, Spire Missouri entered into a loan agreement with several banks for a $250.0, 364-day unsecured term loan with an interest rate based on LIBOR plus 65 basis points. The loan was repaid in March 2022.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of September 30, 2022, $777.8 of Spire’s short-term borrowings were used to support lending to the Utilities.

	Spire			Spire						Spire
	(Parent Only)			Missouri						Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Year Ended September 30, 2022
Highest borrowings outstanding	$	1,079.0		$	250.0		$	456.6		$	265.2		$	1,079.0
Lowest borrowings outstanding		408.0			—			43.2			38.4			462.5
Weighted average borrowings		636.2			113.0			244.9			152.6			749.2
Weighted average interest rate		1.2	%		0.8	%		0.4	%		0.5	%		1.1	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		0.0	%		3.3	%		3.3	%		3.3	%
As of September 30, 2021
Borrowings outstanding	$	422.0		$	250.0		$	240.9		$	49.0		$	672.0
Weighted average interest rate		0.2	%		0.7	%		0.2	%		0.2	%		0.4	%

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Note 8 - Fair Value of Financial Instruments

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Fair Value Disclosures [Text Block]

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis were as follows:

					Classification of
					Estimated Fair Value
					Quoted
					Prices in		Significant
					Active		Observable
	Carrying		Fair		Markets		Inputs
	Amount		Value		(Level 1)		(Level 2)
Spire
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 September 30, 2021
Cash and cash equivalents	$	4.3	$	4.3	$	4.3	$	—
Notes payable		672.0		672.0		—		672.0
Long-term debt, including current portion		2,994.9		3,375.9		—		3,375.9
Spire Missouri
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 September 30, 2021
Note Payable	$	250.0	$	250.0	$	—	$	250.0
Notes payable - associated companies		240.9		240.9		—		240.9
Long-term debt		1,338.4		1,540.4		—		1,540.4
Spire Alabama
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 September 30, 2021
Notes payable - associated companies	$	49.0	$	49.0	$	—	$	49.0
Long-term debt, including current portion		621.2		707.5		—		707.5

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Note 9 - Fair Value Measurements

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

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

The information presented below 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. The mutual funds included in Level 2 are valued based on the closing net asset value per unit.

Derivative instruments included in Level 1 are valued using quoted market prices on the NYMEX or the Intercontinental Exchange (ICE). Derivative instruments classified in Level 2 include physical commodity derivatives that are valued using broker or dealer quotation services 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 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 September 30, 2022 or 2021. 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 investment gains or losses in the corresponding periodic income statement. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net on the balance sheets when a legally enforceable netting agreement exist between the Company, Spire Missouri or Spire Alabama and the counterparty to the derivative contract. For additional information on derivative instruments, see Note 10, Derivative Instruments and Hedging Activities.

Spire

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/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	$	318.2	$	—	$	—	$	(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 September 30, 2021
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		114.7		—		(93.7	)		21.0
Natural gas commodity contracts		—		35.2		—		(5.5	)		29.7
Other:
U.S. stock/bond mutual funds		26.2		—		—		—			26.2
Interest rate swaps		12.6		—		—		(5.2	)		7.4
Total	$	166.6	$	149.9	$	—	$	(208.4	)	$	108.1
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		62.0		—		(62.0	)		—
Natural gas commodity contracts		—		96.7		—		(5.5	)		91.2
Other:
Interest rate swaps		5.7		—		—		(5.2	)		0.5
Total	$	6.0	$	158.7	$	—	$	(73.0	)	$	91.7

Spire Missouri

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/Payables			Total
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 September 30, 2021
ASSETS
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Total	$	127.8	$	—	$	—	$	(104.0	)	$	23.8
LIABILITIES
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—

Spire Alabama

Spire Alabama occasionally utilizes a gasoline derivative program to stabilize the cost of fuel used in operations. As of September 30, 2022 and September 30, 2021, there were no gasoline derivatives outstanding.

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Note 10 - Derivative Instruments and Hedging Activities

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Spire

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options and swaps for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. Further discussion of this policy can be found in the Spire Missouri section.

From time to time Spire Missouri and Spire Alabama purchase NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment. Further information on these derivatives can be found in the Spire Missouri and Spire Alabama sections, respectively.

In the course of its business, Spire’s gas marketing subsidiary, Spire Marketing (including a wholly owned subsidiary), enters into commitments associated with the purchase or sale of natural gas. Certain of Spire Marketing’s derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of ASC Topic 815 and are accounted for as executory contracts on an accrual basis. Any of Spire Marketing’s derivative natural gas contracts that are not designated as normal purchases or normal sales are accounted for at fair value. At September 30, 2022, the fair values of 492.2 million MMBtu of non-exchange-traded natural gas commodity contracts were reflected in the Consolidated Balance Sheet. Of these contracts, 347.8 million MMBtu will settle during fiscal 2023, and 88.8 million MMBtu, 47.5 million MMBtu, 7.0 million MMBtu, and 1.1 million MMBtu will settle during fiscal years 2024, 2025, 2026 and 2027, respectively. These contracts have not been designated as hedges; therefore, changes in the fair value of these contracts are reported in earnings each period.

Furthermore, Spire Marketing manages the price risk associated with its fixed-priced commitments by either closely matching the offsetting physical purchase or sale of natural gas at fixed prices or through the use of NYMEX or ICE futures, swap, and option contracts to lock in margins.

At September 30, 2022, Spire Marketing’s unmatched fixed-price positions were not material to Spire’s financial position or results of operations. Spire Marketing’s NYMEX and ICE natural gas futures, swap and option contracts used to lock in margins may be designated as cash flow hedges of forecasted transactions for financial reporting purposes.

In the second quarter of 2020, the Company entered into multiple ten-year interest rate swaps with fixed interest rates ranging from 0.934% to 1.2975% for a total notional amount of $75.0 to protect itself against adverse movements in interest rates on future interest rate payments. The Company recorded a $9.8 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022. In the third quarter of 2021 the Company entered into multiple ten-year interest rate swaps with fixed interest rates ranging from 2.008% to 2.1075% for a total notional amount of $150.0 to protect itself against adverse movements in interest rates on future interest rate payments. The Company recorded a $17.9 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

In the fourth quarter of 2021, the Company entered into two swap contracts. Both contracts are ten-year interest rate swaps; the first swap has a notional amount of $50.0 with a fixed interest rate of 1.597%, while the second swap has a notional amount of $50.0 with a fixed interest rate of 1.821%. The Company recorded a $5.7 mark-to-market gain in accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

In the first quarter of fiscal 2022, the Company entered into a ten-year interest rate swap contract with a notional amount of $50.0 with a fixed interest rate of 1.4918%. The Company recorded a $7.0 mark-to-market gain to accumulated other comprehensive income on this swap for the twelve months ended September 30, 2022.

In the second quarter of fiscal 2022, the Company entered into multiple ten-year interest rate swap contracts with a cumulative total notional amount of $150.0 with fixed interest rates ranging from 1.64750% to 1.7460%. The Company recorded a $16.2 mark-to-market gain to accumulated other comprehensive income on these swaps for the twelve months ended September 30, 2022.

As of  September 30, 2022, the Company has recorded through other comprehensive income a cumulative mark-to-market net asset of $63.6 on open swaps. The Company’s and Spire Missouri’s exchange-traded/cleared derivative instruments consist primarily of NYMEX and ICE positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX and ICE natural gas futures and swap positions at September 30, 2022 and 2021 were as follows:

	September 30, 2022				September 30, 2021
Gas Marketing	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		76.3		54		103.3		51
Natural gas options purchased, net		3.7		12		7.1		15
Natural gas basis swaps purchased		61.7		39		101.7		27
Gas Utility
Natural gas futures purchased		13.0		12		52.8		12

At September 30, 2022, Spire Missouri also had 23.4 MMBtu of other price mitigation in price mitigation in place through the use of NYMEX natural gas option-based strategies.

Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets of the Company at fair value, and the change in fair value of the effective portion of these hedge instruments is recorded, net of income tax, in other comprehensive income or loss (OCI). Accumulated other comprehensive income or loss (AOCI) is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. Based on market prices at September 30, 2022, it is expected that an immaterial amount of unrealized gains will be reclassified into the Consolidated Statements of Income of the Company during the next twelve months. Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the Consolidated Statements of Cash Flows.

Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income
	Location of Gain (Loss)
	Recorded in Income	2022			2021			2020
Derivatives in Cash Flow Hedging Relationships
Effective portion of gain (loss) recognized in OCI on derivatives:
Interest rate swaps		$	56.7		$	61.2		$	(8.9	)
Effective portion of (loss) gain reclassified from AOCI to income:
Interest rate swaps	Interest Expense	$	(1.2	)	$	(1.3	)	$	(3.2	)
Derivatives Not Designated as Hedging Instruments*
Gain (Loss) recognized in income on derivatives:
Natural gas commodity contracts	Operating Expenses: Natural Gas	$	52.6		$	54.1		$	9.2
NYMEX / ICE natural gas contracts	Operating Expenses: Natural Gas		43.3			(77.5	)		(11.8	)
Total		$	95.9		$	(23.4	)	$	(2.6	)

* Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Missouri Utilities’ PGA clauses and initially recorded as regulatory assets or regulatory liabilities. These gains and losses are excluded from the table above because they have no direct impact on the statements of income. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

Fair Value of Derivative Instruments in the Consolidated Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	63.6	Current Liabilities: Other	$	—
Subtotal			63.6			—
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		57.8	Current Liabilities: Other		30.7
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other		79.2	Current Liabilities – Other		71.5
	Deferred Charges and Other Assets: Other	12.7		Deferred Credits and Other Liabilities: Other		10.8
Natural gas commodity	Current Assets: Other		53.4	Current Liabilities – Other		55.1
	Deferred Charges and Other Assets: Other		3.1	Deferred Credits and Other Liabilities: Other		10.4
Subtotal			206.2			178.5
Total derivatives		$	269.8		$	178.5
September 30, 2021
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	12.6	Current Liabilities: Other	$	5.7
Subtotal			12.6			5.7
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		104.0	Current Liabilities: Other		0.3
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other	93.9		Current Liabilities – Other		50.1
	Deferred Charges and Other Assets: Other		20.8	Deferred Credits and Other Liabilities: Other		11.9
Natural gas commodity	Current Assets: Other		34.1	Current Liabilities – Other		82.5
	Deferred Charges and Other Assets: Other		1.1	Deferred Credits and Other Liabilities: Other		14.2
Subtotal			253.9			159.0
Total derivatives		$	266.5		$	164.7

* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of the Company’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

Following is a reconciliation of the amounts in the tables above to the amounts presented in the Consolidated Balance Sheets:

	2022			2021
Fair value of derivative assets presented above	$	269.8		$	266.5
Fair value of cash margin receivable offset with derivatives		(36.6	)		(135.4	)
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	116.2		$	58.1
Derivative Instrument Assets, per Consolidated Balance Sheets:
Current Assets: Other	$	113.1		$	57.0
Deferred Charges and Other Assets: Other		3.1			1.1
Total	$	116.2		$	58.1
Fair value of derivative liabilities presented above	$	178.5		$	164.7
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	61.5		$	91.7
Derivative Instrument Liabilities, per Consolidated Balance Sheets:
Current Liabilities: Other	$	51.1		$	77.5
Deferred Credits and Other Liabilities: Other		10.4			14.2
Total	$	61.5		$	91.7

Additionally, at September 30, 2022 and 2021, the Company had $49.8 and $40.8, respectively, in cash margin receivables not offset with derivatives, which are presented in Accounts Receivable – Other.

Spire Missouri

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options, swaps and over-the-counter instruments for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. This policy strictly prohibits speculation and permits Spire Missouri to hedge current physical natural gas purchase commitments or forecasted or anticipated future peak (maximum) physical need for natural gas delivered. Costs and cost reductions, including carrying costs, associated with Spire Missouri’s use of natural gas derivative instruments are allowed to be passed on to Spire Missouri customers through the operation of its PGA clause, through which the MoPSC allows Spire Missouri to recover gas supply costs, subject to prudence review by the MoPSC. Accordingly, Spire Missouri does not expect any adverse earnings impact as a result of the use of these derivative instruments.

Spire Missouri does not designate these instruments as hedging instruments for financial reporting purposes because gains or losses associated with the use of these derivative instruments are deferred and recorded as regulatory assets or regulatory liabilities pursuant to ASC Topic 980, Regulated Operations, and, as a result, have no direct impact on the statements of income.

The timing of the operation of the PGA clause may cause interim variations in short-term cash flows, because Spire Missouri is subject to cash margin requirements associated with changes in the values of these instruments. Nevertheless, carrying costs associated with such requirements are recovered through the PGA clause.

From time to time, Spire Missouri purchases NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. These contracts are designated as cash flow hedges of forecasted transactions pursuant to ASC Topic 815, Derivatives and Hedging. The gains or losses on these derivative instruments are not subject to Spire Missouri’s PGA clause. At September 30, 2022, Spire Missouri had no gasoline futures contracts outstanding.

Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets at fair value and the change in the fair value of the effective portion of these hedge instruments is recorded, net of income tax, in OCI. AOCI is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. As in both 2021 and 2020, there will be no reclassifications into the statements of income during fiscal 2023. Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the statements of cash flows.

Spire Missouri’s derivative instruments consist primarily of NYMEX positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX natural gas futures positions at September 30, 2022 and 2021 were as follows:

	September 30, 2022				September 30, 2021
	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		13.0		12		52.8		12

At September 30, 2022, Spire Missouri had also had 23.4 MMBtu of other price mitigation in place through the use of NYMEX natural gas option-based strategies.

Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Spire Missouri’s PGA clauses and initially recorded as regulatory assets or regulatory liabilities. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

Fair Value of Derivative Instruments in the Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	57.8	Current Liabilities: Other	$	30.7
September 30, 2021
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	104.0	Current Liabilities: Other	$	0.3

* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the Balance Sheets. As such, the gross balances presented in the table above are not indicative of Spire Missouri’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

Following is a reconciliation of the amounts in the tables above to the amounts presented in Spire Missouri’s Balance Sheets:

	2022			2021
Fair value of derivative assets presented above	$	57.8		$	104.0
Fair value of cash margin (payable) receivable offset with derivatives		(27.1	)		(103.7	)
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—
Fair value of derivative liabilities presented above	$	30.7		$	0.3
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—

Additionally, at September 30, 2022 and 2021, Spire Missouri had $24.0 and $40.3, respectively, in cash margin receivables not offset with derivatives, which are presented in Accounts Receivable – Other.

Spire Alabama

Spire Alabama periodically employs a gasoline derivative program to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. The gains or losses on these derivative instruments are not subject to Spire Alabama’s GSA rider. There were no such contracts outstanding as of September 30, 2022 and 2021.

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Note 11 - Concentrations of Credit Risk

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

Spire’s Gas Utility segment serves 1.7 million customers in three states across multiple rate classes resulting in a significant amount of revenue diversity. Credit risk is mitigated by the high percentage of residential customers as well as the geographic diversity of the Utilities, though customers for each of the Utilities are concentrated in a single state.

Spire Marketing’s accounts receivable attributable to utility companies and their marketing affiliates totaled $245.6 at September 30, 2022. The concentration of transactions with these counterparties has the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that customers in this group may be affected similarly by changes in economic, industry, or other conditions. Spire Marketing also has concentrations of credit risk with certain individually significant counterparties. At September 30, 2022, the amounts included in accounts receivable from its five largest counterparties (in terms of net accounts receivable exposure) totaled $111.2. Four of these five counterparties are investment-grade rated integrated utilities, while the fifth is rated slightly below investment-grade, but with a stable outlook.

To manage these risks, Spire Marketing has established procedures to determine the creditworthiness of its counterparties. These procedures include obtaining credit ratings and credit reports, analyzing counterparty financial statements to assess financial condition, and considering the industry environment in which the counterparty operates. This information is monitored on an ongoing basis. In some instances, Spire Marketing may require credit assurances such as prepayments, letters of credit, or parental guaranties. In addition, Spire Marketing may enter into netting arrangements to mitigate credit risk with counterparties in the energy industry with whom it conducts both sales and purchases of natural gas. Where there is no netting arrangement, Spire Marketing records accounts receivable, accounts payable, and prepayments for physical sales and purchases of natural gas on a gross basis. Sales are typically made on an unsecured credit basis with payment due the month following delivery. Accounts receivable amounts are closely monitored and provisions for uncollectible amounts are accrued when losses are probable.

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Note 12 - Income Taxes

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Income Tax Disclosure [Text Block]

The Company, Spire Missouri, and Spire Alabama are subject to federal income tax as well as income tax in various state and local jurisdictions. Spire files a consolidated federal income tax return and various state income tax returns and allocates income taxes to Spire Missouri, Spire Alabama and its other subsidiaries as if each entity were a separate taxpayer.

The provision for income taxes during the fiscal years ended September 30, 2022, 2021, and 2020 was as follows:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022		2021		2020
Federal:
Current	$	0.5		$	0.2		$	0.4		$	—		$	—		$	—		$	—	$	—	$	—
Deferred		47.0			49.5			5.8			18.2			22.0			14.9			18.1		19.8		17.4
Investment tax credits		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		—		—		—
State and local:
Current		0.5			1.3			3.0			—			—			0.1			—		—		—
Deferred		11.1			17.7			3.4			3.3			3.5			2.5			5.1		5.2		4.6
Total income tax expense	$	58.9		$	68.5		$	12.4		$	21.3		$	25.3		$	17.3		$	23.2	$	25.0	$	22.0

The effective income tax rate varied from the federal statutory income tax rate for each year due to the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Federal income tax statutory rate		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%
State and local income taxes, net of federal income tax benefits		3.6			3.6			9.0			2.6			2.6			2.6			4.1			4.1			4.1
Certain expenses capitalized on books and deducted on tax return		(1.6	)		(1.6	)		(6.6	)		(3.2	)		(3.3	)		(4.6	)		—			—			—
Taxes related to prior years		(0.3	)		(0.5	)		(1.8	)		(0.6	)		(0.2	)		(1.4	)		—			—			0.1
Amortization of excess deferred taxes		(3.5	)		(2.5	)		(8.3	)		(7.3	)		(5.0	)		(5.7	)		—			—			—
Other items – net *		1.9			0.1			(1.0	)		3.1			(0.2	)		(0.2	)		0.2			0.2			(0.1	)
Effective income tax rate		21.1	%		20.1	%		12.3	%		15.6	%		14.9	%		11.7	%		25.3	%		25.3	%		25.1	%

* Other consists primarily of property adjustments.

The significant items comprising the net deferred tax liability or asset as of September 30 were as follows:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Deferred tax assets:
Reserves not currently deductible	$	33.5		$	18.3		$	4.0		$	8.5		$	7.4		$	6.6
Pension and other postretirement benefits		72.6			77.4			52.6			53.4			—			—
Goodwill		—			—			—			—			73.0			87.2
Operating losses		255.1			264.5			116.9			110.3			140.3			130.3
Regulatory amount due to customers, net		34.5			33.2			30.7			29.4			—			—
Other		24.9			32.4			—			—			—			—
Deferred tax assets		420.6			425.8			204.2			201.6			220.7			224.1
Less: Valuation allowance		—			(0.5	)		—			(0.4	)		—			—
Total deferred tax assets		420.6			425.3			204.2			201.2			220.7			224.1
Deferred tax liabilities:
Relating to property		(740.0	)		(693.9	)		(489.3	)		(464.0	)		(201.6	)		(182.7	)
Regulatory pension and other postretirement benefits		(92.8	)		(95.6	)		(72.3	)		(71.2	)		(1.6	)		(1.6	)
Deferred gas costs		(75.8	)		(81.1	)		(74.0	)		(79.5	)		—			—
Other**		(187.1	)		(167.0	)		(68.7	)		(66.5	)		(6.5	)		(5.6	)
Total deferred tax liabilities		(1,095.7	)		(1,037.6	)		(704.3	)		(681.2	)		(209.7	)		(189.9	)
Net deferred tax (liability) asset	$	(675.1	)	$	(612.3	)	$	(500.1	)	$	(480.0	)	$	11.0		$	34.2

** For Spire, Other consists primarily of goodwill-related liabilities.

As indicated in Note 1, Summary of Significant Accounting Policies, the Company’s regulated operations accounting for income taxes is impacted by ASC Topic 980, Regulated Operations. The Tax Cuts and Jobs Act of 2017 (TCJA) reduced the corporate federal income tax rate, and the corresponding reductions in deferred income tax balances resulted in amounts previously collected from utility customers for these deferred taxes becoming refundable to such customers, generally through reductions in future rates. The TCJA includes provisions that stipulate how these excess deferred taxes are to be passed back to customers for certain accelerated tax depreciation benefits. In fiscal 2018, the MoPSC Amended Report and Order took effect and the estimated excess accumulated deferred income tax began to be returned to Spire Missouri customers in rates. During the current fiscal year, the amount of excess accumulated deferred income taxes was trued up as part of the rate proceeding. The amount being returned related to the TCJA has been updated and in addition the excess accumulated deferred income taxes related to the Missouri tax rate change has begun to be returned. Excess accumulated deferred taxes of $9.9 were returned in fiscal 2022 and $8.4 were returned by Spire Missouri during each of fiscal years 2021, and 2020. The treatment for accumulated deferred income tax balances for Spire Alabama, Spire Gulf and Spire Mississippi is yet to be determined by state regulators; however, discussions have begun with respect to these balances.

In assessing whether deferred tax assets are realizable, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. Management considers all significant available positive and negative evidence, including the existence of losses in recent years, the timing of deferred tax liability reversals, projected future taxable income, taxable income in carryback years, and tax planning strategies to assess the need for a valuation allowance. Based upon this evidence, management believes it is more likely than not the Company, Spire Missouri and Spire Alabama will realize the benefits of these deferred tax assets.

As of September 30, 2022, Spire, and on a separate company basis, Spire Missouri and Spire Alabama, had federal and state loss carryforwards, contribution carryforwards, and various tax credit carryforwards as shown below.

	Spire		Spire Missouri		Spire Alabama
Federal and state loss carryforwards	$	1,047.7	$	462.3	$	556.7
Contribution carryforwards		10.4		7.0		0.4
Tax credit carryforwards		4.6		3.4		—

For federal tax purposes, Spire Missouri’s and Spire Alabama’s loss carryforwards may be utilized against income from another member of the consolidated group. The loss carryforwards begin to expire in fiscal 2030 for certain state purposes and fiscal 2035 for federal and other state purposes. Contribution carryforwards and tax credit carryforwards are expected to be utilized prior to their expiration.

The Company, Spire Missouri and Spire Alabama recognize the tax benefit from a tax position only if it is at least more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. Unrecognized tax benefits are reported as a reduction of a deferred tax asset for an operating loss carryforward to the extent the recognition of the benefit would impact the operating loss carryforward, pursuant to ASU 2013-11. The following table presents a reconciliation of the beginning and ending balances of unrecognized tax benefits:

	Spire								Spire Missouri
	2022			2021		2020			2022		2021		2020
Unrecognized tax benefits, beginning of year	$	16.4		$	13.2	$	10.7		$	16.1	$	13.0	$	10.4
Increases related to tax positions taken in current year		3.3			3.2		2.6			3.2		3.1		2.6
Reductions due to lapse of applicable statute of limitations		(0.1	)		—		(0.1	)		—		—		—
Unrecognized tax benefits, end of year	$	19.6		$	16.4	$	13.2		$	19.3	$	16.1	$	13.0

As of September 30, 2022 and 2021, the amounts of unrecognized tax benefits which, if recognized, would affect the effective tax rate were $4.0 and $3.6, respectively, for the Company and $3.7 and $3.3, respectively, for Spire Missouri. It is reasonably possible that events will occur in the next 12 months that could increase or decrease the amount of the unrecognized tax benefits. The Company and Spire Missouri do not expect that any such change will be significant to the balance sheets. Spire Alabama reported no unrecognized tax benefits for fiscal years 2022, 2021, and 2020.

The Company, Spire Missouri, and Spire Alabama record potential interest and penalties related to uncertain tax positions as interest expense and other income deductions, respectively. As of September 30, 2022 and 2021, interest accrued associated with uncertain tax positions was de minimis, and no penalties were accrued.

The Company, Spire Missouri, and Spire Alabama are no longer subject to examination for fiscal years prior to 2019, except to the extent the net operating losses from prior years are reviewed.

XML

Note 13 - Pension Plans and Other Postretirement Benefits

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Retirement Benefits [Text Block]

13. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

The pension plans of Spire consist of plans for employees at Spire Missouri, the employees of Spire Alabama and employees of the subsidiaries of Spire EnergySouth.

Spire Missouri and Spire Alabama have non-contributory, defined benefit, trusteed forms of pension plans covering the majority of their employees. Plan assets consist primarily of corporate and U.S. government obligations and a growth segment consisting of exposure to equity markets, commodities, real estate and international credit markets.

The net periodic pension cost includes components shown in the following table. 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.”

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	20.0		$	21.7		$	22.5		$	14.4		$	15.4		$	15.7		$	4.8		$	5.5		$	6.1
Interest cost on projected benefit obligation		21.5			20.7			22.6			14.7			14.2			15.8			4.7			4.6			4.9
Expected return on plan assets		(31.3	)		(31.6	)		(35.0	)		(22.7	)		(22.5	)		(24.6	)		(5.2	)		(5.8	)		(6.9	)
Amortization of prior service (credit) cost		(4.5	)		(3.1	)		(2.5	)		(1.9	)		(0.6	)		0.1			(2.4	)		(2.3	)		(2.4	)
Amortization of actuarial loss		11.9			14.9			14.4			9.6			11.0			11.3			2.4			3.9			3.1
Loss on lump-sum settlements and curtailments		33.6			18.2			31.6			27.3			11.6			26.6			6.3			6.6			5.0
Subtotal		51.2			40.8			53.6			41.4			29.1			44.9			10.6			12.5			9.8
Regulatory adjustment		12.5			20.6			6.6			9.9			19.0			3.9			1.7			0.7			1.8
Net pension cost	$	63.7		$	61.4		$	60.2		$	51.3		$	48.1		$	48.8		$	12.3		$	13.2		$	11.6

Other changes in plan assets and pension benefit obligations recognized in other comprehensive income or loss include the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial (gain) loss	$	(16.9	)	$	(8.1	)	$	68.0		$	0.9		$	(0.9	)	$	37.8		$	(16.0	)	$	(1.5	)	$	24.4
Amortization of actuarial loss		(11.9	)		(14.9	)		(14.4	)		(9.6	)		(11.0	)		(11.3	)		(2.4	)		(3.9	)		(3.1	)
Acceleration of loss recognized due to settlement		(33.6	)		(18.2	)		(31.7	)		(27.3	)		(11.6	)		(26.6	)		(6.3	)		(6.6	)		(5.1	)
Current year service credit		—			(17.9	)		(4.4	)		—			(17.9	)		(4.4	)		—			—			—
Amortization of prior service credit (cost)		4.5			3.1			2.5			1.9			0.6			(0.1	)		2.4			2.3			2.4
Subtotal		(57.9	)		(56.0	)		20.0			(34.1	)		(40.8	)		(4.6	)		(22.3	)		(9.7	)		18.6
Regulatory adjustment		56.3			57.3			(19.5	)		32.5			42.1			5.1			22.3			9.7			(18.6	)
Total recognized in OCI	$	(1.6	)	$	1.3		$	0.5		$	(1.6	)	$	1.3		$	0.5		$	—		$	—		$	—

Spire pension obligations are driven by separate plan and regulatory provisions governing Spire Missouri, Spire Alabama and Spire EnergySouth pension plans.

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.

In the fiscal year ended September 30, 2022, two Spire Missouri plans and two Spire Alabama plans met the criteria for settlement recognition, requiring re-measurement of the obligation under those plans using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rates for the Missouri plans were updated to 5.7% and 5.8%, respectfully, for each plan at September 30, 2022 (from 3.0%, respectfully, at September 30, 2021), and the discount rate for the Alabama plans were updated to 5.70% and 5.65%, respectfully, (from 3.1% and 3.0%, respectfully). Lump-sum payments recognized as settlements during fiscal year 2022 was $109.3 ($87.0 attributable to Spire Missouri and $22.3 to Spire Alabama). The Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan, and in fiscal 2022 the amortization periods range from 11.4 years to 12.3 years. Therefore, no lump sum settlement expenses were recorded in the fiscal year ended September 30, 2022.

In the fiscal year ended September 30, 2021, two Spire Missouri plans and one Spire Alabama plan met the criteria for settlement recognition, requiring re-measurement of the obligation under those plans using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rates for the Missouri plans were updated to 3.00% at September 30, 2021 (from 2.85% at September 30, 2020), and the discount rate for the Alabama plan was updated to 3.10% (from 2.95%). Lump-sum payments recognized as settlements during fiscal year 2021 was $67.5 ($44.6 attributable to Spire Missouri and $22.9 to Spire Alabama). The Alabama regulatory tariff requires that settlement losses be amortized over the remaining actuarial life of the individuals in the plan, and in fiscal 2021 the amortization periods range from 11.4 years to 11.7 years. Therefore, no lump sum settlement expenses were recorded in the fiscal year ended September 30, 2021.

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. 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.

The following table shows the reconciliation of the beginning and ending balances of the pension benefit obligation at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	689.6		$	732.6		$	479.0		$	505.2		$	149.4		$	163.5
Service cost		20.0			21.7			14.4			15.4			4.8			5.5
Interest cost	21.5				20.7			14.7			14.2			4.7			4.6
Actuarial (gain) loss		(173.9	)		6.6			(116.2	)		11.0			(42.4	)		(1.8	)
Plan amendments		—			(17.9	)		—			(17.9	)		—			—
Settlement loss		33.4			12.3			27.9			8.2			5.6			4.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.9	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Benefit obligation, end of year	$	464.4		$	689.6		$	320.6		$	479.0		$	97.8		$	149.4
Accumulated benefit obligation, end of year	$	457.1		$	673.3		$	315.0		$	465.4		$	96.2		$	146.9

In 2022, all qualified plans experienced significant actuarial gains. These gains were driven by the discount rates increasing between 2.55% and 2.80% compared to the prior fiscal year, combined with lump sum rates that increased significantly since the prior fiscal year, which decreased the liability and contributed to liability gains. These gains were only partly offset by the losses on actual lump sum benefit payments compared to assumed amounts across all the plans. Actuarial losses 2021 were primarily due to the decrease in lump sum discount rates in one Spire Missouri plan and the losses on actual lump sum benefit payments compared to assumed amounts across all the plans. Except for Spire Alabama in 2021, these losses more than offset the gains that resulted from the increase in discount rates used to calculate the benefit obligations for each year.

The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets, beginning of year	$	498.9		$	473.1		$	364.0		$	336.2		$	82.8		$	88.6
Actual return on plan assets		(92.5	)		58.8			(66.7	)		42.7			(15.6	)		9.6
Employer contributions		52.4			53.4			37.8			42.2			14.4			11.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.8	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Fair value of plan assets, end of year	$	332.7		$	498.9		$	235.9		$	364.0		$	57.3		$	82.8
Funded status of plans, end of year	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

The following table sets forth the amounts recognized in the balance sheets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Current liabilities	$	(1.1	)	$	(0.8	)	$	(1.1	)	$	(0.8	)	$	—		$	—
Noncurrent liabilities		(130.6	)		(189.9	)		(83.6	)		(114.2	)		(40.5	)		(66.6	)
Total	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

Pre-tax amounts recognized in accumulated other comprehensive loss not yet recognized as components of net periodic pension cost consist of:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial loss	$	132.0		$	194.6		$	93.6		$	129.6		$	41.2		$	66.1
Prior service credit		(35.7	)		(40.3	)		(18.1	)		(20.1	)		(16.3	)		(18.7	)
Subtotal		96.3			154.3			75.5			109.5			24.9			47.4
Adjustments for amounts included in regulatory assets		(93.1	)		(149.5	)		(72.3	)		(104.7	)		(24.9	)		(47.4	)
Total	$	3.2		$	4.8		$	3.2		$	4.8		$	—		$	—

The assumptions used to calculate net periodic pension costs for Spire Missouri are as follows:

	2022		2021		2020
Weighted average discount rate - Spire Missouri East plan		3.00%		2.85%		3.20%
Weighted average discount rate - Spire Missouri West plan		3.00%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

The assumptions used to calculate net periodic pension costs for Spire Alabama are as follows:

	2022		2021		2020
Weighted average discount rate		3.10%/3.0%		2.95%/2.80%		3.25%/3.20%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

The assumptions used to calculate the benefit obligations are as follows:

	2022		2021
Weighted average discount rate - Spire Missouri East plan		5.70%		3.00%
Weighted average discount rate - Spire Missouri West plan		5.80%		3.00%
Weighted average discount rate - Spire Alabama plans		5.70%/5.65%		3.1%/3.0%
Weighted average rate of future compensation increase		3.00%		3.00%
Cash balance interest crediting rate - Spire Alabama / Spire Missouri		4.25%		4.25%

The following table sets forth the year-end projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for plans that have a projected benefit obligation and an accumulated benefit obligation in excess of plan assets:

	Spire				Spire Missouri				Spire Alabama
	2022		2021		2022		2021		2022		2021
Projected benefit obligation	$	464.4	$	689.6	$	320.6	$	479.0	$	97.8	$	149.4
Accumulated benefit obligation		457.1		673.3		315.0		465.4		96.2		146.9
Fair value of plan assets		332.7		498.9		235.9		364.0		57.3		82.8

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		74.3	%		70.0	%		74.5	%
Liability hedging assets		30.0	%		22.8	%		30.0	%		23.1	%
Cash and cash equivalents		—	%		2.9	%		—	%		2.4	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Spire Alabama	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		68.7	%		70.0	%		72.8	%
Liability hedging assets		30.0	%		25.3	%		30.0	%		25.5	%
Cash and cash equivalents		—	%		6.0	%		—	%		1.7	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

The Spire Inc. Retirement Plans Committee is responsible for the administration of the various plans, and all payments under the plans require direction of that committee. The Spire Inc. Defined Benefit Plan Investment Review Committee utilizes an Outsourced Chief Investment Officer (OCIO) model where investment decisions are outsourced to investment consultants (Willis Towers Watson), who in turn become co-fiduciaries with the committee.

For all plans, the Company employs a total return investment approach whereby a mix of equities and fixed income investments are used to maximize the long-term return of plan assets with a prudent level of risk. Risk tolerance is established through consideration of plan liabilities, plan funded status, corporate financial condition and market conditions. The Company has developed an investment strategy that focuses on asset allocation, diversification and quality guidelines. The investment goals are to obtain an adequate level of return to meet future obligations of the plan by providing above average risk-adjusted returns with a risk exposure in the mid-range of comparable funds. Comparative market and peer group benchmarks are utilized to ensure that investment managers are performing satisfactorily. The Company seeks to maintain an appropriate level of diversification to minimize the risk of large losses in a single asset class. Accordingly, plan assets for the pension plans do not have a concentration of assets in a single entity, industry, country, commodity or class of investment fund.

The following table sets forth expected pension benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter, for Spire, Spire Missouri, and Spire Alabama:

	2023		2024		2025		2026		2027			2028- 2032
Spire	$	55.8	$	52.3	$	47.2	$	44.0	$	43.5	$	202.9
Spire Missouri		41.4		38.9		33.9		30.8		29.6		137.5
Spire Alabama		11.3		10.2		9.9		9.7		10.4		46.4

The funding policy of Spire Missouri and Spire Alabama 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. Spire Missouri’s contributions to the pension plans in fiscal 2023 are anticipated to be $44.5 into the qualified trusts, and $1.1 into the non-qualified plans. Spire Alabama’s contributions to the pension plans in fiscal 2022 are anticipated to be $13.8 into the qualified trusts.

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, the Missouri West 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.

Net periodic postretirement benefit costs consist of the following components:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	7.5		$	7.3		$	5.9		$	6.3		$	6.2		$	5.3		$	1.1		$	0.9		$	0.4
Interest cost on accumulated postretirement benefit obligation		6.0			6.0			6.3			4.5			4.5			4.7			1.4			1.3			1.4
Expected return on plan assets		(16.8	)		(16.1	)		(16.7	)		(11.3	)		(10.9	)		(11.4	)		(5.2	)		(4.9	)		(5.0	)
Amortization of prior service cost (credit)		1.0			1.0			(0.5	)		0.7			0.7			(0.2	)		0.3			0.3			(0.3	)
Amortization of actuarial gain		(2.2	)		(1.6	)		(2.0	)		(1.9	)		(1.5	)		(2.0	)		—			—			—
Subtotal		(4.5	)		(3.4	)		(7.0	)		(1.7	)		(1.0	)		(3.6	)		(2.4	)		(2.4	)		(3.5	)
Regulatory adjustment		3.3			13.2			16.0			5.0			15.0			17.7			(1.8	)		(1.8	)		(1.8	)
Net postretirement benefit (income) cost	$	(1.2	)	$	9.8		$	9.0		$	3.3		$	14.0		$	14.1		$	(4.2	)	$	(4.2	)	$	(5.3	)

Other changes in plan assets and postretirement benefit obligations recognized in OCI include the following:

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial loss (gain)	$	15.8		$	(41.0	)	$	(7.3	)	$	9.8		$	(29.0	)	$	(7.6	)	$	5.9		$	(9.9	)	$	1.1
Amortization of actuarial gain		2.2			1.6			2.0			1.9			1.5			2.0			—			—			—
Current year prior service (cost) credit		(6.3	)		—			15.8			(1.1	)		—			9.5			(5.2	)		—			6.3
Amortization of prior service (cost) credit		(1.0	)		(1.0	)		0.5			(0.7	)		(0.7	)		0.2			(0.3	)		(0.3	)		0.3
Subtotal		10.7			(40.4	)		11.0			9.9			(28.2	)		4.1			0.4			(10.2	)		7.7
Regulatory adjustment		(10.7	)		40.4			(11.0	)		(9.9	)		28.2			(4.1	)		(0.4	)		10.2			(7.7	)
Total recognized in OCI	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—

Pursuant to a MoPSC Order, the return on plan assets is based on the market-related value of plan assets implemented prospectively over a four-year period. Gains and losses not yet includible in postretirement benefit cost are amortized only to the extent that such gain or loss exceeds 10% of the greater of the accumulated postretirement benefit obligation or the market-related value of plan assets. Such excess is amortized over the average remaining service life of active participants. Effective April 18, 2018, the recovery in rates for Spire Missouri’s postretirement benefit plans is based on an annual allowance of $8.6. The difference between these amounts and postretirement benefit cost based on 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.

The following table sets forth the reconciliation of the beginning and ending balances of the postretirement benefit obligation at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	204.2		$	212.3		$	151.7		$	158.4		$	48.0		$	48.3
Service cost		7.5			7.3			6.3			6.2			1.1			0.9
Interest cost		6.0			6.0			4.5			4.5			1.4			1.3
Actuarial (gain) loss		(52.6	)		(7.5	)		(37.7	)		(6.7	)		(13.6	)		0.7
Plan amendments		(6.2	)		—			(1.0	)		—			(5.2	)		—
Retiree drug subsidy program		0.2			—			0.2			—			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Benefit obligation, end of year	$	148.1		$	204.2		$	114.8		$	151.7		$	29.9		$	48.0

In fiscal 2022, the actuarial gains for all qualified Spire plans were driven by the increase in the discount rate used to calculate the benefit obligation. In fiscal 2021, the actuarial gains for Spire and Spire Missouri were driven by the increase in the discount rate used to calculate the benefit obligation. For Spire Alabama, this gain was more than offset by the loss associated with an update to the trend assumption.

The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets at beginning of year	$	326.9		$	291.0		$	221.7		$	199.2		$	99.4		$	87.0
Actual return on plan assets		(51.6	)		49.7			(36.2	)		33.1			(14.3	)		15.6
Employer contributions		0.4			0.1			0.4			0.1			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Fair value of plan assets, end of year	$	264.7		$	326.9		$	176.7		$	221.7		$	83.3		$	99.4
Funded status of plans, end of year	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4		$	51.4

The following table sets forth the amounts recognized in the balance sheets at September 30:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022		2021
Noncurrent assets	$	151.6		$	170.2		$	96.9		$	117.5		$	53.4	$	51.4
Current liabilities		(0.3	)		(0.5	)		(0.3	)		(0.5	)		—		—
Noncurrent liabilities		(34.7	)		(47.0	)		(34.7	)		(47.0	)		—		—
Total	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4	$	51.4

Pre-tax amounts recognized in accumulated other comprehensive loss not yet recognized as components of net periodic postretirement benefit cost consist of:

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial gain	$	(83.3	)	$	(101.2	)	$	(74.2	)	$	(85.8	)	$	(5.6	)	$	(11.5	)
Prior service cost (credit)		7.1			14.6			7.9			9.7			(0.8	)		4.9
Subtotal		(76.2	)		(86.6	)		(66.3	)		(76.1	)		(6.4	)		(6.6	)
Adjustments for amounts included in regulatory assets		76.2			86.6			66.3			76.1			6.4			6.6
Total	$	—		$	—		$	—		$	—		$	—		$	—

The assumptions used to calculate net periodic postretirement benefit costs for Spire Missouri are as follows:

	2022		2021		2020
Weighted average discount rate - Spire Missouri plans		2.95%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets - Spire Missouri plans		5.75%		5.75%		6.25%

The assumptions used to calculate net periodic postretirement benefit costs for Spire Alabama are as follows:

	2022		2021		2020
Weighted average discount rate		2.95%		2.75%		3.15%
Expected long-term rate of return on plan assets	5.00%/6.25%		5.00%/6.25%		5.00%/6.25%

The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

The assumptions used to calculate the accumulated postretirement benefit obligations are as follows:

	2022		2021
Weighted average discount rate - Spire Alabama plans		5.80%		2.95%
Weighted average discount rate - Spire Missouri plans		5.80%		2.95%
Weighted average rate of future compensation increase - Spire Missouri East plans		3.00%		3.00%

The assumed medical cost trend rates at September 30 are as follows:

	2022		2021
Medical cost trend assumed for next year - Spire Missouri		6.75%		7.00%
Medical cost trend assumed for next year - Spire Alabama		6.75%		7.00%
Rate to which the medical cost trend rate is assumed to decline (the ultimate medical cost trend rate)		5.00%		5.00%
Year the rate reaches the ultimate trend		2028		2028

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri	Target			2022 Actual			2021 Actual
Equity securities		60.0	%		58.7	%		59.2	%
Debt securities		40.0	%		40.5	%		38.9	%
Cash and cash equivalents		—	%		0.8	%		1.9	%
Total		100.0	%		100.0	%		100.0	%

Spire Alabama	Target			2022 Actual			2021 Actual
Equity securities		60.5	%		57.7	%		60.5	%
Debt securities		39.5	%		42.3	%		39.5	%
Total		100.0	%		100.0	%		100.0	%

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 and Rabbi Trusts as external funding mechanisms. Their investment policies seek to maximize investment returns consistent with their tolerance for risk. Outside investment management specialists are utilized in each asset class. Such specialists are provided with guidelines, where appropriate, designed to ensure that the investment portfolio is managed in accordance with policy. Performance and compliance with the guidelines is regularly monitored. Spire Missouri and Spire Alabama currently invest in mutual funds which are rebalanced periodically to the target allocation. The mutual funds are diversified across U.S. stock and bond markets, and for Spire Alabama, international stock markets.

The following table sets forth expected postretirement benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter for Spire, Spire Missouri, and Spire Alabama:

	2023		2024		2025		2026		2027			2028 - 2032
Spire	$	13.7	$	14.4	$	14.6	$	14.5	$	14.7	$	69.5
Spire Missouri		11.6		12.2		12.3		12.2		12.2		55.7
Spire Alabama		1.9		2.0		2.1		2.1		2.2		11.9

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. For both Spire Missouri and Spire Alabama there are no anticipated contributions to the postretirement plans in fiscal 2023.

Other Plans

Spire Services Inc. sponsors a 401(k) plan that cover substantially all employees of Spire Inc. and its subsidiaries. The plan allows employees to contribute a portion of their base pay in accordance with specific guidelines. The cost of the defined contribution plan for Spire Inc. totaled $15.5, $15.5, and $13.6 for fiscal years 2022, 2021, and 2020, respectively. Spire Missouri provides a match of such contributions within specific limits. The cost of the defined contribution plan for Spire Missouri amounted to $10.9, $10.9, and $9.5 for fiscal years 2022, 2021, and 2020, respectively. Spire Alabama also provides a match of employee contributions within specific limits. The cost of the defined contribution plan for Spire Alabama amounted to $3.6, $2.9, and $3.4 for fiscal years 2022, 2021, and 2020, respectively.

Fair Value Measurements of Pension and Other Postretirement Plan Assets

Spire

The table below categorizes the fair value measurements of the Spire pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	11.5	$	—	$	—	$	11.5
Equity funds - global (including U.S.)		—		122.2		—		122.2
Real asset funds		—		61.0		—		61.0
Debt securities:
U.S. bond funds		42.3		—		—		42.3
U.S. government index funds		36.1		—		—		36.1
Global funds (including U.S.)		—		59.6		—		59.6
Total	$	89.9	$	242.8	$	—	$	332.7
As of September 30, 2021
Cash and cash equivalents	$	10.6	$	—	$	—	$	10.6
Equity funds - global (including U.S.)		—		201.2		—		201.2
Real asset funds		—		87.7		—		87.7
Debt securities:
U.S. bond funds		58.4		—		—		58.4
U.S. government index funds		60.1		—		—		60.1
Global funds (including U.S.)		—		80.9		—		80.9
Total	$	129.1	$	369.8	$	—	$	498.9

The table below categorizes the fair value measurements of Spire’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
U.S. stock/bond mutual funds		177.1		69.4		—		246.5
International fund		0.8		13.9		—		14.7
Total	$	181.4	$	83.3	$	—	$	264.7
As of September 30, 2021
Cash and cash equivalents	$	3.1	$	—	$	—	$	3.1
U.S. stock/bond mutual funds		223.2		82.5		—		305.7
International fund		1.2		16.9		—		18.1
Total	$	227.5	$	99.4	$	—	$	326.9

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

Spire Missouri

The table below categorizes the fair value measurements of Spire Missouri’s pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	5.7	$	—	$	—	$	5.7
Equity funds - global (including U.S.)		—		85.7		—		85.7
Real asset funds		—		47.2		—		47.2
Debt securities:
U.S. bond funds		29.4		—		—		29.4
U.S. government index funds		24.6		—		—		24.6
Global funds (including U.S.)		—		43.3		—		43.3
Total	$	59.7	$	176.2	$	—	$	235.9
As of September 30, 2021
Cash and cash equivalents	$	8.3	$	—	$	—	$	8.3
Equity funds - global (including U.S.)		—		148.6		—		148.6
Real asset funds		—		59.2		—		59.2
Debt securities:
U.S. bond funds		38.4		—		—		38.4
U.S. government index funds		45.6		—		—		45.6
Global funds (including U.S.)		—		63.9		—		63.9
Total	$	92.3	$	271.7	$	—	$	364.0

The table below categorizes the fair value measurements of Spire Missouri’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	2.7	$	—	$	—	$	2.7
U.S. stock/bond mutual funds		174.0		—		—		174.0
Total	$	176.7	$	—	$	—	$	176.7
As of September 30, 2021
Cash and cash equivalents	$	2.4	$	—	$	—	$	2.4
U.S. stock/bond mutual funds		219.3		—		—		219.3
Total	$	221.7	$	—	$	—	$	221.7

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

Spire Alabama

The table below categorizes the fair value measurements of Spire Alabama’s pension plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
Equity funds - global (including U.S.)		—		21.6		—		21.6
Real asset funds		—		8.1		—		8.1
Debt securities:
U.S. bond funds		7.7		—		—		7.7
U.S. government index funds		6.8		—		—		6.8
Global funds (including U.S.)		—		9.6		—		9.6
Total	$	18.0	$	39.3	$	—	$	57.3
As of September 30, 2021
Cash and cash equivalents	$	1.4	$	—	$	—	$	1.4
Equity funds - global (including U.S.)		—		32.3		—		32.3
Real asset funds		—		14.6		—		14.6
Debt securities:
U.S. bond funds		12.3		—		—		12.3
U.S. government index funds		8.9		—		—		8.9
Global funds (including U.S.)		—		13.3		—		13.3
Total	$	22.6	$	60.2	$	—	$	82.8

The table below categorizes the fair value measurements of Spire Alabama’s postretirement plan assets:

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
U.S. stock/bond mutual funds	$	—	$	69.4	$	—	$	69.4
International fund		—		13.9		—		13.9
Total	$	—	$	83.3	$	—	$	83.3
As of September 30, 2021
U.S. stock/bond mutual funds	$	—	$	82.5	$	—	$	82.5
International fund		—		16.9		—		16.9
Total	$	—	$	99.4	$	—	$	99.4

Cash and cash equivalents include money market mutual funds valued based on quoted market prices. Debt securities are valued based on broker/dealer quotations or by using observable market inputs. The stock and bond mutual funds are valued at the quoted market price of the identical securities.

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Note 14 - Information by Operating Segment

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

The Company has two reportable segments: Gas Utility and Gas Marketing. 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. Other components of the Company’s consolidated information include:

•  Spire STL Pipeline, a subsidiary of Spire providing interstate natural gas pipeline transportation services;

•  Spire Storage, a subsidiary of Spire providing interstate natural gas storage services;

•  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 and Spire Alabama, sales of natural gas from Spire Missouri to Spire Marketing, sales of natural gas from Spire Alabama to Spire Marketing, propane transportation services provided by Spire NGL Inc. to Spire Missouri, and propane storage services provided by Spire Missouri to Spire NGL Inc.

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 other non-recurring or unusual items such as certain regulatory, legislative or GAAP standard-setting actions.

	Gas		Gas
2022	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,945.6	$	234.9	$	18.0		$	—		$	2,198.5
Intersegment revenues		0.5		—		51.2			(51.7	)		—
Total Operating Revenues		1,946.1		234.9		69.2			(51.7	)		2,198.5
Operating Expenses
Natural gas		788.8		171.4		—			(36.3	)		923.9
Other operation and maintenance		413.3		14.6		37.1			(15.4	)		449.6
Depreciation and amortization		227.9		1.4		8.0			—			237.3
Taxes, other than income taxes		176.2		0.6		2.7			—			179.5
Total Operating Expenses		1,606.2		188.0		47.8			(51.7	)		1,790.3
Operating Income	$	339.9	$	46.9	$	21.4		$	—		$	408.2
Net Economic Earnings (Loss)	$	202.7	$	27.0	$	(13.4	)	$	—		$	216.3
Capital Expenditures	$	528.6	$	0.9	$	22.7		$	—		$	552.2

	Gas		Gas
2021	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	2,118.2	$	96.5	$	20.8		$	—		$	2,235.5
Intersegment revenues		1.1		—		46.9			(48.0	)		—
Total Operating Revenues		2,119.3		96.5		67.7			(48.0	)		2,235.5
Operating Expenses
Natural gas		961.7		18.8		0.1			(34.3	)		946.3
Other operation and maintenance		422.2		17.1		40.2			(13.7	)		465.8
Depreciation and amortization		204.4		1.2		7.5			—			213.1
Taxes, other than income taxes		157.0		0.9		2.2			—			160.1
Impairments		—		—		—			—			—
Total Operating Expenses		1,745.3		38.0		50.0			(48.0	)		1,785.3
Operating Income	$	374.0	$	58.5	$	17.7		$	—		$	450.2
Net Economic Earnings (Loss)	$	230.6	$	47.0	$	(11.3	)	$	—		$	266.3
Capital Expenditures	$	590.4	$	0.7	$	33.7		$	—		$	624.8

	Gas		Gas
2020	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,751.8	$	87.9	$	15.7		$	—		$	1,855.4
Intersegment revenues		0.2		—		42.1			(42.3	)		—
Total Operating Revenues		1,752.0		87.9		57.8			(42.3	)		1,855.4
Operating Expenses
Natural gas		660.2		65.1		0.4			(29.6	)		696.1
Other operation and maintenance		421.3		11.8		38.2			(12.7	)		458.6
Depreciation and amortization		189.7		0.6		7.0			—			197.3
Taxes, other than income taxes		146.5		1.1		0.8			—			148.4
Impairments		—		—		148.6			—			148.6
Total Operating Expenses		1,417.7		78.6		195.0			(42.3	)		1,649.0
Operating Income (Loss)	$	334.3	$	9.3	$	(137.2	)	$	—		$	206.4
Net Economic Earnings (Loss)	$	213.4	$	9.1	$	(14.7	)	$	—		$	207.8
Capital Expenditures	$	547.8	$	3.6	$	87.0		$	—		$	638.4

Total Assets at End of Year	2022			2021			2020
Gas Utility	$	8,042.8		$	7,615.4		$	6,716.2
Gas Marketing		638.7			466.1			182.7
Other		2,895.2			2,351.7			2,443.5
Eliminations		(1,493.0	)		(1,076.8	)		(1,101.2	)
Total Assets	$	10,083.7		$	9,356.4		$	8,241.2

Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings	2022			2021			2020
Net Income	$	220.8		$	271.7		$	88.6
Adjustments, pre-tax:
Impairments		—			—			148.6
Missouri regulatory adjustments		—			(9.0	)		—
Fair value and timing adjustments		(11.4	)		3.3			2.5
Acquisition, divestiture and restructuring activities		—			(1.3	)		—
Income tax effect of adjustments		6.9			1.6			(31.9	)
Net Economic Earnings	$	216.3		$	266.3		$	207.8

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Note 15 - Regulatory Matters

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Public Utilities Disclosure [Text Block]

As discussed below for Spire Missouri and Spire Alabama, 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 regulatory liabilities related to the PGA clauses and the GSA rider are both labeled Unamortized Purchased Gas Adjustments herein.

The following regulatory assets and regulatory liabilities were reflected in the Balance Sheets as of September 30, 2022 and 2021.

	Spire				Spire Missouri				Spire Alabama
September 30	2022		2021		2022		2021		2022		2021
Regulatory Assets:
Current:
Pension and postretirement benefit costs	$	—	$	31.1	$	—	$	21.9	$	—	$	8.2
Unamortized purchased gas adjustments		322.2		243.5		275.1		242.8		43.8		—
Other		33.2		31.9		13.0		11.6		13.1		10.6
Total Current Regulatory Assets		355.4		306.5		288.1		276.3		56.9		18.8
Noncurrent:
Future income taxes due from customers		137.8		132.9		129.2		124.2		2.2		2.2
Pension and postretirement benefit costs		294.5		313.8		222.9		226.0		66.5		82.9
Cost of removal		493.7		431.9		25.2		34.9		468.5		397.0
Energy efficiency		57.2		47.6		57.2		47.6		—		—
Other		129.2		67.3		113.1		50.4		1.0		1.2
Total Noncurrent Regulatory Assets		1,112.4		993.5		547.6		483.1		538.2		483.3
Total Regulatory Assets	$	1,467.8	$	1,300.0	$	835.7	$	759.4	$	595.1	$	502.1
Regulatory Liabilities:
Current:
Pension and postretirement benefit costs	$	—	$	5.8	$	—	$	3.6	$	—	$	2.2
Unamortized purchased gas adjustments		—		11.0		—		—		—		10.2
Other		3.7		17.8		—		13.5		—		1.0
Total Current Regulatory Liabilities		3.7		34.6		—		17.1		—		13.4
Noncurrent:
Deferred taxes due to customers		145.3		127.5		127.9		110.2		—		—
Pension and postretirement benefit costs		172.6		159.3		143.6		131.4		19.4		19.8
Accrued cost of removal		32.9		36.2		—		4.9		—		—
Unamortized purchased gas adjustments		53.0		284.3		53.0		284.3		—		—
Other		14.4		13.6		7.3		8.0		3.6		3.6
Total Noncurrent Regulatory Liabilities		418.2		620.9		331.8		538.8		23.0		23.4
Total Regulatory Liabilities	$	421.9	$	655.5	$	331.8	$	555.9	$	23.0	$	36.8

A portion of the Company’s regulatory assets are not earning a return and are shown in the schedule below:

	Spire				Spire Missouri
September 30	2022		2021		2022		2021
Pension and postretirement benefit costs	$	152.9	$	165.7	$	152.9	$	165.7
Future income taxes due from customers		135.6		130.7		129.2		124.2
Unamortized purchase gas adjustments		275.1		242.8		275.1		242.8
Other		122.7		86.0		122.7		86.0
Total Regulatory Assets Not Earning a Return	$	686.3	$	625.2	$	679.9	$	618.7

Like all the Company’s regulatory assets, these regulatory assets 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 normally about one year, but a portion will be three years due to the Filing Adjustment Factor discussed below. 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

As authorized by the MoPSC, the PGA clause allows Spire Missouri to flow through to customers, subject to prudence review by the MoPSC, the cost of purchased gas supplies. To better match customer billings with market natural gas prices, Spire Missouri is allowed to file to modify, on a periodic basis, the level of gas costs in its PGA. Certain provisions of the PGA clause are included below:

•  Spire Missouri has a risk management policy that allows for the purchase of natural gas derivative instruments with the goal of managing price risk associated with purchasing natural gas on behalf of its customers. The MoPSC clarified that costs, cost reductions, and carrying costs associated with the Utility’s use of natural gas derivative instruments are gas costs recoverable through the PGA mechanism.

•  The tariffs allow Spire Missouri flexibility to make up to three discretionary PGA changes during each year, in addition to its mandatory November PGA change, so long as such changes are separated by at least two months.

•  Spire Missouri is authorized to apply carrying costs to all over- or under-recoveries of gas costs, including costs and cost reductions associated with the use of derivative instruments, including cash payments for margin deposits.

•  Pre-tax income from off-system sales and capacity release revenues is shared with customers (such that customers receive 75% and Spire Missouri receives 25%), with an estimated amount assumed in PGA rates.

Pursuant to the provisions of the PGA clause, the difference between actual costs incurred and costs recovered through the application of the PGA clause, as well as the difference between the actual amount of off-system sales and capacity release revenues allocated to customers and the estimated amount assumed in PGA rates, are reflected as a regulatory asset or liability at the end of the fiscal year. At that time, the balance is classified as a current asset or current liability and recovered from, or credited to, customers over an annual period commencing in the subsequent November. The balance in the current account is amortized as amounts are reflected in customer billings.

On March 7, 2018, the MoPSC issued its order in two general rate cases (docketed as GR-2017-0215 and GR-2017-0216), approving new tariffs that became effective on April 19, 2018. Certain provisions of the order allowed less future recovery of certain deferred or capitalized costs than estimated based upon previous rate proceedings, and management determined that the related regulatory assets should be written down. Spire Missouri filed an appeal of portions of the MoPSC’s order, including the disallowance of certain pension costs. On February 9, 2021, the Missouri Supreme Court issued its decision, reversing the MoPSC’s order with respect to certain pension costs. The case was remanded back to the MoPSC with directions that $9.0 in pension assets that accrued between 1994 and 1996 be added to the Company’s prepaid pension asset. Based on the court’s decision, the Company increased its noncurrent regulatory asset for “Pension and postretirement benefit costs” and reduced operation and maintenance expense for the three months ended March 31, 2021. Like the original write-down in 2018, this adjustment is excluded for the net economic earnings financial measure. The remand issue is being considered as part of Spire Missouri’s ongoing general rate case (discussed below).

The Infrastructure System Replacement Surcharge (ISRS) allows Spire Missouri expedited recovery for its investment to replace its worn out or deteriorated infrastructure without the necessity of a formal rate case. On November 19, 2019, the Missouri Western District Court of Appeals issued rulings (“ISRS rulings”) that determined certain capital investments in 2016 through 2018 were not eligible for recovery under the ISRS. As a result, Spire Missouri recorded a $12.2 provision for fiscal year 2019, which was excluded for the net economic earnings financial measure. This matter was settled by the end of fiscal 2020. On December 23, 2021, Spire Missouri filed a new ISRS case, its first under the ISRS statute amendments of 2020, seeking accelerated recovery of $11.3 in annual revenue for eligible pipe replacement from June through December 2021. On April 21, 2022, the MoPSC approved a settlement among the parties to resolve the ISRS case, resulting in $8.5 in incremental annual revenue effective in May 2022. On June 3, 2022, Spire Missouri filed a new ISRS case, its first with the inclusion of the "Contractor Bid" requirement identified in the ISRS statute amendments of 2020, seeking accelerated recovery of $11.9 in annual revenue for eligible pipe replacement from January through June 2022. On October 5, 2022, the MoPSC approved a settlement among the parties to resolve the ISRS case, resulting in $10.5 in incremental revenue effective October 21, 2022, bringing total annual ISRS revenue to $19.0.

In September 2020, Spire Missouri, the MoPSC staff and the Office of Public Counsel (OPC) reached a Unanimous Stipulation and Agreement regarding Spire Missouri’s request for an Accounting Authority Order (AAO) pertaining to certain costs and lost customer fee revenue related to the COVID-19 pandemic. In October 2020, the MoPSC issued an order approving that agreement and granting an AAO for the period of March 1, 2020 through March 31, 2021. As part of the 2021 rate order discussed below, the settled balance of deferred costs, including foregone late payment fees and reconnect/disconnect fees that Spire Missouri was authorized to defer, totaled $6.2 and will be recovered through a five-year amortization of a regulatory asset.

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 tariffs, Spire Missouri invoiced the cost of gas and associated penalties totaling $195.8 to non-compliant marketers pursuant to the MoPSC-approved OFO tariff and recorded accounts receivable. Recoveries collected will be an offset to cost of natural gas for firm utility customers through the 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. Some marketers filed complaints with the MoPSC requesting review of the transactions between them and Spire Missouri. Through the first quarter of fiscal 2022, the Company had no reason to believe the MoPSC would not follow the tariff and had determined collection was probable, so the entire amount was recognized. 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. Pursuant to the approved settlement, the marketers have begun making payments to Spire Missouri that will be credited to the PGA/ACA, the marketer complaints have been dismissed at the MoPSC, and Spire Missouri has dismissed its federal lawsuits against the marketers. Spire Missouri is not subject to any upstream OFO penalties on any interstate pipelines.

As a result of the significant net deferred gas costs and average inventory cost in the second quarter of fiscal 2021, primarily due to Winter Storm Uri, Spire Missouri filed for and received MoPSC approval for an adjustment to the PGA tariff to increase a Filing Adjustment Factor (FAF) credit on customers' bills for three years. This helps customers by lowering the net PGA rate to mitigate impacts from Winter Storm Uri costs and the increased gas market from 2020 to 2021. All gas costs will eventually be recovered by Spire Missouri through the PGA or ACA mechanisms and carrying costs will be applied per the terms of the tariff.

Spire Missouri is able to sell excess natural gas supply and capacity to third parties off-system, resulting in significant savings to its firm utility customers through the gas incentive mechanisms of its PGA as described above. Spire Missouri retains 25% and passes 75% through to its customers as gas cost savings. During Winter Storm Uri, Spire Missouri had an unusually large off-system sale resulting in $100.0 of incremental gross revenue. Due to the nature and magnitude of this particular transaction, Spire Missouri initially deferred recognition of its 25% share and established a regulatory liability to allow time to assess the transaction in light of the open rate proceeding. When the regulatory treatment became clear in the fourth quarter of fiscal 2021, the Company reversed the liability and recorded the amount in operating revenues.

The MoPSC approved compliance tariffs with an effective date of December 23, 2021, in Spire Missouri’s general rate case GR-2021-0108. 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 decision, as reflected in the amended report and order dated November 12, 2021, revised the MoPSC’s long-standing position regarding Spire Missouri’s compliance with the FERC Uniform System of Accounts (USOA) on the capitalization of prudently incurred non-operational overheads. The amended report and order required Spire Missouri to cease capitalization of these overhead costs at the time new rates went into effect until a MoPSC staff audit of their revised interpretation of compliance with the USOA framework could be completed. MoPSC staff completed this audit and filed its audit report on March 18, 2022. The report recommends changes to Spire Missouri’s overhead capitalization rates based upon its new time study and the results of the audit. On April 13, 2022, the MoPSC issued an Order Authorizing Accounting Treatment clarifying that Spire Missouri may defer all non-operational overheads from December 23, 2021 forward into a regulatory asset for future review by the MoPSC in an appropriate proceeding. Based on Spire Missouri’s assessment of recoverability, the total amount deferred under this order was $42.8 through September 30, 2022, comprising:

   • $19.0 in accordance with new capitalization rates determined by the study and audit;

   • $18.8 of prudent costs which are in excess of the capitalization rates determined by the study and audit; and

   • $5.0 of prudent costs related to the April 2022 ISRS settlement discussed above.

On April 1, 2022, Spire Missouri filed tariff sheets to initiate a new general rate case proceeding which is intended to address the deferred amounts, along with other matters, and is expected to be resolved in the first half of fiscal 2023. The proposed tariff changes include revised rate schedules designed to produce an annual net increase in Spire Missouri’s gas revenues of approximately $151.9. Intervenor direct testimony was filed in late August and early September 2022. The MoPSC has set a test year ending September 30, 2021, adjusted for known and measurable rate base, revenue and expense items through May 31, 2022, with a true-up period through September 30, 2022. On October 7, 2022, Spire Missouri and various intervenors filed rebuttal testimony. MoPSC staff also filed updated accounting schedules reflecting a revised revenue requirement of $71.0. Local public hearings concluded in mid- October 2022. Following these hearings, 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. A hearing regarding this Stipulation is currently set for November 18, 2022. The remainder of the procedural schedule has been suspended, pending MoPSC action on the Stipulation. If approved, the Stipulation would, among other things, authorize $78.0 in new base rate revenue (with rates effective no later than January 1, 2023), and authorize recovery of deferred overheads through amortization of the related regulatory assets discussed in the previous paragraph.

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 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. The MoPSC has not yet taken any further action in the docket.

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. The cases are expected to focus on the cost and amount of incremental natural gas purchases for the storm period, as well as the subscription and use of transportation and natural gas storage assets during the period.

On February 23, 2022, the MoPSC issued an order approving Spire Missouri’s request for $800.0 in new financing authority over three years, subject to certain customary conditions.

Spire Alabama

In October 2018, the APSC approved the renewal of its Rate Stabilization and Equalization (RSE) rate-setting process for Spire Alabama through September 30, 2022, limiting equity as a percent of total capitalization to a range of 56.5% to 55.5%. Under RSE, the APSC conducts quarterly reviews to determine whether Spire Alabama’s return on average common equity (ROE) at the end of the rate year will be within the allowed range of return. Reductions in rates can be made quarterly to bring the projected ROE within the allowed range; increases, however, are allowed only once each rate year, effective December 1, and cannot exceed 4% of prior-year revenues. Spire Alabama’s allowed range of ROE is 10.15% to 10.65% with an adjusting point of 10.4%. In September 2022, the APSC approved the renewal of RSE through September 30, 2025, with certain modifications to the current terms. Effective October 1, 2022, Spire Alabama's allowed range of return on average common equity is 9.50% to 9.90% with an adjusting point of 9.70%. Average Common Equity growth is limited to 6.00% each year. Spire Alabama retains the ability to receive a performance-based adjustment of +/- 10 basis points to the return on equity adjusting point, based upon the terms of the previously approved Accelerated Infrastructure Modernization (AIM) Program tariff. However, in September of 2022, Spire applied for and received approval to suspend the operation of the AIM performance-based adjustment for 2023. The quarterly reviews have been modified to occur only in March, June, and September. Spire Alabama retained the current equity limitation as a percent of total capitalization at 55.5% and adjustments to the Cost Control Measure (CCM) as noted below.

The inflation-based CCM established by the APSC, allows for annual changes in operation and maintenance (“O&M”) expense per customer relative to an index range. The CCM will be calculated based upon O&M expense per customer and the O&M base year will be Spire Alabama’s actual 2018 O&M expense with an adjustment to that base in 2019 of 2/3 of the 2018 CCM differential (amount below the CCM range in 2018) and an adjustment in 2020 of 1/3 of the 2018 CCM differential, with no adjustment to the base in 2021 and 2022. Spire Alabama’s 2018 actual rate year O&M expense will be inflation-adjusted using a new index range based on the June CPI-U each rate year plus or minus 1.50%. If rate year O&M expense falls within the index range, no adjustment is required. If rate year O&M expense exceeds the index range, three-quarters of the difference is returned to customers through future rate adjustments. To the extent rate year O&M is less than the index range, Spire Alabama benefits by one-half of the difference through future rate adjustments. Effective October 1, 2022, the Base Year O&M expense will be computed by averaging the actual O&M expenses for 2020, 2021, and 2022. The Base CPI-U will be computed by averaging the August CPI-U for 2020, 2021, 2022. The Index will be computed by measuring the change from the Base CPI-U to the August CPI-U of the preceding completed fiscal year, less a factor of 1.50%. The index range will be computed by adjusting the index plus or minus 1.50%. If rate year O&M expense falls within the index range, no adjustment is required. If rate year O&M expense exceeds the index range, three-quarters of the difference is returned to customers through future rate adjustments. To the extent rate year O&M is less than the index range, Spire Alabama benefits by one-half of the difference through future rate adjustments. If a benefit is achieved, the Base Year and the Base CPI-U for the following year will each be reset to an average of the three preceding completed years. If a benefit is not achieved, the Base Year and Base CPI-U will not be updated. Certain items that fluctuate based on situations demonstrated to be beyond Spire Alabama’s control may be excluded from the CCM calculation.

The RSE reduction for September 30, 2021, following the year end point of test was $2.2 to bring the expected rate of return on average common equity to within the allowed rate of return. The CCM benefit for rate year 2021 was $8.8. To mitigate the impact on ratepayers, Spire Alabama requested and received approval from the APSC to recover the 2021 CCM benefit over five years (with recognition of revenue only up to 24 months in advance of recovery). As a part of the annual update for RSE, on December 29, 2021, Spire Alabama filed an increase for rate year 2022 of $5.3. The 2021 RSE reduction of $2.2, the five-year recovery of the 2021 CCM benefit of $8.8 and the annual RSE increase of $5.3 were all effective on January 1, 2022. There was no RSE reduction in 2022 for the January 31, April 30, July 31 or September 30 quarterly points of test. Spire Alabama recorded a CCM benefit for rate year 2022 of $17.2. Similar to the rate year 2021 CCM benefit, Spire has requested and received approval to recover the rate year 2022 CCM benefit over five years. On October 26, 2022, Spire Alabama made its annual 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 ROE.

Spire Alabama’s rate schedules for natural gas distribution charges contain a GSA rider which permits the pass-through to customers of changes in the cost of gas supply. Spire Alabama’s tariff provides a temperature adjustment mechanism, also included in the GSA rider, which is designed to moderate the impact of departures from normal temperatures on Spire Alabama’s earnings. The temperature adjustment applies primarily to residential, small commercial and small industrial customers. Other non-temperature weather-related conditions that may affect customer usage are not included in the temperature adjustment. There is also a mechanism under Spire Alabama's GSA rider allowing the utility to create value through off-system sales of excess natural gas supply and capacity and to retain 25% of the value created while giving 75% of the value to customers. As of April 2022, the first $1.6 of value from capacity release goes entirely to customers before Spire Alabama retains 25%. In the past year, Spire Alabama filed GSA rate increases effective December 1, 2021, April 1, 2022, August 1, 2022, and October 1, 2022, primarily attributable to higher natural gas prices.

The APSC approved an Enhanced Stability Reserve (ESR) in 1998, which was subsequently modified and expanded in 2010. As currently approved, the ESR provides deferred treatment and recovery for the following: (1) extraordinary O&M expenses related to environmental response costs; (2) extraordinary O&M expenses related to self-insurance costs that exceed $1.0 per occurrence; (3) extraordinary O&M expenses, other than environmental response costs and self-insurance costs, resulting from a single force majeure event or multiple force majeure events greater than $0.3 and $0.4, respectively, during a rate year; and (4) negative individual large commercial and industrial customer budget revenue variances that exceed $0.4 during a rate year. Charges to the ESR are subject to certain limitations which may disallow deferred treatment and which prescribe the timing of recovery. Subsequent to the nine-year period and subject to APSC authorization, Spire Alabama expects to be able to recover underfunded ESR balances over a five-year amortization period with an annual limitation of $0.7. Amounts in excess of this limitation are deferred for recovery in future years.

On July 12, 2022, the APSC approved Spire Alabama’s application for an intercompany revolving credit agreement allowing Spire Alabama to borrow from Spire in a principal amount not to exceed $275.0 (up from the previously approved $200.0) at any time outstanding in combination with its bank line of credit, and to loan to Spire in a principal amount not to exceed $25.0 (unchanged) at any time outstanding. On September 13, 2022, the APSC approved an application for up to $175.0 of additional long-term debt financing for Spire Alabama (ultimately issued on October 13, 2022).

Spire

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

Spire Gulf has similar rate regulation to Spire Alabama. Its RSE rate-setting mechanism was renewed in September 2021 for a four-year term through September 2025. The RSE allowed ROE range was 10.45% to 10.95% with an adjusting point of 10.70% in fiscal 2021, while the ROE range is 9.70% to 10.30% with an adjusting point of 9.95% for fiscal 2022 through fiscal 2025. On October 26, 2021, Spire Gulf made its annual RSE rate filing with the APSC based on its budget for fiscal 2022 and an allowed ROE of 9.95%. New rates designed to provide increased annual revenues of $1.0 became effective January 3, 2022. On October 26, 2022, Spire Gulf made its annual RSE filing for fiscal 2023 reflecting an increase to annual revenues of $3.5 that is pending review by the APSC. The CCM has similar evaluation and recovery provisions when expenses exceed or are under a band of +/- 1.50% around the CPI-U inflated O&M per customer expense level from the base year, excluding expenses for pensions and gas bad debt. The base year for the O&M index was 2017 for fiscal 2020 and 2021 and was 2021 for fiscal 2022. Since a CCM benefit was recorded in fiscal 2022, the base year O&M index for fiscal 2023 through fiscal 2025 will be the 2022 O&M level. Spire Gulf recorded a CCM benefit for rate year 2021 of $2.3 to revenues, resulting in a net income benefit of $1.6. A CCM benefit of $1.7 was recorded for fiscal 2022 to an economic development fund that can be used for economic development purposes subject to APSC approval. Spire Gulf has a Cast Iron Main Replacement Factor (CIF) that provides an enhanced return on the pro-rata costs associated with cast iron main replacement exceeding 10 miles per year based on a 75% weighting for the equity content. Capital expenditures recovered under the CIF have not increased since fiscal 2019 pursuant to applicable tariff provisions although the Company is continuing to recover costs of service associated with accumulated expenditures under the CIF. Spire Gulf also has an ESR for negative revenue variances over $0.1 or a force majeure event expense of $0.1 (or two events that exceed $0.15), a Self Insurance Reserve for general liability coverage, and an Environmental Cost Recovery Factor that recovers 90% of prudently incurred costs for compliance with environmental laws, rules and regulations. Spire Gulf has an APSC-approved intercompany revolving credit agreement with Spire to borrow in a principal amount not to exceed $75.0 and to loan up to $25.0. On September 13, 2022, the APSC approved the issuance of $30.0 of long-term debt (ultimately issued on October 13, 2022) to refinance outstanding short-term debt.

Spire Mississippi utilizes a formula rate-making process under the Rate Stabilization Adjustment Rider (RSA). An allowed return on equity (currently 10.03%) is computed annually and compared to the actual return on equity based on a rate year ending June 30. If the actual equity return on an end of period rate base is beyond the allowed return on equity by 1.0%, then 75% of any shortfall is recovered through a rate increase and 50% of any excess results in a rate decrease. Updates may include known and measurable adjustments to historic costs from the 12 months ended June 30, submitted September 15 for an effective date of November 1, unless disputed by the Mississippi Public Utilities Staff (MPUS), with any disputes to be resolved by the Mississippi Public Service Commission (MSPSC) by January 15 of the following year. On January 12, 2021, the MSPSC approved an agreement between Spire Mississippi and the MPUS settling its RSA filing that was made on August 28, 2020, resulting in a $0.3 increase in annual revenue. New rates became effective January 13, 2021. On August 23, 2021, Spire Mississippi filed its RSA for the rate year ended June 30, 2021, which reflected an increase to annual revenue totaling $1.1. The MSPSC, by its order dated January 18, 2022, approved a stipulation agreement between the MPUS and Spire Mississippi that provided for increased annual revenues of $0.8 through rates that became effective on February 1, 2022. Spire Mississippi’s RSA filing made on September 14, 2022 reflected a rate increase of $1.3 and is pending review by the MPUS. A Supplemental Growth Rider provides recovery of certain system expansion projects to serve qualified economic development projects.

In August 2018, the FERC approved an order issuing a Certificate of Public Convenience and Necessity for the Spire STL Pipeline ( “August 2018 Order”). In November 2018, the FERC issued a Notice to Proceed, and in November 2019, Spire STL Pipeline received FERC authorization to place the pipeline into service. Also, 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, that court issued an order vacating the Certificate of Public Convenience and Necessity and remanding the matter back to the FERC for further action. On September 14, 2021, and December 3, 2021, the FERC issued temporary certificates to allow the pipeline to continue operating indefinitely while it considers approval of a new permanent certificate. Certain parties in the temporary certificate proceeding sought rehearing of the FERC’s December 3, 2021 temporary certificate. The FERC denied rehearing by operation of law on February 3, 2022. On March 7, 2022, one group of the rehearing parties filed a petition for review of FERC’s December 3, 2021 temporary certificate order in the DC Circuit limited to whether the temporary certificates carry eminent domain authority. On June 29, 2022, the DC Circuit issued an order holding the proceeding in abeyance pending the outcome of the FERC remand proceeding. Meanwhile on December 15, 2021, the FERC issued a notice of intent to prepare a supplemental environmental impact statement (EIS) regarding the Spire STL Pipeline. On October 7, 2022, the FERC staff issued its final EIS, concluding that “impacts from the continued operation of the Spire STL [Pipeline] would be less than significant, with the exception of climate change impacts resulting from GHG [greenhouse gas] emissions that are not characterized as significant or insignificant.”

Spire STL Pipeline will continue to pursue all legal and regulatory avenues to ensure access to reliable, affordable and safe delivery of energy for eastern Missouri. While there is no impairment at this time, if the pipeline is taken out of service, the Company’s financial condition and results of operations may be adversely impacted by impairment of Spire STL Pipeline’s assets, currently carried at over $270, and other effects. If Spire Missouri is unable to obtain sufficient pipeline capacity to meet its customers’ annual and seasonal natural gas demands, Spire Missouri’s financial condition and results of operations may be adversely impacted.

On October 9, 2020, Spire Storage West LLC (“Spire Storage”) filed with the FERC an Abbreviated Application for an Amendment of Certificate of Public Convenience and Necessity, Reaffirmation of Market-Based Rate Authority, and Related Authorizations pursuant to Section 7(c) of the Natural Gas Act. The application requests authorization to expand capacity and increase pipeline connectivity at certain of Spire Storage’s natural gas storage facilities in Wyoming. On March 15, 2022, the FERC issued a final EIS for this project, concluding that construction and operation of the project would not result in significant environmental impacts and that project greenhouse gas emissions fall even below the FERC’s presumptive significance threshold for climate change impacts. On May 19, 2022, the FERC approved an order issuing certificates and granting abandonment as requested in the application. On June 21, 2022, following the submittal of an implementation plan, the FERC staff issued its limited notice to proceed with the project.

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Note 16 - Commitments and Contingencies

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

Commitments

The Company and the Utilities have entered into contracts with various counterparties, expiring on dates through 2039, for the storage, transportation, and supply of natural gas. Minimum payments required under the contracts in place at September 30, 2022, are estimated at $2,107.1, $1,224.7 and $723.1 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.

A consolidated subsidiary is a limited partner in 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 September 30, 2022, Spire has contributed $1.9.

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 a "no further action" letter was received at the Huntsville manufactured gas plant 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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Note 17 - Leases

12 Months Ended

Sep. 30, 2022

Notes to Financial Statements

Lessee, Operating Leases [Text Block]

The lease agreement covering the Company’s primary office space in St. Louis extends through February 2035, with an option to renew for an additional five years. Spire Alabama’s lease agreement for office space in Birmingham extends through January 2037, with an option to renew for two additional five-year terms. The lease agreement covering Spire Marketing and Spire Storage office space in Houston extends through December 2028, with options to terminate three years earlier or to renew for an additional five years. The renewal options in the St. Louis and Houston leases are reasonably certain to be exercised and are included in the lease term used to determine the right-of-use assets and lease liabilities. The Company and its subsidiaries have other relatively minor rental arrangements for real estate and equipment with remaining terms of up to eight years.

Operating lease cost, cash flow and noncash information are shown in the following table.

	Spire						Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020		2022		2021		2020
Operating lease cost, including amounts capitalized	$	7.4	$	7.2	$	8.7	$	0.5	$	0.4	$	0.5	$	2.1	$	2.1	$	3.5
Cash flow and noncash information about operating leases:
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities		7.3		7.2		8.5		0.5		0.4		0.5		2.1		2.1		3.3
Right-of-use assets obtained in exchange for lease liabilities		24.6		—		71.1		1.1		—		2.1		23.5		—		10.0

The following table shows year-end balance sheet and weighted-average information about operating leases.

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Right-of-use assets	$	73.7		$	60.4		$	1.7		$	1.4		$	20.2		$	4.8
Lease liabilities, current		6.5			6.5			0.4			0.3			1.9			1.9
Lease liabilities, noncurrent		73.7			53.7			1.5			1.0			24.6			2.7
Weighted-average remaining lease term (in years)		15.0			15.3			5.1			4.5			14.3			2.3
Weighted-average discount rate		4.1	%		4.2	%		2.2	%		2.5	%		3.7	%		2.2	%

On the balance sheets, right-of-use assets are included in “Deferred Charges and Other Assets: Other,” current lease liabilities are in “Current Liabilities: Other,” and noncurrent lease liabilities are in “Deferred Credits and Other Liabilities: Other.”

Following is a maturity analysis by fiscal year for operating lease liabilities as of September 30, 2022.

	Spire			Spire Missouri			Spire Alabama
2023	$	6.7		$	0.4		$	1.9
2024		7.3			0.5			2.1
2025		7.4			0.4			2.1
2026		7.3			0.3			2.2
2027		7.3			0.2			2.3
Thereafter		72.8			0.2			24.1
Total undiscounted lease payments		108.8			2.0			34.7
Less present value discount		(28.6	)		(0.1	)		(8.2	)
Total current and noncurrent lease liabilities	$	80.2		$	1.9		$	26.5

There are no significant finance leases, short-term leases, subleases, variable lease payments, residual value guarantees, restrictions or covenants pertaining to leases.

The Company elected, for all asset classes, not to recognize right-of-use assets and lease liabilities for short-term leases. Instead, the lease payments for short-term leases are recognized in profit or loss on a straight-line basis over the lease term and variable lease payments are recognized in the period in which the obligation for those payments is incurred. The Company elected, for all asset classes, not to separate nonlease components from lease components and instead to account for each separate lease component and the nonlease components associated with that lease component as a single lease component.

The discount rate used for all the leases is the applicable incremental borrowing rate, which is the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. For a subsidiary lessee, the rate applicable to the subsidiary is used unless the lease terms are influenced by parent credit.

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Significant Accounting Policies (Policies)

12 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

BASIS OF PRESENTATION – These notes are an integral part of the accompanying audited 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.” Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

The accompanying audited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). 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.

NATURE OF OPERATIONS – Spire has two reportable segments: Gas Utility and Gas Marketing. 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 primary gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The activities of the Company’s other subsidiaries are reported as Other and are described in Note 14, Information by Operating Segment. Spire Missouri and Spire Alabama each have a single reportable segment.

Use of Estimates, Policy [Policy Text Block]

USE OF ESTIMATES – The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

System Of Accounts Policy [Policy Text Block]

SYSTEM OF ACCOUNTS – The accounts of the Utilities are maintained in accordance with the Uniform System of Accounts prescribed by the applicable state public service commissions, which systems substantially conform to that prescribed by the Federal Energy Regulatory Commission (FERC).

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. See additional discussion on regulated operations in Note 15, Regulatory Matters.

Property, Plant and Equipment, Policy [Policy Text Block]

PROPERTY, PLANT, AND EQUIPMENT –

Utility Plant – Utility plant is stated at original cost. The cost of additions to utility plant includes contracted work, direct labor and materials, allocable overheads and an allowance for funds used during construction. The costs of units of property retired, replaced or renewed are removed from utility plant and are charged to accumulated depreciation. Maintenance and repairs of property and replacement and renewal of items determined to be less than units of property are charged to maintenance expenses.

Utility plant is depreciated using the composite method on a straight-line basis over the estimated service lives of the various classes of property at rates approved by the applicable regulatory commission. For Spire Missouri and for Spire Alabama, the annual depreciation and amortization expense in fiscal years 2022, 2021 and 2020 averaged approximately 3% of the original cost of depreciable and amortizable property.

Non-utility Property – Non-utility property is recorded at the original cost of acquisition or construction, which includes material, labor, contractor services and, for FERC-regulated projects, an allowance for funds used during construction. Repairs, replacements and renewals of items of property determined to be less than a unit of property or that do not increase the property’s life or functionality are charged to maintenance expense. Upon retirement or sale of non-utility property, the original cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in the income statements. Costs related to software developed or obtained for internal use are capitalized and amortized on a straight-line basis over the estimated useful life of the related software. If software is retired prior to being fully amortized, the difference is recorded as a loss in the income statements.

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.

September 30	2022		2021		2020
Spire	$	77.8	$	59.5	$	67.6
Spire Missouri		45.6		37.1		34.3
Spire Alabama		19.2		13.6		17.0

Asset Retirement Obligation [Policy Text Block]

ASSET RETIREMENT OBLIGATIONS – Spire, Spire Missouri and Spire Alabama record legal obligations associated with the retirement of long-lived assets in the period in which the obligations are incurred, if sufficient information exists to reasonably estimate the fair value of the obligations. Obligations are recorded as both a cost of the related long-lived asset and as a corresponding liability. Subsequently, the asset retirement costs are depreciated over the life of the asset and the asset retirement obligations are accreted to the expected settlement amounts. The Company, Spire Missouri and Spire Alabama record asset retirement obligations associated with certain safety requirements to purge and seal gas distribution mains upon retirement, the plugging and abandonment of storage wells and other storage facilities, specific service line obligations, and certain removal and disposal obligations related to components of Spire Missouri’s, Spire Alabama’s and Spire Gulf’s distribution systems and general plant. Asset retirement obligations recorded by Spire’s other subsidiaries are not material. As authorized by the Missouri Public Service Commission (MoPSC) and the Alabama Public Service Commission (APSC), Spire Missouri, Spire Alabama and Spire Gulf accrue future asset removal costs associated with their property, plant and equipment even if a legal obligation does not exist. Such accruals are provided for through depreciation expense and are recorded with corresponding credits to regulatory liabilities or regulatory assets. When those utilities retire depreciable utility plant and equipment, they charge the associated original costs to accumulated depreciation and amortization, and any related removal costs incurred are charged to regulatory liabilities or regulatory assets. The difference between removal costs recognized in depreciation rates and the accretion expense and depreciation expense recognized for financial reporting purposes is a timing difference between recovery of these costs in rates and their recognition for financial reporting purposes. Accordingly, these differences are deferred as regulatory liabilities or regulatory assets. In the rate setting process, the regulatory liabilities or regulatory assets are excluded from the rate base upon which those utilities have the opportunity to earn their allowed rates of return.

The following table presents a reconciliation of the beginning and ending balances of asset retirement obligations at September 30, as reported in the balance sheets.

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Asset retirement obligations, beginning of year	$	519.6		$	540.1		$	143.4		$	153.4		$	362.8		$	374.3
Liabilities incurred during the period		3.2			11.1			1.2			1.4			0.5			7.4
Liabilities settled during the period		(9.2	)		(21.9	)		(4.1	)		(9.7	)		(2.0	)		(10.7	)
Accretion		21.1			21.8			5.9			6.2			14.7			15.0
Revisions in estimated cash flows		(13.8	)		(31.5	)		(35.8	)		(7.9	)		22.7			(23.2	)
Asset retirement obligations, end of year	$	520.9		$	519.6		$	110.6		$	143.4		$	398.7		$	362.8

Inventory, Policy [Policy Text Block]

NATURAL GAS AND PROPANE GAS – For Spire Missouri’s eastern region, inventory of natural gas in storage is priced on a last in, first out (LIFO) basis and inventory of propane gas in storage is priced on a first in, first out (FIFO) basis. For the rest of the Gas Utility segment, inventory of natural gas in storage is priced on the weighted average cost basis. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2022 was more than the LIFO cost by $37.3. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2021 was less than the LIFO cost by $14.0. The carrying value of the Utilities’ inventory is never adjusted to a lower net realizable value or market value because, pursuant to Purchased Gas Adjustment (PGA) clauses or a Gas Supply Adjustment (GSA) rider, actual gas costs are recovered in customer rates. Natural gas and propane gas storage inventory in Spire’s other operating segments is recorded at the lower of average cost or net realizable value.

Business Combinations and Goodwill [Policy Text Block]

BUSINESS COMBINATIONS AND GOODWILL – Spire’s acquisitions were accounted for using business combination accounting. Under this method, the purchase price paid by the acquirer is allocated to the assets acquired and liabilities assumed as of the acquisition date based on their fair value. Goodwill is measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. At September 30, 2022, goodwill included in Spire’s Gas Utility and Gas Marketing segments was $210.2 and zero, respectively, with the remainder held at the corporate level. Goodwill amounts have not changed since fiscal 2017, and there are no accumulated impairment losses. Spire and Spire Missouri evaluate goodwill for impairment as of July 1 of each year, or more frequently if events and circumstances indicate that goodwill might be impaired. At each test date, the assessments concluded that goodwill was not impaired. The Company updated the assessments as of September 30, 2022, determining that it remained more likely than not that the fair value of each reporting unit exceeded its carrying value.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

IMPAIRMENT OF LONG-LIVED ASSETS – Long-lived assets classified as held and used are evaluated for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Whether impairment has occurred is determined by comparing the estimated undiscounted cash flows attributable to the assets with the carrying value of the assets. If the carrying value exceeds the undiscounted cash flows, the Company recognizes an impairment charge equal to the amount of the carrying value that exceeds the estimated fair value of the assets. In the period in which the Company determines an asset meets held-for-sale criteria, an impairment charge is recorded to the extent the book value exceeds its fair value less cost to sell.

On July 1, 2020, Spire’s Board of Directors, based upon the recommendation of senior management, revised the development plan for Spire Storage, resulting in an impairment charge of $140.8 related to Spire Storage assets (non-utility property on the balance sheet) in the quarter ended June 30, 2020. The revision was driven by the realization that a longer time horizon will be required for optimization and positioning of the storage facility to serve energy markets in the western United States. Among other factors, evaluations of the continuing evolution of market dynamics in the region led management to update models of various development alternatives. Separately in the quarter ended June 30, 2020, Spire recorded impairment charges totaling $7.8 related to two commercial compressed natural gas fueling stations (also non-utility property) as a result of revised projections reflecting lower diesel prices and slower conversions of Class 8 vehicles. The fair values used in measuring the impairment charges were determined with an expected present value technique using a discounted cash flow method under an income approach. In the quarter ended September 30, 2021, Spire sold one of the fueling stations and recorded a gain of $1.3.

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 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. Refer to Note 10, Derivative Instruments and Hedging Activities, for more information about derivatives.

Income Tax, Policy [Policy Text Block]

INCOME TAXES – Spire and its subsidiaries account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amount of existing assets and liabilities and the respective tax basis and for tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. The effects on deferred tax assets and liabilities of a change in enacted tax rates is recognized in income or loss for non-regulated operations, and in a regulatory asset or regulatory liability for regulated operations. A valuation allowance is established when it is more likely than not that some portion or all of the deferred tax assets will not be realized.

The Company accounts for uncertain tax positions in accordance with authoritative guidance. The authoritative guidance addresses the determination of whether tax benefits claimed, or expected to be claimed, on a tax return should be recorded in the financial statements. Spire may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the position will be sustained upon examination by the taxing authority, based on the technical merits of the position. Tax-related interest and penalties, if any, are classified as a liability on the balance sheets. For additional information on the accounting for income taxes, refer to Note 12, Income Taxes.

Cash and Cash Equivalents, Policy [Policy Text Block]

CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – All highly liquid debt instruments purchased with original maturities of three months or less are considered to be cash equivalents. Such instruments are carried at cost, which approximates market value. Outstanding checks on the Company’s and Utilities’ bank accounts in excess of funds on deposit create book overdrafts (which are funded at the time checks are presented for payment) and are classified as Other in the Current Liabilities section of the balance sheets. Changes in book overdrafts are reflected as Operating Activities in the statements of cash flows. In Spire’s statements of cash flows, total Cash, Cash Equivalents, and Restricted Cash included $14.0 and $7.0 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of September 30, 2022 and 2021, 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.

Accounts Receivable [Policy Text Block]

NATURAL GAS RECEIVABLE – Spire Marketing enters into natural gas transactions with natural gas pipeline and storage companies known as park and loan arrangements. Under the terms of the arrangements, Spire Marketing purchases natural gas from a third party and delivers that natural gas to the pipeline or storage company for the right to receive the same quantity of natural gas from that company at the same location in a future period. These arrangements are accounted for as non-monetary transactions under GAAP and are recorded at the carrying amount. As such, natural gas receivables are reflected in “Other” current assets on the Consolidated Balance Sheets at cost, which includes related fees associated with the transactions. In the period that the natural gas is returned to Spire Marketing, concurrent with the sale of the natural gas to a third party, the related natural gas receivable is expensed in the Consolidated Statements of Income. In conjunction with these transactions, Spire Marketing usually enters into New York Mercantile Exchange (NYMEX) and Intercontinental Exchange (ICE) natural gas futures, options, and swap contracts or fixed price sales agreements to protect against market changes in future sales prices.

Earnings Per Share, Policy [Policy Text Block]

EARNINGS PER COMMON SHARE – GAAP requires dual presentation of basic and diluted earnings per share (EPS). EPS is computed using the two-class method, which is an earnings allocation method for computing EPS that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Certain of the Company’s stock-based compensation awards pay non-forfeitable dividends to the participants during the vesting period and, as such, are deemed participating securities. Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding that are increased for additional shares that would be outstanding if potentially dilutive non-participating securities were converted to common shares, pursuant to the treasury stock method. Shares attributable to equity units, non-participating stock options and time-vested restricted stock/units are excluded from the calculation of diluted earnings per share if the effect would be antidilutive. Shares attributable to non-participating performance-contingent restricted stock awards are only included in the calculation of diluted earnings per share to the extent the underlying performance and/or market conditions are satisfied (a) prior to the end of the reporting period or (b) would be satisfied if the end of the reporting period were the end of the related contingency period and the result would be dilutive. The Company’s EPS computations are presented in Note 4, Earnings Per Common Share.

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. Spire Missouri and Spire Alabama borrowed funds from the Company and incurred related interest, as reflected in their separate financial statements, and they participated in normal intercompany shared services transactions. In addition, Spire Missouri’s and Spire Alabama’s other transactions with affiliates included: 

	Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020
Natural gas purchases from Spire Marketing	$	86.3	$	92.5	$	56.9	$	3.2	$	10.4	$	6.3
Natural gas sales to Spire Marketing		—		1.1		0.1		0.5		0.1		0.3
Transportation services from Spire STL Pipeline LLC		32.0		32.0		27.9		—		—		—
Transportation services from Spire NGL Inc.		—		0.5		1.0		—		—		—

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 estimates for expected credit losses were increased as a result of considerations related to the outbreak of COVID-19 in 2020, including trends from previous economic downturns, the effects of moratoriums on gas service cutoffs, and the effects of slower-than-normal disconnection activity in general, offset by the amount subject to specific recovery under Missouri’s deferral order (see Note 15, Regulatory Matters). 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
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Allowance at beginning of year	$	30.3		$	24.9		$	23.0		$	22.6		$	18.1		$	14.9		$	6.6		$	5.5		$	6.3
Provision for expected credit losses		11.6			14.7			14.0			11.2			11.1			12.7			0.3			3.1			0.9
Write-offs, net of recoveries		(10.0	)		(9.3	)		(12.1	)		(8.9	)		(6.6	)		(9.5	)		(0.6	)		(2.0	)		(1.7	)
Allowance at end of year	$	31.9		$	30.3		$	24.9		$	24.9		$	22.6		$	18.1		$	6.3		$	6.6		$	5.5

FINANCE RECEIVABLES – Spire Alabama finances third party contractor sales of merchandise including gas furnaces and appliances. At September 30, 2022 and 2021, Spire Alabama’s finance receivable totaled approximately $7.1 and $7.8, respectively. Financing is available only to qualified customers who meet creditworthiness thresholds for customer payment history and external agency credit reports. Spire Alabama relies upon ongoing payments as the primary indicator of credit quality during the term of each contract. The allowance for credit losses is recognized using an estimate of write-off percentages based on historical experience. Delinquent accounts are evaluated on a case-by-case basis and, absent evidence of debt repayment, after 90 days are due in full and assigned to a third-party collection agency. The remaining finance receivable is written off approximately 12 months after being assigned to the third-party collection agency. Spire Alabama had finance receivables past due 90 days or more of $0.3 at September 30, 2022 and 2021.

Liability Reserve Estimate, Policy [Policy Text Block]

GROUP MEDICAL AND WORKERS’ COMPENSATION RESERVES – The Company self-insures its group medical and workers’ compensation costs and carries stop-loss coverage in relation to medical claims and workers’ compensation claims. Reserves for amounts incurred but not reported are established based on historical cost levels and lags between occurrences and reporting.

Fair Value of Financial Instruments, Policy [Policy Text Block]

FAIR VALUE MEASUREMENTS – Certain assets and liabilities are recognized or disclosed at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.

The levels of the hierarchy are described below:

• Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

• Level 2 – Pricing inputs other than quoted prices included within Level 1, which are either directly or indirectly observable for the asset or liability as of the reporting date. These inputs are derived principally from, or corroborated by, observable market data.

• Level 3 – Pricing that is based upon inputs that are generally unobservable that are based on the best information available and reflect management’s assumptions about how market participants would price the asset or liability.

Assessment of the significance of a particular input to the fair value measurements may require judgment and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. Additional information about fair value measurements is provided in Note 8, Fair Value of Financial Instruments, Note 9, Fair Value Measurements, and Note 13, Pension Plans and Other Postretirement Benefits.

Share-Based Payment Arrangement [Policy Text Block]

STOCK-BASED COMPENSATION – The Company accounts for share-based compensation arrangements in accordance with ASC Topic 718, Compensation - Stock Compensation. The Company measures stock-based compensation awards at fair value at the date of grant and recognizes the compensation cost of the awards over the requisite service period. Forfeitures are recognized in the period they occur. Refer to Note 3, Stock-Based Compensation, for further discussion of the accounting for the Company’s stock-based compensation plans.

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Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

September 30	2022		2021		2020
Spire	$	77.8	$	59.5	$	67.6
Spire Missouri		45.6		37.1		34.3
Spire Alabama		19.2		13.6		17.0

Schedule of Asset Retirement Obligations [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Asset retirement obligations, beginning of year	$	519.6		$	540.1		$	143.4		$	153.4		$	362.8		$	374.3
Liabilities incurred during the period		3.2			11.1			1.2			1.4			0.5			7.4
Liabilities settled during the period		(9.2	)		(21.9	)		(4.1	)		(9.7	)		(2.0	)		(10.7	)
Accretion		21.1			21.8			5.9			6.2			14.7			15.0
Revisions in estimated cash flows		(13.8	)		(31.5	)		(35.8	)		(7.9	)		22.7			(23.2	)
Asset retirement obligations, end of year	$	520.9		$	519.6		$	110.6		$	143.4		$	398.7		$	362.8

Schedule of Related Party Transactions [Table Text Block]

	Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020
Natural gas purchases from Spire Marketing	$	86.3	$	92.5	$	56.9	$	3.2	$	10.4	$	6.3
Natural gas sales to Spire Marketing		—		1.1		0.1		0.5		0.1		0.3
Transportation services from Spire STL Pipeline LLC		32.0		32.0		27.9		—		—		—
Transportation services from Spire NGL Inc.		—		0.5		1.0		—		—		—

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

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Allowance at beginning of year	$	30.3		$	24.9		$	23.0		$	22.6		$	18.1		$	14.9		$	6.6		$	5.5		$	6.3
Provision for expected credit losses		11.6			14.7			14.0			11.2			11.1			12.7			0.3			3.1			0.9
Write-offs, net of recoveries		(10.0	)		(9.3	)		(12.1	)		(8.9	)		(6.6	)		(9.5	)		(0.6	)		(2.0	)		(1.7	)
Allowance at end of year	$	31.9		$	30.3		$	24.9		$	24.9		$	22.6		$	18.1		$	6.3		$	6.6		$	5.5

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Note 2 - Revenue (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	2022			2021			2020
Spire
Gas Utility:
Residential	$	1,416.6		$	1,234.0		$	1,184.3
Commercial & industrial		338.9			586.0			383.0
Transportation		118.0			122.9			115.8
Off-system & other incentive		42.0			152.7			38.4
Other customer revenue		19.9			22.2			26.2
Total revenue from contracts with customers		1,935.4			2,117.8			1,747.7
Changes in accrued revenue under alternative revenue programs		10.7			1.5			4.3
Total Gas Utility operating revenues		1,946.1			2,119.3			1,752.0
Gas Marketing		234.9			96.5			87.9
Other		69.2			67.7			57.8
Total before eliminations		2,250.2			2,283.5			1,897.7
Intersegment eliminations (see Note 14, Information by Operating Segment)		(51.7	)		(48.0	)		(42.3	)
Total Operating Revenues	$	2,198.5		$	2,235.5		$	1,855.4
Spire Missouri
Residential	$	1,061.4		$	882.1		$	859.6
Commercial & industrial		177.2			436.1			241.4
Transportation		33.3			33.5			32.9
Off-system & other incentive		25.2			145.6			35.1
Other customer revenue		11.1			16.3			22.3
Total revenue from contracts with customers		1,308.2			1,513.6			1,191.3
Changes in accrued revenue under alternative revenue programs		12.8			3.0			2.3
Total Operating Revenues	$	1,321.0		$	1,516.6		$	1,193.6
Spire Alabama
Residential	$	291.6		$	288.0		$	267.8
Commercial & industrial		119.1			114.9			109.4
Transportation		74.4			78.7			72.9
Off-system & other incentive		16.8			7.1			3.2
Other customer revenue		5.5			1.9			1.9
Total revenue from contracts with customers		507.4			490.6			455.2
Changes in accrued revenue under alternative revenue programs		1.7			3.4			(0.2	)
Total Operating Revenues	$	509.1		$	494.0		$	455.0

Schedule Of Taxes On Revenues [Table Text Block]

	2022		2021		2020
Spire	$	109.8	$	94.0	$	91.5
Spire Missouri		79.6		64.3		63.5
Spire Alabama		25.5		25.1		23.3

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Note 3 - Stock-based Compensation (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

				Weighted
				Average
				Grant Date
				Fair Value
	Units			Per Unit
Nonvested at September 30, 2021		312,596		$	74.33
Granted		128,396		$	67.43
Vested		(91,111	)	$	79.40
Forfeited		(6,357	)	$	69.43
Nonvested at September 30, 2022		343,524		$	70.14

				Weighted
				Average
				Grant Date
	Shares/			Fair Value
	Units			Per Share
Nonvested at September 30, 2021		110,300		$	70.98
Granted		62,945		$	63.57
Vested		(46,970	)	$	72.67
Forfeited		(4,030	)	$	68.62
Nonvested at September 30, 2022		122,245		$	66.60

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2022		2021		2020
Risk-free interest rate		0.79%		0.22%		1.57%
Expected dividend yield of stock		—		—		—
Expected volatility of stock		32.2%		31.4%		16.8%
Vesting period (in years)		3.0		3.0		3.0

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	2022			2021			2020
Total compensation cost	$	7.5		$	16.6		$	9.4
Compensation cost capitalized		(1.1	)		(2.7	)		(0.6	)
Compensation cost recognized in net income		6.4			13.9			8.8
Income tax benefit recognized in net income		(1.5	)		(3.2	)		(2.1	)
Compensation cost recognized in net income, net of income tax	$	4.9		$	10.7		$	6.7

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Note 4 - Earnings Per Common Share (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

	2022		2021		2020
Basic Earnings Per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Basic Earnings Per Share of Common Stock	$	3.96	$	4.97	$	1.44
Diluted Earnings per Common Share:
Net Income	$	220.8	$	271.7	$	88.6
Less: Provision for preferred dividends		14.8		14.8		14.8
Income allocated to participating securities		0.3		0.4		0.1
Net Income Available to Common Shareholders	$	205.7	$	256.5	$	73.7
Weighted Average Common Shares Outstanding (in millions)		52.0		51.6		51.2
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)*		0.1		0.1		0.1
Weighted Average Diluted Common Shares (in millions)		52.1		51.7		51.3
Diluted Earnings Per Share of Common Stock	$	3.95	$	4.96	$	1.44
* Calculation excludes certain outstanding common shares (shown in millions by period at the right) attributable to stock units subject to performance or market conditions and restricted stock, which could have a dilutive effect in the future		0.1		0.1		0.1

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Note 5 - Shareholders' Equity (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Stock Purchase Contract Obligation, Number of Shares to be Purchased [Table Text Block]

If the applicable market value* per share	Number of shares to be purchased per
of Spire common stock is:	stock purchase contract is:
Equal to or greater than $78.6906 (“threshold appreciation price”)	0.6354 (“minimum settlement rate”)
Less than $78.6906, but greater than $64.24	$50.00 ÷ applicable market value*
Less than or equal to $64.24 (“reference price”)	0.7783 (“maximum settlement rate”)

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Net			Defined Benefit			Net Unrealized
	Unrealized			Pension and			Gain (Loss) on
	Gain (Loss)			Other			Available-for-
	on Cash Flow			Postretirement			Sale Debt
	Hedges			Benefit Plans			Securities			Total
Spire
Balance at September 30, 2020	$	(38.4	)	$	(2.9	)	$	0.1		$	(41.2	)
Other comprehensive income (loss)		46.3			(1.3	)		(0.2	)		44.8
Balance at September 30, 2021		7.9			(4.2	)		(0.1	)		3.6
Other comprehensive income (loss)		42.5			1.5			(0.4	)		43.6
Balance at September 30, 2022	$	50.4		$	(2.7	)	$	(0.5	)	$	47.2
Spire Missouri
Balance at September 30, 2020	$	—		$	(2.9	)	$	—		$	(2.9	)
Other comprehensive loss		—			(1.3	)		—			(1.3	)
Balance at September 30, 2021		—			(4.2	)		—			(4.2	)
Other comprehensive income		—			1.5			—			1.5
Balance at September 30, 2022	$	—		$	(2.7	)	$	—		$	(2.7	)

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Note 6 - Long-term Debt (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Long-Term Debt Instruments [Table Text Block]

	2022			2021
Spire
3.31% Notes Payable, due December 15, 2022	$	25.0		$	25.0
3.54% Senior Notes, due February 27, 2024		150.0			150.0
0.75% Remarketable Senior Notes, due March 1, 2026		175.0			175.0
3.13% Senior Notes, due September 1, 2026		130.0			130.0
3.93% Senior Notes, due March 15, 2027		100.0			100.0
4.70% Senior Notes, due August 15, 2044		250.0			250.0
Total principal of Spire Missouri long-term debt (see below)		1,648.0			1,348.0
Total principal of Spire Alabama long-term debt (see below)		575.0			625.0
Other subsidiaries' long-term debt:
5.00% First Mortgage Bonds, due September 30, 2031		42.0			42.0
2.95% Notes, with annual principal payments through December 2034		123.9			129.6
3.52% First Mortgage Bonds, due September 30, 2049		40.0			40.0
Total principal of long-term debt		3,258.9			3,014.6
Less: Unamortized discounts and debt issuance costs		(19.2	)		(19.7	)
Less: Current portion		(281.2	)		(55.8	)
Long-term debt, excluding current portion	$	2,958.5		$	2,939.1
Spire Missouri
First Mortgage Bonds:
3.40% Series, due August 15, 2023	$	250.0		$	250.0
Floating Rate Series, due December 2, 2024		300.0			—
3.40% Series, due March 15, 2028		45.0			45.0
7.00% Series, due June 1, 2029	19.3			19.3
2.84% Series, due November 15, 2029		275.0			275.0
7.90% Series, due September 15, 2030		30.0			30.0
3.68% Series, due September 15, 2032		50.0			50.0
6.00% Series, due May 1, 2034		99.3			99.3
6.15% Series, due June 1, 2036		54.5			54.5
4.63% Series, due August 15, 2043		99.9			99.9
4.23% Series, due September 15, 2047		70.0			70.0
3.30% Series, due June 1, 2051		305.0			305.0
4.38% Series, due September 15, 2057		50.0			50.0
Total principal of Spire Missouri long-term debt		1,648.0			1,348.0
Less: Unamortized discounts and debt issuance costs		(10.3	)		(9.6	)
Less: Current portion		(250.0	)		—
Spire Missouri long-term debt, excluding current portion	$	1,387.7		$	1,338.4
Spire Alabama
3.86% Notes, due December 22, 2021	$	—		$	50.0
3.21% Notes, due September 15, 2025		35.0			35.0
2.88% Notes, due December 1, 2029		100.0			100.0
2.04% Notes, due December 15, 2030		150.0			150.0
5.90% Notes, due January 15, 2037		45.0			45.0
4.31% Notes, due December 1, 2045		80.0			80.0
3.92% Notes, due January 15, 2048		45.0			45.0
4.64% Notes, due January 15, 2049		90.0			90.0
4.02% Notes, due January 15, 2058		30.0			30.0
Total principal of Spire Alabama long-term debt		575.0			625.0
Less: Unamortized discounts and debt issuance costs		(3.5	)		(3.8	)
Less: Current portion		—			(50.0	)
Spire Alabama long-term debt, excluding current portion	$	571.5		$	571.2

Schedule of Maturities of Long-Term Debt [Table Text Block]

	2023		2024		2025		2026		2027
Spire	$	281.2	$	156.6	$	342.0	$	312.5	$	108.1
Spire Missouri		250.0		—		300.0		—		—
Spire Alabama		—		—		35.0		—		—

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Note 7 - Notes Payable and Credit Agreements (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Short-Term Debt [Table Text Block]

	Spire			Spire						Spire
	(Parent Only)			Missouri						Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Year Ended September 30, 2022
Highest borrowings outstanding	$	1,079.0		$	250.0		$	456.6		$	265.2		$	1,079.0
Lowest borrowings outstanding		408.0			—			43.2			38.4			462.5
Weighted average borrowings		636.2			113.0			244.9			152.6			749.2
Weighted average interest rate		1.2	%		0.8	%		0.4	%		0.5	%		1.1	%
As of September 30, 2022
Borrowings outstanding	$	1,037.5		$	—		$	445.3		$	260.9		$	1,037.5
Weighted average interest rate		3.3	%		0.0	%		3.3	%		3.3	%		3.3	%
As of September 30, 2021
Borrowings outstanding	$	422.0		$	250.0		$	240.9		$	49.0		$	672.0
Weighted average interest rate		0.2	%		0.7	%		0.2	%		0.2	%		0.4	%

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Note 8 - Fair Value of Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

					Classification of
					Estimated Fair Value
					Quoted
					Prices in		Significant
					Active		Observable
	Carrying		Fair		Markets		Inputs
	Amount		Value		(Level 1)		(Level 2)
Spire
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 September 30, 2021
Cash and cash equivalents	$	4.3	$	4.3	$	4.3	$	—
Notes payable		672.0		672.0		—		672.0
Long-term debt, including current portion		2,994.9		3,375.9		—		3,375.9
Spire Missouri
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 September 30, 2021
Note Payable	$	250.0	$	250.0	$	—	$	250.0
Notes payable - associated companies		240.9		240.9		—		240.9
Long-term debt		1,338.4		1,540.4		—		1,540.4
Spire Alabama
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 September 30, 2021
Notes payable - associated companies	$	49.0	$	49.0	$	—	$	49.0
Long-term debt, including current portion		621.2		707.5		—		707.5

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Note 9 - Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/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	$	318.2	$	—	$	—	$	(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 September 30, 2021
ASSETS
Gas Utility:
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		114.7		—		(93.7	)		21.0
Natural gas commodity contracts		—		35.2		—		(5.5	)		29.7
Other:
U.S. stock/bond mutual funds		26.2		—		—		—			26.2
Interest rate swaps		12.6		—		—		(5.2	)		7.4
Total	$	166.6	$	149.9	$	—	$	(208.4	)	$	108.1
LIABILITIES
Gas Utility:
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—
Gas Marketing:
NYMEX/ICE natural gas contracts		—		62.0		—		(62.0	)		—
Natural gas commodity contracts		—		96.7		—		(5.5	)		91.2
Other:
Interest rate swaps		5.7		—		—		(5.2	)		0.5
Total	$	6.0	$	158.7	$	—	$	(73.0	)	$	91.7

							Effects of
	Quoted						Netting
	Prices		Significant		Significant		and Cash
	in Active		Observable		Unobservable		Margin
	Markets		Inputs		Inputs		Receivables
	(Level 1)		(Level 2)		(Level 3)		/Payables			Total
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 September 30, 2021
ASSETS
U.S. stock/bond mutual funds	$	23.8	$	—	$	—	$	—		$	23.8
NYMEX/ICE natural gas contracts		104.0		—		—		(104.0	)		—
Total	$	127.8	$	—	$	—	$	(104.0	)	$	23.8
LIABILITIES
NYMEX/ICE natural gas contracts	$	0.3	$	—	$	—	$	(0.3	)	$	—

XML

Note 10 - Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Derivative Instruments [Table Text Block]

	September 30, 2022				September 30, 2021
Gas Marketing	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		76.3		54		103.3		51
Natural gas options purchased, net		3.7		12		7.1		15
Natural gas basis swaps purchased		61.7		39		101.7		27
Gas Utility
Natural gas futures purchased		13.0		12		52.8		12

	September 30, 2022				September 30, 2021
	Notional (MMBtu millions)		Maximum Term (Months)		Notional (MMBtu millions)		Maximum Term (Months)
Natural gas futures purchased		13.0		12		52.8		12

Derivative Instruments, Gain (Loss) [Table Text Block]

Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income
	Location of Gain (Loss)
	Recorded in Income	2022			2021			2020
Derivatives in Cash Flow Hedging Relationships
Effective portion of gain (loss) recognized in OCI on derivatives:
Interest rate swaps		$	56.7		$	61.2		$	(8.9	)
Effective portion of (loss) gain reclassified from AOCI to income:
Interest rate swaps	Interest Expense	$	(1.2	)	$	(1.3	)	$	(3.2	)
Derivatives Not Designated as Hedging Instruments*
Gain (Loss) recognized in income on derivatives:
Natural gas commodity contracts	Operating Expenses: Natural Gas	$	52.6		$	54.1		$	9.2
NYMEX / ICE natural gas contracts	Operating Expenses: Natural Gas		43.3			(77.5	)		(11.8	)
Total		$	95.9		$	(23.4	)	$	(2.6	)

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

Fair Value of Derivative Instruments in the Consolidated Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	63.6	Current Liabilities: Other	$	—
Subtotal			63.6			—
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		57.8	Current Liabilities: Other		30.7
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other		79.2	Current Liabilities – Other		71.5
	Deferred Charges and Other Assets: Other	12.7		Deferred Credits and Other Liabilities: Other		10.8
Natural gas commodity	Current Assets: Other		53.4	Current Liabilities – Other		55.1
	Deferred Charges and Other Assets: Other		3.1	Deferred Credits and Other Liabilities: Other		10.4
Subtotal			206.2			178.5
Total derivatives		$	269.8		$	178.5
September 30, 2021
Derivatives designated as hedging instruments
Other: Interest rate swaps	Current Assets: Other	$	12.6	Current Liabilities: Other	$	5.7
Subtotal			12.6			5.7
Derivatives not designated as hedging instruments
Gas Utility:
Natural gas contracts	Current Assets: Other		104.0	Current Liabilities: Other		0.3
Gas Marketing:
NYMEX / ICE natural gas contracts	Current Assets: Other	93.9		Current Liabilities – Other		50.1
	Deferred Charges and Other Assets: Other		20.8	Deferred Credits and Other Liabilities: Other		11.9
Natural gas commodity	Current Assets: Other		34.1	Current Liabilities – Other		82.5
	Deferred Charges and Other Assets: Other		1.1	Deferred Credits and Other Liabilities: Other		14.2
Subtotal			253.9			159.0
Total derivatives		$	266.5		$	164.7

Fair Value of Derivative Instruments in the Balance Sheets
	Derivative Assets*			Derivative Liabilities*
September 30, 2022	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	57.8	Current Liabilities: Other	$	30.7
September 30, 2021
Derivatives not designated as hedging instruments
Natural gas contracts	Current Assets: Other	$	104.0	Current Liabilities: Other	$	0.3

Derivative Instrument Reconciliation [Table Text Block]

	2022			2021
Fair value of derivative assets presented above	$	269.8		$	266.5
Fair value of cash margin receivable offset with derivatives		(36.6	)		(135.4	)
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	116.2		$	58.1
Derivative Instrument Assets, per Consolidated Balance Sheets:
Current Assets: Other	$	113.1		$	57.0
Deferred Charges and Other Assets: Other		3.1			1.1
Total	$	116.2		$	58.1
Fair value of derivative liabilities presented above	$	178.5		$	164.7
Netting of assets and liabilities with the same counterparty		(117.0	)		(73.0	)
Total	$	61.5		$	91.7
Derivative Instrument Liabilities, per Consolidated Balance Sheets:
Current Liabilities: Other	$	51.1		$	77.5
Deferred Credits and Other Liabilities: Other		10.4			14.2
Total	$	61.5		$	91.7

	2022			2021
Fair value of derivative assets presented above	$	57.8		$	104.0
Fair value of cash margin (payable) receivable offset with derivatives		(27.1	)		(103.7	)
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—
Fair value of derivative liabilities presented above	$	30.7		$	0.3
Netting of assets and liabilities with the same counterparty		(30.7	)		(0.3	)
Total	$	—		$	—

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Note 12 - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022		2021		2020
Federal:
Current	$	0.5		$	0.2		$	0.4		$	—		$	—		$	—		$	—	$	—	$	—
Deferred		47.0			49.5			5.8			18.2			22.0			14.9			18.1		19.8		17.4
Investment tax credits		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		(0.2	)		—		—		—
State and local:
Current		0.5			1.3			3.0			—			—			0.1			—		—		—
Deferred		11.1			17.7			3.4			3.3			3.5			2.5			5.1		5.2		4.6
Total income tax expense	$	58.9		$	68.5		$	12.4		$	21.3		$	25.3		$	17.3		$	23.2	$	25.0	$	22.0

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Federal income tax statutory rate		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%		21.0	%
State and local income taxes, net of federal income tax benefits		3.6			3.6			9.0			2.6			2.6			2.6			4.1			4.1			4.1
Certain expenses capitalized on books and deducted on tax return		(1.6	)		(1.6	)		(6.6	)		(3.2	)		(3.3	)		(4.6	)		—			—			—
Taxes related to prior years		(0.3	)		(0.5	)		(1.8	)		(0.6	)		(0.2	)		(1.4	)		—			—			0.1
Amortization of excess deferred taxes		(3.5	)		(2.5	)		(8.3	)		(7.3	)		(5.0	)		(5.7	)		—			—			—
Other items – net *		1.9			0.1			(1.0	)		3.1			(0.2	)		(0.2	)		0.2			0.2			(0.1	)
Effective income tax rate		21.1	%		20.1	%		12.3	%		15.6	%		14.9	%		11.7	%		25.3	%		25.3	%		25.1	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Deferred tax assets:
Reserves not currently deductible	$	33.5		$	18.3		$	4.0		$	8.5		$	7.4		$	6.6
Pension and other postretirement benefits		72.6			77.4			52.6			53.4			—			—
Goodwill		—			—			—			—			73.0			87.2
Operating losses		255.1			264.5			116.9			110.3			140.3			130.3
Regulatory amount due to customers, net		34.5			33.2			30.7			29.4			—			—
Other		24.9			32.4			—			—			—			—
Deferred tax assets		420.6			425.8			204.2			201.6			220.7			224.1
Less: Valuation allowance		—			(0.5	)		—			(0.4	)		—			—
Total deferred tax assets		420.6			425.3			204.2			201.2			220.7			224.1
Deferred tax liabilities:
Relating to property		(740.0	)		(693.9	)		(489.3	)		(464.0	)		(201.6	)		(182.7	)
Regulatory pension and other postretirement benefits		(92.8	)		(95.6	)		(72.3	)		(71.2	)		(1.6	)		(1.6	)
Deferred gas costs		(75.8	)		(81.1	)		(74.0	)		(79.5	)		—			—
Other**		(187.1	)		(167.0	)		(68.7	)		(66.5	)		(6.5	)		(5.6	)
Total deferred tax liabilities		(1,095.7	)		(1,037.6	)		(704.3	)		(681.2	)		(209.7	)		(189.9	)
Net deferred tax (liability) asset	$	(675.1	)	$	(612.3	)	$	(500.1	)	$	(480.0	)	$	11.0		$	34.2

Summary of Federal and State Loss and Contribution and Tax Credit Carryforwards[Table Text Block]

	Spire		Spire Missouri		Spire Alabama
Federal and state loss carryforwards	$	1,047.7	$	462.3	$	556.7
Contribution carryforwards		10.4		7.0		0.4
Tax credit carryforwards		4.6		3.4		—

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	Spire								Spire Missouri
	2022			2021		2020			2022		2021		2020
Unrecognized tax benefits, beginning of year	$	16.4		$	13.2	$	10.7		$	16.1	$	13.0	$	10.4
Increases related to tax positions taken in current year		3.3			3.2		2.6			3.2		3.1		2.6
Reductions due to lapse of applicable statute of limitations		(0.1	)		—		(0.1	)		—		—		—
Unrecognized tax benefits, end of year	$	19.6		$	16.4	$	13.2		$	19.3	$	16.1	$	13.0

XML

Note 13 - Pension Plans and Other Postretirement Benefits (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	20.0		$	21.7		$	22.5		$	14.4		$	15.4		$	15.7		$	4.8		$	5.5		$	6.1
Interest cost on projected benefit obligation		21.5			20.7			22.6			14.7			14.2			15.8			4.7			4.6			4.9
Expected return on plan assets		(31.3	)		(31.6	)		(35.0	)		(22.7	)		(22.5	)		(24.6	)		(5.2	)		(5.8	)		(6.9	)
Amortization of prior service (credit) cost		(4.5	)		(3.1	)		(2.5	)		(1.9	)		(0.6	)		0.1			(2.4	)		(2.3	)		(2.4	)
Amortization of actuarial loss		11.9			14.9			14.4			9.6			11.0			11.3			2.4			3.9			3.1
Loss on lump-sum settlements and curtailments		33.6			18.2			31.6			27.3			11.6			26.6			6.3			6.6			5.0
Subtotal		51.2			40.8			53.6			41.4			29.1			44.9			10.6			12.5			9.8
Regulatory adjustment		12.5			20.6			6.6			9.9			19.0			3.9			1.7			0.7			1.8
Net pension cost	$	63.7		$	61.4		$	60.2		$	51.3		$	48.1		$	48.8		$	12.3		$	13.2		$	11.6

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Service cost – benefits earned during the period	$	7.5		$	7.3		$	5.9		$	6.3		$	6.2		$	5.3		$	1.1		$	0.9		$	0.4
Interest cost on accumulated postretirement benefit obligation		6.0			6.0			6.3			4.5			4.5			4.7			1.4			1.3			1.4
Expected return on plan assets		(16.8	)		(16.1	)		(16.7	)		(11.3	)		(10.9	)		(11.4	)		(5.2	)		(4.9	)		(5.0	)
Amortization of prior service cost (credit)		1.0			1.0			(0.5	)		0.7			0.7			(0.2	)		0.3			0.3			(0.3	)
Amortization of actuarial gain		(2.2	)		(1.6	)		(2.0	)		(1.9	)		(1.5	)		(2.0	)		—			—			—
Subtotal		(4.5	)		(3.4	)		(7.0	)		(1.7	)		(1.0	)		(3.6	)		(2.4	)		(2.4	)		(3.5	)
Regulatory adjustment		3.3			13.2			16.0			5.0			15.0			17.7			(1.8	)		(1.8	)		(1.8	)
Net postretirement benefit (income) cost	$	(1.2	)	$	9.8		$	9.0		$	3.3		$	14.0		$	14.1		$	(4.2	)	$	(4.2	)	$	(5.3	)

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial (gain) loss	$	(16.9	)	$	(8.1	)	$	68.0		$	0.9		$	(0.9	)	$	37.8		$	(16.0	)	$	(1.5	)	$	24.4
Amortization of actuarial loss		(11.9	)		(14.9	)		(14.4	)		(9.6	)		(11.0	)		(11.3	)		(2.4	)		(3.9	)		(3.1	)
Acceleration of loss recognized due to settlement		(33.6	)		(18.2	)		(31.7	)		(27.3	)		(11.6	)		(26.6	)		(6.3	)		(6.6	)		(5.1	)
Current year service credit		—			(17.9	)		(4.4	)		—			(17.9	)		(4.4	)		—			—			—
Amortization of prior service credit (cost)		4.5			3.1			2.5			1.9			0.6			(0.1	)		2.4			2.3			2.4
Subtotal		(57.9	)		(56.0	)		20.0			(34.1	)		(40.8	)		(4.6	)		(22.3	)		(9.7	)		18.6
Regulatory adjustment		56.3			57.3			(19.5	)		32.5			42.1			5.1			22.3			9.7			(18.6	)
Total recognized in OCI	$	(1.6	)	$	1.3		$	0.5		$	(1.6	)	$	1.3		$	0.5		$	—		$	—		$	—

	Spire									Spire Missouri									Spire Alabama
	2022			2021			2020			2022			2021			2020			2022			2021			2020
Current year actuarial loss (gain)	$	15.8		$	(41.0	)	$	(7.3	)	$	9.8		$	(29.0	)	$	(7.6	)	$	5.9		$	(9.9	)	$	1.1
Amortization of actuarial gain		2.2			1.6			2.0			1.9			1.5			2.0			—			—			—
Current year prior service (cost) credit		(6.3	)		—			15.8			(1.1	)		—			9.5			(5.2	)		—			6.3
Amortization of prior service (cost) credit		(1.0	)		(1.0	)		0.5			(0.7	)		(0.7	)		0.2			(0.3	)		(0.3	)		0.3
Subtotal		10.7			(40.4	)		11.0			9.9			(28.2	)		4.1			0.4			(10.2	)		7.7
Regulatory adjustment		(10.7	)		40.4			(11.0	)		(9.9	)		28.2			(4.1	)		(0.4	)		10.2			(7.7	)
Total recognized in OCI	$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—		$	—

Schedule of Accumulated and Projected Benefit Obligations [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	689.6		$	732.6		$	479.0		$	505.2		$	149.4		$	163.5
Service cost		20.0			21.7			14.4			15.4			4.8			5.5
Interest cost	21.5				20.7			14.7			14.2			4.7			4.6
Actuarial (gain) loss		(173.9	)		6.6			(116.2	)		11.0			(42.4	)		(1.8	)
Plan amendments		—			(17.9	)		—			(17.9	)		—			—
Settlement loss		33.4			12.3			27.9			8.2			5.6			4.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.9	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Benefit obligation, end of year	$	464.4		$	689.6		$	320.6		$	479.0		$	97.8		$	149.4
Accumulated benefit obligation, end of year	$	457.1		$	673.3		$	315.0		$	465.4		$	96.2		$	146.9

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Benefit obligation, beginning of year	$	204.2		$	212.3		$	151.7		$	158.4		$	48.0		$	48.3
Service cost		7.5			7.3			6.3			6.2			1.1			0.9
Interest cost		6.0			6.0			4.5			4.5			1.4			1.3
Actuarial (gain) loss		(52.6	)		(7.5	)		(37.7	)		(6.7	)		(13.6	)		0.7
Plan amendments		(6.2	)		—			(1.0	)		—			(5.2	)		—
Retiree drug subsidy program		0.2			—			0.2			—			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Benefit obligation, end of year	$	148.1		$	204.2		$	114.8		$	151.7		$	29.9		$	48.0

Schedule of Changes in Fair Value of Plan Assets [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets, beginning of year	$	498.9		$	473.1		$	364.0		$	336.2		$	82.8		$	88.6
Actual return on plan assets		(92.5	)		58.8			(66.7	)		42.7			(15.6	)		9.6
Employer contributions		52.4			53.4			37.8			42.2			14.4			11.1
Settlement benefits paid		(109.3	)		(67.6	)		(87.0	)		(44.6	)		(22.3	)		(22.9	)
Regular benefits paid		(16.8	)		(18.8	)		(12.2	)		(12.5	)		(2.0	)		(3.6	)
Fair value of plan assets, end of year	$	332.7		$	498.9		$	235.9		$	364.0		$	57.3		$	82.8
Funded status of plans, end of year	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Fair value of plan assets at beginning of year	$	326.9		$	291.0		$	221.7		$	199.2		$	99.4		$	87.0
Actual return on plan assets		(51.6	)		49.7			(36.2	)		33.1			(14.3	)		15.6
Employer contributions		0.4			0.1			0.4			0.1			—			—
Benefits paid		(11.0	)		(13.9	)		(9.2	)		(10.7	)		(1.8	)		(3.2	)
Fair value of plan assets, end of year	$	264.7		$	326.9		$	176.7		$	221.7		$	83.3		$	99.4
Funded status of plans, end of year	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4		$	51.4

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Current liabilities	$	(1.1	)	$	(0.8	)	$	(1.1	)	$	(0.8	)	$	—		$	—
Noncurrent liabilities		(130.6	)		(189.9	)		(83.6	)		(114.2	)		(40.5	)		(66.6	)
Total	$	(131.7	)	$	(190.7	)	$	(84.7	)	$	(115.0	)	$	(40.5	)	$	(66.6	)

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022		2021
Noncurrent assets	$	151.6		$	170.2		$	96.9		$	117.5		$	53.4	$	51.4
Current liabilities		(0.3	)		(0.5	)		(0.3	)		(0.5	)		—		—
Noncurrent liabilities		(34.7	)		(47.0	)		(34.7	)		(47.0	)		—		—
Total	$	116.6		$	122.7		$	61.9		$	70.0		$	53.4	$	51.4

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial loss	$	132.0		$	194.6		$	93.6		$	129.6		$	41.2		$	66.1
Prior service credit		(35.7	)		(40.3	)		(18.1	)		(20.1	)		(16.3	)		(18.7	)
Subtotal		96.3			154.3			75.5			109.5			24.9			47.4
Adjustments for amounts included in regulatory assets		(93.1	)		(149.5	)		(72.3	)		(104.7	)		(24.9	)		(47.4	)
Total	$	3.2		$	4.8		$	3.2		$	4.8		$	—		$	—

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Net actuarial gain	$	(83.3	)	$	(101.2	)	$	(74.2	)	$	(85.8	)	$	(5.6	)	$	(11.5	)
Prior service cost (credit)		7.1			14.6			7.9			9.7			(0.8	)		4.9
Subtotal		(76.2	)		(86.6	)		(66.3	)		(76.1	)		(6.4	)		(6.6	)
Adjustments for amounts included in regulatory assets		76.2			86.6			66.3			76.1			6.4			6.6
Total	$	—		$	—		$	—		$	—		$	—		$	—

Defined Benefit Plan, Assumptions [Table Text Block]

	2022		2021		2020
Weighted average discount rate - Spire Missouri East plan		3.00%		2.85%		3.20%
Weighted average discount rate - Spire Missouri West plan		3.00%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

	2022		2021		2020
Weighted average discount rate		3.10%/3.0%		2.95%/2.80%		3.25%/3.20%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets		6.75%		6.75%		7.25%

	2022		2021
Weighted average discount rate - Spire Missouri East plan		5.70%		3.00%
Weighted average discount rate - Spire Missouri West plan		5.80%		3.00%
Weighted average discount rate - Spire Alabama plans		5.70%/5.65%		3.1%/3.0%
Weighted average rate of future compensation increase		3.00%		3.00%
Cash balance interest crediting rate - Spire Alabama / Spire Missouri		4.25%		4.25%

	2022		2021		2020
Weighted average discount rate - Spire Missouri plans		2.95%		2.75%		3.15%
Weighted average rate of future compensation increase		3.00%		3.00%		3.00%
Expected long-term rate of return on plan assets - Spire Missouri plans		5.75%		5.75%		6.25%

	2022		2021		2020
Weighted average discount rate		2.95%		2.75%		3.15%
Expected long-term rate of return on plan assets	5.00%/6.25%		5.00%/6.25%		5.00%/6.25%

	2022		2021
Weighted average discount rate - Spire Alabama plans		5.80%		2.95%
Weighted average discount rate - Spire Missouri plans		5.80%		2.95%
Weighted average rate of future compensation increase - Spire Missouri East plans		3.00%		3.00%

Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]

	Spire				Spire Missouri				Spire Alabama
	2022		2021		2022		2021		2022		2021
Projected benefit obligation	$	464.4	$	689.6	$	320.6	$	479.0	$	97.8	$	149.4
Accumulated benefit obligation		457.1		673.3		315.0		465.4		96.2		146.9
Fair value of plan assets		332.7		498.9		235.9		364.0		57.3		82.8

Schedule of Allocation of Plan Assets [Table Text Block]

Spire Missouri	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		74.3	%		70.0	%		74.5	%
Liability hedging assets		30.0	%		22.8	%		30.0	%		23.1	%
Cash and cash equivalents		—	%		2.9	%		—	%		2.4	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Spire Alabama	2022 Target			2022 Actual			2021 Target			2021 Actual
Return seeking assets		70.0	%		68.7	%		70.0	%		72.8	%
Liability hedging assets		30.0	%		25.3	%		30.0	%		25.5	%
Cash and cash equivalents		—	%		6.0	%		—	%		1.7	%
Total		100.0	%		100.0	%		100.0	%		100.0	%

Spire Missouri	Target			2022 Actual			2021 Actual
Equity securities		60.0	%		58.7	%		59.2	%
Debt securities		40.0	%		40.5	%		38.9	%
Cash and cash equivalents		—	%		0.8	%		1.9	%
Total		100.0	%		100.0	%		100.0	%

Spire Alabama	Target			2022 Actual			2021 Actual
Equity securities		60.5	%		57.7	%		60.5	%
Debt securities		39.5	%		42.3	%		39.5	%
Total		100.0	%		100.0	%		100.0	%

Schedule of Expected Benefit Payments [Table Text Block]

	2023		2024		2025		2026		2027			2028- 2032
Spire	$	55.8	$	52.3	$	47.2	$	44.0	$	43.5	$	202.9
Spire Missouri		41.4		38.9		33.9		30.8		29.6		137.5
Spire Alabama		11.3		10.2		9.9		9.7		10.4		46.4

	2023		2024		2025		2026		2027			2028 - 2032
Spire	$	13.7	$	14.4	$	14.6	$	14.5	$	14.7	$	69.5
Spire Missouri		11.6		12.2		12.3		12.2		12.2		55.7
Spire Alabama		1.9		2.0		2.1		2.1		2.2		11.9

Schedule of Health Care Cost Trend Rates [Table Text Block]

	2022		2021
Medical cost trend assumed for next year - Spire Missouri		6.75%		7.00%
Medical cost trend assumed for next year - Spire Alabama		6.75%		7.00%
Rate to which the medical cost trend rate is assumed to decline (the ultimate medical cost trend rate)		5.00%		5.00%
Year the rate reaches the ultimate trend		2028		2028

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	11.5	$	—	$	—	$	11.5
Equity funds - global (including U.S.)		—		122.2		—		122.2
Real asset funds		—		61.0		—		61.0
Debt securities:
U.S. bond funds		42.3		—		—		42.3
U.S. government index funds		36.1		—		—		36.1
Global funds (including U.S.)		—		59.6		—		59.6
Total	$	89.9	$	242.8	$	—	$	332.7
As of September 30, 2021
Cash and cash equivalents	$	10.6	$	—	$	—	$	10.6
Equity funds - global (including U.S.)		—		201.2		—		201.2
Real asset funds		—		87.7		—		87.7
Debt securities:
U.S. bond funds		58.4		—		—		58.4
U.S. government index funds		60.1		—		—		60.1
Global funds (including U.S.)		—		80.9		—		80.9
Total	$	129.1	$	369.8	$	—	$	498.9

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
U.S. stock/bond mutual funds		177.1		69.4		—		246.5
International fund		0.8		13.9		—		14.7
Total	$	181.4	$	83.3	$	—	$	264.7
As of September 30, 2021
Cash and cash equivalents	$	3.1	$	—	$	—	$	3.1
U.S. stock/bond mutual funds		223.2		82.5		—		305.7
International fund		1.2		16.9		—		18.1
Total	$	227.5	$	99.4	$	—	$	326.9

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	5.7	$	—	$	—	$	5.7
Equity funds - global (including U.S.)		—		85.7		—		85.7
Real asset funds		—		47.2		—		47.2
Debt securities:
U.S. bond funds		29.4		—		—		29.4
U.S. government index funds		24.6		—		—		24.6
Global funds (including U.S.)		—		43.3		—		43.3
Total	$	59.7	$	176.2	$	—	$	235.9
As of September 30, 2021
Cash and cash equivalents	$	8.3	$	—	$	—	$	8.3
Equity funds - global (including U.S.)		—		148.6		—		148.6
Real asset funds		—		59.2		—		59.2
Debt securities:
U.S. bond funds		38.4		—		—		38.4
U.S. government index funds		45.6		—		—		45.6
Global funds (including U.S.)		—		63.9		—		63.9
Total	$	92.3	$	271.7	$	—	$	364.0

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	2.7	$	—	$	—	$	2.7
U.S. stock/bond mutual funds		174.0		—		—		174.0
Total	$	176.7	$	—	$	—	$	176.7
As of September 30, 2021
Cash and cash equivalents	$	2.4	$	—	$	—	$	2.4
U.S. stock/bond mutual funds		219.3		—		—		219.3
Total	$	221.7	$	—	$	—	$	221.7

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
Cash and cash equivalents	$	3.5	$	—	$	—	$	3.5
Equity funds - global (including U.S.)		—		21.6		—		21.6
Real asset funds		—		8.1		—		8.1
Debt securities:
U.S. bond funds		7.7		—		—		7.7
U.S. government index funds		6.8		—		—		6.8
Global funds (including U.S.)		—		9.6		—		9.6
Total	$	18.0	$	39.3	$	—	$	57.3
As of September 30, 2021
Cash and cash equivalents	$	1.4	$	—	$	—	$	1.4
Equity funds - global (including U.S.)		—		32.3		—		32.3
Real asset funds		—		14.6		—		14.6
Debt securities:
U.S. bond funds		12.3		—		—		12.3
U.S. government index funds		8.9		—		—		8.9
Global funds (including U.S.)		—		13.3		—		13.3
Total	$	22.6	$	60.2	$	—	$	82.8

	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
As of September 30, 2022
U.S. stock/bond mutual funds	$	—	$	69.4	$	—	$	69.4
International fund		—		13.9		—		13.9
Total	$	—	$	83.3	$	—	$	83.3
As of September 30, 2021
U.S. stock/bond mutual funds	$	—	$	82.5	$	—	$	82.5
International fund		—		16.9		—		16.9
Total	$	—	$	99.4	$	—	$	99.4

XML

Note 14 - Information by Operating Segment (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

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

	Gas		Gas
2022	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,945.6	$	234.9	$	18.0		$	—		$	2,198.5
Intersegment revenues		0.5		—		51.2			(51.7	)		—
Total Operating Revenues		1,946.1		234.9		69.2			(51.7	)		2,198.5
Operating Expenses
Natural gas		788.8		171.4		—			(36.3	)		923.9
Other operation and maintenance		413.3		14.6		37.1			(15.4	)		449.6
Depreciation and amortization		227.9		1.4		8.0			—			237.3
Taxes, other than income taxes		176.2		0.6		2.7			—			179.5
Total Operating Expenses		1,606.2		188.0		47.8			(51.7	)		1,790.3
Operating Income	$	339.9	$	46.9	$	21.4		$	—		$	408.2
Net Economic Earnings (Loss)	$	202.7	$	27.0	$	(13.4	)	$	—		$	216.3
Capital Expenditures	$	528.6	$	0.9	$	22.7		$	—		$	552.2

	Gas		Gas
2021	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	2,118.2	$	96.5	$	20.8		$	—		$	2,235.5
Intersegment revenues		1.1		—		46.9			(48.0	)		—
Total Operating Revenues		2,119.3		96.5		67.7			(48.0	)		2,235.5
Operating Expenses
Natural gas		961.7		18.8		0.1			(34.3	)		946.3
Other operation and maintenance		422.2		17.1		40.2			(13.7	)		465.8
Depreciation and amortization		204.4		1.2		7.5			—			213.1
Taxes, other than income taxes		157.0		0.9		2.2			—			160.1
Impairments		—		—		—			—			—
Total Operating Expenses		1,745.3		38.0		50.0			(48.0	)		1,785.3
Operating Income	$	374.0	$	58.5	$	17.7		$	—		$	450.2
Net Economic Earnings (Loss)	$	230.6	$	47.0	$	(11.3	)	$	—		$	266.3
Capital Expenditures	$	590.4	$	0.7	$	33.7		$	—		$	624.8

	Gas		Gas
2020	Utility		Marketing		Other			Eliminations			Consolidated
Revenues from external customers	$	1,751.8	$	87.9	$	15.7		$	—		$	1,855.4
Intersegment revenues		0.2		—		42.1			(42.3	)		—
Total Operating Revenues		1,752.0		87.9		57.8			(42.3	)		1,855.4
Operating Expenses
Natural gas		660.2		65.1		0.4			(29.6	)		696.1
Other operation and maintenance		421.3		11.8		38.2			(12.7	)		458.6
Depreciation and amortization		189.7		0.6		7.0			—			197.3
Taxes, other than income taxes		146.5		1.1		0.8			—			148.4
Impairments		—		—		148.6			—			148.6
Total Operating Expenses		1,417.7		78.6		195.0			(42.3	)		1,649.0
Operating Income (Loss)	$	334.3	$	9.3	$	(137.2	)	$	—		$	206.4
Net Economic Earnings (Loss)	$	213.4	$	9.1	$	(14.7	)	$	—		$	207.8
Capital Expenditures	$	547.8	$	3.6	$	87.0		$	—		$	638.4

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

Total Assets at End of Year	2022			2021			2020
Gas Utility	$	8,042.8		$	7,615.4		$	6,716.2
Gas Marketing		638.7			466.1			182.7
Other		2,895.2			2,351.7			2,443.5
Eliminations		(1,493.0	)		(1,076.8	)		(1,101.2	)
Total Assets	$	10,083.7		$	9,356.4		$	8,241.2

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

Reconciliation of Consolidated Net Income to Consolidated Net Economic Earnings	2022			2021			2020
Net Income	$	220.8		$	271.7		$	88.6
Adjustments, pre-tax:
Impairments		—			—			148.6
Missouri regulatory adjustments		—			(9.0	)		—
Fair value and timing adjustments		(11.4	)		3.3			2.5
Acquisition, divestiture and restructuring activities		—			(1.3	)		—
Income tax effect of adjustments		6.9			1.6			(31.9	)
Net Economic Earnings	$	216.3		$	266.3		$	207.8

XML

Note 15 - Regulatory Matters (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Regulatory Assets and Liabilities [Table Text Block]

	Spire				Spire Missouri				Spire Alabama
September 30	2022		2021		2022		2021		2022		2021
Regulatory Assets:
Current:
Pension and postretirement benefit costs	$	—	$	31.1	$	—	$	21.9	$	—	$	8.2
Unamortized purchased gas adjustments		322.2		243.5		275.1		242.8		43.8		—
Other		33.2		31.9		13.0		11.6		13.1		10.6
Total Current Regulatory Assets		355.4		306.5		288.1		276.3		56.9		18.8
Noncurrent:
Future income taxes due from customers		137.8		132.9		129.2		124.2		2.2		2.2
Pension and postretirement benefit costs		294.5		313.8		222.9		226.0		66.5		82.9
Cost of removal		493.7		431.9		25.2		34.9		468.5		397.0
Energy efficiency		57.2		47.6		57.2		47.6		—		—
Other		129.2		67.3		113.1		50.4		1.0		1.2
Total Noncurrent Regulatory Assets		1,112.4		993.5		547.6		483.1		538.2		483.3
Total Regulatory Assets	$	1,467.8	$	1,300.0	$	835.7	$	759.4	$	595.1	$	502.1
Regulatory Liabilities:
Current:
Pension and postretirement benefit costs	$	—	$	5.8	$	—	$	3.6	$	—	$	2.2
Unamortized purchased gas adjustments		—		11.0		—		—		—		10.2
Other		3.7		17.8		—		13.5		—		1.0
Total Current Regulatory Liabilities		3.7		34.6		—		17.1		—		13.4
Noncurrent:
Deferred taxes due to customers		145.3		127.5		127.9		110.2		—		—
Pension and postretirement benefit costs		172.6		159.3		143.6		131.4		19.4		19.8
Accrued cost of removal		32.9		36.2		—		4.9		—		—
Unamortized purchased gas adjustments		53.0		284.3		53.0		284.3		—		—
Other		14.4		13.6		7.3		8.0		3.6		3.6
Total Noncurrent Regulatory Liabilities		418.2		620.9		331.8		538.8		23.0		23.4
Total Regulatory Liabilities	$	421.9	$	655.5	$	331.8	$	555.9	$	23.0	$	36.8

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

	Spire				Spire Missouri
September 30	2022		2021		2022		2021
Pension and postretirement benefit costs	$	152.9	$	165.7	$	152.9	$	165.7
Future income taxes due from customers		135.6		130.7		129.2		124.2
Unamortized purchase gas adjustments		275.1		242.8		275.1		242.8
Other		122.7		86.0		122.7		86.0
Total Regulatory Assets Not Earning a Return	$	686.3	$	625.2	$	679.9	$	618.7

XML

Note 17 - Leases (Tables)

12 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Operating Lease Cost, Cash Flow and Non Cash Information [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022		2021		2020		2022		2021		2020		2022		2021		2020
Operating lease cost, including amounts capitalized	$	7.4	$	7.2	$	8.7	$	0.5	$	0.4	$	0.5	$	2.1	$	2.1	$	3.5
Cash flow and noncash information about operating leases:
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities		7.3		7.2		8.5		0.5		0.4		0.5		2.1		2.1		3.3
Right-of-use assets obtained in exchange for lease liabilities		24.6		—		71.1		1.1		—		2.1		23.5		—		10.0

Schedule of Balance Sheet and Weighted Average Information About Operating Leases [Table Text Block]

	Spire						Spire Missouri						Spire Alabama
	2022			2021			2022			2021			2022			2021
Right-of-use assets	$	73.7		$	60.4		$	1.7		$	1.4		$	20.2		$	4.8
Lease liabilities, current		6.5			6.5			0.4			0.3			1.9			1.9
Lease liabilities, noncurrent		73.7			53.7			1.5			1.0			24.6			2.7
Weighted-average remaining lease term (in years)		15.0			15.3			5.1			4.5			14.3			2.3
Weighted-average discount rate		4.1	%		4.2	%		2.2	%		2.5	%		3.7	%		2.2	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	Spire			Spire Missouri			Spire Alabama
2023	$	6.7		$	0.4		$	1.9
2024		7.3			0.5			2.1
2025		7.4			0.4			2.1
2026		7.3			0.3			2.2
2027		7.3			0.2			2.3
Thereafter		72.8			0.2			24.1
Total undiscounted lease payments		108.8			2.0			34.7
Less present value discount		(28.6	)		(0.1	)		(8.2	)
Total current and noncurrent lease liabilities	$	80.2		$	1.9		$	26.5

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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Millions	3 Months Ended		12 Months Ended
	Sep. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Number of Reportable Segments			2
Difference Between Replacement Cost of Gas Storage and Inventory Basis Amount			$ 37.3	$ 14.0
Goodwill, Ending Balance	$ 1,171.6		1,171.6	1,171.6
Impairment, Long-Lived Asset, Held-for-Use, Total			0.0	0.0	$ 148.6
Restricted Cash, Total	7.0		14.0	$ 7.0
Gas Utility [Member]
Goodwill, Ending Balance			$ 210.2
Spire Alabama Inc [Member]
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service			3.00%	3.00%	3.00%
Financing Receivable, after Allowance for Credit Loss, Total	7.8		$ 7.1	$ 7.8
Spire Alabama Inc [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total	0.3		$ 0.3	$ 0.3
Spire Missouri [Member]
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service			3.00%	3.00%	3.00%
Goodwill, Ending Balance	$ 210.2		$ 210.2	$ 210.2
Spire Storage West Limited Liability Company [Member]
Number of Fueling Stations Sold	1
Gain (Loss) on Disposition of Property Plant Equipment, Total	$ 1.3
Spire Storage West Limited Liability Company [Member] | Non Utility Property [Member]
Impairment, Long-Lived Asset, Held-for-Use, Total		$ 140.8
Number of Commercial Stations Impaired		2
Spire Storage West Limited Liability Company [Member] | Two Compressed Natural Gas Fueling Stations Non Utility Property [Member]
Impairment, Long-Lived Asset, Held-for-Use, Total		$ 7.8

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Note 1 - Summary of Significant Accounting Policies - Accrued Capital Expenditures Excluded From Capital Expenditures in the Statements of Cash Flows (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Accrued capital expenditures	$ 77.8	$ 59.5	$ 67.6
Spire Missouri [Member]
Accrued capital expenditures	45.6	37.1	34.3
Spire Alabama Inc [Member]
Accrued capital expenditures	$ 19.2	$ 13.6	$ 17.0

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Note 1 - Summary of Significant Accounting Policies - Schedule of Asset Retirement Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Asset retirement obligations, beginning of year	$ 519.6	$ 540.1
Liabilities incurred during the period	3.2	11.1
Liabilities settled during the period	(9.2)	(21.9)
Accretion	21.1	21.8
Revisions in estimated cash flows	(13.8)	(31.5)
Asset retirement obligations, end of year	520.9	519.6
Spire Missouri [Member]
Asset retirement obligations, beginning of year	143.4	153.4
Liabilities incurred during the period	1.2	1.4
Liabilities settled during the period	(4.1)	(9.7)
Accretion	5.9	6.2
Revisions in estimated cash flows	(35.8)	(7.9)
Asset retirement obligations, end of year	110.6	143.4
Spire Alabama Inc [Member]
Asset retirement obligations, beginning of year	362.8	374.3
Liabilities incurred during the period	0.5	7.4
Liabilities settled during the period	(2.0)	(10.7)
Accretion	14.7	15.0
Revisions in estimated cash flows	22.7	(23.2)
Asset retirement obligations, end of year	$ 398.7	$ 362.8

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Note 1 - Summary of Significant Accounting Policies - Transactions With Affiliates (Details) - Affiliated Entity [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Regulated Operation [Member] | Spire Marketing [Member] | Spire Missouri [Member]
Natural gas purchases from Spire Marketing	$ 86.3	$ 92.5	$ 56.9
Natural gas sales to Spire Marketing	0.0	1.1	0.1
Regulated Operation [Member] | Spire Marketing [Member] | Spire Alabama Inc [Member]
Natural gas purchases from Spire Marketing	3.2	10.4	6.3
Natural gas sales to Spire Marketing	0.5	0.1	0.3
Unregulated Operation [Member] | Spire S T L Pipeline L L C [Member] | Spire Missouri [Member]
Transportation services expense	32.0	32.0	27.9
Unregulated Operation [Member] | Spire S T L Pipeline L L C [Member] | Spire Alabama Inc [Member]
Transportation services expense	0.0	0.0	0.0
Unregulated Operation [Member] | Spire N G L Inc [Member] | Spire Missouri [Member]
Transportation services expense	0.0	0.5	1.0
Unregulated Operation [Member] | Spire N G L Inc [Member] | Spire Alabama Inc [Member]
Transportation services expense	$ 0.0	$ 0.0	$ 0.0

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Note 1 - Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Allowance at beginning of year	$ 30.3	$ 24.9	$ 23.0
Provision for expected credit losses	11.6	14.7	14.0
Write-offs, net of recoveries	(10.0)	(9.3)	(12.1)
Allowance at end of year	31.9	30.3	24.9
Spire Missouri [Member]
Allowance at beginning of year	22.6	18.1	14.9
Provision for expected credit losses	11.2	11.1	12.7
Write-offs, net of recoveries	(8.9)	(6.6)	(9.5)
Allowance at end of year	24.9	22.6	18.1
Spire Alabama Inc [Member]
Allowance at beginning of year	6.6	5.5	6.3
Provision for expected credit losses	0.3	3.1	0.9
Write-offs, net of recoveries	(0.6)	(2.0)	(1.7)
Allowance at end of year	$ 6.3	$ 6.6	$ 5.5

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Note 2 - Revenue - Disaggregated of Revenue (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 28, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Operating Revenues		$ 2,198.5	$ 2,235.5	$ 1,855.4
Consolidation, Eliminations [Member]
Operating Revenues		(51.7)	(48.0)	(42.3)
Gas Utility [Member] | Operating Segments [Member]
Operating Revenues		1,946.1	2,119.3	1,752.0
Gas Marketing [Member] | Operating Segments [Member]
Operating Revenues		234.9	96.5	87.9
Other Segments [Member] | Operating Segments [Member]
Operating Revenues		69.2	67.7	57.8
Spire [Member]
Operating Revenues		2,198.5	2,235.5	1,855.4
Spire [Member] | Operating Segments [Member]
Operating Revenues		2,250.2	2,283.5	1,897.7
Spire [Member] | Consolidation, Eliminations [Member]
Operating Revenues		(51.7)		(42.3)
Spire [Member] | Segment Reconciling Items [Member]
Operating Revenues			(48.0)
Spire [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue		1,935.4	2,117.8	1,747.7
Changes in accrued revenue under alternative revenue programs		10.7	1.5	4.3
Total Gas Utility operating revenues		1,946.1	2,119.3	1,752.0
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue		1,416.6	1,234.0	1,184.3
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue		338.9	586.0	383.0
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue		118.0	122.9	115.8
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Inventive [Member]
Revenue		42.0	152.7	38.4
Spire [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue		19.9	22.2	26.2
Spire [Member] | Gas Marketing [Member] | Operating Segments [Member]
Unregulated Operating Revenue		234.9	96.5	87.9
Spire [Member] | Other Segments [Member] | Operating Segments [Member]
Unregulated Operating Revenue		69.2	67.7	57.8
Spire Missouri [Member]
Changes in accrued revenue under alternative revenue programs		12.8	3.0	2.3
Total Gas Utility operating revenues	$ 100.0
Operating Revenues		1,321.0	1,516.6	1,193.6
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue		1,308.2	1,513.6	1,191.3
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue		1,061.4	882.1	859.6
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue		177.2	436.1	241.4
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue		33.3	33.5	32.9
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Inventive [Member]
Revenue		25.2	145.6	35.1
Spire Missouri [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue		11.1	16.3	22.3
Spire Alabama Inc [Member]
Changes in accrued revenue under alternative revenue programs		1.7	3.4	(0.2)
Operating Revenues		509.1	494.0	455.0
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member]
Revenue		507.4	490.6	455.2
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Residential [Member]
Revenue		291.6	288.0	267.8
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Commercial and Industrial [Member]
Revenue		119.1	114.9	109.4
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Transportation [Member]
Revenue		74.4	78.7	72.9
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Off-system and Other Inventive [Member]
Revenue		16.8	7.1	3.2
Spire Alabama Inc [Member] | Gas Utility [Member] | Operating Segments [Member] | Other Customer Revenue [Member]
Revenue		$ 5.5	$ 1.9	$ 1.9

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Note 2 - Revenue - Taxes Associated With Natural Gas Utility Services (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Gross Receipts Tax Amounts	$ 109.8	$ 94.0	$ 91.5
Spire Missouri [Member]
Gross Receipts Tax Amounts	79.6	64.3	63.5
Spire Alabama Inc [Member]
Gross Receipts Tax Amounts	$ 25.5	$ 25.1	$ 23.3

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Note 3 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			36 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	1,000,000			1,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 11.2			$ 11.2
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 8 months 12 days
Performance-contingent Restricted Share Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	128,396
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 67.43
Performance-contingent Restricted Share Units [Member] | Executive Officers and Key Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	128,396
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 67.43	$ 68.69	$ 76.19
Share Based Compensation Arrangement By Share Based Payment Award, Maximum Target Award Percentage	200.00%
Share Based Compensation Arrangement By Share Based Payment Award, Number of Shares to Be Issued at Maximum Performance Target (in shares)	687,048
Time-vested Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	62,945
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 63.57
Time-vested Restricted Stock [Member] | Executive Officers and Key Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	62,945
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 63.57	64.29	76.13
Time-vested Restricted Stock [Member] | Non Employee Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	16,290
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 66.31	$ 62.35	$ 84.58
Performance-contingent Restricted Stock Unit and Time-vested Restricted Stocks [Member]
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	28,055	16,787	41,353
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Withheld for Tax Withholding Obligations, Weighted Average Price Per Share (in dollars per share)	$ 63.97	$ 65.99	$ 77.07	$ 63.97
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 10.1	$ 6.5	$ 9.8
Share Based Compensation Tax Benefit Realized From Exercise Of Equity Instruments Other Than Stock Options	$ 3.8	$ 2.5	$ 3.7
Share Based Compensation Arrangement By Share Based Payment Award, Number of Shares Elected to Be Defer at Target Payout (in shares)				228,988

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Note 3 - Stock-based Compensation - Activity of Restricted Stock Units (Details)	12 Months Ended
	Sep. 30, 2022 $ / shares shares
Performance-contingent Restricted Share Units [Member]
Nonvested, units (in shares) | shares	312,596
Nonvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 74.33
Granted, units (in shares) | shares	128,396
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 67.43
Vested, units (in shares) | shares	(91,111)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 79.40
Forfeited, units (in shares) | shares	(6,357)
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	$ 69.43
Nonvested, units (in shares) | shares	343,524
Nonvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 70.14
Time-vested Restricted Stock [Member]
Nonvested, units (in shares) | shares	110,300
Nonvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 70.98
Granted, units (in shares) | shares	62,945
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 63.57
Vested, units (in shares) | shares	(46,970)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 72.67
Forfeited, units (in shares) | shares	(4,030)
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	$ 68.62
Nonvested, units (in shares) | shares	122,245
Nonvested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 66.60

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Note 3 - Stock-based Compensation - Schedule of Significant Assumptions (Details)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Risk-free interest rate	0.79%	0.22%	1.57%
Expected dividend yield of stock	0.00%	0.00%	0.00%
Expected volatility of stock	32.20%	31.40%	16.80%
Vesting period (in years) (Year)	3 years	3 years	3 years

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Note 3 - Stock-based Compensation - Compensation Cost of Share-based Compensation Arrangements (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Total compensation cost	$ 7.5	$ 16.6	$ 9.4
Compensation cost capitalized	(1.1)	(2.7)	(0.6)
Compensation cost recognized in net income	6.4	13.9	8.8
Income tax benefit recognized in net income	(1.5)	(3.2)	(2.1)
Compensation cost recognized in net income, net of income tax	$ 4.9	$ 10.7	$ 6.7

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Note 4 - Earnings Per Common Share - Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		12 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Net Income		$ 220.8	$ 271.7	$ 88.6
Provision for preferred dividends		14.8	14.8	14.8
Income allocated to participating securities		0.3	0.4	0.1
Net Income Available to Common Shareholders		$ 205.7	$ 256.5	$ 73.7
Basic (in shares)		52.0	51.6	51.2
Basic Earnings Per Share of Common Stock (in dollars per share)		$ 3.96	$ 4.97	$ 1.44
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)* (in shares)	[1]	0.1	0.1	0.1
Weighted Average Diluted Common Shares (in millions) (in shares)		52.1	51.7	51.3
Diluted Earnings Per Share of Common Stock (in dollars per share)		$ 3.95	$ 4.96	$ 1.44
* Calculation excludes certain outstanding common shares (shown in millions by period at the right) attributable to stock units subject to performance or market conditions and restricted stock, which could have a dilutive effect in the future (in shares)		0.1	0.1	0.1

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

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Note 5 - Shareholders' Equity (Details Textual) - USD ($)		1 Months Ended	3 Months Ended		12 Months Ended	24 Months Ended
	May 21, 2019	Feb. 28, 2021	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Mar. 01, 2024	Nov. 11, 2022	Apr. 28, 2022
Preferred Stock, Shares Authorized (in shares)					5,000,000	5,000,000
Number of Shares Authorized for Issuance (in shares)					250,000
Number Of Shares Remaining and Available for Issuance (in shares)					158,535
Retained Earnings Dividend Restrictions Formula Component Fixed Amount					$ 8,000,000.0
Retained Earnings, Unappropriated					$ 1,579,400,000	$ 1,413,400,000
Spire Missouri [Member]
Preferred Stock, Shares Authorized (in shares)					1,480,000	1,480,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares)					0	0
Stock Issued During Period, Value, New Issues					$ 51,100,000
Regulatory Preferred Stock and Debt Securities Issuance Amount Authorized					$ 800,000,000.0
Preferred Stock, Shares Issued (in shares)					0	0
Spire Alabama Inc [Member]
Preferred Stock, Shares Authorized (in shares)					120,000	120,000
Preferred Stock, Shares Outstanding, Ending Balance (in shares)					0	0
Preferred Stock, Shares Issued (in shares)					0	0
Forecast [Member]
Number Of Shares Remaining and Available for Issuance (in shares)								153,190
At The Market Program [Member]
Stock Issued During Period, Shares, New Issues (in shares)			365,625	354,000		626,249
Stock Issued During Period, Value, New Issues			$ 27,700,000	$ 23,500,000		$ 47,800,000
Number of Shares Authorized for Issuance (in shares)									200,000,000.0
Common Stock [Member] | Spire Missouri [Member]
Stock Issued During Period, Shares, New Issues (in shares)					748
Stock Issued During Period, Value, New Issues					$ 0
Parent Company [Member]
Present Value of Stock Purchase Contract Payment					$ 35,000,000.0
Parent Company [Member] | Common Stock [Member] | Minimum [Member]
Number of Shares to Be Purchased Per Stock Purchase Contract Settlement Rate (in shares)		0.6354
Parent Company [Member] | Common Stock [Member] | Minimum [Member] | Forecast [Member]
Number of Shares to Be Purchased Per Stock Purchase Contract Settlement Rate (in shares)							0.6354
Parent Company [Member] | Two Thousand Twenty One Series A Zero Point Seven Five Percentage Remarketable Senior Notes [Member]
Debt Instrument, Face Amount		$ 1,000
Debt Instrument, Interest Rate, Stated Percentage		0.75%
Stock Purchase Contracts Rate		6.75%
Redemption Prior to August Fifteen Two Thousand Twenty Four [Member]
Preferred Stock, Redemption Price Per Share (in dollars per share)					$ 25,500
Redemption on Or After August Fifteen Two Thousand Twenty Four [Member]
Preferred Stock, Redemption Price Per Share (in dollars per share)					$ 25,000
Depositary Shares [Member]
Preferred Stock, Shares Authorized (in shares)					10,000,000.0	10,000,000.0
Preferred Stock, Shares Outstanding, Ending Balance (in shares)	10,000,000				10,000,000.0	10,000,000.0
Preferred Stock, Share Interest Rate	0.001%
Preferred Stock, Dividend Rate, Percentage	5.90%
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 25.00				$ 25.00	$ 25.00
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 25,000
Proceeds from Issuance of Preferred Stock and Preference Stock	$ 242,000,000.0
Preferred Stock, Shares Issued (in shares)					10,000,000.0	10,000,000.0
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage	5.90%
Corporate Unit [Member] | Parent Company [Member]
Stock Issued During Period, Shares, New Issues (in shares)		3,500,000
Equity Stock Units Issued		$ 175,000,000.0
Proceeds from Issuance or Sale of Equity, Total		$ 169,300,000
Equity Units, Stated Value (in dollars per share)		$ 50
Percentage of Undivided Beneficial Ownership Interest		5.00%
Shares Issued, Price Per Share (in dollars per share)		$ 50

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Note 5 - Shareholders' Equity - Number of Shares to be Purchased Per Stock Purchase Contract (Details) - Common Stock [Member] - Parent Company [Member] - $ / shares	Mar. 01, 2024	Feb. 28, 2021
Forecast [Member]
Less than $78.6906, but greater than $64.24 (in dollars per share)	$ 50.00
Minimum [Member]
Equal to or greater than $78.6906 (“threshold appreciation price”) (in shares)		0.6354
Minimum [Member] | Forecast [Member]
Equal to or greater than $78.6906 (“threshold appreciation price”) (in shares)	0.6354
Maximum [Member] | Forecast [Member]
Equal to or greater than $78.6906 (“threshold appreciation price”) (in shares)	0.7783

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Note 5 - Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2022	Sep. 30, 2021		Sep. 30, 2020
Balance		$ 2,658.2	$ 2,522.3		$ 2,543.0
Other Comprehensive Income (Loss), Net of Tax		43.6	44.8		(9.9)
Balance		2,818.5	2,658.2		2,522.3
Spire Missouri [Member]
Balance	[1]	1,577.9	1,435.1		1,339.3
Other Comprehensive Income (Loss), Net of Tax		1.5	(1.3)	[1]	(0.5)
Balance	[1]	1,745.4	1,577.9		1,435.1
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance		7.9	(38.4)
Other Comprehensive Income (Loss), Net of Tax		42.5	46.3
Balance		50.4	7.9		(38.4)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] | Spire Missouri [Member]
Balance		0.0	0.0
Other Comprehensive Income (Loss), Net of Tax		0.0	0.0
Balance		0.0	0.0		0.0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance		(4.2)	(2.9)
Other Comprehensive Income (Loss), Net of Tax		1.5	(1.3)
Balance		(2.7)	(4.2)		(2.9)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Spire Missouri [Member]
Balance		(4.2)	(2.9)
Other Comprehensive Income (Loss), Net of Tax		1.5	(1.3)
Balance		(2.7)	(4.2)		(2.9)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance		(0.1)	0.1
Other Comprehensive Income (Loss), Net of Tax		(0.4)	(0.2)
Balance		(0.5)	(0.1)		0.1
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] | Spire Missouri [Member]
Balance		0.0	0.0
Other Comprehensive Income (Loss), Net of Tax		0.0	0.0
Balance		0.0	0.0		0.0
AOCI Attributable to Parent [Member]
Balance	[1]	3.6	(41.2)		(31.3)
Other Comprehensive Income (Loss), Net of Tax		43.6	44.8	[1]	(9.9)
Balance	[1]	47.2	3.6		(41.2)
AOCI Attributable to Parent [Member] | Spire Missouri [Member]
Balance		(4.2)	(2.9)		(2.4)
Other Comprehensive Income (Loss), Net of Tax		1.5	(1.3)		(0.5)
Balance		$ (2.7)	$ (4.2)		$ (2.9)

[1] Accumulated other comprehensive income (loss)

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Note 6 - Long-term Debt (Details Textual) - USD ($) $ in Millions		12 Months Ended
	Dec. 07, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Oct. 13, 2022
Long-Term Debt, Gross		$ 3,258.9	$ 3,014.6
Interest Paid, Capitalized, Investing Activities		4.5	4.4	$ 5.8
Subsidiaries [Member]
Long-Term Debt, Gross		205.9
Spire Missouri [Member]
Long-Term Debt, Gross		1,648.0	1,348.0
Interest Paid, Capitalized, Investing Activities		0.6	0.2	0.8
Regulatory Preferred Stock and Debt Securities Issuance Amount Authorized		800.0
Spire Missouri [Member] | First Mortgage Bonds Due December Two Two Thousand Twenty Four [Member]
Long-Term Debt, Gross	$ 300.0
Debt Instrument, Interest Rate, Stated Percentage	8.00%
Spire Missouri [Member] | First Mortgage Bonds Due December Two Two Thousand Twenty Four [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Spire Missouri [Member] | Floating Rate Series Due December 2, 2024 [Member]
Long-Term Debt, Gross		300.0
Spire Alabama Inc [Member]
Long-Term Debt, Gross		575.0	625.0
Interest Paid, Capitalized, Investing Activities		$ 3.2	$ 3.2	$ 1.9
Spire Alabama Inc [Member] | Notes Due October 15, 2029 [Member] | Subsequent Event [Member]
Long-Term Debt, Gross					$ 90.0
Debt Instrument, Interest Rate, Stated Percentage					5.32%
Spire Alabama Inc [Member] | Notes Due October 15, 2032 [Member] | Subsequent Event [Member]
Long-Term Debt, Gross					$ 85.0
Debt Instrument, Interest Rate, Stated Percentage					5.41%
Spire Gulf [Member] | First Mortgage Bonds Due October 15, 2037 [Member] | Subsequent Event [Member]
Long-Term Debt, Gross					$ 30.0
Debt Instrument, Interest Rate, Stated Percentage					5.61%

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Note 6 - Long-term Debt - Composition of Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Total principal of long-term debt	$ 3,258.9	$ 3,014.6
Less: Unamortized discounts and debt issuance costs	(19.2)	(19.7)
Less: Current portion	(281.2)	(55.8)
Long-term debt (less current portion)	2,958.5	2,939.1
Spire Missouri [Member]
Total principal of long-term debt	1,648.0	1,348.0
Less: Unamortized discounts and debt issuance costs	(10.3)	(9.6)
Less: Current portion	(250.0)	0.0
Long-term debt (less current portion)	1,387.7	1,338.4
Spire Alabama Inc [Member]
Total principal of long-term debt	575.0	625.0
Less: Unamortized discounts and debt issuance costs	(3.5)	(3.8)
Less: Current portion	0.0	(50.0)
Long-term debt (less current portion)	571.5	571.2
First Mortgage Bonds Three Percentage Series Due March152023 [Member] | Spire Missouri [Member]
Total principal of long-term debt	250.0	250.0
Floating Rate Series Due December 2, 2024 [Member] | Spire Missouri [Member]
Total principal of long-term debt	300.0
First Mortgage Bonds Three Point Four Percentage Series Due August152023 [Member] | Spire Missouri [Member]
Total principal of long-term debt	45.0	45.0
First Mortgage Bonds Three Point Four Percentage Series Due March152028 [Member] | Spire Missouri [Member]
Total principal of long-term debt	19.3	19.3
First Mortgage Bonds Seven Percentage Series Due June12029 [Member] | Spire Missouri [Member]
Total principal of long-term debt	275.0	275.0
First Mortgage Bonds Two Point Eight Four Percentage Series Due November152029 [Member] | Spire Missouri [Member]
Total principal of long-term debt	30.0	30.0
First Mortgage Bonds Seven Point Nine Percentage Series Due September152030 [Member] | Spire Missouri [Member]
Total principal of long-term debt	50.0	50.0
First Mortgage Bonds Three Point Six Eight Percentage Series Due September152032 [Member] | Spire Missouri [Member]
Total principal of long-term debt	99.3	99.3
First Mortgage Bonds Six Percentage Series Due May12034 [Member] | Spire Missouri [Member]
Total principal of long-term debt	54.5	54.5
First Mortgage Bonds Six Point One Five Percentage Series Due June12036 [Member] | Spire Missouri [Member]
Total principal of long-term debt	99.9	99.9
First Mortgage Bonds Four Point Six Three Percentage Series Due August152043 [Member] | Spire Missouri [Member]
Total principal of long-term debt	70.0	70.0
First Mortgage Bonds Four Point Two Three Percentage Series Due September152047 [Member] | Spire Missouri [Member]
Total principal of long-term debt	305.0	305.0
First Mortgage Bonds Three Point Three Zero Percentage Series Due June12051 [Member] | Spire Missouri [Member]
Total principal of long-term debt	50.0	50.0
Three Point Eight Six Percentage Notes Due December222021 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	0.0	50.0
Three Point Two One Percentage Notes Due September152025 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	35.0	35.0
Two Point Eight Eight Percentage Notes Due December12029 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	100.0	100.0
Two Point Zero Four Percentage Notes Due December152030 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	150.0	150.0
Five Point Nine Zero Percentage Notes Due January152037 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	45.0	45.0
Four Point Three One Percentage Notes Due December12045 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	80.0	80.0
Three Point Nine Two Percentage Notes Due January152048 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	45.0	45.0
Four Point Six Four Percentage Notes Due January152049 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	90.0	90.0
Four Point Zero Two Percentage Notes Due January152058 [Member] | Spire Alabama Inc [Member]
Total principal of long-term debt	30.0	30.0
Parent Company [Member] | Three Point Three One Percent Notes Payable Due December152022 [Member]
Total principal of long-term debt	25.0	25.0
Parent Company [Member] | Three Point Five Four Percent Senior Notes Due February272024 [Member]
Total principal of long-term debt	150.0	150.0
Parent Company [Member] | Zero Point Seven Five Percent Remarketable Senior Notes Due March12026 [Member]
Total principal of long-term debt	175.0	175.0
Parent Company [Member] | Two Point Five Two Percent Senior Notes Due September 1 2021 [Member]
Total principal of long-term debt	130.0	130.0
Parent Company [Member] | Three Point One Three Percent Senior Notes Due September12026 [Member]
Total principal of long-term debt	100.0	100.0
Parent Company [Member] | Three Point Nine Three Percent Senior Notes Due March152027 [Member]
Total principal of long-term debt	250.0	250.0
Subsidiaries [Member]
Total principal of long-term debt	205.9
Subsidiaries [Member] | Four Point One Four Percent First Mortgage Bonds Due September302021 [Member]
Total principal of long-term debt	42.0	42.0
Subsidiaries [Member] | Two Nine Five Percent Notes With Annual Principal Payments Through December2034 [Member]
Total principal of long-term debt	123.9	129.6
Subsidiaries [Member] | Five Percent First Mortgage Bonds Due September302031 [Member]
Total principal of long-term debt	$ 40.0	$ 40.0

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Note 6 - Long-term Debt - Composition of Long-term Debt (Details) (Parentheticals)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
First Mortgage Bonds Three Percentage Series Due March152023 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	3.40%	3.40%
Debt Instrument Maturity Date	Aug. 15, 2023	Aug. 15, 2023
Floating Rate Series Due December 2, 2024 [Member] | Spire Missouri [Member]
Debt Instrument Maturity Date	Dec. 02, 2024
First Mortgage Bonds Three Point Four Percentage Series Due August152023 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	3.40%	3.40%
Debt Instrument Maturity Date	Mar. 15, 2028	Mar. 15, 2028
First Mortgage Bonds Three Point Four Percentage Series Due March152028 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	7.00%	7.00%
Debt Instrument Maturity Date	Jun. 01, 2029	Jun. 01, 2029
First Mortgage Bonds Seven Percentage Series Due June12029 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	2.84%	2.84%
Debt Instrument Maturity Date	Nov. 15, 2029	Nov. 15, 2029
First Mortgage Bonds Two Point Eight Four Percentage Series Due November152029 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	7.90%	7.90%
Debt Instrument Maturity Date	Sep. 15, 2030	Sep. 15, 2030
First Mortgage Bonds Seven Point Nine Percentage Series Due September152030 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	3.68%	3.68%
Debt Instrument Maturity Date	Sep. 15, 2032	Sep. 15, 2032
First Mortgage Bonds Three Point Six Eight Percentage Series Due September152032 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	6.00%	6.00%
Debt Instrument Maturity Date	May 01, 2034	May 01, 2034
First Mortgage Bonds Six Percentage Series Due May12034 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	6.15%	6.15%
Debt Instrument Maturity Date	Jun. 01, 2036	Jun. 01, 2036
First Mortgage Bonds Six Point One Five Percentage Series Due June12036 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	4.63%	4.63%
Debt Instrument Maturity Date	Aug. 15, 2043	Aug. 15, 2043
First Mortgage Bonds Four Point Six Three Percentage Series Due August152043 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	4.23%	4.23%
Debt Instrument Maturity Date	Sep. 15, 2047	Sep. 15, 2047
First Mortgage Bonds Four Point Two Three Percentage Series Due September152047 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	3.30%	3.30%
Debt Instrument Maturity Date	Jun. 01, 2051	Jun. 01, 2051
First Mortgage Bonds Three Point Three Zero Percentage Series Due June12051 [Member] | Spire Missouri [Member]
Debt Instrument Interest Rate	4.38%	4.38%
Debt Instrument Maturity Date	Sep. 15, 2057	Sep. 15, 2057
Three Point Eight Six Percentage Notes Due December222021 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	3.86%	3.86%
Debt Instrument Maturity Date	Dec. 22, 2021	Dec. 22, 2021
Three Point Two One Percentage Notes Due September152025 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	3.21%	3.21%
Debt Instrument Maturity Date	Sep. 15, 2025	Sep. 15, 2025
Two Point Eight Eight Percentage Notes Due December12029 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	2.88%	2.88%
Debt Instrument Maturity Date	Dec. 01, 2029	Dec. 01, 2029
Two Point Zero Four Percentage Notes Due December152030 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	2.04%	2.04%
Debt Instrument Maturity Date	Dec. 15, 2030	Dec. 15, 2030
Five Point Nine Zero Percentage Notes Due January152037 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	5.90%	5.90%
Debt Instrument Maturity Date	Jan. 15, 2037	Jan. 15, 2037
Four Point Three One Percentage Notes Due December12045 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	4.31%	4.31%
Debt Instrument Maturity Date	Dec. 01, 2045	Dec. 01, 2045
Three Point Nine Two Percentage Notes Due January152048 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	3.92%	3.92%
Debt Instrument Maturity Date	Jan. 15, 2048	Jan. 15, 2048
Four Point Six Four Percentage Notes Due January152049 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	4.64%	4.64%
Debt Instrument Maturity Date	Jan. 15, 2049	Jan. 15, 2049
Four Point Zero Two Percentage Notes Due January152058 [Member] | Spire Alabama Inc [Member]
Debt Instrument Interest Rate	4.02%	4.02%
Debt Instrument Maturity Date	Jan. 15, 2058	Jan. 15, 2058
Parent Company [Member] | Three Point Three One Percent Notes Payable Due December152022 [Member]
Debt Instrument Interest Rate	3.31%	3.31%
Debt Instrument Maturity Date	Dec. 15, 2022	Dec. 15, 2022
Parent Company [Member] | Three Point Five Four Percent Senior Notes Due February272024 [Member]
Debt Instrument Interest Rate	3.54%	3.54%
Debt Instrument Maturity Date	Feb. 27, 2024	Feb. 27, 2024
Parent Company [Member] | Zero Point Seven Five Percent Remarketable Senior Notes Due March12026 [Member]
Debt Instrument Interest Rate	0.75%	0.75%
Debt Instrument Maturity Date	Mar. 01, 2026	Mar. 01, 2026
Parent Company [Member] | Two Point Five Two Percent Senior Notes Due September 1 2021 [Member]
Debt Instrument Interest Rate	3.13%	3.13%
Debt Instrument Maturity Date	Sep. 01, 2026	Sep. 01, 2026
Parent Company [Member] | Three Point One Three Percent Senior Notes Due September12026 [Member]
Debt Instrument Interest Rate	3.93%	3.93%
Debt Instrument Maturity Date	Mar. 15, 2027	Mar. 15, 2027
Parent Company [Member] | Three Point Nine Three Percent Senior Notes Due March152027 [Member]
Debt Instrument Interest Rate	4.70%	4.70%
Debt Instrument Maturity Date	Aug. 15, 2044	Aug. 15, 2044
Subsidiaries [Member] | Four Point One Four Percent First Mortgage Bonds Due September302021 [Member]
Debt Instrument Interest Rate	5.00%	5.00%
Debt Instrument Maturity Date	Sep. 30, 2031	Sep. 30, 2031
Subsidiaries [Member] | Two Nine Five Percent Notes With Annual Principal Payments Through December2034 [Member]
Debt Instrument Interest Rate	2.95%	2.95%
Debt Instrument Maturity Date	Dec. 31, 2034	Dec. 31, 2034
Subsidiaries [Member] | Five Percent First Mortgage Bonds Due September302031 [Member]
Debt Instrument Interest Rate	3.52%	3.52%
Debt Instrument Maturity Date	Sep. 30, 2049	Sep. 30, 2049

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Note 6 - Long-term Debt - Maturities of Long-term Debt (Details) $ in Millions	Sep. 30, 2022 USD ($)
2023	$ 281.2
2024	156.6
2025	342.0
2026	312.5
2027	108.1
Spire Missouri [Member]
2023	250.0
2024	0.0
2025	300.0
2026	0.0
2027	0.0
Spire Alabama Inc [Member]
2023	0.0
2024	0.0
2025	35.0
2026	0.0
2027	$ 0.0

XML

Note 7 - Notes Payable and Credit Agreements (Details Textual) - USD ($) $ in Thousands	1 Months Ended
	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Parent Company [Member]
Short Term Borrowings Used to Support Lending to Utilities		$ 777,800
Spire Missouri [Member] | Unsecured Term Loan [Member]
Debt Instrument, Face Amount	$ 250,000
Debt Instrument, Term (Day)	364 days
Spire Missouri [Member] | Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	0.65%
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,300,000
Line of Credit Facility, Covenant, Percentage of Total Capitalization		60.00%
Long-Term Line of Credit, Total		$ 0	$ 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 7 - Notes Payable and Credit Agreements - Short-term Borrowings (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Term Loan [Member] | Spire Missouri [Member]
Highest borrowings outstanding	$ 456.6
Lowest borrowings outstanding	43.2
Weighted average borrowings	$ 244.9
Weighted average interest rate	0.40%
Borrowings outstanding	$ 445.3	$ 240.9
Weighted average interest rate	3.30%
Spire Note [Member] | Spire Missouri [Member]
Highest borrowings outstanding	$ 265.2
Lowest borrowings outstanding	38.4
Weighted average borrowings	$ 152.6
Weighted average interest rate	0.50%
Borrowings outstanding	$ 260.9	$ 49.0
Weighted average interest rate	3.30%	0.20%
Spire Note [Member] | Spire Alabama Inc [Member]
Highest borrowings outstanding	$ 1,079.0
Lowest borrowings outstanding	462.5
Weighted average borrowings	$ 749.2
Weighted average interest rate	1.10%
Borrowings outstanding	$ 1,037.5	$ 672.0
Weighted average interest rate	3.30%	0.40%
Parent Company [Member] | Term Loan [Member]
Highest borrowings outstanding	$ 250.0
Lowest borrowings outstanding	0.0
Weighted average borrowings	$ 113.0
Weighted average interest rate	0.80%
Borrowings outstanding	$ 0.0	$ 250.0
Weighted average interest rate		0.70%
Parent Company [Member] | Commercial Paper [Member]
Highest borrowings outstanding	1,079.0
Lowest borrowings outstanding	408.0
Weighted average borrowings	$ 636.2
Weighted average interest rate	1.20%
Borrowings outstanding	$ 1,037.5	$ 422.0
Weighted average interest rate	3.30%	0.20%

XML

Note 8 - Fair Value of Financial Instruments - Estimated Fair Value of Financial Instruments Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Spire Alabama Inc [Member]
Cash and cash equivalents	$ 2.4
Notes payable - associated companies	260.9
Reported Value Measurement [Member]
Cash and cash equivalents	6.5	$ 4.3
Notes payable	1,037.5	672.0
Long-term debt, including current portion	3,239.7	2,994.9
Reported Value Measurement [Member] | Spire Missouri [Member]
Notes payable	250.0
Long-term debt, including current portion	1,338.4	571.5
Notes payable - associated companies	445.3	240.9
Reported Value Measurement [Member] | Spire Alabama Inc [Member]
Long-term debt, including current portion	1,637.7	621.2
Notes payable - associated companies		49.0
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	6.5	4.3
Notes payable	1,037.5	672.0
Long-term debt, including current portion	2,851.8	3,375.9
Estimate of Fair Value Measurement [Member] | Spire Missouri [Member]
Notes payable	250.0
Long-term debt, including current portion	1,540.4	485.0
Notes payable - associated companies	445.3	240.9
Estimate of Fair Value Measurement [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	2.4
Long-term debt, including current portion	1,473.9	707.5
Notes payable - associated companies	260.9	49.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	6.5	4.3
Notes payable	0.0	0.0
Long-term debt, including current portion	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Notes payable	0.0
Long-term debt, including current portion	0.0	0.0
Notes payable - associated companies	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	2.4
Long-term debt, including current portion	0.0	0.0
Notes payable - associated companies	0.0	0.0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0.0	0.0
Notes payable	1,037.5	672.0
Long-term debt, including current portion	2,851.8	3,375.9
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Notes payable	250.0
Long-term debt, including current portion	1,540.4	485.0
Notes payable - associated companies	445.3	240.9
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Cash and cash equivalents	0.0
Long-term debt, including current portion	1,473.9	707.5
Notes payable - associated companies	$ 260.9	$ 49.0

XML

Note 9 - Fair Value Measurements (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Spire Alabama Inc [Member] | Gasoline Derivative Program [Member]
Derivative Assets (Liabilities), at Fair Value, Net, Total	$ 0	$ 0

XML

Note 9 - Fair Value Measurements - Schedule of Derivative Assets and Liabilities, Including Receivables and Payables (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Derivative Assets	$ 116.2	$ 58.1
Derivative Liabilities	61.5	91.7
Fair Value, Recurring [Member]
Effects of netting, asset	(153.6)	(208.4)
Derivative Assets	164.6	108.1
Effects of netting, liability	(117.0)	(73.0)
Derivative Liabilities	61.5	91.7
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	318.2	166.6
Derivative Liability Fair Value Gross Liability	178.5	6.0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset	0.0	149.9
Derivative Liability Fair Value Gross Liability	0.0	158.7
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Gas Utility [Member]
Effects of netting, asset	0.0	0.0
Derivative Assets	19.1	23.8
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Other Segments [Member]
Effects of netting, asset	0.0	0.0
Derivative Assets	29.3	26.2
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	19.1	23.8
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	29.3	26.2
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Gas Utility [Member]
Effects of netting, asset	(57.8)	(104.0)
Derivative Assets	0.0	0.0
Effects of netting, liability	(30.7)	(0.3)
Derivative Liabilities	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Gas Marketing [Member]
Effects of netting, asset	(91.8)	(93.7)
Derivative Assets	0.0	21.0
Effects of netting, liability	(82.3)	(62.0)
Derivative Liabilities	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	57.8	104.0
Derivative Liability Fair Value Gross Liability	30.7	0.3
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	91.8	0.0
Derivative Liability Fair Value Gross Liability	82.3	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [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
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	0.0	114.7
Derivative Liability Fair Value Gross Liability	0.0	62.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Utility [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0
N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0
Natural Gas Commodity Contracts [Member] | Fair Value, Recurring [Member] | Gas Marketing [Member]
Effects of netting, asset	(4.0)	(5.5)
Derivative Assets	52.6	29.7
Effects of netting, liability	(4.0)	(5.5)
Derivative Liabilities	61.5	91.2
Natural Gas Commodity Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	56.6	0.0
Derivative Liability Fair Value Gross Liability	65.5	0.0
Natural Gas Commodity Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Gas Marketing [Member]
Derivative Asset Fair Value Gross Asset	0.0	35.2
Derivative Liability Fair Value Gross Liability	0.0	96.7
Natural Gas Commodity Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Gas Marketing [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, Recurring [Member] | Other Segments [Member]
Effects of netting, asset	0.0
Derivative Assets	63.6
Effects of netting, liability	(5.2)	(5.2)
Derivative Liabilities	7.4	0.5
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	63.6
Derivative Liability Fair Value Gross Liability	12.6	5.7
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0
Interest Rate Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Segments [Member]
Derivative Asset Fair Value Gross Asset	0.0
Derivative Liability Fair Value Gross Liability	0.0	0.0
Spire Missouri [Member]
Derivative Assets	0.0	0.0
Derivative Liabilities	0.0	0.0
Spire Missouri [Member] | Fair Value, Recurring [Member]
Effects of netting, asset	(57.8)	(104.0)
Derivative Assets	19.1	23.8
Spire Missouri [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	76.9	127.8
Spire Missouri [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Spire Missouri [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Spire Missouri [Member] | U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member]
Effects of netting, asset	0.0	0.0
Derivative Assets	19.1	23.8
Spire Missouri [Member] | U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	19.1	23.8
Spire Missouri [Member] | U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Spire Missouri [Member] | U S Stock And Bond Mutual Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Spire Missouri [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member]
Effects of netting, asset	(57.8)	(104.0)
Derivative Assets	0.0	0.0
Effects of netting, liability	(30.7)	(0.3)
Derivative Liabilities	0.0	0.0
Spire Missouri [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative Asset Fair Value Gross Asset	57.8	104.0
Derivative Liability Fair Value Gross Liability	30.7	0.3
Spire Missouri [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [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
Spire Missouri [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Asset Fair Value Gross Asset	0.0	0.0
Derivative Liability Fair Value Gross Liability	$ 0.0	$ 0.0

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Note 10 - Derivative Instruments and Hedging Activities (Details Textual) MMBTU in Millions, $ in Millions	3 Months Ended					12 Months Ended
	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2022 USD ($) MMBTU
Nonmonetary Notional Amount of Natural Gas Derivative Contracts Not Designated As Normal Purchases Or Normal Sales (Millions of British Thermal Unit) | MMBTU						492.2
Notional Amount of Non Exchange Traded Natural Gas Commodity Contracts To Be Settled In Next Twelve Months (Millions of British Thermal Unit) | MMBTU						347.8
Notional Amount of Non Exchange Traded Natural Gas Commodity Contracts To Be Settled In Year Two (Millions of British Thermal Unit) | MMBTU						88.8
Notional Amount of Non Exchange Traded Natural Gas Commodity Contracts To Be Settled In Year Three (Millions of British Thermal Unit) | MMBTU						47.5
Notional Amount of Non Exchange Traded Natural Gas Commodity Contracts To Be Settled In Year Four (Millions of British Thermal Unit) | MMBTU						7.0
Notional Amount of Non Exchange Traded Natural Gas Commodity Contracts To Be Settled In Year Five (Millions of British Thermal Unit) | MMBTU						1.1
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax						$ 63.6
Other Receivable from Broker-Dealer and Clearing Organization			$ 40.8			$ 49.8
Spire Missouri [Member]
Nonmonetary Notional Amount of Other Price Mitigation in Place Not Designated As Normal Purchases Or Normal Sales (Millions of British Thermal Unit) | MMBTU						23.4
Other Receivable from Broker-Dealer and Clearing Organization			$ 40.3			$ 24.0
Interest Rate Swap Agreement Two [Member]
Derivative, Term of Contract (Year)					10 years
Interest Rate Swap Agreement Four [Member]
Derivative, Notional Amount					$ 75.0
Derivative, Gain (Loss) on Derivative, Net, Total						9.8
Interest Rate Swap Agreement Four [Member] | Minimum [Member]
Derivative, Fixed Interest Rate					0.934%
Interest Rate Swap Agreement Four [Member] | Maximum [Member]
Derivative, Fixed Interest Rate					1.2975%
Interest Rate Swap Agreement Five [Member]
Derivative, Term of Contract (Year)				10 years
Derivative, Notional Amount				$ 150.0
Derivative, Gain (Loss) on Derivative, Net, Total						17.9
Interest Rate Swap Agreement Five [Member] | Minimum [Member]
Derivative, Fixed Interest Rate				2.008%
Interest Rate Swap Agreement Five [Member] | Maximum [Member]
Derivative, Fixed Interest Rate				2.1075%
Interest Rate Swap Agreement Six [Member]
Derivative, Term of Contract (Year)			10 years
Derivative, Fixed Interest Rate			1.597%
Derivative, Notional Amount			$ 50.0
Interest Rate Swap Agreement Seven [Member]
Derivative, Fixed Interest Rate			1.821%
Derivative, Notional Amount			$ 50.0
Derivative, Gain (Loss) on Derivative, Net, Total						5.7
Interest Rate Swap Agreement Eight [Member]
Derivative, Term of Contract (Year)		10 years
Derivative, Fixed Interest Rate		1.4918%
Derivative, Notional Amount		$ 50.0
Derivative, Gain (Loss) on Derivative, Net, Total						7.0
Interest Rate Swap Agreement Nine [Member]
Derivative, Term of Contract (Year)	10 years
Derivative, Notional Amount	$ 150.0
Derivative, Gain (Loss) on Derivative, Net, Total						$ 16.2
Interest Rate Swap Agreement Nine [Member] | Minimum [Member]
Derivative, Fixed Interest Rate	1.6475%
Interest Rate Swap Agreement Nine [Member] | Maximum [Member]
Derivative, Fixed Interest Rate	1.746%

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Note 10 - Derivative Instruments and Hedging Activities - Summary of NYMEX and ICE Natural Gas Futures and Swap Positions (Details) - MMBTU MMBTU in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Natural Gas Futures Purchased [Member] | Gas Marketing [Member]
Notional Amount, Energy Measure (Millions of British Thermal Unit)	76.3	103.3
Term Of Contract (Month)	54 months	51 months
Natural Gas Futures Purchased [Member] | Gas Utility [Member]
Notional Amount, Energy Measure (Millions of British Thermal Unit)	13.0	52.8
Term Of Contract (Month)	12 months	12 months
Natural Gas Futures Purchased [Member] | Spire Missouri [Member]
Notional Amount, Energy Measure (Millions of British Thermal Unit)	13.0	52.8
Term Of Contract (Month)	12 months	12 months
Natural Gas Options Purchased Net [Member] | Gas Marketing [Member]
Notional Amount, Energy Measure (Millions of British Thermal Unit)	3.7	7.1
Term Of Contract (Month)	12 months	15 months
Natural Gas Basis Swaps Purchased [Member] | Gas Marketing [Member]
Notional Amount, Energy Measure (Millions of British Thermal Unit)	61.7	101.7
Term Of Contract (Month)	39 months	27 months

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Note 10 - Derivative Instruments and Hedging Activities - Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Net hedging gain (loss) arising during the period		$ 56.7	$ 61.2	$ (8.9)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Other Comprehensive Income (Loss) [Member]
Net hedging gain (loss) arising during the period		95.9	(23.4)	(2.6)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Other Comprehensive Income (Loss) [Member]
Net hedging gain (loss) arising during the period		56.7	61.2	(8.9)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Effective portion of (loss) gain reclassified from AOCI to income:		(1.2)	(1.3)	(3.2)
Not Designated as Hedging Instrument [Member] | Natural Gas Commodity Contracts [Member] | Non Regulated Gas Marketing Operating Revenue [Member]
Derivatives Not Designated as Hedging Instrument	[1]	52.6	54.1	9.2
Not Designated as Hedging Instrument [Member] | N Y M E X And I C E Natural Gas Contracts [Member] | Non Regulated Gas Marketing Operating Revenue [Member]
Derivatives Not Designated as Hedging Instrument	[1]	$ 43.3	$ (77.5)	$ (11.8)

[1] Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Missouri Utilities’ PGA clauses and initially recorded as regulatory assets or regulatory liabilities. These gains and losses are excluded from the table above because they have no direct impact on the statements of income. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

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Note 10 - Derivative Instruments and Hedging Activities - Fair Value of Derivative Instruments in the Consolidated Balance Sheets (Details) - USD ($) $ in Millions		Sep. 30, 2022	Sep. 30, 2021
Fair value of derivative assets presented above		$ 269.8	$ 266.5
Fair Value Of Derivative Liability	[1]	178.5	164.7
Spire Missouri [Member]
Fair value of derivative assets presented above		57.8	104.0
Fair Value Of Derivative Liability		30.7	0.3
Designated as Hedging Instrument [Member]
Fair value of derivative assets presented above		63.6	12.6
Fair Value Of Derivative Liability	[1]	0.0	5.7
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Derivative Instruments Assets [Member] | Corporate, Non-Segment [Member]
Fair value of derivative assets presented above		63.6
Fair Value Of Derivative Liability	[1]	0.0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Derivative Instruments Liability [Member] | Corporate, Non-Segment [Member]
Fair value of derivative assets presented above			12.6
Fair Value Of Derivative Liability	[1]		5.7
Not Designated as Hedging Instrument [Member]
Fair value of derivative assets presented above		206.2	253.9
Fair Value Of Derivative Liability	[1]	178.5	159.0
Not Designated as Hedging Instrument [Member] | N Y M E X Natural Gas Contracts [Member] | Accounts Receivable Other [Member] | Gas Utility [Member] | Spire Missouri [Member]
Fair value of derivative assets presented above		57.8	104.0
Fair Value Of Derivative Liability	[2]	30.7	0.3
Not Designated as Hedging Instrument [Member] | N Y M E X Natural Gas Contracts [Member] | Accounts Receivable Other [Member] | Operating Segments [Member] | Gas Utility [Member]
Fair value of derivative assets presented above		57.8	104.0
Fair Value Of Derivative Liability	[1]	30.7	0.3
Not Designated as Hedging Instrument [Member] | N Y M E X And I C E Natural Gas Contracts [Member] | Derivative Instruments Liability [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above		79.2
Fair Value Of Derivative Liability	[1]	71.5
Not Designated as Hedging Instrument [Member] | N Y M E X And I C E Natural Gas Contracts [Member] | Other Deferred Charges [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above		12.7
Fair Value Of Derivative Liability	[1]	10.8
Not Designated as Hedging Instrument [Member] | Natural Gas Commodity Contracts [Member] | Derivative Instruments Assets [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above		53.4	34.1
Fair Value Of Derivative Liability	[1]		82.5
Not Designated as Hedging Instrument [Member] | Natural Gas Commodity Contracts [Member] | Other Deferred Charges [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above		3.1	1.1
Fair Value Of Derivative Liability	[1]		14.2
Not Designated as Hedging Instrument [Member] | Natural Gas Commodity Contracts [Member] | Other Current Liabilities [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair Value Of Derivative Liability	[1]	55.1
Not Designated as Hedging Instrument [Member] | Natural Gas Commodity Contracts [Member] | Deferred Credits And Other Liabilities [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair Value Of Derivative Liability	[1]	$ 10.4
Not Designated as Hedging Instrument [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Derivative Instruments Assets [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above			93.9
Fair Value Of Derivative Liability	[1]		50.1
Not Designated as Hedging Instrument [Member] | N Y M E X I C E Natural Gas Contracts [Member] | Other Deferred Charges [Member] | Operating Segments [Member] | Gas Marketing [Member]
Fair value of derivative assets presented above			20.8
Fair Value Of Derivative Liability	[1]		$ 11.9

[1] The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of the Company’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

[2] The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the Balance Sheets. As such, the gross balances presented in the table above are not indicative of Spire Missouri’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

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Note 10 - Derivative Instruments and Hedging Activities - Reconciliation of Amounts in the Consolidated Balance Sheet (Details) - USD ($) $ in Millions		Sep. 30, 2022	Sep. 30, 2021
Fair value of derivative assets presented above		$ 269.8	$ 266.5
Fair value of cash margin receivable offset with derivatives		(36.6)	(135.4)
Netting of assets and liabilities with the same counterparty		(117.0)	(73.0)
Total		116.2	58.1
Derivative Assets		116.2	58.1
Fair value of derivative liabilities presented above	[1]	178.5	164.7
Netting of assets and liabilities with the same counterparty		(117.0)	(73.0)
Total		61.5	91.7
Derivative Liabilities		61.5	91.7
Other Current Assets [Member]
Total		113.1	57.0
Derivative Assets		113.1	57.0
Deferred Charges and Other Assets, Other [Member]
Total		3.1	1.1
Derivative Assets		3.1	1.1
Other Current Liabilities [Member]
Total		51.1	77.5
Derivative Liabilities		51.1	77.5
Deferred Credits And Other Liabilities [Member]
Total		10.4	14.2
Derivative Liabilities		10.4	14.2
Spire Missouri [Member]
Fair value of derivative assets presented above		57.8	104.0
Netting of assets and liabilities with the same counterparty		(30.7)	(0.3)
Total		0.0	0.0
Derivative Assets		0.0	0.0
Fair value of derivative liabilities presented above		30.7	0.3
Netting of assets and liabilities with the same counterparty		(30.7)	(0.3)
Total		0.0	0.0
Derivative Liabilities		0.0	0.0
Fair value of cash margin (payable) receivable offset with derivatives		$ (27.1)	$ (103.7)

[1] The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of the Company’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

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Note 11 - Concentrations of Credit Risk (Details Textual) Pure in Millions, $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($)
Customer Concentration Risk [Member] | Utility Companies and Their Marketing Affiliates [Member]
Accounts Receivable, after Allowance for Credit Loss, Total	$ 245.6
Customer Concentration Risk [Member] | Five Largest Counterparties [Member]
Accounts Receivable, after Allowance for Credit Loss, Total	$ 111.2
Gas Utility [Member]
Number of Customer Serves	1.7

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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 4,000	$ 3,600
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0	0
Spire Missouri [Member]
Regulatory Order, Excess Deferred Income Tax Returned to Customers	9,900	8,400
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,700	3,300
Unrecognized Tax Benefits, Ending Balance	19,300	16,100	$ 13,000	$ 10,400
Spire Alabama Inc [Member]
Unrecognized Tax Benefits, Ending Balance	$ 0	$ 0	$ 0

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Note 12 - Income Taxes - Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Total income tax expense	$ 58.9	$ 68.5	$ 12.4
Spire Missouri [Member]
Current	0.0	0.0	0.0
Deferred	18.2	22.0	14.9
Investment tax credits	(0.2)	(0.2)	(0.2)
Current	0.0	0.0	0.1
Deferred	3.3	3.5	2.5
Total income tax expense	21.3	25.3	17.3
Spire Alabama Inc [Member]
Current	0.0	0.0	0.0
Deferred	18.1	19.8	17.4
Investment tax credits	0.0	0.0	0.0
Current	0.0	0.0	0.0
Deferred	5.1	5.2	4.6
Total income tax expense	23.2	25.0	22.0
Parent Company [Member]
Current	0.5	0.2	0.4
Deferred	47.0	49.5	5.8
Investment tax credits	(0.2)	(0.2)	(0.2)
Current	0.5	1.3	3.0
Deferred	11.1	17.7	3.4
Total income tax expense	$ 58.9	$ 68.5	$ 12.4

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Note 12 - Income Taxes - Effective Income Tax Rate (Details)		12 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Spire Missouri [Member]
Federal income tax statutory rate		21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax benefits		2.60%	2.60%	2.60%
Certain expenses capitalized on books and deducted on tax return		(3.20%)	(3.30%)	(4.60%)
Taxes related to prior years		(0.60%)	(0.20%)	(1.40%)
Amortization of excess deferred taxes		(7.30%)	(5.00%)	(5.70%)
Other items – net *	[1]	3.10%	(0.20%)	(0.20%)
Effective income tax rate		15.60%	14.90%	11.70%
Spire Alabama Inc [Member]
Federal income tax statutory rate		21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax benefits		4.10%	4.10%	4.10%
Certain expenses capitalized on books and deducted on tax return		0.00%	0.00%	0.00%
Taxes related to prior years		0.00%	0.00%	0.10%
Amortization of excess deferred taxes		0.00%	0.00%	0.00%
Other items – net *	[1]	0.20%	0.20%	(0.10%)
Effective income tax rate		25.30%	25.30%	25.10%
Parent Company [Member]
Federal income tax statutory rate		21.00%	21.00%	21.00%
State and local income taxes, net of federal income tax benefits		3.60%	3.60%	9.00%
Certain expenses capitalized on books and deducted on tax return		(1.60%)	(1.60%)	(6.60%)
Taxes related to prior years		(0.30%)	(0.50%)	(1.80%)
Amortization of excess deferred taxes		(3.50%)	(2.50%)	(8.30%)
Other items – net *	[1]	1.90%	0.10%	(1.00%)
Effective income tax rate		21.10%	20.10%	12.30%

[1] Other consists primarily of property adjustments.

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Note 12 - Income Taxes - Significant Items Comprising the Net Deferred Tax Liability or Asset (Details) - USD ($) $ in Millions		Sep. 30, 2022	Sep. 30, 2021
Reserves not currently deductible		$ 33.5	$ 18.3
Pension and other postretirement benefits		72.6	77.4
Goodwill		0.0	0.0
Operating losses		255.1	264.5
Regulatory amount due to customers, net		34.5	33.2
Other		24.9	32.4
Deferred tax assets		420.6	425.8
Less: Valuation allowance		0.0	(0.5)
Total deferred tax assets		420.6	425.3
Relating to property		(740.0)	(693.9)
Regulatory pension and other postretirement benefits		(92.8)	(95.6)
Deferred gas costs		(75.8)	(81.1)
Other**	[1]	(187.1)	(167.0)
Total deferred tax liabilities		(1,095.7)	(1,037.6)
Net deferred tax (liability) asset		(675.1)	(612.3)
Spire Missouri [Member]
Reserves not currently deductible		4.0	8.5
Pension and other postretirement benefits		52.6	53.4
Goodwill		0.0	0.0
Operating losses		116.9	110.3
Regulatory amount due to customers, net		30.7	29.4
Other		0.0	0.0
Deferred tax assets		204.2	201.6
Less: Valuation allowance		0.0	(0.4)
Total deferred tax assets		204.2	201.2
Relating to property		(489.3)	(464.0)
Regulatory pension and other postretirement benefits		(72.3)	(71.2)
Deferred gas costs		(74.0)	(79.5)
Other**	[1]	(68.7)	(66.5)
Total deferred tax liabilities		(704.3)	(681.2)
Net deferred tax (liability) asset		(500.1)	(480.0)
Spire Alabama Inc [Member]
Reserves not currently deductible		7.4	6.6
Pension and other postretirement benefits		0.0	0.0
Goodwill		73.0	87.2
Operating losses		140.3	130.3
Regulatory amount due to customers, net		0.0	0.0
Other		0.0	0.0
Deferred tax assets		220.7	224.1
Less: Valuation allowance		0.0	0.0
Total deferred tax assets		220.7	224.1
Relating to property		(201.6)	(182.7)
Regulatory pension and other postretirement benefits		(1.6)	(1.6)
Deferred gas costs		0.0	0.0
Other**	[1]	(6.5)	(5.6)
Total deferred tax liabilities		(209.7)	(189.9)
Net deferred tax (liability) asset		$ 11.0	$ 34.2

[1] For Spire, Other consists primarily of goodwill-related liabilities.

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Note 12 - Income Taxes - Summary of Federal and State Loss and Contribution and Tax Credit Carryforwards (Details) $ in Millions	Sep. 30, 2022 USD ($)
Federal and state loss carryforwards	$ 1,047.7
Contribution carryforwards	10.4
Tax credit carryforwards	4.6
Spire Missouri [Member]
Federal and state loss carryforwards	462.3
Contribution carryforwards	7.0
Tax credit carryforwards	3.4
Spire Alabama Inc [Member]
Federal and state loss carryforwards	556.7
Contribution carryforwards	0.4
Tax credit carryforwards	$ 0.0

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Note 12 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Spire Missouri [Member]
Unrecognized tax benefits, beginning of year	$ 16.1	$ 13.0	$ 10.4
Increases related to tax positions taken in current year	3.2	3.1	2.6
Reductions due to lapse of applicable statute of limitations	0.0	0.0	0.0
Unrecognized tax benefits, end of year	19.3	16.1	13.0
Parent Company [Member]
Unrecognized tax benefits, beginning of year	16.4	13.2	10.7
Increases related to tax positions taken in current year	3.3	3.2	2.6
Reductions due to lapse of applicable statute of limitations	(0.1)	0.0	(0.1)
Unrecognized tax benefits, end of year	$ 19.6	$ 16.4	$ 13.2

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Note 13 - Pension Plans and Other Postretirement Benefits (Details Textual) - USD ($) $ in Thousands			12 Months Ended
	Dec. 23, 2021	Dec. 22, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Apr. 18, 2018
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement				$ 0	$ 0
Regulatory Asset, Total				$ 1,467,800	1,300,000
Implementation Period Used To Calculate Return On Plan Assets (Year)				4 years
Gains Or Losses Includible In Cost Amortized To Extent Exceeds Projected Benefit Obligations or Market Related Value of Plan Assets Percentage				10.00%
Postretirement Benefit Plans, Recovery in Rates Base Allowance							$ 8,600
Defined Contribution Plan, Cost				$ 15,500	15,500	$ 13,600
Minimum [Member]
Defined Benefit Plan, Benefit Obligation, Actuarial Gains From Prior Years, Percent				2.55%
Maximum [Member]
Defined Benefit Plan, Benefit Obligation, Actuarial Gains From Prior Years, Percent				2.80%
Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement				$ 109,300	67,600
Defined Benefit Plan, Plan Assets, Contributions by Employer				52,400	53,400
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer				400	100
Spire Missouri [Member]
Regulatory Asset, Total				835,700	759,400
Defined Benefit Plan, Plan Assets, Contributions by Employer					42,200
Defined Contribution Plan, Cost				$ 10,900	$ 10,900	$ 9,500
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	32,400	29,000
Spire Missouri [Member] | Pension and Other Postretirement Plans Costs [Member] | Missouri West [Member]
Regulatory Assets for Which No Return on Investment During Recovery Period Is Provided	$ 1,100	$ 3,300
Remaining Recovery Period of Regulatory Assets 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	$ 11,000	$ 21,600
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)	8 years	8 years
Spire Missouri [Member] | Pension Plan One [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.70%
Spire Missouri [Member] | Pension Plan Two [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.80%
Spire Missouri [Member] | Pension Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate					3.00%	2.85%
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement				$ 87,000	$ 44,600
Defined Benefit Plan, Plan Assets, Contributions by Employer				37,800
Anticipated Contributions to Pension Plans Qualified Trusts				44,500
Anticipated Contributions To Pension Plans Non Qualified Trusts				1,100
Spire Missouri [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer				$ 0
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.80%	2.95%
Defined Benefit Plan, Plan Assets, Contributions by Employer				$ 400	$ 100
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member] | Forecast [Member]
Anticipated Contributions to Pension Plans Qualified Trusts			$ 0
Spire Alabama Inc [Member]
Regulatory Asset, Total				595,100	502,100
Defined Benefit Plan, Plan Assets, Contributions by Employer					11,100
Defined Contribution Plan, Cost				$ 3,600	$ 2,900	$ 3,400
Spire Alabama Inc [Member] | Pension Plan One [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.70%	3.10%
Spire Alabama Inc [Member] | Pension Plan Two [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.65%	3.00%
Spire Alabama Inc [Member] | Pension Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate					3.10%	2.95%
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement				$ 22,300	$ 22,900
Defined Benefit Plan, Benefit Obligation, Settlement Losses Amortized Over Remaining Actuarial Life (Year)				12 years 3 months 18 days	11 years 8 months 12 days	11 years 4 months 24 days
Defined Benefit Plan, Plan Assets, Contributions by Employer				$ 14,400
Anticipated Contributions to Pension Plans Qualified Trusts				$ 13,800
Spire Alabama Inc [Member] | Pension Plan [Member] | Minimum [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.65%	3.00%
Spire Alabama Inc [Member] | Pension Plan [Member] | Maximum [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.70%	3.10%
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate				5.80%	2.95%
Defined Benefit Plan, Plan Assets, Contributions by Employer				$ 0	$ 0
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member] | Forecast [Member]
Anticipated Contributions to Pension Plans Qualified Trusts			$ 0
Spire Alabama And Spire Missouri [Member] | Pension Plan [Member]
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement				$ 109,300	$ 67,500

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Note 13 - Pension Plans and Other Postretirement Benefits - Net Pension Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Pension Plan [Member]
Service cost – benefits earned during the period	$ 20.0	$ 21.7	$ 22.5
Interest cost on projected benefit obligation	21.5	20.7	22.6
Expected return on plan assets	(31.3)	(31.6)	(35.0)
Amortization of prior service (credit) cost	(4.5)	(3.1)	(2.5)
Amortization of actuarial loss	11.9	14.9	14.4
Loss on lump-sum settlements and curtailments	33.6	18.2	31.6
Subtotal	51.2	40.8	53.6
Regulatory adjustment	12.5	20.6	6.6
Net pension cost	63.7	61.4	60.2
Pension Plan [Member] | Spire Missouri [Member]
Service cost – benefits earned during the period	14.4	15.4	15.7
Interest cost on projected benefit obligation	14.7	14.2	15.8
Expected return on plan assets	(22.7)	(22.5)	(24.6)
Amortization of prior service (credit) cost	(1.9)	(0.6)	0.1
Amortization of actuarial loss	9.6	11.0	11.3
Loss on lump-sum settlements and curtailments	27.3	11.6	26.6
Subtotal	41.4	29.1	44.9
Regulatory adjustment	9.9	19.0	3.9
Net pension cost	51.3	48.1	48.8
Pension Plan [Member] | Spire Alabama Inc [Member]
Service cost – benefits earned during the period	4.8	5.5	6.1
Interest cost on projected benefit obligation	4.7	4.6	4.9
Expected return on plan assets	(5.2)	(5.8)	(6.9)
Amortization of prior service (credit) cost	(2.4)	(2.3)	(2.4)
Amortization of actuarial loss	2.4	3.9	3.1
Loss on lump-sum settlements and curtailments	6.3	6.6	5.0
Subtotal	10.6	12.5	9.8
Regulatory adjustment	1.7	0.7	1.8
Net pension cost	12.3	13.2	11.6
Other Postretirement Benefits Plan [Member]
Service cost – benefits earned during the period	7.5	7.3	5.9
Interest cost on projected benefit obligation	6.0	6.0	6.3
Expected return on plan assets	(16.8)	(16.1)	(16.7)
Amortization of prior service (credit) cost	1.0	1.0	(0.5)
Amortization of actuarial loss	(2.2)	(1.6)	(2.0)
Subtotal	(4.5)	(3.4)	(7.0)
Regulatory adjustment	3.3	13.2	16.0
Net pension cost	(1.2)	9.8	9.0
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Service cost – benefits earned during the period	6.3	6.2	5.3
Interest cost on projected benefit obligation	4.5	4.5	4.7
Expected return on plan assets	(11.3)	(10.9)	(11.4)
Amortization of prior service (credit) cost	0.7	0.7	(0.2)
Amortization of actuarial loss	(1.9)	(1.5)	(2.0)
Subtotal	(1.7)	(1.0)	(3.6)
Regulatory adjustment	5.0	15.0	17.7
Net pension cost	3.3	14.0	14.1
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Service cost – benefits earned during the period	1.1	0.9	0.4
Interest cost on projected benefit obligation	1.4	1.3	1.4
Expected return on plan assets	(5.2)	(4.9)	(5.0)
Amortization of prior service (credit) cost	0.3	0.3	(0.3)
Amortization of actuarial loss	0.0	0.0	0.0
Subtotal	(2.4)	(2.4)	(3.5)
Regulatory adjustment	(1.8)	(1.8)	(1.8)
Net pension cost	$ (4.2)	$ (4.2)	$ (5.3)

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Note 13 - Pension Plans and Other Postretirement Benefits - Other Changes in Plan Assets and Pension Benefit Obligations (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Pension Plan [Member]
Current year actuarial (gain) loss	$ (16.9)	$ (8.1)	$ 68.0
Amortization of actuarial loss	(11.9)	(14.9)	(14.4)
Acceleration of loss recognized due to settlement	(33.6)	(18.2)	(31.7)
Current year service credit	0.0	(17.9)	(4.4)
Amortization of prior service credit (cost)	4.5	3.1	2.5
Subtotal	(57.9)	(56.0)	20.0
Regulatory adjustment	56.3	57.3	(19.5)
Total recognized in OCI	(1.6)	1.3	0.5
Pension Plan [Member] | Spire Missouri [Member]
Current year actuarial (gain) loss	0.9	(0.9)	37.8
Amortization of actuarial loss	(9.6)	(11.0)	(11.3)
Acceleration of loss recognized due to settlement	(27.3)	(11.6)	(26.6)
Current year service credit	0.0	(17.9)	(4.4)
Amortization of prior service credit (cost)	1.9	0.6	(0.1)
Subtotal	(34.1)	(40.8)	(4.6)
Regulatory adjustment	32.5	42.1	5.1
Total recognized in OCI	(1.6)	1.3	0.5
Pension Plan [Member] | Spire Alabama Inc [Member]
Current year actuarial (gain) loss	(16.0)	(1.5)	24.4
Amortization of actuarial loss	(2.4)	(3.9)	(3.1)
Acceleration of loss recognized due to settlement	(6.3)	(6.6)	(5.1)
Current year service credit	0.0	0.0	0.0
Amortization of prior service credit (cost)	2.4	2.3	2.4
Subtotal	(22.3)	(9.7)	18.6
Regulatory adjustment	22.3	9.7	(18.6)
Total recognized in OCI	0.0	0.0	0.0
Other Postretirement Benefits Plan [Member]
Current year actuarial (gain) loss	15.8	(41.0)	(7.3)
Amortization of actuarial loss	2.2	1.6	2.0
Amortization of prior service credit (cost)	(1.0)	(1.0)	0.5
Subtotal	10.7	(40.4)	11.0
Regulatory adjustment	(10.7)	40.4	(11.0)
Total recognized in OCI	0.0	0.0	0.0
Current year prior service (cost) credit	(6.3)	0.0	15.8
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Current year actuarial (gain) loss	9.8	(29.0)	(7.6)
Amortization of actuarial loss	1.9	1.5	2.0
Amortization of prior service credit (cost)	(0.7)	(0.7)	0.2
Subtotal	9.9	(28.2)	4.1
Regulatory adjustment	(9.9)	28.2	(4.1)
Total recognized in OCI	0.0	0.0	0.0
Current year prior service (cost) credit	(1.1)	0.0	9.5
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Current year actuarial (gain) loss	5.9	(9.9)	1.1
Amortization of actuarial loss	0.0	0.0	0.0
Amortization of prior service credit (cost)	(0.3)	(0.3)	0.3
Subtotal	0.4	(10.2)	7.7
Regulatory adjustment	(0.4)	10.2	(7.7)
Total recognized in OCI	0.0	0.0	0.0
Current year prior service (cost) credit	$ (5.2)	$ 0.0	$ 6.3

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Note 13 - Pension Plans and Other Postretirement Benefits - Reconciliation of Pension Benefit Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Settlement benefits paid	$ 0	$ 0
Pension Plan [Member]
Benefit obligation, beginning of year	689,600	732,600
Service cost – benefits earned during the period	20,000	21,700	$ 22,500
Interest cost on projected benefit obligation	21,500	20,700	22,600
Actuarial (gain) loss	(173,900)	6,600
Plan amendments	0	(17,900)
Settlement loss	33,400	12,300
Settlement benefits paid	(109,300)	(67,600)
Regular benefits paid	(16,900)	(18,800)
Benefit obligation, end of year	464,400	689,600	732,600
Accumulated benefit obligation, end of year	457,100	673,300
Pension Plan [Member] | Spire Missouri [Member]
Benefit obligation, beginning of year	479,000	505,200
Service cost – benefits earned during the period	14,400	15,400	15,700
Interest cost on projected benefit obligation	14,700	14,200	15,800
Actuarial (gain) loss	(116,200)	11,000
Plan amendments	0	(17,900)
Settlement loss	27,900	8,200
Settlement benefits paid	(87,000)	(44,600)
Regular benefits paid	(12,200)	(12,500)
Benefit obligation, end of year	320,600	479,000	505,200
Accumulated benefit obligation, end of year	315,000	465,400
Pension Plan [Member] | Spire Alabama Inc [Member]
Benefit obligation, beginning of year	149,400	163,500
Service cost – benefits earned during the period	4,800	5,500	6,100
Interest cost on projected benefit obligation	4,700	4,600	4,900
Actuarial (gain) loss	(42,400)	(1,800)
Plan amendments	0	0
Settlement loss	5,600	4,100
Settlement benefits paid	(22,300)	(22,900)
Regular benefits paid	(2,000)	(3,600)
Benefit obligation, end of year	97,800	149,400	163,500
Accumulated benefit obligation, end of year	96,200	146,900
Other Postretirement Benefits Plan [Member]
Benefit obligation, beginning of year	204,200	212,300
Service cost – benefits earned during the period	7,500	7,300	5,900
Interest cost on projected benefit obligation	6,000	6,000	6,300
Actuarial (gain) loss	(52,600)	(7,500)
Plan amendments	(6,200)	0
Regular benefits paid	(11,000)	(13,900)
Benefit obligation, end of year	148,100	204,200	212,300
Retiree drug subsidy program	200	0
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Benefit obligation, beginning of year	151,700	158,400
Service cost – benefits earned during the period	6,300	6,200	5,300
Interest cost on projected benefit obligation	4,500	4,500	4,700
Actuarial (gain) loss	(37,700)	(6,700)
Plan amendments	(1,000)	0
Regular benefits paid	(9,200)	(10,700)
Benefit obligation, end of year	114,800	151,700	158,400
Retiree drug subsidy program	200	0
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Benefit obligation, beginning of year	48,000	48,300
Service cost – benefits earned during the period	1,100	900	400
Interest cost on projected benefit obligation	1,400	1,300	1,400
Actuarial (gain) loss	(13,600)	700
Plan amendments	(5,200)	0
Regular benefits paid	(1,800)	(3,200)
Benefit obligation, end of year	29,900	48,000	$ 48,300
Retiree drug subsidy program	$ 0	$ 0

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Note 13 - Pension Plans and Other Postretirement Benefits - Reconciliation of Fair Value of Plan Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Spire Missouri [Member]
Fair value of plan assets, beginning of year	$ 364.0	$ 336.2
Actual return on plan assets		42.7
Employer contributions		42.2
Settlement benefits paid		(44.6)
Regular benefits paid		(12.5)
Fair value of plan assets, end of year		364.0
Funded status of plans, end of year		(115.0)
Spire Alabama Inc [Member]
Fair value of plan assets, beginning of year	82.8	88.6
Actual return on plan assets		9.6
Employer contributions		11.1
Settlement benefits paid		(22.9)
Regular benefits paid		(3.6)
Fair value of plan assets, end of year		82.8
Funded status of plans, end of year		(66.6)
Pension Plan [Member]
Fair value of plan assets, beginning of year	498.9	473.1
Actual return on plan assets	(92.5)	58.8
Employer contributions	52.4	53.4
Settlement benefits paid	(109.3)	(67.6)
Regular benefits paid	(16.8)	(18.8)
Fair value of plan assets, end of year	332.7	498.9
Funded status of plans, end of year	(131.7)	(190.7)
Pension Plan [Member] | Spire Missouri [Member]
Fair value of plan assets, beginning of year	364.0
Actual return on plan assets	(66.7)
Employer contributions	37.8
Settlement benefits paid	(87.0)
Regular benefits paid	(12.2)
Fair value of plan assets, end of year	235.9	364.0
Funded status of plans, end of year	(84.7)
Pension Plan [Member] | Spire Alabama Inc [Member]
Fair value of plan assets, beginning of year	82.8
Actual return on plan assets	(15.6)
Employer contributions	14.4
Settlement benefits paid	(22.3)
Regular benefits paid	(2.0)
Fair value of plan assets, end of year	57.3	82.8
Funded status of plans, end of year	(40.5)
Other Postretirement Benefits Plan [Member]
Fair value of plan assets, beginning of year	326.9	291.0
Actual return on plan assets	(51.6)	49.7
Employer contributions	0.4	0.1
Regular benefits paid	(11.0)	(13.9)
Fair value of plan assets, end of year	264.7	326.9
Funded status of plans, end of year	116.6	122.7
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Fair value of plan assets, beginning of year	221.7	199.2
Actual return on plan assets	(36.2)	33.1
Employer contributions	0.4	0.1
Regular benefits paid	(9.2)	(10.7)
Fair value of plan assets, end of year	176.7	221.7
Funded status of plans, end of year	61.9	70.0
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Fair value of plan assets, beginning of year	99.4	87.0
Actual return on plan assets	(14.3)	15.6
Employer contributions	0.0	0.0
Regular benefits paid	(1.8)	(3.2)
Fair value of plan assets, end of year	83.3	99.4
Funded status of plans, end of year	$ 53.4	$ 51.4

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Note 13 - Pension Plans and Other Postretirement Benefits - Amounts Recognized in the Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Noncurrent liabilities	$ (163.0)	$ (235.9)
Spire Missouri [Member]
Noncurrent liabilities	(115.5)	(159.5)
Spire Alabama Inc [Member]
Noncurrent liabilities	(40.5)	(66.7)
Pension Plan [Member]
Current liabilities	(1.1)	(0.8)
Noncurrent liabilities	(130.6)	(189.9)
Total	(131.7)	(190.7)
Pension Plan [Member] | Spire Missouri [Member]
Current liabilities	(1.1)	(0.8)
Noncurrent liabilities	(83.6)	(114.2)
Total	(84.7)	(115.0)
Pension Plan [Member] | Spire Alabama Inc [Member]
Current liabilities	0.0	0.0
Noncurrent liabilities	(40.5)	(66.6)
Total	(40.5)	(66.6)
Other Postretirement Benefits Plan [Member]
Current liabilities	(0.3)	(0.5)
Noncurrent liabilities	(34.7)	(47.0)
Noncurrent assets	151.6	170.2
Total	116.6	122.7
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Current liabilities	(0.3)	(0.5)
Noncurrent liabilities	(34.7)	(47.0)
Noncurrent assets	96.9	117.5
Total	61.9	70.0
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Current liabilities	0.0	0.0
Noncurrent liabilities	0.0	0.0
Noncurrent assets	53.4	51.4
Total	$ 53.4	$ 51.4

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Note 13 - Pension Plans and Other Postretirement Benefits - Amounts Recognized in AOCI Not Yet Recognized As Components of Net Periodic Pension Costs (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Spire Missouri [Member]
Net actuarial loss		$ 129.6
Prior service credit		(20.1)
Subtotal		109.5
Adjustments for amounts included in regulatory assets		(104.7)
Total		4.8
Spire Alabama Inc [Member]
Net actuarial loss		66.1
Prior service credit		(18.7)
Subtotal		47.4
Adjustments for amounts included in regulatory assets		(47.4)
Total		0.0
Pension Plan [Member]
Net actuarial loss	$ 132.0	194.6
Prior service credit	(35.7)	(40.3)
Subtotal	96.3	154.3
Adjustments for amounts included in regulatory assets	(93.1)	(149.5)
Total	3.2	4.8
Pension Plan [Member] | Spire Missouri [Member]
Net actuarial loss	93.6
Prior service credit	(18.1)
Subtotal	75.5
Adjustments for amounts included in regulatory assets	(72.3)
Total	3.2
Pension Plan [Member] | Spire Alabama Inc [Member]
Net actuarial loss	41.2
Prior service credit	(16.3)
Subtotal	24.9
Adjustments for amounts included in regulatory assets	(24.9)
Total	0.0
Other Postretirement Benefits Plan [Member]
Net actuarial loss	(83.3)	(101.2)
Prior service credit	7.1	14.6
Subtotal	(76.2)	(86.6)
Adjustments for amounts included in regulatory assets	76.2	86.6
Total	0.0	0.0
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Net actuarial loss	(74.2)	(85.8)
Prior service credit	7.9	9.7
Subtotal	(66.3)	(76.1)
Adjustments for amounts included in regulatory assets	66.3	76.1
Total	0.0	0.0
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Net actuarial loss	(5.6)	(11.5)
Prior service credit	(0.8)	4.9
Subtotal	(6.4)	(6.6)
Adjustments for amounts included in regulatory assets	6.4	6.6
Total	$ 0.0	$ 0.0

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Note 13 - Pension Plans and Other Postretirement Benefits - Assumption Used (Details)	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Pension Plan [Member]
Weighted average rate of future compensation increase	3.00%	3.00%
Spire Alabama Inc [Member] | Pension Plan [Member]
Weighted average rate of future compensation increase	3.00%	3.00%	3.00%
Expected long-term rate of return on plan assets	6.75%	6.75%	7.25%
Weighted average discount rate		3.10%	2.95%
Spire Alabama Inc [Member] | Pension Plan [Member] | Maximum [Member]
Weighted average discount rate	3.10%	2.95%	3.25%
Weighted average discount rate	5.70%	3.10%
Spire Alabama Inc [Member] | Pension Plan [Member] | Minimum [Member]
Weighted average discount rate	3.00%	2.80%	3.20%
Weighted average discount rate	5.65%	3.00%
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member]
Weighted average discount rate	2.95%	2.75%	3.15%
Weighted average discount rate	5.80%	2.95%
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member] | Maximum [Member]
Expected long-term rate of return on plan assets	6.25%	6.25%	6.25%
Spire Alabama Inc [Member] | Other Postretirement Benefits Plan [Member] | Minimum [Member]
Expected long-term rate of return on plan assets	5.00%	5.00%	5.00%
Spire Missouri East [Member] | Pension Plan [Member]
Weighted average discount rate	3.00%	2.85%	3.20%
Weighted average discount rate	5.70%	3.00%
Spire Missouri East [Member] | Other Postretirement Benefits Plan [Member]
Weighted average rate of future compensation increase	3.00%	3.00%
Spire Missouri [Member] | Pension Plan [Member]
Weighted average rate of future compensation increase	3.00%	3.00%	3.00%
Expected long-term rate of return on plan assets	6.75%	6.75%	7.25%
Weighted average discount rate		3.00%	2.85%
Spire Missouri [Member] | Other Postretirement Benefits Plan [Member]
Weighted average discount rate	2.95%	2.75%	3.15%
Weighted average rate of future compensation increase	3.00%	3.00%	3.00%
Expected long-term rate of return on plan assets	5.75%	5.75%	6.25%
Weighted average discount rate	5.80%	2.95%
Spire Missouri West [Member] | Pension Plan [Member]
Weighted average discount rate	3.00%	2.75%	3.15%
Weighted average discount rate	5.80%	3.00%
Spire Alabama or Spire Missouri [Member] | Pension Plan [Member]
Cash balance interest crediting rate - Spire Alabama / Spire Missouri	4.25%	4.25%

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Note 13 - Pension Plans and Other Postretirement Benefits - PBO, ABO, and Fair Value of Plan Assets for Plans in Excess of Plan Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Projected benefit obligation	$ 464.4	$ 689.6
Accumulated benefit obligation	457.1	673.3
Fair value of plan assets	332.7	498.9
Spire Missouri [Member]
Projected benefit obligation	320.6	479.0
Accumulated benefit obligation	315.0	465.4
Fair value of plan assets	235.9	364.0
Spire Alabama Inc [Member]
Projected benefit obligation	97.8	149.4
Accumulated benefit obligation	96.2	146.9
Fair value of plan assets	$ 57.3	$ 82.8

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Note 13 - Pension Plans and Other Postretirement Benefits - Targeted and Actual Plan Assets by Category (Details)	Sep. 30, 2022	Sep. 30, 2021
Pension Plan [Member] | Spire Missouri [Member]
Return seeking assets, target	100.00%	100.00%
Return seeking assets, actual	100.00%	100.00%
Pension Plan [Member] | Spire Missouri [Member] | Return Seeking Assets [Member]
Return seeking assets, target	70.00%	70.00%
Return seeking assets, actual	74.30%	74.50%
Pension Plan [Member] | Spire Missouri [Member] | Liability Hedging Assets [Member]
Return seeking assets, target	30.00%	30.00%
Return seeking assets, actual	22.80%	23.10%
Pension Plan [Member] | Spire Missouri [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Return seeking assets, target	0.00%	0.00%
Return seeking assets, actual	2.90%	2.40%
Pension Plan [Member] | Spire Alabama Inc [Member]
Return seeking assets, target	100.00%	100.00%
Return seeking assets, actual	100.00%	100.00%
Pension Plan [Member] | Spire Alabama Inc [Member] | Return Seeking Assets [Member]
Return seeking assets, target	70.00%	70.00%
Return seeking assets, actual	68.70%	72.80%
Pension Plan [Member] | Spire Alabama Inc [Member] | Liability Hedging Assets [Member]
Return seeking assets, target	30.00%	30.00%
Return seeking assets, actual	25.30%	25.50%
Pension Plan [Member] | Spire Alabama Inc [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Return seeking assets, target	0.00%	0.00%
Return seeking assets, actual	6.00%	1.70%
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Return seeking assets, target	100.00%
Return seeking assets, actual	100.00%	100.00%
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member] | Defined Benefit Plan, Equity Securities [Member]
Return seeking assets, target	60.00%
Return seeking assets, actual	58.70%	59.20%
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member] | Debt Securities [Member]
Return seeking assets, target	40.00%
Return seeking assets, actual	40.50%	38.90%
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Return seeking assets, target	0.00%
Return seeking assets, actual	0.80%	1.90%
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Return seeking assets, target	100.00%
Return seeking assets, actual	100.00%	100.00%
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member] | Defined Benefit Plan, Equity Securities [Member]
Return seeking assets, target	60.50%
Return seeking assets, actual	57.70%	60.50%
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member] | Debt Securities [Member]
Return seeking assets, target	39.50%
Return seeking assets, actual	42.30%	39.50%

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Note 13 - Pension Plans and Other Postretirement Benefits - Expected Pension Benefit Payments for Succeeding Fiscal Years (Details) $ in Millions	Sep. 30, 2022 USD ($)
Pension Plan [Member]
2023	$ 55.8
2024	52.3
2025	47.2
2026	44.0
2027	43.5
2027-2031	202.9
Pension Plan [Member] | Spire Missouri [Member]
2023	41.4
2024	38.9
2025	33.9
2026	30.8
2027	29.6
2027-2031	137.5
Pension Plan [Member] | Spire Alabama Inc [Member]
2023	11.3
2024	10.2
2025	9.9
2026	9.7
2027	10.4
2027-2031	46.4
Other Postretirement Benefits Plan [Member]
2023	13.7
2024	14.4
2025	14.6
2026	14.5
2027	14.7
2027-2031	69.5
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
2023	11.6
2024	12.2
2025	12.3
2026	12.2
2027	12.2
2027-2031	55.7
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
2023	1.9
2024	2.0
2025	2.1
2026	2.1
2027	2.2
2027-2031	$ 11.9

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Note 13 - Pension Plans and Other Postretirement Benefits - Assumed Medical Cost Trend Rates (Details) - Other Postretirement Benefits Plan [Member]	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Rate to which the medical cost trend rate is assumed to decline (the ultimate medical cost trend rate)	5.00%	5.00%
Year the rate reaches the ultimate trend	2028	2028
Spire Missouri [Member]
Medical cost trend assumed for next year	6.75%	7.00%
Spire Alabama Inc [Member]
Medical cost trend assumed for next year	6.75%	7.00%

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Note 13 - Pension Plans and Other Postretirement Benefits - Fair Value Measurements of Pension Plan Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Spire Missouri [Member]
Defined Benefit Plan Assets		$ 364.0	$ 336.2
Spire Alabama Inc [Member]
Defined Benefit Plan Assets		82.8	88.6
Pension Plan [Member]
Defined Benefit Plan Assets	$ 332.7	498.9	473.1
Pension Plan [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	235.9	364.0
Pension Plan [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	57.3	82.8
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	89.9	129.1
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	59.7	92.3
Pension Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	18.0	22.6
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	242.8	369.8
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	176.2	271.7
Pension Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	39.3	60.2
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Defined Benefit Plan Assets	11.5	10.6
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	5.7	8.3
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	3.5	1.4
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	11.5	10.6
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	5.7	8.3
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	3.5	1.4
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member]
Defined Benefit Plan Assets	122.2	201.2
Pension Plan [Member] | Equity Funds [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	85.7	148.6
Pension Plan [Member] | Equity Funds [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	21.6	32.3
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	122.2	201.2
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	85.7	148.6
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	21.6	32.3
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member]
Defined Benefit Plan Assets	61.0	87.7
Pension Plan [Member] | Real Asset Funds [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	47.2	59.2
Pension Plan [Member] | Real Asset Funds [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	8.1	14.6
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	61.0	87.7
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	47.2	59.2
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	8.1	14.6
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Real Asset Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member]
Defined Benefit Plan Assets	42.3	58.4
Pension Plan [Member] | U S Bond Funds [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	29.4	38.4
Pension Plan [Member] | U S Bond Funds [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	7.7	12.3
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	42.3	58.4
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	29.4	38.4
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	7.7	12.3
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Bond Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member]
Defined Benefit Plan Assets	36.1	60.1
Pension Plan [Member] | U S Government Index Funds [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	24.6	45.6
Pension Plan [Member] | U S Government Index Funds [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	6.8	8.9
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	36.1	60.1
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	24.6	45.6
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	6.8	8.9
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | U S Government Index Funds [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member]
Defined Benefit Plan Assets	59.6	80.9
Pension Plan [Member] | Global Funds Including U S [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	43.3	63.9
Pension Plan [Member] | Global Funds Including U S [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	9.6	13.3
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	59.6	80.9
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	43.3	63.9
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	9.6	13.3
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Pension Plan [Member] | Global Funds Including U S [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Assets	264.7	326.9	291.0
Other Postretirement Benefits Plan [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	176.7	221.7	199.2
Other Postretirement Benefits Plan [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	83.3	99.4	$ 87.0
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	181.4	227.5
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	176.7	221.7
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	83.3	99.4
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	83.3	99.4
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member]
Defined Benefit Plan Assets	3.5	3.1
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	2.7	2.4
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	3.5	3.1
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	2.7	2.4
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member]
Defined Benefit Plan Assets	246.5	305.7
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	174.0	219.3
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	69.4	82.5
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	177.1	223.2
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	174.0	219.3
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	69.4	82.5
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	69.4	82.5
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Missouri [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | U S Stock Bond Mutual Fund [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member]
Defined Benefit Plan Assets	14.7	18.1
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	13.9	16.9
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Assets	0.8	1.2
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 1 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Assets	13.9	16.9
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 2 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	13.9	16.9
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Assets	0.0	0.0
Other Postretirement Benefits Plan [Member] | Debt Security, Corporate, Non-US [Member] | Fair Value, Inputs, Level 3 [Member] | Spire Alabama Inc [Member]
Defined Benefit Plan Assets	$ 0.0	$ 0.0

XML

Note 14 - Information by Operating Segment (Details Textual)	12 Months Ended
	Sep. 30, 2022
Number of Reportable Segments	2

XML

Note 14 - Information by Operating Segment - Segment Information by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Revenues from external customers	$ 2,198.5	$ 2,235.5	$ 1,855.4
Intersegment revenues	0.0	0.0	0.0
Operating Revenues	2,198.5	2,235.5	1,855.4
Natural gas	923.9	946.3	696.1
Operation and maintenance	449.6	465.8	458.6
Depreciation and amortization	237.3	213.1	197.3
Taxes, other than income taxes	179.5	160.1	148.4
Total Operating Expenses	1,790.3	1,785.3	1,649.0
Operating Income	408.2	450.2	206.4
Net Economic Earnings (Loss)	216.3	266.3	207.8
Capital Expenditures	552.2	624.8	638.4
Impairments	0.0	0.0	148.6
Consolidation, Eliminations [Member]
Revenues from external customers	0.0	0.0	0.0
Intersegment revenues	(51.7)	(48.0)	(42.3)
Operating Revenues	(51.7)	(48.0)	(42.3)
Natural gas	(36.3)	(34.3)	(29.6)
Operation and maintenance	(15.4)	(13.7)	(12.7)
Depreciation and amortization	0.0	0.0	0.0
Taxes, other than income taxes	0.0	0.0	0.0
Total Operating Expenses	(51.7)	(48.0)	(42.3)
Operating Income	0.0	0.0	0.0
Net Economic Earnings (Loss)	0.0	0.0	0.0
Capital Expenditures	0.0	0.0	0.0
Impairments		0.0	0.0
Gas Utility [Member] | Operating Segments [Member]
Revenues from external customers	1,945.6	2,118.2	1,751.8
Intersegment revenues	0.5	1.1	0.2
Operating Revenues	1,946.1	2,119.3	1,752.0
Natural gas	788.8	961.7	660.2
Operation and maintenance	413.3	422.2	421.3
Depreciation and amortization	227.9	204.4	189.7
Taxes, other than income taxes	176.2	157.0	146.5
Total Operating Expenses	1,606.2	1,745.3	1,417.7
Operating Income	339.9	374.0	334.3
Net Economic Earnings (Loss)	202.7	230.6	213.4
Capital Expenditures	528.6	590.4	547.8
Impairments		0.0	0.0
Gas Marketing [Member] | Operating Segments [Member]
Revenues from external customers	234.9	96.5	87.9
Intersegment revenues	0.0	0.0	0.0
Operating Revenues	234.9	96.5	87.9
Natural gas	171.4	18.8	65.1
Operation and maintenance	14.6	17.1	11.8
Depreciation and amortization	1.4	1.2	0.6
Taxes, other than income taxes	0.6	0.9	1.1
Total Operating Expenses	188.0	38.0	78.6
Operating Income	46.9	58.5	9.3
Net Economic Earnings (Loss)	27.0	47.0	9.1
Capital Expenditures	0.9	0.7	3.6
Impairments		0.0	0.0
Other Segments [Member] | Operating Segments [Member]
Revenues from external customers	18.0	20.8	15.7
Intersegment revenues	51.2	46.9	42.1
Operating Revenues	69.2	67.7	57.8
Natural gas	0.0	0.1	0.4
Operation and maintenance	37.1	40.2	38.2
Depreciation and amortization	8.0	7.5	7.0
Taxes, other than income taxes	2.7	2.2	0.8
Total Operating Expenses	47.8	50.0	195.0
Operating Income	21.4	17.7	(137.2)
Net Economic Earnings (Loss)	(13.4)	(11.3)	(14.7)
Capital Expenditures	$ 22.7	33.7	87.0
Impairments		$ 0.0	$ 148.6

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Note 14 - Information by Operating Segment - Total Assets by Segment (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Total Assets	$ 10,083.7	$ 9,356.4	$ 8,241.2
Operating Segments [Member] | Gas Utility [Member]
Total Assets	8,042.8	7,615.4	6,716.2
Operating Segments [Member] | Gas Marketing [Member]
Total Assets	638.7	466.1	182.7
Operating Segments [Member] | Other Segments [Member]
Total Assets	2,895.2	2,351.7	2,443.5
Consolidation, Eliminations [Member]
Total Assets	$ (1,493.0)	$ (1,076.8)	$ (1,101.2)

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Note 14 - Information by Operating Segment - Net Economic Earnings to Net Income (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Net Income	$ 220.8	$ 271.7	$ 88.6
Impairments	0.0	0.0	148.6
Missouri regulatory adjustments	0.0	(9.0)	0.0
Fair value and timing adjustments	(11.4)	3.3	2.5
Acquisition, divestiture and restructuring activities	0.0	(1.3)	0.0
Income tax effect of adjustments	6.9	1.6	(31.9)
Net Economic Earnings	$ 216.3	$ 266.3	$ 207.8

XML

Note 15 - Regulatory Matters (Details Textual) - USD ($) $ in Thousands																1 Months Ended			3 Months Ended		6 Months Ended	7 Months Ended	12 Months Ended
	Nov. 18, 2022	Oct. 26, 2022	Oct. 07, 2022	Oct. 05, 2022	Sep. 14, 2022	Apr. 22, 2022	Apr. 21, 2022	Jan. 18, 2022	Jan. 01, 2022	Dec. 29, 2021	Dec. 23, 2021	Oct. 26, 2021	Aug. 23, 2021	Aug. 30, 2019	Oct. 01, 2018	Sep. 30, 2022	Feb. 28, 2021	Nov. 30, 2019	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020	Sep. 13, 2022	Jul. 12, 2022	Feb. 23, 2022
Customer Share																75.00%								75.00%
Regulatory Asset, Current																$ 355,400								$ 355,400	$ 306,500
Utilities Operating Expense, Gas and Petroleum Purchased																								923,900	946,300	$ 696,100
Spire S T L Pipeline L L C [Member]
Asset Impairment Charges, Total																				$ 270,000
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																1,300,000								1,300,000
Missouri Public Service Commission [Member]
Accrued Pension Assets Added to Prepaid Pension Asset																$ 9,000								9,000
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue														$ 300
Missouri Public Service Commission [Member] | Infrastructure System Replacement Surcharge [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount											$ 47,300
Alabama Public Service Commission [Member] | Enhanced Stability Reserve [Member]
Utilities Operating Expense Maintenance and Operations Self Insurance Cost Deferred Amount																								1,000
Utilities Operating Expense Maintenance and Operations Self Insurance Cost Single Force Majeure Event Deferred Amount																								300
Utilities Operating Expense Maintenance and Operations Self Insurance Cost Multiple Force Majeure Events Deferred Amount																								400
Regulated Operating Revenue Variances Amount																								$ 400
Regulated Operations Enhanced Stability Reserve Term (Year)																								9 years
Regulated Operations Enhanced Stability Reserve Underfunded Balances Amortization Term (Year)																								5 years
Regulated Operations, Enhanced Stability Reserve, Unfunded Balances, Amortization, Annual Limitation																								$ 700
Spire Missouri [Member]
Customer Share																25.00%								25.00%
Regulatory Asset, Current																$ 288,100								$ 288,100	276,300
Utilities Operating Expense, Gas and Petroleum Purchased																	$ 195,800							587,000	786,800	515,800
Public Utilities, Reduced Revenue Accounts Receivable Cost Of Gas and Regulatory Liabilities																			$ 150,000
Utilities Operating, Due From Other Parties																			$ 42,000
Public Utilities Approved Percentages of Excess Natural Gas Supply and Capacity To Retain																	25.00%
Public Utilities Approved Percentages of Excess Natural Gas Supply and Capacity to Customers																	75.00%
Regulated Operating Revenue, Gas																	$ 100,000
Equity and Debt Financing, Authority Pending Approval																													$ 800,000
Spire Missouri [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																575,000								575,000
Spire Missouri [Member] | Infrastructure System Replacement Surcharge [Member]
Loss Contingency Accrual, Provision																										12,200
Regulated Operating Revenue, Pipelines																					$ 11,900	$ 11,300
Regulated Incremental Annual Revenue From Settlement							$ 8,500
Spire Missouri [Member] | Infrastructure System Replacement Surcharge [Member] | Subsequent Event [Member]
Regulated Incremental Annual Revenue From Settlement				$ 10,500
Regulated Operating Revenue, Total				$ 19,000
Spire Missouri [Member] | Missouri Public Service Commission [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount											72,200
Public Utilities, Requested Rate Increase (Decrease), Amount											$ 24,900
Public Utilities, Deferred Amount Under Order Authorizing Accounting Treatment																42,800								42,800
Deferred Amount in Accordance With New Capitalization Rates																19,000								19,000
Public Utilities, Deferred Amount Prudent Costs in Excess of Capitalization Rates																18,800								18,800
Deferred Amount, Prudent Costs Related To I S R S Settlement																5,000								5,000
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount																								151,900
Spire Missouri [Member] | Missouri Public Service Commission [Member] | Forecast [Member]
Public Utilities, Pending, New Base Rate Revenue Authorized	$ 78,000
Spire Missouri [Member] | Missouri Public Service Commission [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amended, Amount			$ 71,000
Spire Missouri [Member] | Missouri Public Service Commission [Member] | Accounting Authority Order [Member]
Regulatory Asset, Current																6,200								6,200
Spire Alabama Inc [Member]
Regulatory Asset, Current																$ 56,900								56,900	18,800
Utilities Operating Expense, Gas and Petroleum Purchased																								$ 161,500	145,300	$ 118,900
Public Utilities, Rate Increase Decrease Index Range Margin																1.50%								1.50%
Public Utilities, Approved Point of Test Giveback Under Rate Stabilization and Equalization																$ 2,200								$ 2,200	2,200
Spire Alabama Inc [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																275,000								275,000
Spire Alabama Inc [Member] | Revolving Credit Facility [Member] | Spire [Member]
Line of Credit Facility, Maximum Borrowing Capacity																									200,000			$ 275,000
Spire Alabama Inc [Member] | Maximum [Member] | Spire [Member]
Notes Receivable, Related Parties																$ 25,000								25,000				$ 25,000
Spire Alabama Inc [Member] | Alabama Public Service Commission [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount									$ 5,300																8,800
Public Utilities, Requested Rate Increase (Decrease), Amount										$ 5,300														$ 17,200
Public Utilities Maximum Return on Equity Percentage of Prior Year Revenues																4.00%								4.00%
Public Utilities, Approved Return on Equity, Percentage															10.40%	9.70%
Public Utilities, Rate Increase Decrease Index Range Margin																0.10%								0.10%
Public Utilities, Equity Limitation as Percent of Total Capitalization																55.50%								55.50%
Public Utilities Approved Percentage of Excess Natural Gas Supply and Capacity To Retain						25.00%												25.00%
Public Utilities Approved Percentage of Excess Natural Gas Supply and Capacity to Customers																		75.00%
Public Utilities, Value From Capacity Release, Threshold						$ 1,600
Spire Alabama Inc [Member] | Alabama Public Service Commission [Member] | Maximum [Member]
Public Utilities, Approved Equity Capital Structure, Percentage															56.50%
Public Utilities, Approved Return on Equity, Percentage															10.65%	9.90%
Public Utilities, Average Common Equity Growth																6.00%
Long Term Debt, Approved Amount																											$ 175,000
Spire Alabama Inc [Member] | Alabama Public Service Commission [Member] | Minimum [Member]
Public Utilities, Approved Equity Capital Structure, Percentage															55.50%
Public Utilities, Approved Return on Equity, Percentage															10.15%	9.50%
Spire Gulf [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount																								$ 1,700	2,300
Public Utilities, Approved Return on Equity, Percentage												9.95%												10.70%
Public Utilities, Rate Increase Decrease Index Range Margin																1.50%								1.50%
Utilities Operating Expense Maintenance and Operations Self Insurance Cost Single Force Majeure Event Deferred Amount																								$ 100
Utilities Operating Expense Maintenance and Operations Self Insurance Cost Multiple Force Majeure Events Deferred Amount																								150
Regulated Operating Revenue Variances Amount																								$ 100
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue												$ 1,000
Public Utilities, Approved Rate, Net Income Benefit																									$ 1,600
Public Utilities, Approved Return on Equity, Pro-Rata, Percentage																								75.00%
Regulated Operations, Recovery of Incurred Costs, Percentage																								90.00%
Spire Gulf [Member] | Maximum [Member]
Public Utilities, Approved Return on Equity, Percentage																								10.95%
Spire Gulf [Member] | Minimum [Member]
Public Utilities, Approved Return on Equity, Percentage																								10.45%
Spire Gulf [Member] | Forecast [Member]
Public Utilities, Approved Return on Equity, Percentage																							9.95%
Spire Gulf [Member] | Forecast [Member] | Maximum [Member]
Public Utilities, Approved Return on Equity, Percentage																							10.30%
Spire Gulf [Member] | Forecast [Member] | Minimum [Member]
Public Utilities, Approved Return on Equity, Percentage																							9.70%
Spire Gulf [Member] | Subsequent Event [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 3,500
Spire Gulf [Member] | Alabama Public Service Commission [Member] | Debt Issued on October 13, 2022 [Member]
Long Term Debt, Approved Amount																											$ 30,000
Spire [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																$ 450,000								$ 450,000
Spire [Member] | Alabama Public Service Commission [Member]
Line of Credit Facility, Maximum Borrowing Capacity																$ 75,000								$ 75,000
Spire Mississippi [Member]
Public Utilities, Approved Rate Increase (Decrease), Amount					$ 1,300
Public Utilities, Approved Return on Equity, Percentage																								10.03%
Public Utilities, Approved Rate, Increase Decrease Annualized Revenue								$ 800					$ 1,100
Public Utilities, Approved Return on Equity, Excess of Allowed Return, Percentage																								1.00%
Public Utilities, Approved Return on Equity Shortfall Percentage																								75.00%
Public Utilities, Approved Return On Equity, Excess, Percentage																								50.00%
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
PGA Assets [Member]
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)																								1 year
PGA Assets Due to Filing Adjustment Factors [Member]
Remaining Recovery Period of Regulatory Assets for which No Return on Investment During Recovery Period is Provided (Year)																								3 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

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Note 15 - Regulatory Matters - Regulatory Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Regulatory assets	$ 355.4	$ 306.5
Regulatory Assets Noncurrent	1,112.4	993.5
Total Regulatory Assets	1,467.8	1,300.0
Regulatory liabilities	3.7	34.6
Regulatory Liability Noncurrent	418.2	620.9
Total Regulatory Liabilities	421.9	655.5
Spire Missouri [Member]
Regulatory assets	288.1	276.3
Regulatory Assets Noncurrent	547.6	483.1
Total Regulatory Assets	835.7	759.4
Regulatory liabilities	0.0	17.1
Regulatory Liability Noncurrent	331.8	538.8
Total Regulatory Liabilities	331.8	555.9
Spire Alabama Inc [Member]
Regulatory assets	56.9	18.8
Regulatory Assets Noncurrent	538.2	483.3
Total Regulatory Assets	595.1	502.1
Regulatory liabilities	0.0	13.4
Regulatory Liability Noncurrent	23.0	23.4
Total Regulatory Liabilities	23.0	36.8
Pension and Other Postretirement Plans Costs [Member]
Regulatory assets	0.0	31.1
Regulatory Assets Noncurrent	294.5	313.8
Regulatory liabilities	0.0	5.8
Regulatory Liability Noncurrent	172.6	159.3
Pension and Other Postretirement Plans Costs [Member] | Spire Missouri [Member]
Regulatory assets	0.0	21.9
Regulatory Assets Noncurrent	222.9	226.0
Regulatory liabilities	0.0	3.6
Regulatory Liability Noncurrent	143.6	131.4
Pension and Other Postretirement Plans Costs [Member] | Spire Alabama Inc [Member]
Regulatory assets	0.0	8.2
Regulatory Assets Noncurrent	66.5	82.9
Regulatory liabilities	0.0	2.2
Regulatory Liability Noncurrent	19.4	19.8
Unamortized Purchased Gas Adjustments Asset [Member]
Regulatory assets	322.2	243.5
Regulatory Assets Noncurrent	0.0	11.0
Regulatory liabilities	53.0	284.3
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Missouri [Member]
Regulatory assets	275.1	242.8
Regulatory Assets Noncurrent	0.0	0.0
Regulatory liabilities	53.0	284.3
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Alabama Inc [Member]
Regulatory assets	43.8	0.0
Regulatory Assets Noncurrent	0.0	10.2
Regulatory liabilities	0.0	0.0
Other Regulatory Assets (Liabilities) [Member]
Regulatory assets	33.2	31.9
Regulatory Assets Noncurrent	129.2	67.3
Regulatory liabilities	3.7	17.8
Regulatory Liability Noncurrent	14.4	13.6
Other Regulatory Assets (Liabilities) [Member] | Spire Missouri [Member]
Regulatory assets	13.0	11.6
Regulatory Assets Noncurrent	113.1	50.4
Regulatory liabilities	0.0	13.5
Regulatory Liability Noncurrent	7.3	8.0
Other Regulatory Assets (Liabilities) [Member] | Spire Alabama Inc [Member]
Regulatory assets	13.1	10.6
Regulatory Assets Noncurrent	1.0	1.2
Regulatory liabilities	0.0	1.0
Regulatory Liability Noncurrent	3.6	3.6
Deferred Income Tax Charge [Member]
Regulatory Assets Noncurrent	137.8	132.9
Deferred Income Tax Charge [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	129.2	124.2
Deferred Income Tax Charge [Member] | Spire Alabama Inc [Member]
Regulatory Assets Noncurrent	2.2	2.2
Removal Costs [Member]
Regulatory Assets Noncurrent	493.7	431.9
Regulatory Liability Noncurrent	32.9	36.2
Removal Costs [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	25.2	34.9
Regulatory Liability Noncurrent	0.0	4.9
Removal Costs [Member] | Spire Alabama Inc [Member]
Regulatory Assets Noncurrent	468.5	397.0
Regulatory Liability Noncurrent	0.0	0.0
Renewable Energy Program [Member]
Regulatory Assets Noncurrent	57.2	47.6
Renewable Energy Program [Member] | Spire Missouri [Member]
Regulatory Assets Noncurrent	57.2	47.6
Renewable Energy Program [Member] | Spire Alabama Inc [Member]
Regulatory Assets Noncurrent	0.0	0.0
Estimated Deferred Taxes Due to Customers [Member]
Regulatory Liability Noncurrent	145.3	127.5
Estimated Deferred Taxes Due to Customers [Member] | Spire Missouri [Member]
Regulatory Liability Noncurrent	127.9	110.2
Estimated Deferred Taxes Due to Customers [Member] | Spire Alabama Inc [Member]
Regulatory Liability Noncurrent	$ 0.0	$ 0.0

XML

Note 15 - Regulatory Matters - Regulatory Assets Not Earning a Return (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Regulatory assets not earning a return	$ 686.3	$ 625.2
Spire Missouri [Member]
Regulatory assets not earning a return	679.9	618.7
Pension and Other Postretirement Plans Costs [Member]
Regulatory assets not earning a return	152.9	165.7
Pension and Other Postretirement Plans Costs [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	152.9	165.7
Deferred Income Tax Charge [Member]
Regulatory assets not earning a return	135.6	130.7
Deferred Income Tax Charge [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	129.2	124.2
Unamortized Purchased Gas Adjustments Asset [Member]
Regulatory assets not earning a return	275.1	242.8
Unamortized Purchased Gas Adjustments Asset [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	275.1	242.8
Other Regulatory Assets (Liabilities) [Member]
Regulatory assets not earning a return	122.7	86.0
Other Regulatory Assets (Liabilities) [Member] | Spire Missouri [Member]
Regulatory assets not earning a return	$ 122.7	$ 86.0

XML

Note 16 - Commitments and Contingencies (Details Textual) $ in Millions	12 Months Ended
	Sep. 30, 2022 USD ($)
Long-Term Purchase Commitment, Amount	$ 2,107.1
Capital Committed to Contribute to Partnership	10.0
Contributed Capital, Total	1.9
Spire Missouri [Member]
Long-Term Purchase Commitment, Amount	1,224.7
Spire Alabama Inc [Member]
Long-Term Purchase Commitment, Amount	$ 723.1

XML

Note 17 - Leases - Operating Lease Cost, Cash Flow and Noncash Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Operating lease cost, including amounts capitalized	$ 7.4	$ 7.2	$ 8.7
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities	7.3	7.2	8.5
Right-of-use assets obtained in exchange for lease liabilities	24.6	0.0	71.1
Spire Missouri [Member]
Operating lease cost, including amounts capitalized	0.5	0.4	0.5
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities	0.5	0.4	0.5
Right-of-use assets obtained in exchange for lease liabilities	1.1	0.0	2.1
Spire Alabama Inc [Member]
Operating lease cost, including amounts capitalized	2.1	2.1	3.5
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities	2.1	2.1	3.3
Right-of-use assets obtained in exchange for lease liabilities	$ 23.5	$ 0.0	$ 10.0

XML

Note 17 - Leases - Year-end Balance Sheet and Weighted-average Information About Operating Lease (Details) - USD ($) $ in Millions	Sep. 30, 2022	Sep. 30, 2021
Weighted-average remaining lease term (in years) (Year)	15 years	15 years 3 months 18 days
Weighted-average discount rate	4.10%	4.20%
Spire Missouri [Member]
Weighted-average remaining lease term (in years) (Year)	5 years 1 month 6 days	4 years 6 months
Weighted-average discount rate	2.20%	2.50%
Spire Alabama Inc [Member]
Weighted-average remaining lease term (in years) (Year)	14 years 3 months 18 days	2 years 3 months 18 days
Weighted-average discount rate	3.70%	2.20%
Deferred Charges and Other Assets, Other [Member]
Right-of-use assets	$ 73.7	$ 60.4
Deferred Charges and Other Assets, Other [Member] | Spire Missouri [Member]
Right-of-use assets	1.7	1.4
Deferred Charges and Other Assets, Other [Member] | Spire Alabama Inc [Member]
Right-of-use assets	20.2	4.8
Other Current Liabilities [Member]
Lease liabilities, current	6.5	6.5
Other Current Liabilities [Member] | Spire Missouri [Member]
Lease liabilities, current	0.4	0.3
Other Current Liabilities [Member] | Spire Alabama Inc [Member]
Lease liabilities, current	1.9	1.9
Deferred Credits and Other Liabilities, Other [Member]
Lease liabilities, noncurrent	73.7	53.7
Deferred Credits and Other Liabilities, Other [Member] | Spire Missouri [Member]
Lease liabilities, noncurrent	1.5	1.0
Deferred Credits and Other Liabilities, Other [Member] | Spire Alabama Inc [Member]
Lease liabilities, noncurrent	$ 24.6	$ 2.7

XML

Note 17 - Leases - Maturity of Operating Lease Liabilities (Details) $ in Millions	Sep. 30, 2022 USD ($)
2023	$ 6.7
2024	7.3
2025	7.4
2026	7.3
2027	7.3
Thereafter	72.8
Total undiscounted lease payments	108.8
Less present value discount	(28.6)
Total current and noncurrent lease liabilities	80.2
Spire Missouri [Member]
2023	0.4
2024	0.5
2025	0.4
2026	0.3
2027	0.2
Thereafter	0.2
Total undiscounted lease payments	2.0
Less present value discount	(0.1)
Total current and noncurrent lease liabilities	1.9
Spire Alabama Inc [Member]
2023	1.9
2024	2.1
2025	2.1
2026	2.2
2027	2.3
Thereafter	24.1
Total undiscounted lease payments	34.7
Less present value discount	(8.2)
Total current and noncurrent lease liabilities	$ 26.5