Revenue (Tables)

3 Months Ended

Dec. 31, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Revenue Disaggregated by Source and Customer Type

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

	Three Months Ended December 31,
	2024			2023
Spire
Gas Utility:
Residential	$	411.5		$	492.8
Commercial and industrial		133.7			157.9
Transportation		34.6			32.6
Off-system and other incentive		11.5			6.4
Other customer revenue		0.8			5.5
Total revenue from contracts with customers		592.1			695.2
Changes in accrued revenue under alternative revenue programs		21.4			20.0
Total Gas Utility operating revenues		613.5			715.2
Gas Marketing		33.0			36.3
Midstream		33.5			14.9
Other		4.7			4.1
Total before eliminations		684.7			770.5
Intersegment eliminations (see Note 10, Information by Operating Segment)		(15.6	)		(13.9	)
Total Operating Revenues	$	669.1		$	756.6

Spire Missouri
Residential	$	321.8	$	388.8
Commercial and industrial		93.8		110.2
Transportation		9.4		9.0
Off-system and other incentive		9.9		4.1
Other customer revenue		2.8		2.5
Total revenue from contracts with customers		437.7		514.6
Changes in accrued revenue under alternative revenue programs		19.8		20.8
Total Operating Revenues	$	457.5	$	535.4

	Three Months Ended December 31,
	2024			2023
Spire Alabama
Residential	$	72.4		$	84.4
Commercial and industrial		28.9			34.7
Transportation		22.5			20.8
Off-system and other incentive		1.6			2.3
Other customer revenue		(3.2	)		0.9
Total revenue from contracts with customers		122.2			143.1
Changes in accrued revenue under alternative revenue programs		(1.8	)		(1.0	)
Total Operating Revenues	$	120.4		$	142.1

Schedule of Gross Receipts Taxes Associated Revenue

	Three Months Ended December 31,
	2024		2023
Spire	$	26.8	$	31.1
Spire Missouri		19.5		22.5
Spire Alabama		5.7		6.9