Revenue (Tables)

9 Months Ended

Jun. 30, 2020

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 June 30,						Nine Months Ended June 30,
	2020			2019			2020			2019
Spire
Gas Utility:
Residential	$	208.1		$	188.1		$	1,048.4		$	1,133.0
Commercial & industrial		57.5			68.5			336.8			384.7
Transportation		26.1			25.6			89.6			86.4
Off-system & other incentive		9.3			7.7			28.0			34.1
Other customer revenue		5.0			8.8			10.6			32.4
Total revenue from contracts with customers		306.0			298.7			1,513.4			1,670.6
Changes in accrued revenue under alternative revenue programs		—			2.9			2.3			(17.0	)
Total Gas Utility operating revenues		306.0			301.6			1,515.7			1,653.6
Gas Marketing:
Revenue from contracts with retail customers		11.6			18.3			77.2			69.6
Revenue from wholesale derivative contracts		—			—			—			—
Total Gas Marketing operating revenues		11.6			18.3			77.2			69.6
Other		15.4			4.6			41.2			14.3
Total before eliminations		333.0			324.5			1,634.1			1,737.5
Intersegment eliminations (see Note 9, Information by Operating Segment)		(11.9	)		(3.2	)		(30.6	)		(10.7	)
Total Operating Revenues	$	321.1		$	321.3		$	1,603.5		$	1,726.8

Spire Missouri
Residential	$	153.2		$	133.4	$	760.2	$	846.4
Commercial & industrial		35.9			39.6		215.9		257.9
Transportation		7.4			7.1		26.1		26.0
Off-system & other incentive		7.6			7.7		26.3		34.1
Other customer revenue		3.2			3.2		4.6		10.0
Total revenue from contracts with customers		207.3			191.0		1,033.1		1,174.4
Changes in accrued revenue under alternative revenue programs		(3.4	)		0.4		2.3		(13.2	)
Total Operating Revenues	$	203.9		$	191.4	$	1,035.4	$	1,161.2

Spire Alabama
Residential	$	44.7	$	45.7	$	239.5		$	238.0
Commercial & industrial		17.1		21.6		94.6			97.1
Transportation		16.2		16.3		55.7			53.3
Off-system & other incentive		1.7		—		1.7			—
Other customer revenue		0.4		4.9		3.7			19.8
Total revenue from contracts with customers		80.1		88.5		395.2			408.2
Changes in accrued revenue under alternative revenue programs		1.1		2.3		(2.3	)		(3.5	)
Total Operating Revenues	$	81.2	$	90.8	$	392.9		$	404.7

Schedule of Gross Receipts Taxes

The expense amounts (shown in the table below) are reported gross in the “Taxes, other than income taxes” line in the statements of income, and corresponding revenues are reported in “Operating Revenues.”

	Three Months Ended June 30,				Nine Months Ended June 30,
	2020		2019		2020		2019
Spire	$	17.2	$	18.2	$	79.7	$	87.6
Spire Missouri		12.1		12.5		55.5		63.1
Spire Alabama		4.2		4.8		20.3		20.7