Revenue (Tables)

3 Months Ended

Dec. 31, 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 December 31,
	2020			2019
Spire
Gas Utility:
Residential	$	349.9		$	368.4
Commercial & industrial		103.0			122.5
Transportation		32.2			31.0
Off-system & other incentive		9.3			9.4
Other customer revenue		2.2			2.4
Total revenue from contracts with customers		496.6			533.7
Changes in accrued revenue under alternative revenue programs		1.6			(3.0	)
Total Gas Utility operating revenues		498.2			530.7
Gas Marketing:
Revenue from contracts with retail customers		19.4			32.3
Revenue from wholesale derivative contracts		5.4			—
Total Gas Marketing operating revenues		24.8			32.3
Other		16.7			11.1
Total before eliminations		539.7			574.1
Intersegment eliminations (see Note 9, Information by Operating Segment)		(27.1	)		(7.2	)
Total Operating Revenues	$	512.6		$	566.9

Spire Missouri
Residential	$	263.0	$	275.9
Commercial & industrial		69.9		80.8
Transportation		9.0		9.0
Off-system & other incentive		7.4		9.4
Other customer revenue		2.9		0.5
Total revenue from contracts with customers		352.2		375.6
Changes in accrued revenue under alternative revenue programs		3.3		(1.6	)
Total Operating Revenues	$	355.5	$	374.0

Spire Alabama
Residential	$	69.2		$	74.3
Commercial & industrial		24.3			31.3
Transportation		20.5			19.6
Off-system & other incentive		2.0			—
Other customer revenue		(1.9	)		1.6
Total revenue from contracts with customers		114.1			126.8
Changes in accrued revenue under alternative revenue programs		(0.5	)		(0.6	)
Total Operating Revenues	$	113.6		$	126.2

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 December 31,
	2020		2019
Spire	$	21.7	$	24.6
Spire Missouri		15.2		17.2
Spire Alabama		5.3		6.2