Revenue (Tables)

12 Months Ended

Sep. 30, 2019

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.

	2019
Spire
Gas Utility:
Residential	$	1,267.3
Commercial & industrial		433.9
Transportation		112.1
Off-system & other incentive		41.9
Other customer revenue		22.5
Total revenue from contracts with customers		1,877.7
Changes in accrued revenue under alternative revenue programs		(16.9	)
Total Gas Utility operating revenues		1,860.8
Gas Marketing:
Revenue from contracts with retail customers		83.7
Revenue from wholesale derivative contracts		—
Total Gas Marketing operating revenues		83.7
Other		21.5
Total before eliminations		1,966.0
Intersegment eliminations (see Note 14, Information by Operating Segment)		(13.6	)
Total Operating Revenues	$	1,952.4
Spire Missouri
Residential	$	945.9
Commercial & industrial		283.8
Transportation		33.1
Off-system & other incentive		41.9
Total revenue from contracts with customers		1,304.7
Changes in accrued revenue under alternative revenue programs		(12.9	)
Total Operating Revenues	$	1,291.8
Spire Alabama
Residential	$	265.3
Commercial & industrial		113.5
Transportation		69.5
Other customer revenue		20.7
Total revenue from contracts with customers		469.0
Changes in accrued revenue under alternative revenue programs		(3.5	)
Total Operating Revenues	$	465.5

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.”

	2019		2018		2017
Spire	$	99.3	$	98.4	$	83.1
Spire Missouri		71.1		68.9		60.0
Spire Alabama		23.7		25.4		19.5