Information by Operating Segment (Tables)

6 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of Operating Segment Information

	Gas Utility		Gas Marketing		Other			Eliminations			Consolidated
Three Months Ended March 31, 2022
Operating Revenues:
Revenues from external customers	$	817.4	$	59.4	$	4.1		$	—		$	880.9
Intersegment revenues		—		—		14.0			(14.0	)		—
Total Operating Revenues		817.4		59.4		18.1			(14.0	)		880.9
Operating Expenses:
Natural gas		356.0		45.8		—			(9.8	)		392.0
Operation and maintenance		104.2		3.2		10.0			(4.2	)		113.2
Depreciation and amortization		56.5		0.4		2.0			—			58.9
Taxes, other than income taxes		70.3		0.4		0.9			—			71.6
Total Operating Expenses		587.0		49.8		12.9			(14.0	)		635.7
Operating Income	$	230.4	$	9.6	$	5.2		$	—		$	245.2
Net Economic Earnings (Loss)	$	169.2	$	14.4	$	(2.6	)	$	—		$	181.0

	Gas Utility		Gas Marketing			Other			Eliminations			Consolidated
Three Months Ended March 31, 2021
Operating Revenues:
Revenues from external customers	$	1,053.0	$	47.4		$	4.5		$	—		$	1,104.9
Intersegment revenues		0.1		(14.0	)		11.1			2.8			—
Total Operating Revenues		1,053.1		33.4			15.6			2.8			1,104.9
Operating Expenses:
Natural gas		619.2		(6.2	)		0.1			6.0			619.1
Operation and maintenance		104.0		7.1			11.1			(3.2	)		119.0
Depreciation and amortization		49.5		0.3			1.7			—			51.5
Taxes, other than income taxes		56.4		0.5			1.0			—			57.9
Total Operating Expenses		829.1		1.7			13.9			2.8			847.5
Operating Income	$	224.0	$	31.7		$	1.7		$	—		$	257.4
Net Economic Earnings (Loss)	$	159.7	$	39.8		$	(3.9	)	$	—		$	195.6

	Gas Utility		Gas Marketing			Other			Eliminations			Consolidated
Six Months Ended March 31, 2022
Operating Revenues:
Revenues from external customers	$	1,320.9	$	107.3		$	8.1		$	—		$	1,436.3
Intersegment revenues		—		—			26.6			(26.6	)		—
Total Operating Revenues		1,320.9		107.3			34.7			(26.6	)		1,436.3
Operating Expenses:
Natural gas		566.2		93.8			—			(18.8	)		641.2
Operation and maintenance		211.5		5.9			20.0			(7.8	)		229.6
Depreciation and amortization		111.1		0.7			4.0			—			115.8
Taxes, other than income taxes		107.3		0.4			1.5			—			109.2
Total Operating Expenses		996.1		100.8			25.5			(26.6	)		1,095.8
Operating Income	$	324.8	$	6.5		$	9.2		$	—		$	340.5
Net Economic Earnings (Loss)	$	236.4	$	14.9		$	(7.7	)	$	—		$	243.6
	Gas Utility		Gas Marketing			Other			Eliminations			Consolidated
Six Months Ended March 31, 2021
Operating Revenues:
Revenues from external customers	$	1,550.2	$	58.1		$	9.2		$	—		$	1,617.5
Intersegment revenues		1.1		0.1			23.1			(24.3	)		—
Total Operating Revenues		1,551.3		58.2			32.3			(24.3	)		1,617.5
Operating Expenses:
Natural gas		823.5		(5.5	)		0.1			(17.8	)		800.3
Operation and maintenance		207.0		10.4			19.7			(6.5	)		230.6
Depreciation and amortization		98.1		0.6			3.6			—			102.3
Taxes, other than income taxes		91.9		0.7			1.4			—			94.0
Total Operating Expenses		1,220.5		6.2			24.8			(24.3	)		1,227.2
Operating Income	$	330.8	$	52.0		$	7.5		$	—		$	390.3
Net Economic Earnings (Loss)	$	236.1	$	43.1		$	(6.7	)	$	—		$	272.5

	March 31,			September 30,			March 31,
	2022			2021			2021
Total Assets:
Gas Utility	$	7,684.1		$	7,615.4		$	7,265.0
Gas Marketing		431.1			466.1			341.0
Other		2,543.8			2,351.7			2,513.7
Eliminations		(1,257.7	)		(1,076.8	)		(1,182.9	)
Total Assets	$	9,401.3		$	9,356.4		$	8,936.8

Schedule of Reconciliation of Consolidated Net Economic Earnings to Consolidated Net Income

The following table reconciles the Company’s net economic earnings to net income.

	Three Months Ended March 31,						Six Months Ended March 31,
	2022			2021			2022		2021
Net Income	$	173.6		$	187.4		$	229.3	$	276.3
Adjustments, pre-tax:
Missouri regulatory adjustment		—			(9.0	)		—		(9.0	)
Fair value and timing adjustments		9.9			20.1			13.6		4.1
Income tax adjustments		(2.5	)		(2.9	)		0.7		1.1
Net Economic Earnings	$	181.0		$	195.6		$	243.6	$	272.5