Note 8 - Pension Plans and Other Postretirement Benefits (Tables)

9 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended June 30,						Nine Months Ended June 30,
	2022			2021			2022			2021
Spire
Service cost – benefits earned during the period	$	4.8		$	5.5		$	15.6		$	16.4
Interest cost on projected benefit obligation		5.4			5.5			15.8			15.3
Expected return on plan assets		(7.7	)		(8.5	)		(24.1	)		(23.6	)
Amortization of prior service credit		(1.1	)		(0.9	)		(3.4	)		(2.4	)
Amortization of actuarial loss		2.5			3.8			9.8			11.6
Loss on lump-sum settlements		17.8			11.2			29.5			15.0
Subtotal		21.7			16.6			43.2			32.3
Regulatory adjustment		(6.9	)		1.3			2.5			19.9
Net pension cost	$	14.8		$	17.9		$	45.7		$	52.2
Spire Missouri
Service cost – benefits earned during the period	$	3.5		$	3.9		$	11.2		$	11.7
Interest cost on projected benefit obligation		3.8			3.5			10.9			10.5
Expected return on plan assets		(5.7	)		(5.7	)		(17.6	)		(16.9	)
Amortization of prior service credit		(0.5	)		(0.2	)		(1.5	)		(0.5	)
Amortization of actuarial loss		2.0			2.8			7.6			8.5
Loss on lump-sum settlements		17.3			9.1			24.1			9.1
Subtotal		20.4			13.4			34.7			22.4
Regulatory adjustment		(8.3	)		(1.4	)		1.3			13.7
Net pension cost	$	12.1		$	12.0		$	36.0		$	36.1
Spire Alabama
Service cost – benefits earned during the period	$	1.1		$	1.3		$	3.8		$	4.2
Interest cost on projected benefit obligation		1.1			1.1			3.4			3.5
Expected return on plan assets		(1.2	)		(1.4	)		(4.0	)		(4.5	)
Amortization of prior service credit		(0.6	)		(0.6	)		(1.8	)		(1.8	)
Amortization of actuarial loss		0.5			1.0			2.2			3.1
Loss on lump-sum settlements		0.5			2.1			5.4			5.9
Subtotal		1.4			3.5			9.0			10.4
Regulatory adjustment		1.1			2.5			0.5			5.6
Net pension cost	$	2.5		$	6.0		$	9.5		$	16.0

	Three Months Ended June 30,						Nine Months Ended June 30,
	2022			2021			2022			2021
Spire
Service cost – benefits earned during the period	$	1.9		$	1.7		$	5.8		$	5.4
Interest cost on accumulated postretirement benefit obligation		1.6			1.4			4.6			4.4
Expected return on plan assets		(4.3	)		(4.0	)		(12.8	)		(12.1	)
Amortization of prior service cost		0.3			0.3			0.8			0.8
Amortization of actuarial gain		(0.5	)		(0.4	)		(1.7	)		(1.2	)
Subtotal		(1.0	)		(1.0	)		(3.3	)		(2.7	)
Regulatory adjustment		(0.1	)		3.5			3.2			10.1
Net postretirement benefit (income) cost	$	(1.1	)	$	2.5		$	(0.1	)	$	7.4
Spire Missouri
Service cost – benefits earned during the period	$	1.6		$	1.5		$	4.8		$	4.6
Interest cost on accumulated postretirement benefit obligation		1.2			1.1			3.4			3.3
Expected return on plan assets		(2.9	)		(2.6	)		(8.6	)		(8.1	)
Amortization of prior service cost		0.2			0.2			0.6			0.6
Amortization of actuarial gain		(0.5	)		(0.4	)		(1.5	)		(1.1	)
Subtotal		(0.4	)		(0.2	)		(1.3	)		(0.7	)
Regulatory adjustment		0.4			3.8			4.5			11.3
Net postretirement benefit cost	$	—		$	3.6		$	3.2		$	10.6
Spire Alabama
Service cost – benefits earned during the period	$	0.3		$	0.2		$	0.9		$	0.7
Interest cost on accumulated postretirement benefit obligation		0.4			0.3			1.1			1.0
Expected return on plan assets		(1.3	)		(1.3	)		(3.9	)		(3.8	)
Amortization of prior service cost		0.1			0.1			0.2			0.2
Subtotal		(0.5	)		(0.7	)		(1.7	)		(1.9	)
Regulatory adjustment		(0.5	)		(0.4	)		(1.4	)		(1.3	)
Net postretirement benefit income	$	(1.0	)	$	(1.1	)	$	(3.1	)	$	(3.2	)