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Note 13 - Pension and Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

		*Pension Plan and SERP*								*Postretirement Plan*
		*For the Three Months Ended September 30,*
		*2022*				*2021*				*2022*				*2021*
Interest cost		$	2.5			$	2.7			$	—			$	—
Expected return on plan assets			(4.6	)			(8.2	)		$	—				(0.1	)
Amortization of prior service cost (credit)			—				—			$	—				—
Amortization of net actuarial loss			0.9				1.0			$	—				0.1
Net periodic (benefit) cost		$	(1.2	)		$	(4.5	)		$	—			$	—
Employer contributions, net		$	0.2			$	0.2			$	0.4			$	1.3

		*Pension Plan and SERP*								*Postretirement Plan*
		*For the Nine Months Ended September 30,*
		*2022*				*2021*				*2022*				*2021*
Interest cost		$	8.8			$	8.3			$	0.2			$	0.1
Expected return on plan assets			(20.4	)			(24.6	)			(0.2	)			(0.2	)
Amortization of prior service cost (credit)			0.1				0.1				—				(0.1	)
Amortization of net actuarial loss			2.1				2.9				0.2				0.2
Net periodic (benefit) cost		$	(9.4	)		$	(13.3	)		$	0.2			$	—
Employer contributions, net		$	0.6			$	0.6			$	1.1			$	1.7