Retirement Plans and Other Postretirement Benefits - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) plan	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2006 USD ($)
Defined Benefit Plan Disclosure
Number of supplemental defined benefit plans frozen | plan		2
Pension cost (credit)		$ 9.2	$ 10.0	$ 9.3
Health reimbursement account, amount		1.2			$ 7.3
Health reimbursement accounts funding		$ 0.0	0.1	0.1
Equity securities
Defined Benefit Plan Disclosure
Defined benefit pension plan to approximate allocation		35.00%
Fixed income funds
Defined Benefit Plan Disclosure
Defined benefit pension plan to approximate allocation		65.00%
Defined Benefit Plan
Defined Benefit Plan Disclosure
Expected amortization of gain (loss) next year		$ (0.4)	(0.3)	(0.3)
Defined Benefit Plan | Scenario, Plan | Subsequent Event
Defined Benefit Plan Disclosure
Expected amortization of gain (loss) next year	$ 0.3
Supplemental Defined Benefit Plans
Defined Benefit Plan Disclosure
Expected amortization of gain (loss) next year		$ (0.4)	$ (0.3)	$ (0.3)
Supplemental Defined Benefit Plans | Scenario, Plan | Subsequent Event
Defined Benefit Plan Disclosure
Expected amortization of gain (loss) next year	$ 0.4
Qualified Plan
Defined Benefit Plan Disclosure
Number of retirement plans | plan		2
Qualified Plan | 401(k) plan | Defined Benefit Plan
Defined Benefit Plan Disclosure
Frozen supplemental defined benefit plans, vesting percentage		100.00%
Employer matching contribution as percent of employees' gross pay		3.00%
Percentage of employer match		5.00%
Vesting period for Company contributions		5 years
Nonqualified Plan
Defined Benefit Plan Disclosure
Number of retirement plans | plan		3