Pension Plans - Non-Qualified Plans (Details) - Nonqualified Plan [Member] $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, type	Pension Plan [Member]
Defined benefit plan, funding status	us-gaap:UnfundedPlanMember
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]
Plan with projected benefit obligation in excess of plan assets, accumulated benefit obligation	$ 14.2
Plan with projected benefit obligation in excess of plan assets, projected benefit obligation	$ 14.2