Retirement Plans - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Employer contributions	$ 9,500,000	$ 10,600,000	$ 10,600,000
Company contributions	0	$ 0	$ 0
Impact of .5% increase on post retirement benefit obligation	(3,300,000)
Impact of .5% increase on post retirement cost	(200,000)
Impact of .5% decrease on post retirement benefit obligation	3,800,000
Impact of .5% decrease on post retirement cost	400,000
Impact of .5% increase on assumed long-term rate of return on plan assets	200,000
Impact of .5% decrease on assumed long-term rate of return on plan assets	$ 200,000
Nonqualified Plan
Defined Contribution Plan Disclosure [Line Items]
Employee matching contribution, percent of employee deferral	6.00%
Employer matching contribution, percent of match	3.00%
Scenario One | Qualified Plan
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match	100.00%
Employer matching contribution, percent of employees' gross pay	3.00%
Scenario Two | Qualified Plan
Defined Contribution Plan Disclosure [Line Items]
Employer matching contribution, percent of match	50.00%
Employer matching contribution, percent of employees' gross pay	2.00%