Employee Benefit Plans - Net Periodic Benefit Cost and General Information (Details) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Net asset (liability)
Long-term liabilities	$ (23,200,000)	$ (23,800,000)
Components of net periodic benefit cost
Mandatory minimum employer contributions to pension plans	$ 0	0
Defined Contribution Plans
Maximum company match (as a percent)	4.00%
Employer contributions for the savings account	$ 20,300,000	$ 16,900,000	$ 16,900,000
Maximum percentage of employee compensation match by employer to employee stock ownership plan	50.00%
Common shares held (in shares)	0.6	0.7	0.8
Deferred Compensation - Cash
Deferred compensation plan, employer matching contribution (percent)	4.00%
Deferred compensation arrangement, compensation distribution period	10 years
Cash
Deferred Compensation - Cash
Deferred compensation, Rabbi Trust	$ 4,000,000	$ 5,700,000
Short-term Investments
Deferred Compensation - Cash
Deferred compensation, Rabbi Trust	$ 8,100,000	$ 8,100,000
Defined Benefit Plans
Weighted-average assumptions for benefit obligations
Discount rate (as a percent)	5.00%	2.50%
Rate of compensation increase (as a percent)	3.80%	3.80%
Weighted-average assumptions for net periodic benefit cost
Discount rate (as a percent)	2.60%	2.20%	3.00%
Rate of compensation increase (as a percent)	3.80%	3.80%	3.80%
Expected long-term return on plan assets (as a percent)	6.60%	6.60%	6.60%
Weighted-average cash balance interest crediting rate (as a percent)	4.00%	4.00%	4.00%
Net asset (liability)
Long-term assets	$ 0	$ 500,000
Current liabilities	(1,500,000)	(1,500,000)
Long-term liabilities	(19,600,000)	(19,800,000)
Net pension liabilities	(21,100,000)	(20,800,000)
Components of net periodic benefit cost
Service cost	2,300,000	3,000,000.0	$ 3,000,000.0
Interest cost	3,300,000	2,800,000	4,500,000
Expected return on plan assets	(9,500,000)	(9,700,000)	(9,800,000)
Amortization of unrecognized net loss	5,000,000.0	6,200,000	5,100,000
Amortization of unrecognized prior service credit	0	100,000	200,000
Settlement expense	0	1,700,000	0
Net periodic benefit cost	1,100,000	4,100,000	$ 3,000,000.0
Company's contribution to pension plan	3,500,000	1,500,000
Pension plans	13,200,000	14,300,000
Estimated future benefit payments
2023	16,000,000.0
2024	13,700,000
2025	14,000,000.0
2026	13,500,000
2027	13,000,000.0
2028-2032	55,800,000
Executive supplemental and director defined benefit pension plans
Components of net periodic benefit cost
Company's contribution to pension plan	1,500,000	$ 1,500,000
Discretionary contributions	2,000,000
Expected employer contributions in next fiscal year	$ 3,500,000