Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 670,200,000
Foreign tax credit	800,000	$ 800,000
Unrecognized Tax Benefits, Increase Resulting from Foreign Currency Translation	$ 9,000,000.0
Effective Income Tax Rate Reconciliation, Percent	22.60%	23.00%	23.90%
Deferred Tax Liabilities
Book/tax basis difference due to depreciation	$ 1,439,400,000	$ 1,327,900,000
Right-of-use assets	33,700,000	41,300,000
Investments in affiliated companies	3,800,000	4,500,000
Lease accounting (other than leveraged)	17,400,000	18,000,000.0
Intangible amortization	1,700,000	1,500,000
Other	5,300,000	4,900,000
Total deferred tax liabilities	1,501,300,000	1,398,100,000
Deferred Tax Assets
Lease liability	37,900,000	44,400,000
Federal net operating loss	140,800,000	82,600,000
Foreign tax credit	800,000	800,000
Valuation allowance on foreign tax credit	800,000	800,000
State net operating loss	43,300,000	37,400,000
Federal interest limitation carryforward	50,500,000	72,500,000
Valuation on state net operating loss	(26,900,000)	(20,400,000)
State interest limitation carryforward	7,700,000	11,400,000
Foreign net operating loss	2,100,000	4,400,000
Accruals not currently deductible for tax purposes	37,800,000	32,300,000
Allowance for losses	1,200,000	1,300,000
Pension and post-retirement benefits	1,900,000	2,100,000
Other	9,300,000	2,800,000
Total deferred tax assets	305,600,000	270,800,000
Net deferred tax liabilities	1,195,700,000	1,127,300,000
Gross liability for unrecognized tax benefits
Ending balance	9,100,000
Provision for Income Taxes, Equity Method Investment	$ 39,700,000	$ 25,500,000	$ 25,700,000