Income Taxes Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current Federal Tax Provision									$ 23,182,000	$ 20,877,000	$ 12,003,000
Current State Tax Provision									14,626,000	11,284,000	8,181,000
Deferred Federal Income Tax (Benefit)/Provision									(326,190,000)	43,820,000	41,975,000
Deferred State Income Tax Provision									19,808,000	2,263,000	5,383,000
Current Foreign Tax Provision									18,435,000	3,289,000	11,031,000
Deferred Foreign Income Tax (Benefit)/Provision									(11,120,000)	(7,138,000)	(2,679,000)
Foreign Income Tax (Benefit)/Provision									7,315,000	(3,849,000)	8,352,000
(Benefit from)/Provision for income taxes									$ (261,259,000)	$ 74,395,000	$ 75,894,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									35.00%	35.00%	35.00%
Tax Cuts and Jobs Act of 2017 Incomplete Accounting Change In Tax Rate Deferred Tax Liability Provisional Income Tax (Expense) Benefit									$ 394,000,000
Tax Cuts And Jobs Act of 2017 Incomplete Accounting Transition Tax For Accumulated Foreign Earnings Provisional Income Tax Expense (Benefit)									$ 22,000,000
Tax credits percentage of qualified maintenance expenditures to reduce federal income tax									50.00%
Tax credit limitation per mile on maintenance expenditures to reduce federal income tax									$ 3,500
Effective Income Tax Rate Reconciliation, United States Short Line Tax Credit, Amount										$ 28,800,000	$ 27,400,000
Foreign Tax Authority [Member]
Tax benefit from tax rate adjustment										4,300,000	9,700,000
United States [Member]
Deferred United States Tax (Benefit)/Provision									$ (268,574,000)	$ 78,244,000	$ 67,542,000
Scenario, Forecast [Member]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent								21.00%
Tax Cuts And Jobs Act of 2017 Incomplete Accounting Transition Tax Rate For Accumulated Foreign Earnings Provisional Income Tax	25.00%	20.00%	15.00%	8.00%	8.00%	8.00%	8.00%	8.00%
Effective Income Tax Rate Reconciliation, United States Short Line Tax Credit, Amount								$ 32,000,000