v3.25.1
Income Taxes Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Income Tax Disclosure [Line Items]      
Effective Income Tax Rate Reconciliation, Percent 20.30% 25.80%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00%  
Deferred income taxes $ 1,069.5   $ 1,075.6
Accrued Liabilities [Member]      
Income Tax Disclosure [Line Items]      
Taxes Payable 26.7   16.2
Railcars on Lease [Member]      
Income Tax Disclosure [Line Items]      
Deferred income taxes $ 1,200.0   $ 1,100.0