Master Trust - Summary of Master Trust Investments Measured at Fair Value (Details) - Rail - Master Trust - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
EBP, Master Trust [Line Items]
Investments, at fair value	$ 21,737,110	$ 17,558,746
Measured at NAV
EBP, Master Trust [Line Items]
Investments, at fair value	10,071,355	8,473,155
Common Collective Trusts, Stocks \| Measured at NAV
EBP, Master Trust [Line Items]
Investments, at fair value	8,052,916	6,770,665
Unfunded Commitments	0	0
Common Collective Trusts, Short-Term Investments \| Measured at NAV
EBP, Master Trust [Line Items]
Investments, at fair value	856,792	776,283
Unfunded Commitments	0	0
Common Collective Trusts, U.S. Government Securities \| Measured at NAV
EBP, Master Trust [Line Items]
Investments, at fair value	1,061,721	926,207
Unfunded Commitments	0	$ 0
Common Collective Trusts, Core Fixed Income Bonds \| Measured at NAV
EBP, Master Trust [Line Items]
Investments, at fair value	99,926
Unfunded Commitments	$ 0

Fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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Namespace Prefix:	us-gaap-ebp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant