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Rail Route Network, Distance, Partial Interest

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The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.

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Business Combinations - Narrative (Details) $ in Millions	12 Months Ended			36 Months Ended
Business Combinations - Narrative (Details) $ in Millions	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2024 mi	Jun. 01, 2022 USD ($) mi
Business Acquisition [Line Items]
Number of rail route miles \| mi					20,000
Pan-Am
Business Acquisition [Line Items]
Number of rail route miles \| mi						1,200
Number of partial interests in rail route miles (more than) \| mi						600
Business combination, consideration transferred			$ 600
Business combination, consideration transferred, equity interests issued and issuable			422
Cash paid for acquisition			178
Deposit paid to acquire business classified as other investing activities			$ 30
Properties acquired						$ 600
Acquisition related costs	$ 22	$ 10		$ 32