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Investment in Affiliates and Related-Party Transactions - Schedule of Future Payments Due under Operating Leases (Details)
$ in Millions
Dec. 31, 2022
USD ($)
Related Party Transaction [Line Items]  
2023 $ 71
2024 62
2025 55
2026 41
2027 35
Thereafter 1,122
Total 1,386
Corporate Joint Venture | Conrail  
Related Party Transaction [Line Items]  
2023 31
2024 31
2025 31
2026 31
2027 31
Thereafter 44
Total $ 199