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Railcar Leasing and Management Services Group - Future contractual minimum rental revenues on leases (Details) - Railcar Leasing and Management Services Group [Member]
$ in Millions
Sep. 30, 2023
USD ($)
Future contractual minimum rental revenue  
Remaining three months of 2023 $ 176.3 [1]
2024 622.6 [1]
2025 506.0 [1]
2026 387.4 [1]
2027 282.2 [1]
Thereafter 434.3 [1]
Total 2,408.8 [1]
Railroad Transportation Equipment  
Future contractual minimum rental revenue  
Remaining three months of 2023 173.7
2024 615.8
2025 501.4
2026 384.6
2027 281.3
Thereafter 434.0
Total $ 2,390.8
[1] Total contractual minimum rental revenues on operating leases relates to our wholly-owned and partially-owned subsidiaries and sub-lease rental revenues associated with the Leasing Group's operating lease obligations.