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Commitments and Contingencies (Details) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Mar. 31, 2016 defendant mi | May 31, 2007 entity | Mar. 31, 2018 USD ($) claim mi
Loss Contingencies [Line Items] |  |  |
Casualty and non catastrophic property deductible |  |  | $ 25,000,000
Casualty and catastrophic property deductible |  |  | $ 50,000,000
Environmental |  |  |
Loss Contingencies [Line Items] |  |  |
Number of miles pertaining to Passaic River tidal reach required to be studied by EPA | mi |  |  | 17
Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Claims with potential material impact (number of claims) | claim |  |  | 1
Pending Litigation | Fuel Surcharge Antitrust Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Class action lawsuits filed against U.S.-based Class I railroads, excluding CSXT (number of entities) | entity |  | 3 |
Pending Litigation | Minimum |  |  |
Loss Contingencies [Line Items] |  |  |
Possible loss for certain legal proceedings |  |  | $ 2,000,000
Pending Litigation | Maximum |  |  |
Loss Contingencies [Line Items] |  |  |
Possible loss for certain legal proceedings |  |  | $ 115,000,000
Settled Litigation | Environmental |  |  |
Loss Contingencies [Line Items] |  |  |
Number of miles subject to remediation | mi | 8 |  |
Number of parties | defendant | 80 |  |

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