XML 43 R30.htm IDEA: XBRL DOCUMENT v3.21.1
Nature of Operations and Significant Accounting Policies (Details)
Mar. 31, 2021
state
mi
Nov. 30, 2020
mi
Revenue from External Customer [Line Items]    
Total number of rail route miles 19,500  
Number of states rail network serves | state 23  
Acquisition of Pan-Am | Acquisition of Pan-Am    
Revenue from External Customer [Line Items]    
Total number of rail route miles   1,200
Number of partial interests in rail route miles (more than)   600