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Document And Entity Information
6 Months Ended
Jun. 30, 2016
shares
Document And Entity Information [Abstract]  
Entity Registrant Name NORFOLK SOUTHERN CORP
Entity Central Index Key 0000702165
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Document Type 10-Q
Document Period End Date Jun. 30, 2016
Document Fiscal Year Focus 2016
Document Fiscal Period Focus (Q1,Q2,Q3,FY) Q2
Amendment Flag false
Entity Common Stock, Shares Outstanding 293,549,767