v2.4.0.8
Document And Entity Information (USD $)
12 Months Ended
Dec. 31, 2013
Feb. 21, 2014
Jun. 28, 2013
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Entity Registrant Name MAGELLAN MIDSTREAM PARTNERS LP    
Entity Central Index Key 0001126975    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Entity Common Stock, Shares Outstanding   227,068,257  
Entity Public Float     $ 12,320,730,416
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Well-known Seasoned Issuer Yes