XML 58 R67.htm IDEA: XBRL DOCUMENT v2.4.1.9
Acquisitions 2013 TLLP Acquisition of the Northwest Products System (Details) (USD $)
In Millions, unless otherwise specified
 0 Months Ended 12 Months Ended
Jun. 01, 2013
Jun. 19, 2013
Dec. 31, 2014
Business Acquisition      
Number of assets 6tso_NumberOfAssets    
Purchase Price Consideration $ 2,420us-gaap_BusinessCombinationConsiderationTransferred1    
Northwest Products System      
Business Acquisition      
Date of acquisition     Jun. 19, 2013
Purchase Price Consideration   $ 355us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis
= tso_NorthwestProductSystemMember		  
Northwest Products System | Refined product terminal      
Business Acquisition      
Number of assets     3tso_NumberOfAssets
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= tso_ProductTerminalsMember
/ us-gaap_SignificantAcquisitionsAndDisposalsByTransactionAxis
= tso_NorthwestProductSystemMember