v3.8.0.1
Acquisition and Divestitures Acquisition and Divestitures (Details)
number in Thousands, $ in Millions
 3 Months Ended 4 Months Ended 9 Months Ended
Oct. 30, 2017
USD ($)
Jun. 28, 2017
USD ($)
Jan. 01, 2017
USD ($)
Dec. 31, 2017
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2017
USD ($)
Sep. 30, 2016
USD ($)
Nov. 08, 2017
Dec. 31, 2016
USD ($)
Acquisition and Divestitures                    
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest [1]             $ 314 [2] $ 242    
Goodwill         $ 861 [3] $ 861 [3] 861 [3]     $ 117
Business Acquisition, Revenue               1,100    
Business Acquisition, Net Earnings               277    
Payments for (Proceeds from) Other Investing Activities   $ 28         (46) [2] 4 [2]    
(Gain) loss on asset disposals and impairments   $ 25         25 [1] (3) [1]    
Proceeds from Lines of Credit [2]             319 761    
North Dakota Gathering and Processing Assets [Member]                    
Acquisition and Divestitures                    
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment             31      
Business Combination, Consideration Transferred     $ 705              
Goodwill, Purchase Accounting Adjustments             4      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles             (32)      
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory             (3)      
Inventory         2 2 2      
Property, plant and equipment         571 571 571      
Intangibles [4]         122 122 122      
Goodwill [5]         10 10 10      
Total purchase price         705 705 $ 705      
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life             10 years 7 months 6 days      
Amortization of Intangible Assets             $ 9      
Business Acquisition, Revenue             307      
Business Acquisition, Net Earnings             42      
Subsequent Event | Anacortes Logistics Assets [Member]                    
Acquisition and Divestitures                    
Business Combination, Consideration Transferred       $ 445            
Storage Capacity                 3,900  
Proceeds from Lines of Credit       400            
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable       $ 45            
Subsequent Event | Anacortes Marine Terminal [Member]                    
Acquisition and Divestitures                    
Terminal Throughput Capacity, Barrels Per Day                 73  
Subsequent Event | Anacortes Rail Facility Acquisition [Member]                    
Acquisition and Divestitures                    
Terminal Throughput Capacity, Barrels Per Day                 4  
Pipeline Throughput Capacity, Barrels per Day                 111  
WNRL Merger                    
Acquisition and Divestitures                    
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months         9 9 9      
Finite-Lived Intangible Assets, Accumulated Amortization         3 3 3      
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed         9   9      
Refining and Marketing Revenue           834        
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest           15        
Finite-Lived Intangible Assets, Gross         $ 130 $ 130 130      
Business Acquisition, Revenue             3,148 2,515    
Business Acquisition, Net Earnings             $ 349 $ 245    
WNRL Merger | Subsequent Event                    
Acquisition and Divestitures                    
Finite-Lived Intangible Assets, Amortization Expense, Year Two $ 9                  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 9                  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 36                  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 9                  
Inventory 11                  
Property, plant and equipment [6] 1,301                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles 130                  
Goodwill $ 734                  
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 15 years                  
Equity Issued in Business Combination, Fair Value Disclosure $ 1,700                  
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest 1,781                  
Terminalling and Transportation | WNRL Merger | Subsequent Event                    
Acquisition and Divestitures                    
Goodwill 357                  
Wholesale Segment [Member] | WNRL Merger | Subsequent Event                    
Acquisition and Divestitures                    
Goodwill 272                  
Other Affiliates [Member] | WNRL Merger | Subsequent Event                    
Acquisition and Divestitures                    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles $ 130                  
[1] Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.
[2] Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.
[3] (a)Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.
[4] The intangibles consist of customer contracts with a weighted average amortization period of 10.6 years. Amortization of intangible assets for the nine months ended September 30, 2017 was $9 million.
[5] We evaluated several factors that contributed to the amount of goodwill presented above. These factors include the geographic proximity of the acquired assets to existing assets owned by the Partnership along with the improved overall basin logistics efficiencies we can leverage.
[6] (a)Estimated useful lives ranging from 3 to 22 years have been assumed based on the preliminary valuation.