XML 63 R50.htm IDEA: XBRL DOCUMENT v3.21.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
May 01, 2021
Apr. 21, 2021
Apr. 01, 2020
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Subsequent Event [Line Items]                  
Distributions paid per limited partner unit (in dollars per share)       $ 0.4600 $ 0.4600 $ 0.4600 $ 0.4600 $ 0.4600 $ 0.4600
Payments to acquire assets       $ 1       $ 7  
Shell Pipeline Company L P | Triton West LLC (“Triton”) | Scenario, Forecast                  
Subsequent Event [Line Items]                  
Payments to acquire assets $ 10                
Zydeco Pipeline Company LLC (“Zydeco”) | Shell Pipeline Company L P | Triton West LLC (“Triton”) | Scenario, Forecast                  
Subsequent Event [Line Items]                  
Interest transferred 7.50%                
Preferred Units                  
Subsequent Event [Line Items]                  
Distributions paid per limited partner unit (in dollars per share)     $ 0.2363            
Subsequent Event | Common Units                  
Subsequent Event [Line Items]                  
Distributions paid per limited partner unit (in dollars per share)   $ 0.4600              
Subsequent Event | Preferred Units                  
Subsequent Event [Line Items]                  
Distributions paid per limited partner unit (in dollars per share)   $ 0.2363