Annual report pursuant to Section 13 and 15(d)

Redeemable Preferred Units (Details)

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Redeemable Preferred Units (Details) - USD ($)
$ in Millions
 1 Months Ended
Nov. 09, 2020
Jun. 11, 2020
Apr. 30, 2021
Senior Sustainability-Linked Notes      
Redeemable Preferred Units      
Repayment of redeemable preferred units     $ 74.4
Concophillips.      
Redeemable Preferred Units      
Redeemable preferred units issued for purchase of asset (in shares)   7,500  
Redeemable preferred units issued for purchase of asset   $ 72.0  
Capital call $ 1.9    
Redemption of preferred units 193    
Preferred Units, face value   $ 75.0  
Solaris LLC | Concophillips. | Capital Unit, Class A      
Redeemable Preferred Units      
Units issued in exchange of preferred units 192,981