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Other revenues (Tables)
 12 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
Other revenues
Other revenues comprise the following items: 
(In US$ millions)
2019
 
2018
 
2017
Early termination revenue
41.0

 
204.9

 
95.9

Related party other revenues
1.8

 
4.6

 
7.1

Total
42.8

 
209.5

 
103.0