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Loss per share (Tables)
 6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of calculation of basic and diluted EPS
The components of the numerator for the calculation of basic and diluted LPS were as follows:
(In $ millions)Six months ended June 30, 2021Six months ended June 30, 2020
Net loss attributable to shareholder(605)(1,745)
Effect of dilution— — 
Diluted net loss available to shareholders(605)(1,745)

The components of the denominator for the calculation of basic and diluted LPS were as follows:
 (In millions)Six months ended June 30, 2021Six months ended June 30, 2020
Basic loss per share:
Weighted average number of common shares outstanding100 100
Diluted loss per share:
Effect of dilution— — 
Weighted average number of common shares outstanding adjusted for the effects of dilution100 100 

The basic and diluted loss per share were as follows:
(In $)Six months ended June 30, 2021Six months ended June 30, 2020
Basic loss per share(6.03)(17.40)
Diluted loss per share(6.03)(17.40)