Loss per share

The computation of basic loss per share (“LPS”) is based on the weighted average number of shares outstanding during the period. Diluted LPS includes the effect of the assumed conversion of potentially dilutive instruments.

The components of the numerator for the calculation of basic and diluted LPS are as follows:



	Successor				Predecessor
(In $ millions)	Year ended December 31, 2019		Period from July 2, 2018 through December 31, 2018		Period from January 1, 2018 through July 1, 2018		Year ended December 31, 2017
Net loss attributable to the parent	(1,219	)	(602	)	(3,881	)	(2,973	)
Less: Allocation to participating securities	—		—		—		—
Net loss available to stockholders	(1,219	)	(602	)	(3,881	)	(2,973	)
Effect of dilution	—		—		—		—
Diluted net loss available to stockholders	(1,219	)	(602	)	(3,881	)	(2,973	)

The components of the denominator for the calculation of basic and diluted LPS are as follows:



	Successor		Predecessor
(In $ millions)	Year ended December 31, 2019	Period from July 2, 2018 through December 31, 2018	Period from January 1, 2018 through July 1, 2018	Year ended December 31, 2017
Basic loss per share:
Weighted average number of common shares outstanding	100	100	504	505
Diluted loss per share:
Effect of dilution	—	—	—	—
Weighted average number of common shares outstanding adjusted for the effects of dilution	100	100	504	505

The basic and diluted loss per share are as follows:



	Successor				Predecessor
(In $)	Year ended December 31, 2019		Period from July 2, 2018 through December 31, 2018		Period from January 1, 2018 through July 1, 2018		Year ended December 31, 2017
Basic loss per share	(12.18	)	(6.02	)	(7.71	)	(5.89	)
Diluted loss per share	(12.18	)	(6.02	)	(7.71	)	(5.89	)