Share based compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Share-based compensation expense

The share-based compensation expense for our share options and Restricted Stock Unit ("RSU") plans in the Consolidated Statements of Operations are as follows:

	Successor			Predecessor
(In $ millions)	Year ended December 31, 2020	Year ended December 31, 2019	Period from July 2, 2018 through December 31, 2018	Period from January 1, 2018 through July 1, 2018
Share-based compensation expense (1)	8	5	—	9
Total share-based compensation expense	8	5	—	9

(1)The $9 million expense for the period from January 1, 2018 through July 1, 2018 included a charge of $6 million for schemes cancelled on emergence from the Previous Chapter 11 Proceedings. This was classified within reorganization items.