Earnings (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Earnings (Loss) Per Share

	Three Months Ended June 30,			Six Months Ended June 30,
	2018	2017		2018		2017
	(In $ millions, except share data)
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	344	239		709		422
Earnings (loss) from discontinued operations	—	(8	)	(2	)	(8	)
Net earnings (loss)	344	231		707		414
Weighted average shares - basic	135,589,717	138,619,721		135,752,179		139,626,199
Incremental shares attributable to equity awards	719,441	409,704		747,569		396,357
Weighted average shares - diluted	136,309,158	139,029,425		136,499,748		140,022,556