Environmental (Tables)

12 Months Ended

Dec. 31, 2020

Environmental Remediation Obligations [Abstract]

Schedule of Environmental Remediation Reserves

The components of environmental remediation liabilities are as follows:

	As of December 31,
	2020	2019
	(In $ millions)
Demerger obligations (Note 21)	29	23
Divestiture obligations (Note 21)	15	12
Active sites	12	13
US Superfund sites	11	11
Other environmental remediation liabilities	2	2
Total	69	61

Schedule of Environmental Ownership and Liability Percentages

The Company's ownership interest and environmental liability participation percentages for such liabilities, which cannot be attributed to an InfraServ partner are as follows:

	As of December 31, 2020
	Ownership	Liability	Reserves(1)
	(In percentages)		(In $ millions)
InfraServ GmbH & Co. Gendorf KG	30	10	11
InfraServ GmbH & Co. Hoechst KG	31	40	76
YNCORIS GmbH & Co. KG(2)	22	22	1

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(1)Gross reserves maintained by the respective entity.

(2)Formerly known as InfraServ GmbH & Co. Knapsack KG.