Exit and Disposal Costs	12 Months Ended
Dec. 31, 2020
Restructuring and Related Activities [Abstract]
Exit and Disposal Costs	13. Exit and Disposal CostsWe incurred employee termination costs of $27 million in 2020 and $38 million in 2018 related to cost reduction initiatives and asset sales in 2018. All charges were based on amounts incurred under ongoing severance arrangements or other statutory requirements, plus amounts earned under enhanced benefit arrangements. Payments for termination costs were $20 million in 2020 (2019: $4 million; 2018: $40 million)

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-URI http://asc.fasb.org/topic&trid=2175745

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