Restructuring and Other Charges - Summary (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Restructuring and Related Activities [Abstract]
Layoff costs	$ 0	$ 22
Adjustments to (reversals of) previously recorded layoff reserves	1	(2)
Pension, Other post-retirement benefits and Deferred Compensation - net settlements	3	0
Net loss related to divestitures of assets and businesses	4	16
Other	1	3
Restructuring and other charges	$ 9	$ 39

Gain (Loss) On Divestitures Of Assets And Business, Included In Restructuring Charges

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- Definition

Reversal Of Previous Severance Costs

+ References

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

+ References

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- Definition

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

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