Company Restructuring - Restructuring Programs (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges	$ 170	$ 253	$ 39
Future work environment
Restructuring Cost and Reserve [Line Items]
Expected program charges	110
Restructuring and related charges	(131)	0
Change in estimated program costs in 2021	37
Remaining program charges	16
Transformative Growth
Restructuring Cost and Reserve [Line Items]
Expected program charges	290
Restructuring and related charges	6	$ (238)
Change in estimated program costs in 2021	(52)
Remaining program charges	$ 6

Restructuring And Related Costs, Increase (Decrease) In Expected Cost Remaining

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- Definition

Amount expected to be recognized in earnings for the specified restructuring cost.

+ References

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Amount of expected cost remaining for the specified restructuring cost.

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- Definition

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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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