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Reorganization and Business Transformation - Costs Incurred For Reorganization Plan (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
2020 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expense accruals	$ 38
Cash payments	(20)
Restructuring reserve. ending balance	18
VSP
Restructuring Cost and Reserve [Line Items]
Expense accruals	23
Cash payments	(7)
Restructuring reserve. ending balance	16
Workforce Reduction Plan | Employee severance and other employee-related costs
Restructuring Cost and Reserve [Line Items]
Expense accruals	9
Cash payments	(7)
Restructuring reserve. ending balance	2
Workforce Reduction Plan | Facilities lease related costs, outside service, legal and other associated costs
Restructuring Cost and Reserve [Line Items]
Expense accruals	6
Cash payments	(6)
Restructuring reserve. ending balance	$ 0

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- Definition

Payments For Restructuring, Net Of Advance Payments

+ References

No definition available.

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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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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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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