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Acquisitions and Equity Method Investments - KaTech and Verdient (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 916	$ 902
KaTech And Verdient
Business Acquisition [Line Items]
Goodwill	36
Tangible assets	$ 35

X

- Definition

The amount of tangible assets recognized as of the acquisition date.

+ References

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- Definition

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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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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