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Business Combinations - Schedule of Preliminary Fair Value of Identifiable Assets and Assumed Liabilities (Parenthetical) (Detail) $ in Millions	Dec. 31, 2020 USD ($)
Automotive and Discrete Group (ADG) and Microcontrollers And Digital Ics Group [Member]
Business Acquisition [Line Items]
Goodwill estimated tax deductible	$ 45

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- Definition

Goodwill estimated tax deductible.

+ References

No definition available.

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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.

+ References

No definition available.

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- Details

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