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Equity Securities - (Summary of Investments in Equity Securities, by Accounting Classification) (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Investments Debt And Equity Securities [Abstract]
Marketable equity securities	$ 392	$ 657
Non-marketable equity securities	511	441
Equity method investments	66	78
Equity Securities	$ 969	$ 1,176

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- Definition

The total of marketable equity securities, non-marketable equity securities and equity method investments.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Amount of investment in equity security without readily determinable fair value.

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