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Investments - Equity Securities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Equity securities | $ 815 | $ 831 |
Equity Securities, FV-NI, Unrealized Gain (Loss) | (165) | 161 | $ 174
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount |  | 152 |
Equity Securities, Realized Gain (Loss) on Disposal |  | 41 |
Equity Securities without Readily Determinable Fair Value, Downward Price Adjustment, Annual Amount | 67 |  |
Other Noncurrent Assets |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Equity securities | 480 | 611 |
Equity securities without readily determinable fair value | $ 233 | $ 262 |

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