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Fair Value Measurements and Financial Instruments - Additional Information (Detail) € in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2023 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 EUR (€) | Mar. 31, 2022 USD ($)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Carrying amount of our investments without readily determinable fair values | $ 796,000,000 |  | $ 796,000,000 |  |  |  | $ 804,000,000 |  |
Investments without readily determinable fair values, impairment loss | 0 |  |  |  |  |  |  |  |
Cumulative adjustments due to observable price changes | 165,000,000 |  | 165,000,000 |  |  |  |  |  |
Cumulative adjustments due to impairment charges | 88,000,000 |  | 88,000,000 |  |  |  |  |  |
Initial value of the excluded component |  |  |  |  |  |  |  |  | $ 1,000,000,000
Exchange gains and losses from the conversion of foreign currency denominated as debt | 0 | $ 0 | 0 | $ 0 |  |  |  |  |
Derivative liability fair value of collateral | 1,500,000,000 |  | 1,500,000,000 |  |  |  | 2,300,000,000 |  |
Derivative asset fair value of collateral | $ 0 |  | 0 |  |  |  | $ 0 |  |
TracFone Wireless, Inc. |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Contingent consideration payment |  |  | $ 102,000,000 |  |  |  |  |  |
Scenario, Forecast | Interest Expense |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Excluded component estimated to be amortized into interest expense |  |  |  |  | $ 108,000,000 |  |  |  |
Euro Denominated Debt | Net Investment Hedges |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |
Notional amount | € |  |  |  |  |  | € 750 |  | € 750 |

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