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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