Stock-Based Compensation - Vivint Long-Term Incentive Plan Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Vivint LTIP
Stock-Based Compensation
Number of shares authorized for issuance under plan (in shares)	17,500,000	17,500,000
Number of shares available for grant under plan (in shares)	12,557,143	12,749,736
Restricted Stock Units
Stock-Based Compensation
Award vesting period	3 years
Vested in period, fair value	$ 47	$ 20	$ 10
Granted (in usd per share)	$ 51.89	$ 35.71	$ 41.26
Vested (in shares)	525,470
Restricted Stock Units \| Vivint LTIP
Stock-Based Compensation
Award vesting period	4 years
Vested in period, fair value	$ 159	$ 66
Restricted Stock Units - after Acquisition \| Vivint LTIP
Stock-Based Compensation
Granted (in usd per share)	$ 56.02	$ 35.24
Vested (in shares)	318,774
RPSUs
Stock-Based Compensation
Award vesting period	3 years
Granted (in usd per share)	$ 62.48	39.46	$ 57.41
Vested (in shares)	316,685
RPSUs \| Vivint LTIP
Stock-Based Compensation
Granted (in usd per share)	$ 66.44	$ 44.96
Vested (in shares)	0	0

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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