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Summary of Significant Accounting Policies - Activity in the Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 140	$ 121	$ 145	$ 133
Acquired balance from Vivint Smart Home	0	0	0	22
Provision for credit losses	58	45	133	80
Write-offs	(86)	(66)	(178)	(144)
Recoveries collected	9	12	19	21
Other	6	8	8	8
Ending balance	$ 127	$ 120	$ 127	$ 120

X

- Definition

Accounts Receivable, Allowance for Credit Loss Acquired in Acquisition

+ References

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- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Amount of increase in allowance for credit loss on accounts receivable, from recovery.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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