Summary of Significant Accounting Policies - Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($)
Goodwill [Roll Forward]
Balance beginning of period	$ 5,079
Impairment	(15)
Foreign currency translation adjustments	(4)
Balance end of period	5,060
Texas
Goodwill [Roll Forward]
Balance beginning of period	643
Impairment	0
Foreign currency translation adjustments	0
Balance end of period	643
East
Goodwill [Roll Forward]
Balance beginning of period	721
Impairment	0
Foreign currency translation adjustments	0
Balance end of period	721
West/Services/Other
Goodwill [Roll Forward]
Balance beginning of period	221
Impairment	(15)
Foreign currency translation adjustments	(4)
Balance end of period	202
Vivint Smart Home
Goodwill [Roll Forward]
Balance beginning of period	3,494
Impairment	0
Foreign currency translation adjustments	0
Balance end of period	$ 3,494