Revenue Recognition - Additional Information, Contract Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Jan. 01, 2024	Dec. 31, 2023	Jan. 01, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue recognized from prior year contract liability	$ 14	$ 10	$ 162	$ 159
Contract liabilities	$ 246		$ 246		$ 269	$ 269	$ 343
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract term			1 year
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract term			5 years
Weighted Average | Mass Markets Customers, Average Contract Life
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Length of customer life			50 months
Weighted Average | Business Customer, Average Contract Life
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Length of customer life			35 months