Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Lease income	$ 254	$ 307	$ 780	$ 978
Percent of operating revenue (as a percent)	7.00%	7.00%	7.00%	7.00%
Revenue recognized	$ 44	$ 47	$ 391	$ 494
Contract liabilities					$ 715	$ 841
Remaining performance obligation	7,200		7,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 913		$ 913
Remaining performance obligation, satisfaction period	3 months		3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 2,400		$ 2,400
Remaining performance obligation, satisfaction period	1 year		1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation	$ 3,900		$ 3,900
Remaining performance obligation, satisfaction period	3 years		3 years
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract term (in years)			1 year
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract term (in years)			5 years
Weighted Average | Mass Market Customers
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Length of customer life (in months)			36 months
Weighted Average | Business Customers
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Length of customer life (in months)			33 months