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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 |  |  |

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