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Other Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2023
Other Liabilities [Abstract] |
Other Noncurrent Liabilities | The following is a summary of the components of "Other long-term liabilities" as presented on the Company's consolidated balance sheet. See also note 2.
| As of December 31,
| 2023 |  | 2022
Deferred rental revenues | $ | 1,310 |  |  | $ | 1,337 |
Deferred credits, net | 216 |  |  | 261 |
Asset retirement obligation | 355 |  |  | 327 |
Deferred income tax liabilities | 26 |  |  | 18 |
Other long-term liabilities | 7 |  |  | 7 |
Total | $ | 1,914 |  |  | $ | 1,950 |
Schedule of Change in Asset Retirement Obligation | Pursuant to its ground lease, leased facility, and certain pole attachment agreements, the Company has the obligation to perform certain asset retirement activities, including requirements upon contract termination to remove communications infrastructure or remediate the space on which its communications infrastructure is located. The changes in the carrying amount of the Company's asset retirement obligations were as follows:
| Years Ending December 31, |
| 2023 |  | 2022 |
Balance, January 1 | $ | 327 |  |  | $ | 269 |  |
Additions | 6 |  |  | 4 |  |
Accretion expense | 24 |  |  | 20 |  |
Revision in estimates | — |  |  | 37 |  | (a)
Settlements | (2) |  |  | (3) |  |
Balance, December 31 | $ | 355 |  |  | $ | 327 |  |
(a)Primarily relates to (1) increases in estimated undiscounted cash flows and (2) adjustments to estimated settlement dates for the year ended December 31, 2022, for certain asset retirement obligations and is offset against the associated asset retirement costs recorded within "Property and equipment, net" on the Company's consolidated balance sheet.
Amortization of below-market tenant leases | The estimated annual amounts related to below-market tenant leases expected to be amortized into site rental revenues for the years ending December 31, 2024 to 2028 are as follows:
| Years Ending December 31,
| 2024 |  | 2025 |  | 2026 |  | 2027 |  | 2028
Below-market tenant leases | $ | 41 |  |  | $ | 33 |  |  | $ | 25 |  |  | $ | 20 |  |  | $ | 18 |

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- Definition Tabular disclosure of the amount of amortization income expected to be recorded in succeeding fiscal years for leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition Tabular disclosure of other noncurrent liabilities. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
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