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Other Liabilities | 12 Months Ended
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Dec. 31, 2023
Other Liabilities [Abstract] |
Other Liabilities | Other Liabilities Other long-term 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 |
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. As of December 31, 2023, the estimated undiscounted future cash outlay for asset retirement obligations was approximately $1.2 billion. See note 2. For the years ended December 31, 2023, 2022 and 2021, the Company recognized $45 million, $49 million and $54 million, respectively, in "Site rental revenues" related to the 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 |
Other accrued liabilities Other accrued liabilities included accrued payroll and other accrued compensation of $140 million and $210 million as of December 31, 2023 and 2022, respectively.

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- Definition The entire disclosure for other liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20,24) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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