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Other Liabilities
 12 Months Ended
Dec. 31, 2024
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,
 20242023
Deferred rental revenues$1,356 $1,310 
Deferred credits, net174 216 
Asset retirement obligation 395 355 
Deferred income tax liabilities 31 26 
Other long-term liabilities29 7 
Total$1,985 $1,914 
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,
 20242023
Balance, January 1$355 $327 
Additions14 6 
Accretion expense27 24 
Settlements(1)(2)
Balance, December 31$395 $355 

As of December 31, 2024, the estimated undiscounted future cash outlay for asset retirement obligations was approximately $1.2 billion. See note 2.
For the years ended December 31, 2024, 2023 and 2022, the Company recognized $42 million, $45 million and $49 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, 2025 to 2029 are as follows:
Years Ending December 31,
20252026202720282029
Below-market tenant leases$34 $25 $20 $18 $16 
Other accrued liabilities
Other accrued liabilities included accrued payroll and other accrued compensation of $148 million and $140 million as of December 31, 2024 and 2023, respectively.