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Schedule III - Schedule of Real Estate and Depreciation (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances [1] $ 1,760    
Gross Amount of Property Carried 29,383 $ 27,936 $ 26,679
Gross Amount of Accumulated Depreciation Carried $ (13,817) (12,649) $ (11,582)
Tower Count 40,000    
Small cells on Air on Under Contract 115,000    
Fiber Miles 90,000    
Other Acquisitions [2] $ 50 32  
Communications Infrastructure Construction and Improvements 1,254 1,138  
Purchase of land interests 64 53  
Sustaining Capital Expenditures 52 52  
Other Additions [3] 105 127  
Total Additions 1,525 1,402  
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Write-down or Reserve, Amount (78) (145)  
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Deduction 0 0  
Cost of Real Estate Sold or Disposed (78) (145)  
Depreciation (1,222) (1,181)  
Amount of Accumulated Depreciation Sold or Disposed 38 105  
Other Deductions to Accumulated Depreciation 16 9  
Real Estate Period Deductions to Accumulated Depreciation $ 54 $ 114  
[1] Encumbrances are reported at face value, without contemplating the effect of deferred financing costs, discounts or premiums. Certain of the Company's debt is secured by (1) a security interest in substantially all of the applicable issuers' assignable personal property, (2) a pledge of the equity interests in each applicable issuer and (3) a security interest in the applicable issuers' leases with tenants to lease tower space (space licenses).
[2] Includes acquisitions of communications infrastructure.
[3] Predominately relates to (1) the purchase of property and equipment under finance leases and installment land purchases, (2) asset retirement obligations and (3) capitalized stock-based compensation.