Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2025

The components of property and equipment, excluding amounts transferred to held for sale, were as follows:


(in millions)	Useful Lives	September 30, 2025		December 31, 2024

Land		$	100	$	69
Buildings and equipment	Up to 30 years	4,652		4,377
Wireless communications systems	Up to 20 years	68,770		65,778
Leasehold improvements	Up to 10 years	2,704		2,588
Capitalized software	Up to 8 years	21,041		18,566
Leased wireless devices	Up to 16 months	42		145
Construction in progress	N/A	3,402		3,377
Accumulated depreciation and amortization		(61,993)		(56,367)

Property and equipment, net		$	38,718	$	38,533

Activity in our asset retirement obligations for the nine months ended September 30, 2025, was as follows:


(in millions)	Asset Retirement Obligations

Asset retirement obligations, beginning of year	$	1,535
Fair value of liabilities acquired from the UScellular Acquisition	165
Liabilities incurred	18
Liabilities settled	(40)
Accretion expense	52



Asset retirement obligations, end of period	$	1,730

Classified on the condensed consolidated balance sheets as:

Other current liabilities	$	117
Other long-term liabilities	1,613