Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2025

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


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

Land		$	100	$	69
Buildings and equipment	Up to 30 years	4,521		4,377
Wireless communications systems	Up to 20 years	70,653		65,778
Leasehold improvements	Up to 10 years	2,750		2,588
Capitalized software	Up to 3 years	21,762		18,566
Leased wireless devices	Up to 16 months	30		145
Construction in progress	N/A	2,329		3,377
Accumulated depreciation and amortization		(63,812)		(56,367)

Property and equipment, net		$	38,333	$	38,533

Activity in our asset retirement obligations for the years ended December 31, 2025 and 2024, were as follows:


(in millions)	Year Ended December 31, 2025		Year Ended December 31, 2024

Asset retirement obligations, beginning of year	$	1,535	$	1,716
Fair value of liabilities acquired from the UScellular Acquisition	182		—
Liabilities incurred	35		21
Liabilities settled	(46)		(307)
Accretion expense	73		69
Changes in estimated cash flows	—		36


Asset retirement obligations, end of period	$	1,779	$	1,535

Classified on the consolidated balance sheets as:

Other current liabilities	$	114	$	109
Other long-term liabilities	1,665		1,426