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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2024

Asset Retirement Obligation [Abstract]

Note 12 Asset Retirement Obligations

UScellular is subject to asset retirement obligations associated with certain cell sites, land, switching offices, retail stores and office locations. These obligations are included in Other deferred liabilities and credits in the Consolidated Balance Sheet.

In 2024 and 2023, UScellular performed a review of the assumptions and estimated future costs related to asset retirement obligations. The results of the review and other changes in asset retirement obligations during 2024 and 2023, were as follows:


	2024		2023
(Dollars in millions)
Balance at beginning of year	$	367	$	346
Additional liabilities accrued	5		8
Revisions in estimated cash outflows	9		(3)
Disposition of assets	(3)		(3)
Accretion expense	19		19

Balance at end of year	$	397	$	367