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Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Tables)
12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]  
Reconciliation of cash, cash equivalents and restricted cash The following table provides a reconciliation of Cash and cash equivalents and restricted cash reported in the Consolidated Balance Sheet to the total of the amounts in the Consolidated Statement of Cash Flows.
December 31,20242023
(Dollars in millions)  
Cash and cash equivalents$144 $150 
Restricted cash included in Other current assets15 29 
Cash, cash equivalents and restricted cash in the statement of cash flows$159 $179 
Implementation costs Implementation costs related to UScellular's cloud-hosted arrangements, which are recorded in Prepaid expenses and Other assets and deferred charges in the Consolidated Balance Sheet, were as follows:
December 31,20242023
(Dollars in millions)
Implementation costs, gross$97 $89 
Accumulated amortization(86)(65)
Implementation costs, net$11 $24