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Other Financial Information
 12 Months Ended
Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Financial Information Other Financial Information
Other Current Assets

The following table presents details of other current assets in our consolidated balance sheets:
As of December 31,
20212020
(Dollars in millions)
Prepaid expenses$50 40 
Contract acquisition costs43 47 
Contract fulfillment costs31 28 
Receivable for sale of land56 — 
Other7 7 
Total other current assets$187 122 
Other Noncurrent Liabilities

The following table presents details of other noncurrent liabilities in our consolidated balance sheets:

As of December 31,
20212020
(Dollars in millions)
Unrecognized tax benefits$435 448 
Deferred revenue111 108 
Noncurrent operating lease liability63 76 
Other61 53 
Total other noncurrent liabilities$670 685