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Additional Financial Information
12 Months Ended
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Additional Financial Information
Note 15. Additional Financial Information
The following tables provide additional financial information related to our consolidated financial statements:

Income Statement Information
(dollars in millions)
Years Ended December 31,202220212020
Depreciation expense$14,592 $14,119 $14,275 
Interest costs on debt balances5,429 5,148 4,632 
Net amortization of debt discount214 178 170 
Capitalized interest costs(2,030)(1,841)(555)
Advertising expense3,556 3,394 3,107 
(dollars in millions)
Years Ended December 31,202220212020
Other income (expense), net
Interest income$146 $48 $65 
Other components of net periodic benefit (cost) income2,386 3,785 (425)
Net debt extinguishment losses(1,077)(3,541)(129)
Other, net(82)20 (50)
$1,373 $312 $(539)
Balance Sheet Information
(dollars in millions)
At December 31,20222021
Prepaid expenses and other
Prepaid taxes$167 $1,093 
Deferred contract costs2,629 2,432 
Collateral payments related to derivative contracts2,286 21 
Restricted cash1,343 1,094 
Other prepaid expense and other1,933 2,266 
$8,358 $6,906 
Accounts payable and accrued liabilities
Accounts payable$8,750 $8,040 
Accrued expenses7,824 9,123 
Accrued vacation, salaries and wages3,950 4,485 
Interest payable1,577 1,561 
Taxes payable1,876 1,624 
$23,977 $24,833 
Other current liabilities
Dividends payable$2,764 $2,709 
Contract liability6,583 6,053 
Other2,750 2,263 
$12,097 $11,025 

As of December 31, 2022 and 2021, Property, plant and equipment includes approximately $6.0 billion and $5.9 billion of additions that have not yet been paid.
Cash Flow Information
(dollars in millions)
Years Ended December 31,202220212020
Cash Paid
Interest, net of amounts capitalized$3,316 $3,435 $4,420 
Income taxes, net of amounts refunded2,736 3,040 2,725 
Other, net Cash Flows from Operating Activities
Changes in device payment plan agreement non-current receivables$(4,919)$(2,438)$558 
Net debt extinguishment losses1,077 3,541 129 
Loss on spectrum licenses 223 1,195 
Gain on disposition of Media business (1,051)— 
Other, net64 (368)898 
$(3,778)$(93)$2,780 
Other, net Cash Flows from Financing Activities
Net debt related costs(1)
$(366)$(2,309)$(1,055)
Other, net(1,706)(1,523)(1,648)
$(2,072)$(3,832)$(2,703)
(1) These costs include the premiums paid for the early extinguishment of debt, fees paid in connection with exchange and tender offers, and settlements of associated instruments.