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Additional Financial Information (Tables)
12 Months Ended
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Income Statement Information
The following tables provide additional financial information related to our consolidated financial statements:

Income Statement Information
(dollars in millions)
Years Ended December 31,202120202019
Depreciation expense$14,119 $14,275 $14,371 
Interest costs on debt balances5,148 4,632 5,221 
Net amortization of debt discount178 170 165 
Capitalized interest costs(1,841)(555)(656)
Advertising expense3,394 3,107 3,071 
(dollars in millions)
Years Ended December 31,202120202019
Other income (expense), net
Interest income$48 $65 $121 
Other components of net periodic benefit (cost) income3,785 (425)627 
Early debt extinguishment costs(3,541)(129)(3,604)
Other, net20 (50)(44)
$312 $(539)$(2,900)
Balance Sheet Information
Balance Sheet Information
(dollars in millions)
At December 31,20212020
Prepaid expenses and other
Prepaid taxes$1,093 $1,200 
Deferred contract costs2,432 2,472 
Restricted cash1,094 1,195 
Other prepaid expense and other2,287 1,843 
$6,906 $6,710 
Accounts payable and accrued liabilities
Accounts payable$8,040 $6,667 
Accrued expenses9,123 6,050 
Accrued vacation, salaries and wages4,485 5,057 
Interest payable1,561 1,452 
Taxes payable1,624 1,432 
$24,833 $20,658 
Other current liabilities
Dividends payable$2,709 $2,618 
Contract liability6,053 4,843 
Other2,263 2,167 
$11,025 $9,628 
Cash Flow Information
Cash Flow Information
(dollars in millions)
Years Ended December 31,202120202019
Cash Paid
Interest, net of amounts capitalized$3,435 $4,420 $4,714 
Income taxes, net of amounts refunded3,040 2,725 3,583 
Other, net Cash Flows from Operating Activities
Changes in device payment plan agreement non-current receivables$(2,438)$558 $23 
Early debt extinguishment costs3,541 129 3,604 
Loss on spectrum licenses223 1,195 — 
Gain on disposition of Media business(1,051)— — 
Other, net(368)898 (134)
$(93)$2,780 $3,493 
Other, net Cash Flows from Financing Activities
Net debt related costs(1)
$(2,309)$(1,055)$(1,797)
Other, net(1,523)(1,657)(1,120)
$(3,832)$(2,712)$(2,917)
(1) These costs include the premium paid for the early extinguishment of debt, fees paid in connection with exchange and tender offers, and settlements of associated instruments.