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Accumulated Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2021
Stockholders' Equity Note [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
Changes in AOCL, net of tax, by component
Dollars in millionsAccumulated foreign currency translation adjustmentsAccumulated pension liability adjustmentsChanges in fair value of derivativesTotal
Balance at December 31, 2019$(315)$(654)$(18)$(987)
   Other comprehensive income (loss) adjustments before reclassifications36 (130)(21)(115)
   Amounts reclassified from AOCL
(12)20 11 19 
Net other comprehensive income (loss)24 (110)(10)(96)
Balance at December 31, 2020$(291)$(764)$(28)$(1,083)
   Other comprehensive income (loss) adjustments before reclassifications(11)168 12 169 
   Amounts reclassified from AOCL
6 15 12 33 
Net other comprehensive income (loss)(5)183 24 202 
Balance at December 31, 2021$(296)$(581)$(4)$(881)
Reclassifications out of AOCL, net of tax, by component
Dollars in millionsDecember 31, 2021December 31, 2020Affected line item on the Consolidated Statements of Operations
Accumulated foreign currency adjustments
    Reclassification of foreign currency adjustments$(6)$12 Net income attributable to noncontrolling interests and Gain on disposition of assets and investments
Tax benefit
— — Provision for income taxes
Net accumulated foreign currency
$(6)$12 
Accumulated pension liability adjustments
    Amortization of actuarial loss (a)$(32)$(24)See (a) below
Tax benefit
17 4 Provision for income taxes
Net pension and post-retirement benefits
$(15)$(20)Net of tax
Changes in fair value for derivatives
   Foreign currency hedge and interest rate swap settlements
$(16)$(13)Other non-operating income (expense)
Tax benefit
4 2 Provision for income taxes
Net changes in fair value of derivatives
$(12)$(11)Net of tax
(a)This item is included in the computation of net periodic pension cost. See Note 11 to our consolidated financial statements for further discussion.


Shares of common stock
Shares in millions Shares
Balance at December 31, 2019178.3 
Common stock issued0.8 
Balance at December 31, 2020179.1 
Common stock issued0.9 
Balance at December 31, 2021180.0 

Shares of treasury stock
Shares and dollars in millionsSharesAmount
Balance at December 31, 201936.5 $817 
Treasury stock acquired, net of ESPP shares issued1.8 47 
Balance at December 31, 202038.3 864 
Treasury stock acquired, net of ESPP shares issued1.9 79 
Balance at December 31, 202140.2 $943 

Dividends

We declared dividends totaling $63 million and $57 million in 2021 and 2020, respectively. On February 18, 2022, the Board of Directors declared a dividend of $0.12 per share, which will be paid on April 15, 2022.