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Share Repurchase Transactions and Other Comprehensive Loss (Tables)
 3 Months Ended
Mar. 31, 2021
Federal Home Loan Banks [Abstract]  
Components of Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are as follows (dollars in millions):
 
 
 
Unrealized

Gains on

Available-

for-Sale

Securities
 
 
Foreign

Currency

Translation

Adjustments
 
 
Defined

Benefit

Plans
 
 
Change

in Fair

Value of

Derivative

Instruments
 
 
Total
 
Balances at December 31, 2020
 
$
25
 
 
$
(271
) 
 
$
(220
) 
 
$
(36
) 
 
$
(502
) 
Unrealized losses on
available-for-sale
securities, net of $2 income tax benefit
 
 
(9
) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(9
) 
Foreign currency translation adjustments, net of $1 of income tax
 
 
 
 
 
 
7
 
 
 
 
 
 
 
 
 
 
 
7
 
Change in fair value of derivative instruments
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
 
 
 
1
 
Expense reclassified into operations from other comprehensive income, net of $2 and $2 income tax benefits, respectively
 
 
 
 
 
 
 
 
 
 
5
 
 
 
7
 
 
 
12
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balances at March 31, 2021
 
$
16
 
 
$
(264
) 
 
$
(215
) 
 
$
(28
) 
 
$
(491
)