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Accumulated Other Comprehensive Loss
 6 Months Ended
Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss

The tables below summarize changes in accumulated other comprehensive loss recorded on our consolidated balance sheets by component for the six months ended June 30, 2019:
 
Pension Plans
 
Foreign Currency Translation Adjustment and Other
 
Total
 
(Dollars in millions)
Balance at December 31, 2018
$
5

 
(176
)
 
(171
)
Other comprehensive loss, net of tax
—

 
(5
)
 
(5
)
Net other comprehensive loss
—

 
(5
)
 
(5
)
Balance at June 30, 2019
$
5

 
(181
)
 
(176
)

The table below summarizes changes in accumulated other comprehensive income recorded on our consolidated balance sheets by component for the six months ended June 30, 2018:
 
Foreign Currency Translation Adjustment and Other
 
Total
 
(Dollars in millions)
Balance at December 31, 2017
$
18

 
18

Other comprehensive loss before reclassifications, net of tax
(163
)
 
(163
)
Amounts reclassified from accumulated other comprehensive loss
6

 
6

Net other comprehensive loss
(157
)
 
(157
)
Balance at June 30, 2018
$
(139
)
 
(139
)