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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss) by component were as follows:
 
 
Benefits
Liability,
Net of Tax
 
Cumulative
Foreign
Currency
Exchange
 
Total
Balances at December 31, 2016
 
$
29

 
$
(150
)
 
$
(121
)
Other comprehensive income (loss) before reclassifications
 
12

 
114

 
126

Amounts reclassified from accumulated other comprehensive income (loss)
 
2

 
—

 
2

Net other comprehensive income attributable to Westlake Chemical Corporation
 
14

 
114

 
128

Balances at December 31, 2017
 
43

 
(36
)
 
7

Other comprehensive income (loss) before reclassifications
 
(14
)
 
(57
)
 
(71
)
Amounts reclassified from accumulated other comprehensive income (loss)
 
(11
)
 
—

 
(11
)
Reclassification of certain tax effects to retained earnings (1)
 
9

 
4

 
13

Net other comprehensive loss attributable to Westlake Chemical Corporation
 
(16
)
 
(53
)
 
(69
)
Balances at December 31, 2018
 
$
27

 
$
(89
)
 
$
(62
)

______________________________
(1)
The Company reclassified certain income tax effects to retained earnings upon adoption of ASU No. 2018-02. See Note 14 for additional information.
The following table provides the details of the amounts reclassified from accumulated other comprehensive income (loss) into net income in the consolidated statements of operations:
Details about Accumulated Other
   Comprehensive Income (Loss) Components
 
Location of Reclassification
(Income (Expense)) in
Consolidated Statements
of Operations
 
Year Ended December 31,
 
2018
 
2017
 
2016
Amortization of pension and other post-retirement net loss
 
(1)
 
$
—

 
$
(2
)
 
$
(2
)
Pension settlement gain
 
(1)
 
14

 
—

 
—

Income tax benefit (provision) on pension and other post-retirement benefits
 
Provision for (benefit from) income taxes
 
(3
)
 
—

 
1

 
 
 
 
11

 
(2
)
 
(1
)
Realized gain on available-for-sale investments
 
Other income, net
 
—

 
—

 
54

Income tax provision on realized gain on available-for-sale investments
 
Provision for (benefit from) income taxes
 
—

 
—

 
(2
)
 
 
 
 
—

 
—

 
52

Total reclassifications for the period
 
 
 
$
11

 
$
(2
)
 
$
51


______________________________
(1)
These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost and reflected in other income, net in the consolidated statements of operations. See Note 11 for additional information on the pension settlement gain.