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Comprehensive Income
 3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Comprehensive Income
4. COMPREHENSIVE INCOME
The following tables detail the changes in the balances of each component of accumulated other comprehensive income for the affected periods:
 
 
Unrealized Gains
(Losses) on
Available for
Sale Securities (1)
 
Amortization of
Postretirement
Benefit (1)
 
Gain (Loss) on
Foreign Currency
Translation (1)
 
Credit Risk Changes of Fair Value Option Liabilities (1) (2)
 
Total
Three Months Ended March 31, 2018:
 
 
 
 
 
 
 
 
 
 
Beginning Balance
 
$
30,755

 
$
10,640

 
$
(93,634
)
 
$
—

 
$
(52,239
)
Adjustment to opening balance, net of taxes (3)
 
—

 
—

 
—

 
(2,900
)
 
(2,900
)
Adjusted balance, beginning of period
 
30,755

 
10,640

 
(93,634
)
 
(2,900
)
 
(55,139
)
Other comprehensive income (loss) before reclassifications
 
125,159

 
(556
)
 
32,056

 
—

 
156,659

Amounts reclassified from accumulated other comprehensive income (loss)
 
(2,855
)
 
(303
)
 
—

 
1,114

 
(2,044
)
Net current period other comprehensive income (loss)
 
122,304

 
(859
)
 
32,056

 
1,114

 
154,615

Balance at March 31, 2018
 
$
153,059

 
$
9,781

 
$
(61,578
)
 
$
(1,786
)
 
$
99,476

 
 
 
 
 
 
 
 
 
 
 
Three Months Ended March 31, 2017:
 
 
 
 
 
 
 
 
 
 
Beginning Balance
 
$
118,863

 
$
9,367

 
$
(167,220
)
 
$
—

 
$
(38,990
)
Other comprehensive income (loss) before reclassifications
 
12,500

 
2,625

 
12,593

 
—

 
27,718

Amounts reclassified from accumulated other comprehensive income (loss)
 
8,835

 
(338
)
 
—

 
—

 
8,497

Net current period other comprehensive income (loss)
 
21,335

 
2,287

 
12,593

 
—

 
36,215

Balance at March 31, 2017
 
$
140,198

 
$
11,654

 
$
(154,627
)
 
$
—

 
$
(2,775
)
(1)
All amounts are net of tax and noncontrolling interest. Amounts in parentheses indicate reductions to Accumulated Other Comprehensive Income.
(2)
Represents the changes in fair value attributable to instrument-specific credit risk of liabilities for which the fair value option is elected.
(3)
Beginning in 2018, Credit risk changes of fair value option liabilities are reflected as a component of Accumulated Other Comprehensive Income pursuant to the adoption of ASU 2016-01. See Note 2 to the Consolidated Financial Statements included in this Form 10-Q for further information regarding this change.
The following table details the significant amounts reclassified from each component of accumulated other comprehensive income, shown in the above rollforward tables, for the affected periods:
Details about Accumulated Other
Comprehensive Income Components
 
Amount Reclassified from Accumulated
Other Comprehensive Income (1)
 
Affected Line Item in the
Consolidated Statement of
Total Comprehensive Income (Loss)
 
Three Months Ended March 31,
 
 
2018
 
2017
 
Unrealized Gains (Losses) on Available-for-Sale Securities
 
 
 
 
 
 
 
 
$
(4,563
)
 
$
8,835

 
Net realized investment gains (losses) and other-than-temporary impairment losses
 
 
1,708

 
—

 
Provision for income taxes
 
 
$
(2,855
)
 
$
8,835

 
Net of tax and noncontrolling interest 
Amortization of Postretirement Benefit
 
 
 
 
 
 
Prior service cost
 
$
(241
)
 
$
(241
)
 
Other income (2)
Actuarial (losses)
 
(62
)
 
(97
)
 
Other income (2)
 
 
(303
)
 
(338
)
 
Total before tax
 
 
—

 
—

 
Provision for income taxes
 
 
(303
)
 
(338
)
 
Net of tax and noncontrolling interest
Credit risk changes of fair value option liabilities
 
 
 
 
 
 
 
 
$
1,344

 
$
—

 
Credit Risk Changes of Fair Value Option Liabilities
 
 
(230
)
 
—

 
Provision for income taxes
 
 
$
1,114

 
$
—

 
Net of tax and noncontrolling interest
Total reclassifications for the period
 
$
(2,044
)
 
$
8,497

 
Net of tax and noncontrolling interest 
(1)
Amounts in parentheses indicate reductions to Accumulated Other Comprehensive Income with corresponding increases to the affected line items in the Consolidated Statement of Total Comprehensive Income.
(2)
These accumulated other comprehensive income components are included in the computation of net periodic benefit cost.