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Derivative Instruments (Tables)
12 Months Ended
Dec. 31, 2017
Summary of Gross Fair Values of Individual Derivative Instruments
The following tables summarize the gross fair values of individual derivative instruments and the impact of legal rights of offset as reported in the Consolidated Balance Sheets as of December 31, 2017 and 2016.
 
Gross
amounts of
recognized
assets /
liabilities
 
Gross
amounts
offset in the
consolidated
balance sheet
 
Net amounts
of assets/
liabilities
presented
in the
consolidated
balance sheet
 
Gross amount
of collateral
received /
pledged not
offset in the
consolidated
balance sheet
 
Net amount
December 31, 2017:
 
 
 
 
 
 
 
 
 
Derivative Assets:
 
 
 
 
 
 
 
 
 
Interest rate swaps
73,826

 
627

 
73,199

 

 
73,199

Total non-VIE derivative assets
$
73,826

 
$
627

 
$
73,199

 
$

 
$
73,199

Derivative Liabilities:
 
 
 
 
 
 
 
 
 
Credit derivatives
$
566

 
$

 
$
566

 
$

 
$
566

Interest rate swaps
81,495

 
627

 
80,868

 
79,912

 
956

Futures contracts
1,348

 

 
1,348

 
1,348

 

Total non-VIE derivative liabilities
$
83,409

 
$
627

 
$
82,782

 
$
81,260

 
$
1,522

Variable Interest Entities Derivative Assets:
 
 
 
 
 
 
 
 
 
Currency swaps
54,877

 

 
54,877

 

 
54,877

Total VIE derivative assets
$
54,877

 
$

 
$
54,877

 
$

 
$
54,877

Variable Interest Entities Derivative Liabilities:
 
 
 
 
 
 
 
 
 
Interest rate swaps
$
2,205,264

 
$

 
$
2,205,264

 
$

 
$
2,205,264

Total VIE derivative liabilities
$
2,205,264

 
$

 
$
2,205,264

 
$

 
$
2,205,264

 
 
 
 
 
 
 
 
 
 
December 31, 2016:
 
 
 
 
 
 
 
 
 
Derivative Assets:
 
 
 
 
 
 
 
 
 
Interest rate swaps
$
139,045

 
$
61,839

 
$
77,206

 
$

 
$
77,206

Futures contracts
536

 

 
536

 

 
536

Total non-VIE derivative assets
$
139,581

 
$
61,839

 
$
77,742

 
$

 
$
77,742

Derivative Liabilities:
 
 
 
 
 
 
 
 
 
Credit derivatives
$
15,349

 
$

 
$
15,349

 
$

 
$
15,349

Interest rate swaps
365,776

 
61,839

 
303,937

 
156,925

 
147,012

Total non-VIE derivative liabilities
$
381,125

 
$
61,839

 
$
319,286

 
$
156,925

 
$
162,361

Variable Interest Entities Derivative Assets:
 
 
 
 
 
 
 
 
 
Currency swaps
$
80,407

 
$

 
$
80,407

 
$

 
$
80,407

Total VIE derivative assets
$
80,407

 
$

 
$
80,407

 
$

 
$
80,407

Variable Interest Entities Derivative Liabilities:
 
 
 
 
 
 
 
 
 
Interest rate swaps
$
2,078,601

 
$

 
$
2,078,601

 
$

 
$
2,078,601

Total VIE derivative liabilities
$
2,078,601

 
$

 
$
2,078,601

 
$

 
$
2,078,601

Summary of Location and Amount of Gains and Losses of Derivative Contracts

Location of gain (loss) recognized
in Consolidated Statements of
Total Comprehensive Income (Loss)
 
Amount of gain (loss) recognized in Consolidated Statement of Total Comprehensive Income (Loss) –
Year Ended December 31,
 
 
2017
 
2016
 
2015
Non-VIEs:
 
 
 
 
 
 
 
 
 
Credit derivatives
Net change in fair value of credit derivatives
 
$
16,372

 
$
20,106

 
$
41,701

Non VIE derivatives:
 
 
 
 
 
 
 
 
 
Interest rate swaps
Net gains (losses) on interest rate derivatives
 
48,870

 
(50,082
)
 
(41,177
)
Futures contracts
Net gains (losses) on interest rate derivatives
 
10,695

 
(191
)
 
(1,367
)
Total non-VIE derivatives
 
 
 
 
59,565

 
(50,273
)
 
(42,544
)
Variable Interest Entities:
 
 
 
 
 
 
 
 
 
Currency swaps
Income (loss) on variable interest entities
 
(25,530
)
 
58,990

 
103,757

Interest rate swaps
Income (loss) on variable interest entities
 
(126,664
)
 
(574,554
)
 
168,003

Total Variable Interest Entities
 
 
 
 
(152,194
)
 
(515,564
)
 
271,760

Total derivative contracts
 
 
 
 
$
(76,257
)
 
$
(545,731
)
 
$
270,917


Summary of Gross Principal Notional Outstanding for CDS Contracts
The following summarizes the gross principal notional outstanding for CDS contracts, by Ambac rating as of December 31, 2017 and 2016:
Ambac Rating
 
 
 
 
December 31,
 
2017
 
2016
AAA
 
$

 
$

AA
 
175,765

 
315,201

A
 

 
227,146

BBB (1)
 
150,125

 
127,250

Below investment grade (2)
 

 
67,783

Total
 
$
325,890

 
$
737,380

(1)
BBB internal ratings reflect bonds which are of medium grade credit quality with adequate capacity to pay interest and repay principal. Certain protective elements and margins may weaken under adverse economic conditions and changing circumstances. These bonds are more likely than higher rated bonds to exhibit unreliable protection levels over all cycles.
(2)
Below investment grade internal ratings reflect bonds which are of speculative grade credit quality with the adequacy of future margin levels for payment of interest and repayment of principal potentially adversely affected by major ongoing uncertainties or exposure to adverse conditions.
Summary of Notional Amounts of AFS's Trading Derivative Products
s of December 31, 2017 and 2016 the notional amounts of its derivatives are as follows:
 
Notional - December 31,
Type of derivative
2017
 
2016
Interest rate swaps—receive-fixed/pay-variable
$
379,497

 
$
973,130

Interest rate swaps—pay-fixed/receive-variable
1,428,264

 
1,874,678

US Treasury futures contracts—short
1,655,000

 
195,000

Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member]  
Summary of Notional Amounts of AFS's Trading Derivative Products
The notional for VIE derivatives outstanding as of December 31, 2017 and 2016 are as follows:
 
Notional - December 31,
Type of VIE derivative
2017
 
2016
Interest rate swaps—receive-fixed/pay-variable
$
1,483,491

 
$
1,352,010

Interest rate swaps—pay-fixed/receive-variable
2,479,244

 
2,300,584

Currency swaps
394,541

 
312,357

Credit derivatives
12,100

 
12,059