Separate Accounts and Annuity Product Guarantees (Tables)
12 Months Ended
Dec. 31, 2017
Market Volatility Assumptions
Market volatility assumptions vary by fund type and grade from a current volatility number to long-term assumptions over one year as shown below:
 
 
2017
 
2016
Fund index type
 
Current volatility
 
Long-term forward volatility
 
Current volatility
 
Long-term forward volatility
Large cap
 
13.4
%
 
18.0
%
 
16.3
%
 
18.1
%
Bond
 
3.4

 
3.9

 
3.4

 
3.9

International
 
13.7

 
21.2

 
16.8

 
21.4

Small cap
 
17.4

 
21.5

 
20.3

 
21.5

Schedule of Guaranteed Minimum Benefits
Guaranteed minimum benefits for the respective years ended December 31 are summarized as follows (note that the amounts listed are not mutually exclusive, as many products contain multiple guarantees):
 
2017
 
2016
 
Account value
 
Net amount at risk
 
Weighted age (years)
 
Account value
 
Net amount at risk
 
Weighted age (years)
GMDB:
 
 
 
 
 
 
 
 
 
 
 
Return of premium
$
2,108,179

 
1,143

 
64
 
1,816,268

 
7,444

 
63
Ratchet and return of premium
620,716

 
3,720

 
66
 
620,999

 
20,606

 
66
Reset
81,771

 
475

 
77
 
84,191

 
692

 
76
Total
$
2,810,666

 
5,338

 
 
 
2,521,458

 
28,742

 
 
GMIB:
 
 
 
 
 
 
 
 
 
 
 
Return of premium
$
6,632

 
113

 
69
 
7,717

 
133

 
68
Ratchet and rollup
116,275

 
16,403

 
66
 
128,150

 
25,900

 
65
Total
$
122,907

 
16,516

 
 
 
135,867

 
26,033

 
 
GMAB:
 
 
 
 
 
 
 
 
 
 
 
Five years
$
17,173

 
5

 
70
 
17,899

 
61

 
70
Target date retirement-7 year
42,606

 
12

 
65
 
44,589

 
69

 
64
Target date retirement-10 year
16,187

 
37

 
65
 
19,140

 
331

 
64
Target date with management levers
380,541

 
1,346

 
65
 
385,249

 
8,501

 
64
Total
$
456,507

 
1,400

 
 
 
466,877

 
8,962

 
 
GMWB:
 
 
 
 
 
 
 
 
 
 
 
No living benefit
$
61,262

 

 
68
 
61,926

 

 
68
Life benefit with optional reset
70,125

 
3,884

 
73
 
72,366

 
6,887

 
72
Life benefit with 8% rollup
27,283

 
4,380

 
72
 
28,562

 
6,286

 
70
Life benefit with management levers
1,461,444

 
214,731

 
62
 
1,386,689

 
265,514

 
61
Total
$
1,620,114

 
222,995

 
 
 
1,549,543

 
278,687

 
 
Variable Annuity Account Balances Invested In Separate Account
At December 31, variable annuity account balances were invested in separate account funds with the following investment objectives. Balances are presented at fair value:
Investment type
 
2017
 
2016
Bond
 
$
306,145

 
310,976

Domestic equity
 
1,211,424

 
1,179,744

International equity
 
63,486

 
61,096

Specialty
 
694,010

 
665,294

Money market
 
24,621

 
37,065

Other
 
776

 
1,401

Total
 
$
2,300,462

 
2,255,576

Summary of Liabilities for Variable Contract Guarantees
The following table summarizes the liabilities for variable contract guarantees that are reflected in the general account and shown in Account balances and future policy benefit reserves on the Balance Sheets:
 
GMDB
 
GMIB
 
GMAB
 
GMWB
 
Totals
Balance as of December 31, 2015
$
2,239

 
4,023

 
27,579

 
147,290

 
181,131

Incurred guaranteed benefits
528

 
(246
)
 
(8,845
)
 
(2,659
)
 
(11,222
)
Paid guaranteed benefits
(782
)
 
(560
)
 
(2,140
)
 

 
(3,482
)
Balance as of December 31, 2016
1,985

 
3,217

 
16,594

 
144,631

 
166,427

Incurred guaranteed benefits
260

 
(185
)
 
(6,063
)
 
(16,686
)
 
(22,674
)
Paid guaranteed benefits
(207
)
 
(1,288
)
 
(13
)
 

 
(1,508
)
Balance as of December 31, 2017
$
2,038

 
1,744

 
10,518

 
127,945

 
142,245