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Deferred Policy Acquisition Costs, Deferred Sales Inducements and Liability for Lifetime Income Benefit Riders | 12 Months Ended
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Dec. 31, 2020
Insurance [Abstract] |
Deferred Policy Acquisition Costs, Deferred Sales Inducements and Liability for Lifetime Income Benefit Riders | Deferred Policy Acquisition Costs, Deferred Sales Inducements and Liability for Lifetime Income Benefit Riders Policy acquisition costs deferred and amortized are as follows:
| December 31,
| 2020 |  | 2019 |  | 2018
| (Dollars in thousands)
Balance at beginning of year | $ | 2,923,454 |  |  | $ | 3,535,838 |  |  | $ | 2,714,523 |
Costs deferred during the year: |  |  |  |  |
Commissions | 251,429 |  |  | 419,165 |  |  | 384,432 |
Policy issue costs | 3,725 |  |  | 3,351 |  |  | 3,790 |
Amortization: |  |  |  |  |
Amortization | (2,769) |  |  | (280,699) |  |  | (358,563) |
Impact of unlocking | (646,785) |  |  | 192,982 |  |  | 30,572 |
Effect of net unrealized gains/losses | (483,242) |  |  | (947,183) |  |  | 761,084 |
Balance at end of year | $ | 2,045,812 |  |  | $ | 2,923,454 |  |  | $ | 3,535,838 |
Sales inducements deferred and amortized are as follows:
| December 31,
| 2020 |  | 2019 |  | 2018
| (Dollars in thousands)
Balance at beginning of year | $ | 1,966,723 |  |  | $ | 2,516,721 |  |  | $ | 2,001,892 |
Costs deferred during the year | 93,610 |  |  | 177,941 |  |  | 179,465 |
Amortization: |  |  |  |  |
Amortization | (10,063) |  |  | (193,292) |  |  | (243,666) |
Impact of unlocking | (428,101) |  |  | 104,707 |  |  | 21,465 |
Effect of net unrealized gains/losses | (293,312) |  |  | (639,354) |  |  | 557,565 |
Balance at end of year | $ | 1,328,857 |  |  | $ | 1,966,723 |  |  | $ | 2,516,721 |
The following table presents a rollforward of the liability for lifetime income benefit riders (net of coinsurance ceded):
| December 31,
| 2020 |  | 2019 |  | 2018
| (Dollars in thousands)
Balance at beginning of year | $ | 1,303,451 |  |  | $ | 808,167 |  |  | $ | 704,441 |
Benefit expense accrual | 311,211 |  |  | 179,901 |  |  | 157,333 |
Impact of unlocking | 285,825 |  |  | 315,383 |  |  | (53,607) |
Claim payments | — |  |  | — |  |  | — |
Balance at end of year | $ | 1,900,487 |  |  | $ | 1,303,451 |  |  | $ | 808,167 |
We periodically update the key assumptions used in the calculation of amortization of deferred policy acquisition costs and deferred sales inducements retrospectively through an unlocking process when estimates of current or future gross profits/margins (including the impact of realized investment gains and losses) to be realized from a group of products are revised. In addition, we periodically update the assumptions used in determining the liability for lifetime income benefit riders. We review these assumptions quarterly and as a result of these reviews, we made updates to assumptions in 2020, 2019 and 2018. In addition, we implemented an enhanced actuarial valuation system during 2019, and as a result, our 2019 assumption updates include model refinements resulting from the implementation. The most significant assumption updates made in 2020 were to investment spread assumptions, including the net investment earned rate and crediting rates on policies, as well as updates to lapse rate and partial withdrawal assumptions. Due to the current economic and low interest rate environments, we updated our assumption for aggregate investment spread to 2.40% in the near-term increasing to 2.60% over an eight-year reversion period and our assumption for crediting/discount rate to 1.60% increasing to 2.10% over an eight-year reversion period. Prior to these assumption updates, our long-term assumption for aggregate investment spread was steady at 2.60%, with a near term crediting/discount rate of 1.90% increasing to 2.90% over a 20 year reversion period. The assumption update to decrease aggregate investment spread resulted in lower expected future gross profits as compared to previous estimates and a decrease in the balances of deferred policy acquisition costs and deferred sales inducements. The decrease in the crediting rate, which is used as the discount rate in the calculation of the liability for lifetime income benefit riders, resulted in an increase in the liability for lifetime income benefit riders. We updated lapse rate and partial withdrawal assumptions based on actual historical experience. For certain annuity products without a lifetime income benefit rider, lapse rate and partial withdrawal assumptions were increased while for certain annuity products with a lifetime income benefit rider, lapse rate and partial withdrawal assumptions were decreased. The net impact of the updates to lapse rate and partial withdrawal assumptions resulted in lower expected future gross profits as compared to previous estimates and a decrease in the balances of deferred policy acquisition costs and deferred sales inducements. The net impact of the updates to lapse rate and partial withdrawal assumptions resulted in an increase in the liability for lifetime income benefit riders due to a greater amount of expected benefit payments in excess of account values. The most significant assumption updates made during 2019 were to lapse and utilization assumptions. We had credible lapse and utilization data based upon a comprehensive experience study spanning over 10 years on our products with lifetime income benefit riders and have experienced lapse rates that are lower than previously estimated. Lower lapse assumptions resulted in an expectation that more policyholders will turn on their lifetime income benefit than previously anticipated which results in a greater amount of benefit payments in excess of account value and the need for a greater liability for lifetime income benefit riders. The decrease in lapse rate assumptions also resulted in policies being in force for a longer period of time and an increase in expected gross profits as compared to previous estimates. The higher level of expected future gross profits resulted in an increase in the balances of deferred policy acquisition costs and deferred sales inducements. Our historical experience also indicated that the ultimate utilization of certain lifetime income benefit riders was expected to be less than our prior assumptions and the timing of utilization of lifetime income benefit riders is later than in our prior assumptions. We reduced our ultimate utilization assumptions for fee riders from 75% to 60% and for no-fee riders from 37.5% to 30%, for policies issued in 2014 and prior years. The net effect of the utilization assumption revisions resulted in a decrease in the liability for lifetime income benefit riders and partially offset the increase in the reserve for lifetime income benefit riders from the change in lapse assumptions. In addition, we updated our assumptions regarding future crediting/discount rates. We assumed a 3.80% U.S. Treasury rate with a 20 year mean revision period. Our assumption for aggregate investment spread was 2.60% which translated to an ultimate discount rate of 2.90%. While the aggregate spread of 2.60% did not change from prior estimates, our estimates of the profitability of individual cohorts changed with the use of an aggregate portfolio yield across all cohorts. This assumption update resulted in a change in the allocation of profitability by cohort, which caused a reduction in the deferred policy acquisition costs and deferred sales inducements assets and partially offset the increase in the deferred policy acquisition costs and deferred sales inducements assets from the change in lapse assumptions. The most significant updates made during 2018 as a result of our quarterly reviews were account balance true-ups which were favorable to us due to stronger index credits than we assumed due to strong equity market performance and adjustments to generally decrease lapse rate assumptions to reflect better persistency experienced than assumed. The favorable impact of the account balance true-ups and lapse rate assumption changes was partially offset by updates to lower our future investment spread assumptions primarily due to an increase in the cost of money we had been experiencing. The 2018 updates to the liability for lifetime income benefit riders were consistent with the updates used in the calculation of amortization of deferred policy acquisition costs and deferred sales inducements described above. The 2018 updates were primarily attributable to account balance true-ups and future investment spread assumptions. The impact of the account balance true-ups and future investment spread changes was partially offset by the lapse rate assumptions changes described above.

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