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Deferred Acquisition Costs | 9 Months Ended
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Sep. 30, 2022
Deferred Acquisition Costs |
Deferred Acquisition Costs | 5. Deferred Acquisition Costs Acquisition costs deferred and amortized were as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended | ​ | For the nine months ended
​ | ​ | September 30, | ​ | September 30,
​ | ​ | 2022 | ​ | 2021 | ​ | 2022 | ​ | 2021
​ | ​ | (in millions)
Balance at beginning of year |  | $ | 4,340.3 |  | $ | 3,581.2 |  | $ | 3,757.5 |  | $ | 3,409.7
Costs deferred during the year | ​ |  | 87.5 | ​ |  | 118.0 | ​ |  | 285.5 | ​ |  | 355.1
Amortized to expense during the year (1) | ​ |  | 4.0 | ​ |  | (34.3) | ​ |  | (326.5) | ​ |  | (192.8)
Adjustment related to unrealized losses on available-for-sale securities and derivative instruments (2) | ​ |  | 402.2 | ​ |  | 32.0 | ​ |  | 1,117.5 | ​ |  | 124.9
Balance at end of year | ​ | $ | 4,834.0 | ​ | $ | 3,696.9 | ​ | $ | 4,834.0 | ​ | $ | 3,696.9
(1) | Includes adjustments for revisions to estimated gross profits. Amortization for the nine months ended September 30, 2022, includes the impact from re-cohorting. Refer to Note 1, Nature of Operations and Significant Accounting Policies, under the caption “Actuarial Balance Re-Cohorting” for further details.
(2) | The adjustment for the nine months ended September 30, 2022, includes the impact from re-cohorting. Refer to Note 1, Nature of Operations and Significant Accounting Policies, under the caption “Actuarial Balance Re-Cohorting” for further details.

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- Definition Disclosure of the reconciliation of deferred acquisition costs from the beginning of a period to the end of a period, including costs capitalized and amortized during the period. + References No definition available. + Details
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- References No definition available. + Details
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