| Item | Type | Period | Balance | Description | | Schedule of Minimum Guaranteed Benefit Liabilities | text | | | Tabular disclosure of minimum guaranteed benefits to policyholders and contract holders, such as guaranteed minimum death benefit, guaranteed minimum income benefit, and guaranteed annuitization benefits, discloses the amount of liability reported for additional insurance benefits, annuitization benefits and other minimum guarantees, by type of benefit, for the most recent balance sheet date and the incurred and paid amounts for periods presented for traditional and nontraditional products. |
| Long-Duration Contracts, Assumptions Supporting Guarantee Obligations | text | | | |
| Minimum Guarantees, Net Amount at Risk | text | | | |
| Separate Accounts Disclosure | text | | | |
| Liabilities for Guarantees on Long-Duration Contracts | text | | | A table reflecting the guaranteed minimum benefits by product type due contract holders under annuity and life products having traditional and nontraditional terms. |
| Guaranteed Benefit Liability, Net, Ending Balance | $ | instant | credit | Sum of the amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, as of the balance sheet date, net of reinsurance recoverables, for all guaranteed benefit types. |
| Reinsurance Recoverable, Guarantee Benefit | $ | instant | debit | Sum of the amount of guaranteed minimum benefits the ceding insurer expects to recover on insurance policies ceded to other insurance entities as of the balance sheet date for all guaranteed benefit types. |
| Long-Duration Contracts, Assumptions Underlying Guarantee Obligations | text | | | The entire disclosure for long duration contract assumptions underlying guarantee obligations. This may include the explanation of the underlying assumptions and percentages or rates used in determining the fair value of each guarantee obligation for each type of long-duration contract. |
| Minimum Guarantees, Net Amount at Risk Disclosure | text | | | The entire disclosure for contracts with guaranteed benefits in excess of the current account balance. Disclose the amount of liability reported for additional insurance benefits, annuitization benefits and other minimum guarantees; the net amount at risk; and the weighted average attained age of contract holders, by type of guarantee and by type of benefit, as of the most recent balance sheet date. |
| Gain (Loss) Recognized on Assets Transferred to Separate Account | text | | | |
| Separate Accounts of Contract Holders Note | text | | | Disclose the general nature of the contracts reported in separate accounts of contract holders, the nature and terms of minimum guarantees, the fair value of each major category of investment comprising the separate accounts, and the amount of gains and losses recognized on assets transferred to separate accounts. |
| Separate Accounts by Major Category of Investment | text | | | |
| Separate Account, Liability, Ending Balance | $ | instant | credit | Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account. |
| Product Or Service Axis | | | | |
| Guaranteed Insurance Contract, Type of Benefit | text | | | Information by benefit for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders. |
| Guaranteed Insurance Contract, Type of Guarantee | text | | | Information by guarantee for guaranteed benefit obligations in traditional and nontraditional long-duration contracts with policy and contract holders. |
| Liabilities for Guarantees on Long-Duration Contracts | text | | | Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |
| Schedule of Assumptions for Long-Duration Contracts by Product and Guarantee | text | | | Tabular disclosure of the underlying assumptions and percentages or rates used in determining the fair value of guarantee obligations for each type of long-duration contract. |
| Schedule of Net Amount of Risk by Product and Guarantee | text | | | Tabular disclosure of the guaranteed benefits in excess of the current account balance, quantifies such excesses (the net amounts at risk) and includes other relevant, pertinent information as of the most recent balance sheet date by product type. |
| Gain Recognized on Assets Transferred to Separate Account, Gross | $ | duration | credit | Amount of gain recognized during the reporting period on assets that were transferred into separate accounts. |
| Loss Recognized on Assets Transferred to Separate Account, Gross | $ | duration | debit | Amount of loss recognized during the reporting period on assets that were transferred into separate accounts. |
| Gain (Loss) Recognized on Assets Transferred to Separate Account, Total | $ | duration | credit | Amount of net gains or losses recognized during the reporting period on assets that were transferred into separate accounts. |
| Fair Value, Separate Account Investment | text | | | Tabular disclosure of fair value of asset supporting separate account. |