Indexed Strategies Risk [Member] Market Risk Related to Indexes [Member] DEBT SECURITIES RISK [Member] EQUITY SECURITIES RISK [Member] INFLATION RISK [Member] INTEREST RATE RISK [Member] MARKET RISKS [Member] REIT RISK [Member] U S GOVERNMENT SECURITIES RISK [Member] VOLATILITY CONTROL RISK [Member] Market Risk Related to Option Prices [Member] Performance Lock Risk [Member] Declared Rate Strategy Risk [Member] Regulatory Risk [Member] Business Disruption and Cybersecurity Risks [Member] Insurance Company Risks [Member] S And P 500 [Member] iShares MSCI EAFE ETF [Member] iShares U S Real Estate ETF [Member] SPDR Gold Shares ETF [Member] First Trust Barclays Edge [Member] Russell 2000 [Member] One Year 10 Floor 1 Cap [Member] One Year 10 Buffer 1 Cap [Member] One Year 10 Buffer 1 Trigger Rate [Member] One Year 10 Buffer 1 Dual Performance Trigger Rate [Member] One Year 20 Buffer 1 Cap [Member] One Year 20 Buffer 1 Trigger Rate [Member] One Year 50 Downside Participation Rate 5 Upside Participation Rate [Member] Three Years 10 Buffer 5 Upside Participation Rate And 1 Cap [Member] Three Years 20 Buffer 5 Upside Participation Rate And 1 Cap [Member] Six Years 10 Buffer 5 Upside Participation Rate And 1 Cap [Member] Six Years 20 Buffer 5 Upside Participation Rate And 1 Cap [Member] One Year 0 Floor 1 Cap [Member] One Year 50 Downside Participation Rate 1 Cap [Member] Two Year 50 Downside Participation Rate 1 Cap [Member] Two Year 50 Downside Participation Rate 5 Upside Participation Rate [Member] One Year 10 Buffer 5 Upside Participation Rate [Member] Three Years 10 Buffer 5 Upside Participation Rate [Member] Three Years 20 Buffer 5 Upside Participation Rate [Member] Six Years 10 Buffer 5 Upside Participation Rate [Member] Six Years 20 Buffer 5 Upside Participation Rate [Member] Ten Buffer Strategy [Member] Twenty Buffer Strategy [Member] Minus 10 Floor Strategy [Member] Zero Floor Strategy [Member] Six Years 10 Buffer Cap Control Minimum [Member] Six Years 20 Buffer Cap Control Minimum [Member] Downside Participation Rate Return Limit [Member] Upside Participation Rate Return Limit [Member] Trigger Rate Return Limit [Member] Free Withdrawal Allowance [Member] Extended Care Waiver [Member] Terminal Illness Waiver [Member] Performance Lock [Member] Automated Withdrawals [Member] Index Summit 6 [Member} Index Summit 6® with Death Benefit Return of Premium Guarantee [Member]