v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
C000241303 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000241303 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000241303 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000241303 | IndustryElectronic Equipment, Instruments & Components  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000241303 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000241303 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.90%
C000241303 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000241303 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000241302 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000241302 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000241302 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000241302 | IndustryElectronic Equipment, Instruments & Components  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000241302 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000241302 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.90%
C000241302 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000241302 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000074970 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
C000074970 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 23.60%
C000074970 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
C000074970 | Money Market FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000074970 | Global Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000074970 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000074971 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 55.00%
C000074971 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 23.60%
C000074971 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
C000074971 | Money Market FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000074971 | Global Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000074971 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000043869 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000043869 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000043869 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000043869 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000043869 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000043869 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 93.80%
C000043869 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000043869 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000043869 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043870 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000043870 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000043870 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000043870 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000043870 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000043870 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 93.80%
C000043870 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000043870 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000043870 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000223154 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 37.00%
C000223154 | AAA  
Holdings [Line Items]  
Percent of Total Investments 18.70%
C000223154 | AA  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000223154 | A  
Holdings [Line Items]  
Percent of Total Investments 16.10%
C000223154 | BBB  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000223154 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 10.40%
C000223154 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000223154 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000223154 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000223154 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000223154 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000223154 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223154 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (3.30%)
C000223154 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 23.50%
C000223154 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
C000223154 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 20.20%
C000223154 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223154 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
C000223154 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000223154 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000223154 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000223154 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000223155 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 37.00%
C000223155 | AAA  
Holdings [Line Items]  
Percent of Total Investments 18.70%
C000223155 | AA  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000223155 | A  
Holdings [Line Items]  
Percent of Total Investments 16.10%
C000223155 | BBB  
Holdings [Line Items]  
Percent of Total Investments 9.20%
C000223155 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 10.40%
C000223155 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000223155 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
C000223155 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000223155 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000223155 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000223155 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223155 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (3.30%)
C000223155 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 23.50%
C000223155 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 21.80%
C000223155 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 20.20%
C000223155 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
C000223155 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
C000223155 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000223155 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000223155 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000223155 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000241305 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000241305 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000241305 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000241305 | IndustryConstruction & Engineering  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000241305 | IndustryHealth Care Equipment & Supplies  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000241305 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
C000241305 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000241305 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (3.60%)
C000241305 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000241304 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000241304 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000241304 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000241304 | IndustryConstruction & Engineering  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000241304 | IndustryHealth Care Equipment & Supplies  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000241304 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
C000241304 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000241304 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (3.60%)
C000241304 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000241306 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
C000241306 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
C000241306 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000241306 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000241306 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000241306 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000241306 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000241306 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000241307 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
C000241307 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
C000241307 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000241307 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000241307 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000241307 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000241307 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000241307 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000199415 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000199415 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 16.40%
C000199415 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 14.20%
C000199415 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000199415 | IndustryEntertainment  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000199415 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000199415 | Uruguay  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000199415 | China  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000199415 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000199415 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000199415 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000199415 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000199415 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000199416 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000199416 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 16.40%
C000199416 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 14.20%
C000199416 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000199416 | IndustryEntertainment  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000199416 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 58.70%
C000199416 | Uruguay  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000199416 | China  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000199416 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000199416 | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000199416 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
C000199416 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000199416 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000007720 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 47.10%
C000007720 | AAA  
Holdings [Line Items]  
Percent of Total Investments 13.80%
C000007720 | AA  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000007720 | A  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000007720 | BBB  
Holdings [Line Items]  
Percent of Total Investments 16.60%
C000007720 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000007720 | BB  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000007720 | B  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000007720 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000007720 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000007720 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000007720 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000007720 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000007720 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.50%)
C000007720 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 33.00%
C000007720 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000007720 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
C000007720 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000007720 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000007720 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000007720 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000007720 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000007720 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000007720 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000007721 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 47.10%
C000007721 | AAA  
Holdings [Line Items]  
Percent of Total Investments 13.80%
C000007721 | AA  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000007721 | A  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000007721 | BBB  
Holdings [Line Items]  
Percent of Total Investments 16.60%
C000007721 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000007721 | BB  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000007721 | B  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000007721 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000007721 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000007721 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000007721 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000007721 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000007721 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.50%)
C000007721 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 33.00%
C000007721 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000007721 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
C000007721 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 29.50%
C000007721 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000007721 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000007721 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000007721 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000007721 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000007721 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000087494 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000087494 | AAA  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000087494 | AA  
Holdings [Line Items]  
Percent of Total Investments 6.00%
C000087494 | A  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000087494 | BBB  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000087494 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000087494 | BB  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000087494 | B  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000087494 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000087494 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000087494 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000087494 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000087494 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000087494 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000087494 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 18.90%
C000087494 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
C000087494 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
C000087494 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000087494 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000087494 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000087494 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000087494 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000087494 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000087494 | AssetRegional Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000087495 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 35.20%
C000087495 | AAA  
Holdings [Line Items]  
Percent of Total Investments 30.20%
C000087495 | AA  
Holdings [Line Items]  
Percent of Total Investments 6.00%
C000087495 | A  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000087495 | BBB  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000087495 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000087495 | BB  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000087495 | B  
Holdings [Line Items]  
Percent of Total Investments 2.40%
C000087495 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000087495 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000087495 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000087495 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000087495 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000087495 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000087495 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 18.90%
C000087495 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 12.50%
C000087495 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
C000087495 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000087495 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000087495 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000087495 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000087495 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000087495 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000087495 | AssetRegional Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000223152 | BBB  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000223152 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000223152 | BB  
Holdings [Line Items]  
Percent of Total Investments 60.60%
C000223152 | B  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000223152 | CCC  
Holdings [Line Items]  
Percent of Total Investments 6.90%
C000223152 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000223152 | IndustryMedia  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223152 | IndustryOil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000223152 | IndustryCommercial Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223152 | IndustryRetail  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000223152 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000223152 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000223152 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 84.80%
C000223152 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000223152 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223153 | BBB  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000223153 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 2.80%
C000223153 | BB  
Holdings [Line Items]  
Percent of Total Investments 60.60%
C000223153 | B  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000223153 | CCC  
Holdings [Line Items]  
Percent of Total Investments 6.90%
C000223153 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000223153 | IndustryMedia  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000223153 | IndustryOil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000223153 | IndustryCommercial Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000223153 | IndustryRetail  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000223153 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000223153 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000223153 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 84.80%
C000223153 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000223153 | AssetLoan Agreements  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000007710 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000007710 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000007710 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000007710 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000007710 | IndustryElectric Utilities  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000007710 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.20%
C000007710 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007710 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007710 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000007711 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000007711 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000007711 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000007711 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000007711 | IndustryElectric Utilities  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000007711 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.20%
C000007711 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007711 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007711 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000223159 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223159 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000223159 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000223159 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000223159 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223159 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
C000223159 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000223159 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000223158 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000223158 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000223158 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000223158 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
C000223158 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000223158 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
C000223158 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000223158 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007708 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000007708 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000007708 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000007708 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000007708 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000007708 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000007708 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000007708 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007709 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000007709 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000007709 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000007709 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000007709 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000007709 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000007709 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000007709 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000223160 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 19.50%
C000223160 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
C000223160 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000223160 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
C000223160 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000223160 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.50%
C000223160 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000223160 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000223161 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 19.50%
C000223161 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 17.90%
C000223161 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000223161 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
C000223161 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
C000223161 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.50%
C000223161 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000223161 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000223157 | Sub-IndustryREIT Diversified  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000223157 | Sub-IndustryREIT Apartments  
Holdings [Line Items]  
Percent of Net Asset Value 15.10%
C000223157 | Sub-IndustryREIT Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 14.10%
C000223157 | Sub-IndustryREIT Storage  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000223157 | Sub-IndustryREIT Warehouse/Industry  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223157 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.00%
C000223157 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000223157 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000223156 | Sub-IndustryREIT Diversified  
Holdings [Line Items]  
Percent of Net Asset Value 21.70%
C000223156 | Sub-IndustryREIT Apartments  
Holdings [Line Items]  
Percent of Net Asset Value 15.10%
C000223156 | Sub-IndustryREIT Health Care  
Holdings [Line Items]  
Percent of Net Asset Value 14.10%
C000223156 | Sub-IndustryREIT Storage  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000223156 | Sub-IndustryREIT Warehouse/Industry  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
C000223156 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.00%
C000223156 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000223156 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000074974 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 50.80%
C000074974 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000074974 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
C000074974 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000074974 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000074974 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000074974 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000074974 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000074974 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000074974 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000074974 | AssetExchange-Traded Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000074975 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 50.80%
C000074975 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000074975 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
C000074975 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000074975 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000074975 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
C000074975 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000074975 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000074975 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000074975 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000074975 | AssetExchange-Traded Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000124876 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000124876 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000124876 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000124877 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 95.20%
C000124877 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000124877 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000043855 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000043855 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043855 | IndustryChemicals  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000043855 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043855 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000043855 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000043855 | France  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
C000043855 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000043855 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000043855 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000043855 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.20%
C000043855 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043855 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000043855 | AssetAgency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000043856 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000043856 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043856 | IndustryChemicals  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
C000043856 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043856 | IndustryBeverages  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000043856 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000043856 | France  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
C000043856 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
C000043856 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000043856 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000043856 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.20%
C000043856 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043856 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000043856 | AssetAgency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000043857 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
C000043857 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000043857 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000043857 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043857 | IndustryHealth Care Providers & Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000043857 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.60%
C000043857 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043857 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000043857 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000043858 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
C000043858 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000043858 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000043858 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
C000043858 | IndustryHealth Care Providers & Services  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
C000043858 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.60%
C000043858 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043858 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000043858 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000075432 | Top 5 Fixed IncomeUnited States  
Holdings [Line Items]  
Percent of Net Asset Value 31.90%
C000075432 | Top 5 Fixed IncomeUnited Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000075432 | Top 5 Fixed IncomeNew Zealand  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000075432 | Top 5 Fixed IncomeJapan  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000075432 | Top 5 Fixed IncomeFrance  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000075432 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 32.40%
C000075432 | AAA  
Holdings [Line Items]  
Percent of Total Investments 21.90%
C000075432 | AA  
Holdings [Line Items]  
Percent of Total Investments 15.50%
C000075432 | A  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000075432 | BBB  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000075432 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 17.30%
C000075432 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000075432 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000075432 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000075432 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 31.90%
C000075432 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000075432 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 61.10%
C000075433 | Top 5 Fixed IncomeUnited States  
Holdings [Line Items]  
Percent of Net Asset Value 31.90%
C000075433 | Top 5 Fixed IncomeUnited Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
C000075433 | Top 5 Fixed IncomeNew Zealand  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000075433 | Top 5 Fixed IncomeJapan  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000075433 | Top 5 Fixed IncomeFrance  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
C000075433 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 32.40%
C000075433 | AAA  
Holdings [Line Items]  
Percent of Total Investments 21.90%
C000075433 | AA  
Holdings [Line Items]  
Percent of Total Investments 15.50%
C000075433 | A  
Holdings [Line Items]  
Percent of Total Investments 7.50%
C000075433 | BBB  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000075433 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 17.30%
C000075433 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000075433 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000075433 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000075433 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 31.90%
C000075433 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000075433 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 61.10%
C000007702 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000007702 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000007702 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000007702 | IndustryElectric Utilities  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000007702 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000007702 | France  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
C000007702 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 24.90%
C000007702 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000007702 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 22.50%
C000007702 | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000007702 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.10%
C000007702 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000007702 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000007703 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000007703 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000007703 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000007703 | IndustryElectric Utilities  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000007703 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000007703 | France  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
C000007703 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 24.90%
C000007703 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000007703 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 22.50%
C000007703 | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000007703 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.10%
C000007703 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000007703 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000139580 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.40%
C000139580 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 58.10%
C000139580 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000139580 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000139581 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.40%
C000139581 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 58.10%
C000139581 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000139581 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000139574 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 15.20%
C000139574 | AAA  
Holdings [Line Items]  
Percent of Total Investments 32.50%
C000139574 | AA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000139574 | A  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000139574 | BBB  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000139574 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 17.60%
C000139574 | BB  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000139574 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000139574 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000139574 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000139574 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000139574 | IndustryAuto Manufacturers  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000139574 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (11.00%)
C000139574 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000139574 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 27.50%
C000139574 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000139574 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000139574 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
C000139574 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000139574 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000139574 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000139574 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000139574 | AssetMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000139575 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 15.20%
C000139575 | AAA  
Holdings [Line Items]  
Percent of Total Investments 32.50%
C000139575 | AA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000139575 | A  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000139575 | BBB  
Holdings [Line Items]  
Percent of Total Investments 12.90%
C000139575 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 17.60%
C000139575 | BB  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000139575 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
C000139575 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000139575 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000139575 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000139575 | IndustryAuto Manufacturers  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000139575 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (11.00%)
C000139575 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
C000139575 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 27.50%
C000139575 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
C000139575 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
C000139575 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
C000139575 | AssetShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000139575 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000139575 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000139575 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000139575 | AssetMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000090467 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 59.70%
C000090467 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
C000090467 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 18.10%
C000090467 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090467 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090468 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 59.70%
C000090468 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
C000090468 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 18.10%
C000090468 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090468 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090469 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.70%
C000090469 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
C000090469 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.10%
C000090469 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090470 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.70%
C000090470 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
C000090470 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.10%
C000090470 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090471 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000090471 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.20%
C000090471 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 32.10%
C000090471 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090471 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090472 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000090472 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.20%
C000090472 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 32.10%
C000090472 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090472 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090473 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 59.70%
C000090473 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
C000090473 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000090473 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000090474 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 59.70%
C000090474 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 22.20%
C000090474 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000090474 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000090476 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.60%
C000090476 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
C000090476 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.20%
C000090476 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090475 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.60%
C000090475 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 34.20%
C000090475 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.20%
C000090475 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090477 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000090477 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.20%
C000090477 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 32.10%
C000090477 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000090478 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000090478 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.20%
C000090478 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 32.10%
C000090478 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000062027 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 71.30%
C000062027 | AAA  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000062027 | AA  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000062027 | A  
Holdings [Line Items]  
Percent of Total Investments 11.10%
C000062027 | BBB  
Holdings [Line Items]  
Percent of Total Investments 9.90%
C000062027 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000062027 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000062027 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000062027 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000062027 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000062027 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000062027 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000062027 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000062027 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.40%)
C000062027 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 24.10%
C000062027 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 44.90%
C000062027 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 24.40%
C000062027 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000062027 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000062027 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000062027 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000062027 | AssetAgency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000062027 | AssetMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000062028 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 71.30%
C000062028 | AAA  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000062028 | AA  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000062028 | A  
Holdings [Line Items]  
Percent of Total Investments 11.10%
C000062028 | BBB  
Holdings [Line Items]  
Percent of Total Investments 9.90%
C000062028 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000062028 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000062028 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
C000062028 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000062028 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000062028 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000062028 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000062028 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000062028 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.40%)
C000062028 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 24.10%
C000062028 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 44.90%
C000062028 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 24.40%
C000062028 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000062028 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000062028 | AssetSupranational Banks  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000062028 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000062028 | AssetAgency Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000062028 | AssetMunicipal Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000204842 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 16.90%
C000204842 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 13.30%
C000204842 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000204842 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000204842 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000204842 | China  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000204842 | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
C000204842 | India  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
C000204842 | Republic Of Korea  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000204842 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000204842 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000204842 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000204842 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000204842 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000204842 | AssetPreferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000204842 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000204843 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 16.90%
C000204843 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 13.30%
C000204843 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
C000204843 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000204843 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000204843 | China  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000204843 | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 18.60%
C000204843 | India  
Holdings [Line Items]  
Percent of Net Asset Value 17.80%
C000204843 | Republic Of Korea  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
C000204843 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000204843 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 94.30%
C000204843 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000204843 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000204843 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000204843 | AssetPreferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000204843 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000007718 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 37.80%
C000007718 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.80%
C000007718 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 17.20%
C000007718 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000007718 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000007719 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 37.80%
C000007719 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.80%
C000007719 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 17.20%
C000007719 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000007719 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
C000062029 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000062029 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 13.20%
C000062029 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000062029 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000062029 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000062029 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000062029 | France  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
C000062029 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000062029 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000062029 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000062029 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.20%
C000062029 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000062029 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000062029 | AssetPreferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000062029 | AssetConvertible Preferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000062030 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
C000062030 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 13.20%
C000062030 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000062030 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000062030 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000062030 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000062030 | France  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
C000062030 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 21.20%
C000062030 | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000062030 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000062030 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.20%
C000062030 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
C000062030 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000062030 | AssetPreferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
C000062030 | AssetConvertible Preferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000131277 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000131277 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000131277 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000131278 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 95.30%
C000131278 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000131278 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000124880 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 96.10%
C000124880 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000124880 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000124881 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 96.10%
C000124881 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000124881 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000145055 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000145055 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000145055 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000145055 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000145055 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000145055 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000145055 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000145055 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000145056 | IndustryInsurance  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
C000145056 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000145056 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000145056 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000145056 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000145056 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000145056 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
C000145056 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000223681 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 18.90%
C000223681 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000223681 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000223681 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223681 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000223681 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.40%
C000223681 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000223681 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000223682 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 18.90%
C000223682 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 23.70%
C000223682 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
C000223682 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000223682 | IndustryBroadline Retail  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
C000223682 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.40%
C000223682 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000223682 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043348 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
C000043348 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
C000043348 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000043348 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000043348 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000043348 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.60%
C000043348 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000043348 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043349 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
C000043349 | IndustrySemiconductors & Semiconductor Equipment  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
C000043349 | IndustryInteractive Media & Services  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
C000043349 | IndustryTechnology Hardware, Storage & Peripherals  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
C000043349 | IndustryFinancial Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000043349 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.60%
C000043349 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
C000043349 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000199417 | AAA  
Holdings [Line Items]  
Percent of Total Investments 2.20%
C000199417 | AA  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000199417 | A  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000199417 | BBB  
Holdings [Line Items]  
Percent of Total Investments 33.70%
C000199417 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000199417 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
C000199417 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000199417 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000199417 | IndustryAuto Manufacturers  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000199417 | IndustryReal Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000199417 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000199417 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (1.60%)
C000199417 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.40%
C000199418 | AAA  
Holdings [Line Items]  
Percent of Total Investments 2.20%
C000199418 | AA  
Holdings [Line Items]  
Percent of Total Investments 19.50%
C000199418 | A  
Holdings [Line Items]  
Percent of Total Investments 44.50%
C000199418 | BBB  
Holdings [Line Items]  
Percent of Total Investments 33.70%
C000199418 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000199418 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 35.10%
C000199418 | IndustryElectric  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000199418 | IndustryDiversified Financial Services  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000199418 | IndustryAuto Manufacturers  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000199418 | IndustryReal Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000199418 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
C000199418 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (1.60%)
C000199418 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 98.40%
C000043863 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000043863 | IndustryElectronic Equipment, Instruments & Components  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000043863 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
C000043863 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000043863 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000043863 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.10%
C000043863 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000043863 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000043863 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043863 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043864 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000043864 | IndustryElectronic Equipment, Instruments & Components  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000043864 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.40%
C000043864 | IndustryBiotechnology  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
C000043864 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000043864 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.10%
C000043864 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000043864 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000043864 | AssetRights  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000043864 | AssetWarrants  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000124883 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 96.60%
C000124883 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000124883 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124882 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 96.60%
C000124882 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
C000124882 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000007700 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000007700 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000007700 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
C000007700 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000007700 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000007700 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
C000007700 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000007700 | AssetConvertible Preferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000007701 | IndustryCapital Markets  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
C000007701 | IndustrySoftware  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000007701 | IndustryHotels, Restaurants & Leisure  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
C000007701 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000007701 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
C000007701 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
C000007701 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000007701 | AssetConvertible Preferred Stocks  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000046813 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.60%
C000046813 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.80%
C000046813 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000046813 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000046813 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000046813 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000046814 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 39.60%
C000046814 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 38.80%
C000046814 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
C000046814 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000046814 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000046814 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
C000046815 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.80%
C000046815 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 48.70%
C000046815 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 16.40%
C000046815 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.20%)
C000046815 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000046815 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000046816 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 26.80%
C000046816 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 48.70%
C000046816 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 16.40%
C000046816 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.20%)
C000046816 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000046816 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
C000046818 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000046818 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 63.80%
C000046818 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 23.10%
C000046818 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000046818 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000046818 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000046817 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
C000046817 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 63.80%
C000046817 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 23.10%
C000046817 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000046817 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000046817 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000099066 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000099066 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 71.00%
C000099066 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 25.70%
C000099066 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099066 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000099066 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000099067 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000099067 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 71.00%
C000099067 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 25.70%
C000099067 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099067 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
C000099067 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000218802 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000218802 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 71.60%
C000218802 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000218802 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000218802 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000218802 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000218803 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000218803 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 71.60%
C000218803 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
C000218803 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000218803 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000218803 | International Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000153127 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 28.00%
C000153127 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 68.80%
C000153127 | Global Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000153127 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000153127 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000153126 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 28.00%
C000153126 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 68.80%
C000153126 | Global Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000153126 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000153126 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000099231 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000099231 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099231 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000099230 | Fixed Income FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 99.80%
C000099230 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099230 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000099226 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 99.90%
C000099226 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000099226 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099227 | Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 99.90%
C000099227 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000099227 | Money Market FundsShort-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
C000099228 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 100.10%
C000099228 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000099229 | International Equity FundsLong-Term Investments  
Holdings [Line Items]  
Percent of Net Asset Value 100.10%
C000099229 | Other  
Holdings [Line Items]  
Percent of Net Asset Value (0.10%)
C000043862 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000043862 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000043862 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
C000043862 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000043862 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000043862 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000043862 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000043862 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000043861 | IndustryMachinery  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
C000043861 | IndustryOil, Gas & Consumable Fuels  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000043861 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
C000043861 | IndustryAerospace & Defense  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
C000043861 | IndustrySpecialty Retail  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000043861 | AssetCommon Stock  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
C000043861 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000043861 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
C000170901 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 47.80%
C000170901 | AAA  
Holdings [Line Items]  
Percent of Total Investments 13.80%
C000170901 | AA  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000170901 | A  
Holdings [Line Items]  
Percent of Total Investments 14.60%
C000170901 | BBB  
Holdings [Line Items]  
Percent of Total Investments 14.60%
C000170901 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000170901 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000170901 | B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000170901 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000170901 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000170901 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000170901 | IndustryOil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000170901 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000170901 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000170901 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.40%)
C000170901 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
C000170901 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000170901 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 16.60%
C000170901 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 29.20%
C000170901 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000170901 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000170901 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000170901 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000170901 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
C000170902 | U.S. Government  
Holdings [Line Items]  
Percent of Total Investments 47.80%
C000170902 | AAA  
Holdings [Line Items]  
Percent of Total Investments 13.80%
C000170902 | AA  
Holdings [Line Items]  
Percent of Total Investments 5.70%
C000170902 | A  
Holdings [Line Items]  
Percent of Total Investments 14.60%
C000170902 | BBB  
Holdings [Line Items]  
Percent of Total Investments 14.60%
C000170902 | Not Rated  
Holdings [Line Items]  
Percent of Total Investments 3.20%
C000170902 | BB  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000170902 | B  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000170902 | IndustryBanks  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000170902 | IndustryPipelines  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000170902 | IndustryTelecommunications  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000170902 | IndustryOil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000170902 | IndustryPharmaceuticals  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000170902 | AssetMoney Market Funds  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000170902 | Asset Other Line  
Holdings [Line Items]  
Percent of Net Asset Value (0.40%)
C000170902 | AssetCorporate Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 29.00%
C000170902 | AssetNon-Agency Asset-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
C000170902 | AssetU.S. Treasury Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 16.60%
C000170902 | AssetAgency Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 29.20%
C000170902 | AssetAgency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000170902 | AssetNon-Agency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000170902 | AssetNon-Agency Collateralized Mortgage Obligations  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
C000170902 | AssetAgency Commercial Mortgage-Backed Securities  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
C000170902 | AssetSovereign Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%