Class Wilshire Global Allocation Fund - C000002798 Wilshire Global Allocation Fund Broad Based Index:2ClassTF-MSCI ACWI Net Total Return Index (USD)_1 MSCI ACWI Net Total Return Index (USD) [Member] Additional Index:3ClassTF-Bloomberg Global Aggregate USD Hedged Bloomberg Global Aggregate USD Hedged [Member] Additional Index:4ClassTF-65/35 MSCI ACWI IMI/Bloomberg Global Agg(Hedged) 65/35 MSCI ACWI IMI/Bloomberg Global Agg (Hedged) [Member] Industry Sector:5ClassTF-Cash & Other Cash & Other [Member] Largest Holding:6ClassTF-Wilshire International Equity Fund Wilshire International Equity Fund [Member] Largest Holding:7ClassTF-Wilshire Income Opportunities Fund Wilshire Income Opportunities Fund [Member] Largest Holding:8ClassTF-Wilshire Large Company Growth Portfolio Wilshire Large Company Growth Portfolio [Member] Largest Holding:9ClassTF-Wilshire Large Company Value Portfolio Wilshire Large Company Value Portfolio [Member] Largest Holding:10ClassTF-Vanguard Total International Bond Index Fund Vanguard Total International Bond Index Fund [Member] Largest Holding:11ClassTF-Vanguard Mega Cap Index Fund Vanguard Mega Cap Index Fund [Member] Largest Holding:12ClassTF-Fidelity Emerging Markets Index Fund Fidelity Emerging Markets Index Fund [Member] Largest Holding:13ClassTF-Vanguard Long-Term Bond Index Fund Vanguard Long-Term Bond Index Fund [Member] Largest Holding:14ClassTF-Wilshire Small Company Value Portfolio Wilshire Small Company Value Portfolio [Member] Largest Holding:15ClassTF-Wilshire Small Company Growth Portfolio Wilshire Small Company Growth Portfolio [Member] Net Assets Investment Company Portfolio Turnover Portfolio Turnover Commodity Index Linked Notes [Member] Commodity Index Linked Notes Sovereign Debt Securities [Member] Sovereign Debt Securities Convertible Debt Securities [Member] Convertible Debt Securities Corporate Debt Securities [Member] Corporate Debt Securities Corporate Note Securities [Member] Corporate Note Securities Corporate Bond Securities [Member] Corporate Bond Securities Fixed Income Investments [Member] Fixed Income Investments Securities Investment [Member] Securities Investment Other Aggregated Investments [Member] Other Aggregated Investments Real Estate Sector [Member] Real Estate Sector Standard Poors 500 Index [Member] Standard Poors 500 Index Nasdaq Composite Index [Member] Nasdaq Composite Index Equity Securities Industry [Member] Equity Securities Industry Equity Securities [Member] Equity Securities Dow Jones Industrial Average [Member] Dow Jones Industrial Average Construction Sector [Member] Construction Sector Automotive Sector [Member] Automotive Sector Transportation Sector [Member] Transportation Sector Aerospace Sector [Member] Aerospace Sector Consumer Sector [Member] Consumer Sector Chemicals Sector [Member] Chemicals Sector Insurance Sector [Member] Insurance Sector Cash [Member] Cash Asset Backed Securities [Member] Asset Backed Securities Container And PackagingSector [Member] Container And PackagingSector Investment Type [Axis] Asset Class US Treasury Securities [Member] US Treasury Securities Mortgage Backed Securities [Member] Mortgage Backed Securities Investment Type Categorization [Member] Investment Type Categorization Entertainment Sector [Member] Entertainment Sector Food And Beverage Sector [Member] Food And Beverage Sector Financial Services Sector [Member] Financial Services Sector Healthcare Sector [Member] Healthcare Sector Energy Sector [Member] Energy Sector Technology Sector [Member] Technology Sector Government Sector [Member] Government Sector No Trading Symbol