v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
C000202765 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000202765 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000202765 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000202765 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000202765 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000202765 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000202765 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000202765 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000202765 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000202765 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000202765 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000202765 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000202765 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000202765 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000124965 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000124965 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000124965 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000124965 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000124965 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000124965 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000124965 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124965 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000124965 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124965 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000124965 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000124965 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000124965 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000124965 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000158756 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000158756 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000158756 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 10.70%
C000158756 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000158756 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000158756 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000158756 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000158756 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.30%
C000158756 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000158756 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000158756 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000158756 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.40%
C000158756 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000158756 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000162604 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000162604 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000162604 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 10.70%
C000162604 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000162604 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000162604 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000162604 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000162604 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.30%
C000162604 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000162604 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000162604 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000162604 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.40%
C000162604 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000162604 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000124964 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000124964 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000124964 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000124964 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000124964 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000124964 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000124964 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124964 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000124964 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124964 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000124964 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000124964 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000124964 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000124964 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000162599 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000162599 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000162599 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000162599 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000162599 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000162599 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000162599 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000162599 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000162599 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000162599 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000162599 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000162599 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000162599 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000162599 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000124963 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000124963 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000124963 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000124963 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000124963 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000124963 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000124963 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124963 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000124963 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124963 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000124963 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000124963 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000124963 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000124963 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000124962 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.40%
C000124962 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.40%
C000124962 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000124962 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 14.50%
C000124962 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000124962 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.80%
C000124962 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124962 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000124962 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000124962 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000124962 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000124962 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000124962 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
C000124962 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000171525 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000171525 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000171525 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000171525 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000171522 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000171522 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000171522 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000171522 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000171524 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000171524 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000171524 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000171524 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000158755 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000158755 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000158755 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 10.70%
C000158755 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000158755 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000158755 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000158755 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000158755 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.30%
C000158755 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000158755 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000158755 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000158755 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.40%
C000158755 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000158755 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000158754 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000158754 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000158754 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 10.70%
C000158754 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000158754 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000158754 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000158754 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000158754 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.30%
C000158754 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000158754 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000158754 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000158754 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.40%
C000158754 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000158754 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000158757 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
C000158757 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000158757 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 10.70%
C000158757 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 11.80%
C000158757 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000158757 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.10%
C000158757 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000158757 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.30%
C000158757 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000158757 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000158757 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 5.80%
C000158757 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.40%
C000158757 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000158757 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
C000090854 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000090854 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000090854 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090854 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000090854 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000090854 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000090854 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000090854 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000090854 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000090854 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000090854 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000090854 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090854 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090854 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000090854 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090854 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090854 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162589 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000162589 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000162589 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000162589 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000162589 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000162589 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000162589 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000162589 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000162589 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000162589 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000162589 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000162589 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162589 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162589 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000162589 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000162589 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162589 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000090856 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000090856 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000090856 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090856 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000090856 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000090856 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000090856 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000090856 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000090856 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000090856 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000090856 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000090856 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090856 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090856 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000090856 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090856 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090856 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000090857 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000090857 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000090857 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090857 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000090857 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000090857 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000090857 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000090857 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000090857 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000090857 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000090857 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000090857 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090857 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090857 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000090857 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090857 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090857 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000090855 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000090855 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000090855 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090855 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000090855 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000090855 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000090855 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000090855 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000090855 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000090855 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000090855 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000090855 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090855 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090855 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000090855 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000090855 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000090855 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000202764 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
C000202764 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.10%
C000202764 [Member] | UNITED ARAB EMIRATES  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000202764 [Member] | SAUDI ARABIA  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000202764 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 24.60%
C000202764 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 18.40%
C000202764 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000202764 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000202764 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 22.40%
C000202764 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 4.50%
C000202764 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.70%
C000202764 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202764 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202764 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000202764 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000202764 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202764 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000202763 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000202763 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000202763 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000202763 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000202763 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000202763 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000202763 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000202763 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000202763 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000202763 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000202763 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000202763 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000202763 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000202763 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000202763 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000090852 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000090852 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000090852 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000090852 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000090852 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000090852 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000090852 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000090852 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000090852 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000090852 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000090852 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000090852 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090852 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000090852 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090852 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162588 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000162588 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000162588 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000162588 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000162588 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000162588 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000162588 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000162588 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000162588 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000162588 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000162588 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000162588 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162588 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000162588 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162588 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000090853 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000090853 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000090853 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000090853 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000090853 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000090853 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000090853 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000090853 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000090853 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000090853 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000090853 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000090853 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090853 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000090853 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090853 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000090851 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000090851 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000090851 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000090851 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000090851 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000090851 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000090851 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000090851 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000090851 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000090851 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000090851 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000090851 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090851 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000090851 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090851 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000090850 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000090850 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 1.50%
C000090850 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 22.80%
C000090850 [Member] | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000090850 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 17.20%
C000090850 [Member] | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 4.30%
C000090850 [Member] | SINGAPORE  
Holdings [Line Items]  
Percent of Total Investments 1.60%
C000090850 [Member] | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000090850 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 23.60%
C000090850 [Member] | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000090850 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 11.90%
C000090850 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090850 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000090850 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000090850 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000202769 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000202769 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000202769 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202769 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000175456 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000175456 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000175456 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175456 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000175456 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000175456 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000175456 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000175456 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000175456 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000175456 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000175456 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000175456 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000175456 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000175456 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000175456 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175453 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000175453 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000175453 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175453 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000175453 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000175453 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000175453 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000175453 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000175453 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000175453 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000175453 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000175453 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000175453 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000175453 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000175453 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000171521 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000171521 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000171521 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000171521 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000171523 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000171523 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000171523 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000171523 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
C000175455 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000175455 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000175455 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175455 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000175455 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000175455 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000175455 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000175455 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000175455 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000175455 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000175455 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000175455 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000175455 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000175455 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000175455 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175454 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000175454 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000175454 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175454 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000175454 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000175454 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000175454 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000175454 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000175454 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000175454 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000175454 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000175454 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000175454 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000175454 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000175454 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175457 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000175457 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000175457 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000175457 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000175457 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000175457 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000175457 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000175457 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000175457 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000175457 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000175457 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000175457 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000175457 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000175457 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000175457 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000202770 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.20%
C000202770 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 8.60%
C000202770 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000202770 [Member] | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000202770 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 20.00%
C000202770 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000202770 [Member] | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.30%
C000202770 [Member] | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 7.20%
C000202770 [Member] | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 5.40%
C000202770 [Member] | CHINA  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000202770 [Member] | INDIA  
Holdings [Line Items]  
Percent of Total Investments 5.50%
C000202770 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 91.60%
C000202770 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000202770 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
C000202770 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000202750 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000202750 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000202750 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000202750 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000202750 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000202750 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000202750 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000202750 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000202750 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000202750 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000202750 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000202750 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000202750 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000202750 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000014645 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000014645 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000014645 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000014645 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000014645 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000014645 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000014645 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000014645 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000014645 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000014645 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000014645 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000014645 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000014645 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014645 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000014646 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000014646 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000014646 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000014646 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000014646 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000014646 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000014646 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000014646 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000014646 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000014646 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000014646 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000014646 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000014646 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014646 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000033996 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000033996 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000033996 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000033996 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000033996 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000033996 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000033996 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000033996 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000033996 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000033996 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000033996 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000033996 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000033996 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000033996 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000162558 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000162558 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000162558 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000162558 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000162558 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000162558 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000162558 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000162558 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000162558 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000162558 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000162558 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000162558 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000162558 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162558 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000079565 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
C000079565 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.40%
C000079565 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 14.80%
C000079565 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 8.40%
C000079565 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000079565 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 7.10%
C000079565 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 21.10%
C000079565 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.10%
C000079565 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.60%
C000079565 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.50%
C000079565 [Member] | DENMARK  
Holdings [Line Items]  
Percent of Total Investments 2.70%
C000079565 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.30%
C000079565 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000079565 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000014649 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000014649 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162560 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000162560 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000079567 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000079567 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014648 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000014648 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014650 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000014650 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202751 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000202751 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000033990 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000033990 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000033990 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.70%
C000033990 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000033990 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000033990 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [1]
C000162548 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162548 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162548 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.70%
C000162548 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162548 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162548 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [2]
C000079555 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000079555 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079555 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.70%
C000079555 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000079555 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000079555 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [3]
C000014633 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014633 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014633 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.70%
C000014633 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014633 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014633 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [4]
C000202746 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000202746 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000202746 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000202746 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000014634 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014634 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014634 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.70%
C000014634 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014634 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014634 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [5]
C000014631 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000014631 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000014631 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014631 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000014632 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000014632 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000014632 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014632 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000079554 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000079554 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000079554 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000079554 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000162547 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000162547 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000162547 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162547 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000033989 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000033989 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000033989 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000033989 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000014653 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014653 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014653 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000014651 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014651 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014651 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000079568 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000079568 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079568 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000162561 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000162561 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162561 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000014652 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014652 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014652 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000014656 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014656 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014656 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014654 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014654 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014654 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014655 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014655 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014655 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162562 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000162562 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162562 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000079569 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000079569 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000079569 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000202752 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000202752 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000202752 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000202752 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000202752 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000202752 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014659 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014659 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014659 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000014659 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014659 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014659 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014657 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014657 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014657 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000014657 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014657 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014657 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014658 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014658 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014658 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000014658 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014658 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014658 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162563 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162563 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162563 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000162563 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162563 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162563 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000079570 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079570 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079570 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000079570 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000079570 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000079570 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162564 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.10%
C000162564 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162564 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000014660 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.10%
C000014660 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014660 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000014661 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.10%
C000014661 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014661 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
C000162565 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000162565 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162565 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162565 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000033280 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000033280 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162568 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000162568 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000079573 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000079573 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014663 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014663 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014663 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014663 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014662 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.00%
C000014662 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014662 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014662 [Member] | Investment companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000033282 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000033282 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000033281 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000033281 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202757 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 99.80%
C000202757 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014625 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014625 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.00%
C000014625 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014625 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000014625 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162545 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40%
C000162545 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000162545 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000162545 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.90%
C000162545 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000162545 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000162545 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000162545 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000162545 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000162545 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000162545 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000162545 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000162545 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162545 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000162545 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162545 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000162544 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162544 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.00%
C000162544 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000162544 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000162544 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014624 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014624 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.00%
C000014624 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014624 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%
C000014624 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000202745 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40%
C000202745 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000202745 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000202745 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.90%
C000202745 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000202745 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000202745 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000202745 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000202745 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000202745 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000202745 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000202745 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000202745 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000202745 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000202745 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000202745 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000079552 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40%
C000079552 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000079552 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000079552 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.90%
C000079552 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000079552 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000079552 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000079552 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000079552 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000079552 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000079552 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000079552 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000079552 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000079552 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000079552 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000079552 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000014626 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40%
C000014626 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000014626 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000014626 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.90%
C000014626 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000014626 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000014626 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000014626 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000014626 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000014626 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000014626 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000014626 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000014626 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014626 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000014626 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014626 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000014627 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40%
C000014627 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000014627 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 11.50%
C000014627 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.90%
C000014627 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000014627 [Member] | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.60%
C000014627 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.50%
C000014627 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 8.80%
C000014627 [Member] | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 7.40%
C000014627 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.20%
C000014627 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000014627 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000014627 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014627 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.30%
C000014627 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
C000014627 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
C000202742 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000202742 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000202742 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000202742 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000202742 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000202742 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162543 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162543 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162543 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000162543 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000162543 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014612 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014612 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014612 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000014612 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014612 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014613 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014613 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014613 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.90%
C000014613 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
C000014613 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000033988 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000033988 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000033988 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000033988 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000033988 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000033988 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000162542 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000162542 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000162542 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000162542 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000162542 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000162542 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000079551 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000079551 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000079551 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000079551 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000079551 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079551 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000014611 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000014611 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000014611 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000014611 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000014611 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000014611 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
C000033987 [Member] | Short Term Government Agency Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
C000033987 [Member] | Short Term Treasury Debt [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
C000033987 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 98.20%
C000033987 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000033987 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000033987 [Member] | Rights Warrants [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00%
[1] Affiliated investment.
[2] Affiliated investment.
[3] Affiliated investment.
[4] Affiliated investment.
[5] Affiliated investment.