v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
C000001700 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000001700 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 92.90%
C000001700 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000001702 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000001702 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 92.90%
C000001702 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000001703 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.90%
C000001703 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 92.90%
C000001703 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
C000001704 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000001704 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.10%
C000001704 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000001706 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000001706 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.10%
C000001706 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000123977 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000123977 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.10%
C000123977 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000001707 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000001707 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.10%
C000001707 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
C000039982 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000039982 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000039982 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
C000039984 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000039984 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000039984 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
C000039985 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
C000039985 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 96.90%
C000039985 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
C000039986 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000039986 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 94.90%
C000039986 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000039988 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000039988 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 94.90%
C000039988 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000039989 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000039989 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 94.90%
C000039989 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000171397 [Member] | Repurchase Agreements [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
C000171397 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 94.90%
C000171397 [Member] | Investments Purchased with Collateral from Securities Lending [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
C000079618 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000079618 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000079618 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000079618 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000079618 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079618 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000079618 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000079618 [Member] | NORWAY  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000079618 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000079618 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000079618 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 52.80%
C000079618 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.20%
C000079618 [Member] | Convertible Preferred Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079618 [Member] | Structured Notes [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000079619 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000079619 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000079619 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000079619 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000079619 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079619 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000079619 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000079619 [Member] | NORWAY  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000079619 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000079619 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000079619 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 52.80%
C000079619 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.20%
C000079619 [Member] | Convertible Preferred Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079619 [Member] | Structured Notes [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10%
C000079621 [Member] | Other [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.40%
C000079621 [Member] | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000079621 [Member] | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.30%
C000079621 [Member] | HONG KONG  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000079621 [Member] | ITALY  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079621 [Member] | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 7.70%
C000079621 [Member] | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 4.60%
C000079621 [Member] | NORWAY  
Holdings [Line Items]  
Percent of Total Investments 1.80%
C000079621 [Member] | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 3.00%
C000079621 [Member] | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000079621 [Member] | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 52.80%
C000079621 [Member] | Common Stock [Member]  
Holdings [Line Items]  
Percent of Total Investments 97.20%
C000079621 [Member] | Convertible Preferred Securities [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
C000079621 [Member] | Structured Notes [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10%