Shareholder Report, Holdings (Details)	May 31, 2026
C000114967 [Member] | TÜRKIYE
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000114967 [Member] | SOUTH AFRICA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000114967 [Member] | PERU
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000114967 [Member] | NIGERIA
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000114967 [Member] | MEXICO
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000114967 [Member] | MALAYSIA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000114967 [Member] | HUNGARY
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000114967 [Member] | COLOMBIA
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000114967 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000114967 [Member] | ARGENTINA
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000024819 [Member] | TÜRKIYE
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000024819 [Member] | SOUTH AFRICA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000024819 [Member] | PERU
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000024819 [Member] | NIGERIA
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024819 [Member] | MEXICO
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000024819 [Member] | MALAYSIA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000024819 [Member] | HUNGARY
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024819 [Member] | COLOMBIA
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000024819 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000024819 [Member] | ARGENTINA
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000024817 [Member] | TÜRKIYE
Holdings [Line Items]
Percent of Net Asset Value	7.30%
C000024817 [Member] | SOUTH AFRICA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000024817 [Member] | PERU
Holdings [Line Items]
Percent of Net Asset Value	5.50%
C000024817 [Member] | NIGERIA
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024817 [Member] | MEXICO
Holdings [Line Items]
Percent of Net Asset Value	7.20%
C000024817 [Member] | MALAYSIA
Holdings [Line Items]
Percent of Net Asset Value	3.90%
C000024817 [Member] | HUNGARY
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024817 [Member] | COLOMBIA
Holdings [Line Items]
Percent of Net Asset Value	3.70%
C000024817 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	9.30%
C000024817 [Member] | ARGENTINA
Holdings [Line Items]
Percent of Net Asset Value	3.30%
C000024820 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000024820 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
C000024820 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024820 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000024820 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000024820 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
C000024820 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024820 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000024820 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
C000024820 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.30%
C000024820 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000024820 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000024820 [Member] | FINLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000024820 [Member] | NORWAY
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000024820 [Member] | SPAIN
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024820 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	11.00%
C000024820 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000024820 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024820 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21.00%
C000024820 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024820 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	6.00%
C000024822 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000024822 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
C000024822 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024822 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000024822 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000024822 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
C000024822 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024822 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000024822 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
C000024822 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.30%
C000024822 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000024822 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000024822 [Member] | FINLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000024822 [Member] | NORWAY
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000024822 [Member] | SPAIN
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024822 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	11.00%
C000024822 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000024822 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000024822 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21.00%
C000024822 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000024822 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	6.00%
C000062082 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000062082 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	11.40%
C000062082 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000062082 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000062082 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.10%
C000062082 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.20%
C000062082 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000062082 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	26.10%
C000062082 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.50%
C000062082 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	13.30%
C000062082 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.50%
C000062082 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	9.40%
C000062082 [Member] | FINLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000062082 [Member] | NORWAY
Holdings [Line Items]
Percent of Net Asset Value	2.50%
C000062082 [Member] | SPAIN
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000062082 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	11.00%
C000062082 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.90%
C000062082 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	4.00%
C000062082 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21.00%
C000062082 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000062082 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	6.00%
C000129977 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000129977 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
C000129977 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000129977 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000129977 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000129977 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000129977 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000129977 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.90%
C000129977 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000129977 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.00%
C000129977 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000129977 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000129977 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	15.60%
C000129977 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000129977 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000129977 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19.20%
C000129977 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000129977 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000129977 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000129977 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000129977 [Member] | BELGIUM
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000090240 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000090240 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
C000090240 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000090240 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000090240 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000090240 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000090240 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000090240 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.90%
C000090240 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000090240 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.00%
C000090240 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000090240 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000090240 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	15.60%
C000090240 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000090240 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000090240 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19.20%
C000090240 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000090240 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000090240 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000090240 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000090240 [Member] | BELGIUM
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000130407 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000130407 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
C000130407 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000130407 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000130407 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000130407 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000130407 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000130407 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.90%
C000130407 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000130407 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.00%
C000130407 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000130407 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000130407 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	15.60%
C000130407 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000130407 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000130407 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19.20%
C000130407 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000130407 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000130407 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000130407 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000130407 [Member] | BELGIUM
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000024825 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000024825 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
C000024825 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000024825 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000024825 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000024825 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000024825 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000024825 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.90%
C000024825 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000024825 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.00%
C000024825 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000024825 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000024825 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	15.60%
C000024825 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000024825 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000024825 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19.20%
C000024825 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000024825 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000024825 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000024825 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000024825 [Member] | BELGIUM
Holdings [Line Items]
Percent of Net Asset Value	2.80%
C000024823 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.40%
C000024823 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.50%
C000024823 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	10.50%
C000024823 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000024823 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.60%
C000024823 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.60%
C000024823 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.30%
C000024823 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	18.90%
C000024823 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	15.80%
C000024823 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.00%
C000024823 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%
C000024823 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	8.90%
C000024823 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	15.60%
C000024823 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	2.30%
C000024823 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6.30%
C000024823 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19.20%
C000024823 [Member] | ITALY
Holdings [Line Items]
Percent of Net Asset Value	4.10%
C000024823 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9.90%
C000024823 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	16.70%
C000024823 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	2.40%
C000024823 [Member] | BELGIUM
Holdings [Line Items]
Percent of Net Asset Value	2.80%