Shareholder Report, Holdings (Details)

May 31, 2026

C000010979 [Member] | Samsung Electronics [Member]

Holdings [Line Items]

Percent of Net Asset Value

7.58%

C000010979 [Member] | Samsung C And T [Member]

Holdings [Line Items]

Percent of Net Asset Value

4.01%

C000010979 [Member] | MediaTek [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.72%

C000010979 [Member] | Reliance Industries [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.02%

C000010979 [Member] | SK hynix [Member]

Holdings [Line Items]

Percent of Net Asset Value

18.55%

^[1]

C000010979 [Member] | Taiwan Semiconductor Manufacturing [Member]

Holdings [Line Items]

Percent of Net Asset Value

13.28%

C000010979 [Member] | SK Square [Member]

Holdings [Line Items]

Percent of Net Asset Value

29.50%

^[1]

C000010979 [Member] | Alibaba Group Holding ADR [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.74%

C000010979 [Member] | Samsung Electronics Top Holding [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.10%

C000010979 [Member] | Tencent Holdings [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

C000010979 [Member] | Real Estate Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.21%

^[2]

C000010979 [Member] | Communications Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.57%

^[2]

C000010979 [Member] | Consumer Discretionary Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.89%

^[2]

C000010979 [Member] | Consumer Staples Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.79%

^[2]

C000010979 [Member] | Financial Services Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.03%

^[2]

C000010979 [Member] | Healthcare Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

^[2]

C000010979 [Member] | Energy Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.78%

^[2]

C000010979 [Member] | Industrial Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

34.24%

^[2]

C000010979 [Member] | Information Technology Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

44.52%

^[2]

C000010979 [Member] | Materials Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.51%

^[2]

C000010979 [Member] | Utilities Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.25%

^[2]

C000010979 [Member] | TAIWAN

Holdings [Line Items]

Percent of Net Asset Value

17.29%

C000010979 [Member] | TÜRKIYE

Holdings [Line Items]

Percent of Net Asset Value

0.46%

C000010979 [Member] | ARGENTINA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010979 [Member] | BRAZIL

Holdings [Line Items]

Percent of Net Asset Value

2.57%

C000010979 [Member] | CHINA

Holdings [Line Items]

Percent of Net Asset Value

5.09%

C000010979 [Member] | INDIA

Holdings [Line Items]

Percent of Net Asset Value

4.60%

C000010979 [Member] | INDONESIA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010979 [Member] | KOREA, REPUBLIC OF

Holdings [Line Items]

Percent of Net Asset Value

63.07%

C000010979 [Member] | MEXICO

Holdings [Line Items]

Percent of Net Asset Value

1.85%

C000010979 [Member] | PERU

Holdings [Line Items]

Percent of Net Asset Value

0.44%

C000171463 [Member] | Samsung Electronics [Member]

Holdings [Line Items]

Percent of Net Asset Value

7.58%

C000171463 [Member] | Samsung C And T [Member]

Holdings [Line Items]

Percent of Net Asset Value

4.01%

C000171463 [Member] | MediaTek [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.72%

C000171463 [Member] | Reliance Industries [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.02%

C000171463 [Member] | SK hynix [Member]

Holdings [Line Items]

Percent of Net Asset Value

18.55%

^[3]

C000171463 [Member] | Taiwan Semiconductor Manufacturing [Member]

Holdings [Line Items]

Percent of Net Asset Value

13.28%

C000171463 [Member] | SK Square [Member]

Holdings [Line Items]

Percent of Net Asset Value

29.50%

^[3]

C000171463 [Member] | Alibaba Group Holding ADR [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.74%

C000171463 [Member] | Samsung Electronics Top Holding [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.10%

C000171463 [Member] | Tencent Holdings [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

C000171463 [Member] | Real Estate Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.21%

^[4]

C000171463 [Member] | Communications Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.57%

^[4]

C000171463 [Member] | Consumer Discretionary Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.89%

^[4]

C000171463 [Member] | Consumer Staples Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.79%

^[4]

C000171463 [Member] | Financial Services Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.03%

^[4]

C000171463 [Member] | Healthcare Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

^[4]

C000171463 [Member] | Energy Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.78%

^[4]

C000171463 [Member] | Industrial Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

34.24%

^[4]

C000171463 [Member] | Information Technology Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

44.52%

^[4]

C000171463 [Member] | Materials Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.51%

^[4]

C000171463 [Member] | Utilities Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.25%

^[4]

C000171463 [Member] | TAIWAN

Holdings [Line Items]

Percent of Net Asset Value

17.29%

C000171463 [Member] | TÜRKIYE

Holdings [Line Items]

Percent of Net Asset Value

0.46%

C000171463 [Member] | ARGENTINA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000171463 [Member] | BRAZIL

Holdings [Line Items]

Percent of Net Asset Value

2.57%

C000171463 [Member] | CHINA

Holdings [Line Items]

Percent of Net Asset Value

5.09%

C000171463 [Member] | INDIA

Holdings [Line Items]

Percent of Net Asset Value

4.60%

C000171463 [Member] | INDONESIA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000171463 [Member] | KOREA, REPUBLIC OF

Holdings [Line Items]

Percent of Net Asset Value

63.07%

C000171463 [Member] | MEXICO

Holdings [Line Items]

Percent of Net Asset Value

1.85%

C000171463 [Member] | PERU

Holdings [Line Items]

Percent of Net Asset Value

0.44%

C000010981 [Member] | Samsung Electronics [Member]

Holdings [Line Items]

Percent of Net Asset Value

7.58%

C000010981 [Member] | Samsung C And T [Member]

Holdings [Line Items]

Percent of Net Asset Value

4.01%

C000010981 [Member] | MediaTek [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.72%

C000010981 [Member] | Reliance Industries [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.02%

C000010981 [Member] | SK hynix [Member]

Holdings [Line Items]

Percent of Net Asset Value

18.55%

^[5]

C000010981 [Member] | Taiwan Semiconductor Manufacturing [Member]

Holdings [Line Items]

Percent of Net Asset Value

13.28%

C000010981 [Member] | SK Square [Member]

Holdings [Line Items]

Percent of Net Asset Value

29.50%

^[5]

C000010981 [Member] | Alibaba Group Holding ADR [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.74%

C000010981 [Member] | Samsung Electronics Top Holding [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.10%

C000010981 [Member] | Tencent Holdings [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

C000010981 [Member] | Real Estate Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.21%

^[6]

C000010981 [Member] | Communications Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.57%

^[6]

C000010981 [Member] | Consumer Discretionary Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.89%

^[6]

C000010981 [Member] | Consumer Staples Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.79%

^[6]

C000010981 [Member] | Financial Services Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.03%

^[6]

C000010981 [Member] | Healthcare Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

^[6]

C000010981 [Member] | Energy Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.78%

^[6]

C000010981 [Member] | Industrial Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

34.24%

^[6]

C000010981 [Member] | Information Technology Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

44.52%

^[6]

C000010981 [Member] | Materials Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.51%

^[6]

C000010981 [Member] | Utilities Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.25%

^[6]

C000010981 [Member] | TAIWAN

Holdings [Line Items]

Percent of Net Asset Value

17.29%

C000010981 [Member] | TÜRKIYE

Holdings [Line Items]

Percent of Net Asset Value

0.46%

C000010981 [Member] | ARGENTINA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010981 [Member] | BRAZIL

Holdings [Line Items]

Percent of Net Asset Value

2.57%

C000010981 [Member] | CHINA

Holdings [Line Items]

Percent of Net Asset Value

5.09%

C000010981 [Member] | INDIA

Holdings [Line Items]

Percent of Net Asset Value

4.60%

C000010981 [Member] | INDONESIA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010981 [Member] | KOREA, REPUBLIC OF

Holdings [Line Items]

Percent of Net Asset Value

63.07%

C000010981 [Member] | MEXICO

Holdings [Line Items]

Percent of Net Asset Value

1.85%

C000010981 [Member] | PERU

Holdings [Line Items]

Percent of Net Asset Value

0.44%

C000031063 [Member] | Samsung Electronics [Member]

Holdings [Line Items]

Percent of Net Asset Value

7.58%

C000031063 [Member] | Samsung C And T [Member]

Holdings [Line Items]

Percent of Net Asset Value

4.01%

C000031063 [Member] | MediaTek [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.72%

C000031063 [Member] | Reliance Industries [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.02%

C000031063 [Member] | SK hynix [Member]

Holdings [Line Items]

Percent of Net Asset Value

18.55%

^[7]

C000031063 [Member] | Taiwan Semiconductor Manufacturing [Member]

Holdings [Line Items]

Percent of Net Asset Value

13.28%

C000031063 [Member] | SK Square [Member]

Holdings [Line Items]

Percent of Net Asset Value

29.50%

^[7]

C000031063 [Member] | Alibaba Group Holding ADR [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.74%

C000031063 [Member] | Samsung Electronics Top Holding [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.10%

C000031063 [Member] | Tencent Holdings [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

C000031063 [Member] | Real Estate Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.21%

^[8]

C000031063 [Member] | Communications Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.57%

^[8]

C000031063 [Member] | Consumer Discretionary Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.89%

^[8]

C000031063 [Member] | Consumer Staples Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.79%

^[8]

C000031063 [Member] | Financial Services Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.03%

^[8]

C000031063 [Member] | Healthcare Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

^[8]

C000031063 [Member] | Energy Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.78%

^[8]

C000031063 [Member] | Industrial Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

34.24%

^[8]

C000031063 [Member] | Information Technology Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

44.52%

^[8]

C000031063 [Member] | Materials Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.51%

^[8]

C000031063 [Member] | Utilities Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.25%

^[8]

C000031063 [Member] | TAIWAN

Holdings [Line Items]

Percent of Net Asset Value

17.29%

C000031063 [Member] | TÜRKIYE

Holdings [Line Items]

Percent of Net Asset Value

0.46%

C000031063 [Member] | ARGENTINA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000031063 [Member] | BRAZIL

Holdings [Line Items]

Percent of Net Asset Value

2.57%

C000031063 [Member] | CHINA

Holdings [Line Items]

Percent of Net Asset Value

5.09%

C000031063 [Member] | INDIA

Holdings [Line Items]

Percent of Net Asset Value

4.60%

C000031063 [Member] | INDONESIA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000031063 [Member] | KOREA, REPUBLIC OF

Holdings [Line Items]

Percent of Net Asset Value

63.07%

C000031063 [Member] | MEXICO

Holdings [Line Items]

Percent of Net Asset Value

1.85%

C000031063 [Member] | PERU

Holdings [Line Items]

Percent of Net Asset Value

0.44%

C000010982 [Member] | Samsung Electronics [Member]

Holdings [Line Items]

Percent of Net Asset Value

7.58%

C000010982 [Member] | Samsung C And T [Member]

Holdings [Line Items]

Percent of Net Asset Value

4.01%

C000010982 [Member] | MediaTek [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.72%

C000010982 [Member] | Reliance Industries [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.02%

C000010982 [Member] | SK hynix [Member]

Holdings [Line Items]

Percent of Net Asset Value

18.55%

^[9]

C000010982 [Member] | Taiwan Semiconductor Manufacturing [Member]

Holdings [Line Items]

Percent of Net Asset Value

13.28%

C000010982 [Member] | SK Square [Member]

Holdings [Line Items]

Percent of Net Asset Value

29.50%

^[9]

C000010982 [Member] | Alibaba Group Holding ADR [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.74%

C000010982 [Member] | Samsung Electronics Top Holding [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.10%

C000010982 [Member] | Tencent Holdings [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

C000010982 [Member] | Real Estate Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.21%

^[10]

C000010982 [Member] | Communications Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.57%

^[10]

C000010982 [Member] | Consumer Discretionary Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

2.89%

^[10]

C000010982 [Member] | Consumer Staples Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.79%

^[10]

C000010982 [Member] | Financial Services Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.03%

^[10]

C000010982 [Member] | Healthcare Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.01%

^[10]

C000010982 [Member] | Energy Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

3.78%

^[10]

C000010982 [Member] | Industrial Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

34.24%

^[10]

C000010982 [Member] | Information Technology Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

44.52%

^[10]

C000010982 [Member] | Materials Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

1.51%

^[10]

C000010982 [Member] | Utilities Sector [Member]

Holdings [Line Items]

Percent of Net Asset Value

0.25%

^[10]

C000010982 [Member] | TAIWAN

Holdings [Line Items]

Percent of Net Asset Value

17.29%

C000010982 [Member] | TÜRKIYE

Holdings [Line Items]

Percent of Net Asset Value

0.46%

C000010982 [Member] | ARGENTINA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010982 [Member] | BRAZIL

Holdings [Line Items]

Percent of Net Asset Value

2.57%

C000010982 [Member] | CHINA

Holdings [Line Items]

Percent of Net Asset Value

5.09%

C000010982 [Member] | INDIA

Holdings [Line Items]

Percent of Net Asset Value

4.60%

C000010982 [Member] | INDONESIA

Holdings [Line Items]

Percent of Net Asset Value

0.35%

C000010982 [Member] | KOREA, REPUBLIC OF

Holdings [Line Items]

Percent of Net Asset Value

63.07%

C000010982 [Member] | MEXICO

Holdings [Line Items]

Percent of Net Asset Value

1.85%

C000010982 [Member] | PERU

Holdings [Line Items]

Percent of Net Asset Value

0.44%

[1]	Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[2]	Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
[3]	Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[4]	Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
[5]	Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[6]	Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
[7]	Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[8]	Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.
[9]	Because SK Square invests most of its assets in SK hynix, these two holdings are likely to perform similarly.
[10]	Categorizations used for financial reporting purposes may differ from categorizations used for regulatory compliance and/or internal classification purposes.