Shareholder Report, Holdings (Details)	May 31, 2025
C000000149 [Member] | NVIDIA Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.90%	[1]
C000000149 [Member] | Microsoft Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.10%	[1]
C000000149 [Member] | Apple Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%	[1]
C000000149 [Member] | Amazon com Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%	[1]
C000000149 [Member] | JPMorgan Chase And Co [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.90%	[1]
C000000149 [Member] | Costco Wholesale Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%	[1]
C000000149 [Member] | Intuit Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%	[1]
C000000149 [Member] | The Goldman Sachs Group Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%	[1]
C000000149 [Member] | Mastercard Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%	[1]
C000000149 [Member] | Alphabet Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%	[1]
C000000149 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000000149 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000000149 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000000149 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000000149 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000000149 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000000149 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	33.90%
C000000149 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000000149 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000000149 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000000149 [Member] | Net Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.00%)	[2]
C000000151 [Member] | NVIDIA Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.90%	[3]
C000000151 [Member] | Microsoft Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.10%	[3]
C000000151 [Member] | Apple Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%	[3]
C000000151 [Member] | Amazon com Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%	[3]
C000000151 [Member] | JPMorgan Chase And Co [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.90%	[3]
C000000151 [Member] | Costco Wholesale Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%	[3]
C000000151 [Member] | Intuit Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%	[3]
C000000151 [Member] | The Goldman Sachs Group Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%	[3]
C000000151 [Member] | Mastercard Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%	[3]
C000000151 [Member] | Alphabet Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%	[3]
C000000151 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000000151 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000000151 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000000151 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000000151 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000000151 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000000151 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	33.90%
C000000151 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000000151 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000000151 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000000151 [Member] | Net Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.00%	[4]
C000000152 [Member] | NVIDIA Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.90%	[5]
C000000152 [Member] | Microsoft Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.10%	[5]
C000000152 [Member] | Apple Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%	[5]
C000000152 [Member] | Amazon com Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%	[5]
C000000152 [Member] | JPMorgan Chase And Co [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.90%	[5]
C000000152 [Member] | Costco Wholesale Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%	[5]
C000000152 [Member] | Intuit Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%	[5]
C000000152 [Member] | The Goldman Sachs Group Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%	[5]
C000000152 [Member] | Mastercard Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%	[5]
C000000152 [Member] | Alphabet Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%	[5]
C000000152 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000000152 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000000152 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000000152 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000000152 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000000152 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000000152 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	33.90%
C000000152 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000000152 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000000152 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000000152 [Member] | Net Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.00%)	[6]
C000174003 [Member] | NVIDIA Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.90%	[7]
C000174003 [Member] | Microsoft Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.10%	[7]
C000174003 [Member] | Apple Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%	[7]
C000174003 [Member] | Amazon com Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%	[7]
C000174003 [Member] | JPMorgan Chase And Co [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.90%	[7]
C000174003 [Member] | Costco Wholesale Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%	[7]
C000174003 [Member] | Intuit Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%	[7]
C000174003 [Member] | The Goldman Sachs Group Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%	[7]
C000174003 [Member] | Mastercard Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%	[7]
C000174003 [Member] | Alphabet Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%	[7]
C000174003 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000174003 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000174003 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000174003 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000174003 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000174003 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000174003 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	33.90%
C000174003 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000174003 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000174003 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000174003 [Member] | Net Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.00%)	[8]
C000000154 [Member] | NVIDIA Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.90%	[9]
C000000154 [Member] | Microsoft Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	8.10%	[9]
C000000154 [Member] | Apple Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%	[9]
C000000154 [Member] | Amazon com Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	4.60%	[9]
C000000154 [Member] | JPMorgan Chase And Co [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.90%	[9]
C000000154 [Member] | Costco Wholesale Corp [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.40%	[9]
C000000154 [Member] | Intuit Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.10%	[9]
C000000154 [Member] | The Goldman Sachs Group Inc [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.40%	[9]
C000000154 [Member] | Mastercard Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.50%	[9]
C000000154 [Member] | Alphabet Inc Cl A [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%	[9]
C000000154 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	16.60%
C000000154 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	12.10%
C000000154 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.80%
C000000154 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	5.80%
C000000154 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.10%
C000000154 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	14.10%
C000000154 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	33.90%
C000000154 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000000154 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.60%
C000000154 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.80%
C000000154 [Member] | Net Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.00%)	[10]

[1] Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.

[2] Amount represents less than .01%.

[3] Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.

[4] Amount represents less than .01%.

[5] Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.

[6] Amount represents less than .01%.

[7] Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.

[8] Amount represents less than .01%.

[9] Excludes money market funds or other short-term securities held for the investment of cash and cash collateral for securities loaned, if any.

[10] Amount represents less than .01%.