Shareholder Report, Holdings (Details)	Apr. 30, 2026
C000175723 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000175724 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000175725 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000175726 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000175727 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	99.60%
C000175727 [Member] \| Common Stock Rights [Member]
Holdings [Line Items]
Percent of Total Investments	0.00%
C000175727 [Member] \| Investments Purchased with Collateral from Securities Lending [Member]
Holdings [Line Items]
Percent of Total Investments	0.40%
C000183268 [Member] \| Other [Member]
Holdings [Line Items]
Percent of Total Investments	17.20%
C000183268 [Member] \| AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	6.60%
C000183268 [Member] \| FRANCE
Holdings [Line Items]
Percent of Total Investments	8.20%
C000183268 [Member] \| GERMANY
Holdings [Line Items]
Percent of Total Investments	9.00%
C000183268 [Member] \| ITALY
Holdings [Line Items]
Percent of Total Investments	2.90%
C000183268 [Member] \| JAPAN
Holdings [Line Items]
Percent of Total Investments	23.40%
C000183268 [Member] \| NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	5.00%
C000183268 [Member] \| SPAIN
Holdings [Line Items]
Percent of Total Investments	4.10%
C000183268 [Member] \| SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	7.80%
C000183268 [Member] \| UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	10.80%
C000183268 [Member] \| UNITED STATES
Holdings [Line Items]
Percent of Total Investments	5.00%
C000183268 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	99.80%
C000183268 [Member] \| Investments Purchased with Collateral from Securities Lending [Member]
Holdings [Line Items]
Percent of Total Investments	0.20%
C000183269 [Member] \| Other [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%
C000183269 [Member] \| UNITED ARAB EMIRATES
Holdings [Line Items]
Percent of Total Investments	1.30%
C000183269 [Member] \| TAIWAN
Holdings [Line Items]
Percent of Total Investments	25.70%
C000183269 [Member] \| SOUTH AFRICA
Holdings [Line Items]
Percent of Total Investments	2.70%
C000183269 [Member] \| SAUDI ARABIA
Holdings [Line Items]
Percent of Total Investments	3.00%
C000183269 [Member] \| POLAND
Holdings [Line Items]
Percent of Total Investments	1.20%
C000183269 [Member] \| MEXICO
Holdings [Line Items]
Percent of Total Investments	1.90%
C000183269 [Member] \| KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	17.00%
C000183269 [Member] \| INDIA
Holdings [Line Items]
Percent of Total Investments	11.50%
C000183269 [Member] \| CHINA
Holdings [Line Items]
Percent of Total Investments	24.10%
C000183269 [Member] \| BRAZIL
Holdings [Line Items]
Percent of Total Investments	4.10%
C000183269 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	98.90%
C000183269 [Member] \| Investments Purchased with Collateral from Securities Lending [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%
C000206035 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000228786 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	100.00%
C000230537 [Member] \| Common Stock [Member]
Holdings [Line Items]
Percent of Total Investments	99.80%
C000230537 [Member] \| Investments Companies [Member]
Holdings [Line Items]
Percent of Total Investments	0.20%