v3.26.1
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
C000007429      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.25% 11.25% 12.62%
C000007431      
Average Annual Return [Line Items]      
Average Annual Return, Percent 29.21% 11.61% 12.55%
Without Sales Load [Member] | C000199761      
Average Annual Return [Line Items]      
Average Annual Return, Percent 31.50% 12.79% 13.58%
Without Sales Load [Member] | C000007433      
Average Annual Return [Line Items]      
Average Annual Return, Percent 30.83% 12.17% 12.93%
Without Sales Load [Member] | C000007432      
Average Annual Return [Line Items]      
Average Annual Return, Percent 31.50% 12.74% 13.54%
Without Sales Load [Member] | C000007429      
Average Annual Return [Line Items]      
Average Annual Return, Percent 31.14% 12.45% 13.23%
Without Sales Load [Member] | C000007431      
Average Annual Return [Line Items]      
Average Annual Return, Percent 30.21% 11.61% 12.55%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.67% 10.98% 12.78%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.67% 10.98% 12.78%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.67% 10.98% 12.78%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.67% 10.98% 12.78%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.67% 10.98% 12.78%