v3.25.2
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2025
C000007429      
Average Annual Return [Line Items]      
Average Annual Return, Percent 8.47% 12.37% 8.31%
C000007431      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.65% 12.73% 8.24%
Without Sales Load [Member] | C000199761      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.82% 13.94% 9.24%
Without Sales Load [Member] | C000007433      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.15% 13.30% 8.60%
Without Sales Load [Member] | C000007432      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.73% 13.87% 9.20%
Without Sales Load [Member] | C000007429      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.48% 13.59% 8.90%
Without Sales Load [Member] | C000007431      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.61% 12.73% 8.24%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.17% 13.65% 9.99%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.17% 13.65% 9.99%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.17% 13.65% 9.99%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.17% 13.65% 9.99%
MSCI All Country World Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.17% 13.65% 9.99%