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
C000005587      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.98% 10.89% 5.22%
C000005589      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.34% 11.27% 5.13%
Without Sales Load [Member] | C000199787      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.54% 12.45% 6.11%
Without Sales Load [Member] | C000005591      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.96% 11.75% 5.36%
Without Sales Load [Member] | C000005590      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.52% 12.37% 6.03%
Without Sales Load [Member] | C000005587      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.18% 12.10% 5.79%
Without Sales Load [Member] | C000005589      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.34% 11.27% 5.13%
MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.73% 11.16% 6.51%
MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.73% 11.16% 6.51%
MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.73% 11.16% 6.51%
MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.73% 11.16% 6.51%
MSCI EAFE Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.73% 11.16% 6.51%
MSCI EMU Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.93% 13.12% 7.43%
MSCI EMU Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.93% 13.12% 7.43%
MSCI EMU Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.93% 13.12% 7.43%
MSCI EMU Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.93% 13.12% 7.43%
MSCI EMU Index (Net)      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.93% 13.12% 7.43%