v3.26.3
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Jul. 31, 2026
Jul. 31, 2026
Jul. 31, 2026
C000205004_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000205004_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000205004_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.56%    
C000014552_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014552_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014552_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014553_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014553_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014553_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014551_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014551_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014551_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014549_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014549_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014549_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000205003_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000205003_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000205003_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.56%    
C000014542_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014542_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014542_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014543_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014543_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014543_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014541_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014541_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014541_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014539_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014539_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014539_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000205005_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000205005_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000205005_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.56%    
C000014557_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014557_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014557_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014558_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014558_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014558_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014556_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014556_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014556_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014554_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014554_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014554_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000204999_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000204999_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000204999_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.56%    
C000014522_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014522_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014522_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014523_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014523_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014523_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014521_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014521_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014521_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014519_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014519_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014519_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000205006_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000205006_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000205006_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.56%    
C000014562_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014562_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014562_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014563_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014563_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014563_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014561_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014561_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014561_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000014559_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.56%    
C000014559_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.86%  
C000014559_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     15.08%
C000205004_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 84.77%    
C000205004_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.93%  
C000205004_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 36.01%    
C000205004_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.33%    
C000205004_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.31%  
C000205004_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 35.23%    
C000014552_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 77.21%    
C000014552_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   34.13%  
C000014552_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     32.52%
C000014552_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.64%    
C000014552_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.09%  
C000014552_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     32.99%
C000014552_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.33%    
C000014552_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.31%  
C000014552_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.35%
C000014553_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 84.55%    
C000014553_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.77%  
C000014553_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.73%
C000014553_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.33%    
C000014553_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.31%  
C000014553_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.35%
C000014551_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 81.71%    
C000014551_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   34.41%  
C000014551_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     32.56%
C000014551_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 82.71%    
C000014551_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   34.41%  
C000014551_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     32.56%
C000014551_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.33%    
C000014551_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.31%  
C000014551_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.35%
C000014549_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 73.51%    
C000014549_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   33.83%  
C000014549_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     32.57%
C000014549_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 84.09%    
C000014549_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.42%  
C000014549_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.36%
C000014549_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 83.33%    
C000014549_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   35.31%  
C000014549_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     33.35%
C000205003_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.79%    
C000205003_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   16.60%  
C000205003_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.52%    
C000205003_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.05%    
C000205003_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000205003_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.02%    
C000014542_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.80%    
C000014542_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.03%  
C000014542_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.88%
C000014542_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.04%    
C000014542_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.86%  
C000014542_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.28%
C000014542_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.05%    
C000014542_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000014542_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.84%
C000014543_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.64%    
C000014543_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   16.46%  
C000014543_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.87%
C000014543_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.05%    
C000014543_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000014543_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.84%
C000014541_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.44%    
C000014541_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.28%  
C000014541_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.89%
C000014541_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.44%    
C000014541_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.28%  
C000014541_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.89%
C000014541_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.05%    
C000014541_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000014541_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.84%
C000014539_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.37%    
C000014539_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   14.78%  
C000014539_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.90%
C000014539_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.35%    
C000014539_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   16.15%  
C000014539_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.57%
C000014539_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.05%    
C000014539_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000014539_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.84%
C000205005_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.42%    
C000205005_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.48%  
C000205005_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.68%    
C000205005_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.82%    
C000205005_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.76%  
C000205005_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.99%    
C000014557_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.58%    
C000014557_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.95%  
C000014557_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.23%
C000014557_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.66%    
C000014557_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.75%  
C000014557_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.63%
C000014557_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.82%    
C000014557_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.76%  
C000014557_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.43%
C000014558_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.25%    
C000014558_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.34%  
C000014558_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     14.24%
C000014558_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.82%    
C000014558_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.76%  
C000014558_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.43%
C000014556_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.06%    
C000014556_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.18%  
C000014556_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.24%
C000014556_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.06%    
C000014556_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.18%  
C000014556_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.24%
C000014556_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.82%    
C000014556_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.76%  
C000014556_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.43%
C000014554_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.24%    
C000014554_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.70%  
C000014554_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.25%
C000014554_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.96%    
C000014554_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.03%  
C000014554_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.92%
C000014554_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.82%    
C000014554_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.76%  
C000014554_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.43%
C000204999_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 62.81%    
C000204999_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.01%  
C000204999_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.63%    
C000204999_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 44.59%    
C000204999_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.55%  
C000204999_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.86%    
C000014522_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 56.11%    
C000014522_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.48%  
C000014522_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.85%
C000014522_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 61.77%    
C000014522_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.28%  
C000014522_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.25%
C000014522_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 44.59%    
C000014522_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.55%  
C000014522_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.57%
C000014523_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 62.58%    
C000014523_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.87%  
C000014523_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.87%
C000014523_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 44.59%    
C000014523_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.55%  
C000014523_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.57%
C000014521_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 59.99%    
C000014521_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.74%  
C000014521_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.90%
C000014521_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 60.99%    
C000014521_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.74%  
C000014521_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.90%
C000014521_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 44.59%    
C000014521_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.55%  
C000014521_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.57%
C000014519_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 52.88%    
C000014519_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   11.25%  
C000014519_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.91%
C000014519_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 62.21%    
C000014519_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.57%  
C000014519_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.57%
C000014519_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 44.59%    
C000014519_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.55%  
C000014519_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.57%
C000205006_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 30.10%    
C000205006_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.80%  
C000205006_NoLoadClassMember_2025-08-01_2026-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.58%    
C000205006_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.51%    
C000205006_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.15%  
C000205006_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 8.62%    
C000014562_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.76%    
C000014562_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.42%  
C000014562_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.47%
C000014562_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 29.28%    
C000014562_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.15%  
C000014562_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.86%
C000014562_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.51%    
C000014562_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.15%  
C000014562_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.98%
C000014563_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 29.93%    
C000014563_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.67%  
C000014563_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.42%
C000014563_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.51%    
C000014563_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.15%  
C000014563_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.98%
C000014561_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 27.64%    
C000014561_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.64%  
C000014561_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.49%
C000014561_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.64%    
C000014561_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.64%  
C000014561_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.49%
C000014561_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.51%    
C000014561_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.15%  
C000014561_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.98%
C000014559_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.17%    
C000014559_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.19%  
C000014559_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     8.49%
C000014559_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 29.62%    
C000014559_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.41%  
C000014559_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.14%
C000014559_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 28.51%    
C000014559_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.15%  
C000014559_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.98%