v3.25.2
Shareholder Report, Average Annual Return (Details)
12 Months Ended 60 Months Ended 120 Months Ended
Jul. 31, 2025
Jul. 31, 2025
Jul. 31, 2025
C000205001_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205001_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000205001_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000014532_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014532_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014532_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014533_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014533_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014533_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014531_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014531_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014531_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014529_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014529_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014529_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205000_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205000_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014527_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014527_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014527_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014528_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014528_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014528_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014526_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014526_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014526_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014524_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014524_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014524_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205004_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205004_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014552_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014552_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014552_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014553_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014553_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014553_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014551_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014551_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014551_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014549_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014549_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014549_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205008_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205008_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014572_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014572_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014572_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014573_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014573_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014573_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014571_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014571_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014571_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014569_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014569_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014569_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205003_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205003_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014542_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014542_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014542_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014543_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014543_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014543_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014541_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014541_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014541_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014539_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014539_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014539_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205006_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205006_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000205006_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000014562_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014562_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014562_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014563_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014563_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014563_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014561_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014561_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014561_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014559_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014559_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014559_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205005_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205005_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014557_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014557_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014557_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014558_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014558_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014558_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014556_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014556_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014556_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014554_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014554_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014554_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205007_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205007_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014567_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014567_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014567_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014568_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014568_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014568_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014566_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014566_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014566_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014564_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014564_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014564_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205002_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000205002_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014537_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014537_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014537_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014538_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014538_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014538_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014536_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014536_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014536_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014534_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014534_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014534_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000204999_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000204999_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000204999_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000014522_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014522_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014522_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014523_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014523_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014523_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014521_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014521_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014521_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000014519_1_BBIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.33%    
C000014519_1_BBIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   15.88%  
C000014519_1_BBIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     13.66%
C000205000_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205004_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205008_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205003_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205005_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205007_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205002_1_BBIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.84%    
C000205001_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.16%    
C000205001_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   14.19%  
C000205001_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.41%    
C000205001_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.74%    
C000205001_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.42%  
C000205001_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.15%    
C000014532_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.16%    
C000014532_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.64%  
C000014532_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.41%
C000014532_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.41%    
C000014532_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.44%  
C000014532_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.80%
C000014532_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.74%    
C000014532_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.42%  
C000014532_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.46%
C000014533_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.02%    
C000014533_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   14.05%  
C000014533_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.41%
C000014533_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.74%    
C000014533_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.42%  
C000014533_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.46%
C000014531_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.78%    
C000014531_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.89%  
C000014531_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.44%
C000014531_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.78%    
C000014531_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.89%  
C000014531_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.44%
C000014531_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.74%    
C000014531_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.42%  
C000014531_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.46%
C000014529_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.72%    
C000014529_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.41%  
C000014529_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.46%
C000014529_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.72%    
C000014529_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   13.75%  
C000014529_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.11%
C000014529_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.74%    
C000014529_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.42%  
C000014529_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.46%
C000205000_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.52%    
C000205000_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   20.37%  
C000205000_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.97%    
C000205000_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.28%    
C000205000_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014527_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.43%    
C000014527_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.78%  
C000014527_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.57%
C000014527_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.77%    
C000014527_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.63%  
C000014527_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     22.00%
C000014527_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.28%    
C000014527_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014527_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.37%
C000014528_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.38%    
C000014528_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   20.23%  
C000014528_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     22.64%
C000014528_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.28%    
C000014528_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014528_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.37%
C000014526_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.14%    
C000014526_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.01%  
C000014526_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.57%
C000014526_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.14%    
C000014526_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.01%  
C000014526_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.57%
C000014526_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.28%    
C000014526_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014526_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.37%
C000014524_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 16.93%    
C000014524_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.50%  
C000014524_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.58%
C000014524_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.06%    
C000014524_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.92%  
C000014524_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     22.30%
C000014524_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.28%    
C000014524_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014524_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     21.37%
C000205004_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.14%    
C000205004_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   32.58%  
C000205004_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 30.05%    
C000205004_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.02%    
C000205004_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.38%  
C000014552_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.10%    
C000014552_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   30.81%  
C000014552_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.00%
C000014552_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.38%    
C000014552_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.74%  
C000014552_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.45%
C000014552_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.02%    
C000014552_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.38%  
C000014552_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     28.27%
C000014553_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.00%    
C000014553_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   32.41%  
C000014553_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     28.18%
C000014553_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.02%    
C000014553_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.38%  
C000014553_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     28.27%
C000014551_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.78%    
C000014551_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.07%  
C000014551_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.04%
C000014551_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.78%    
C000014551_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.07%  
C000014551_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.04%
C000014551_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.02%    
C000014551_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.38%  
C000014551_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     28.27%
C000014549_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.64%    
C000014549_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   30.52%  
C000014549_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.07%
C000014549_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 22.69%    
C000014549_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   32.07%  
C000014549_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     27.82%
C000014549_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 17.02%    
C000014549_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   31.38%  
C000014549_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     28.27%
C000205008_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.44%    
C000205008_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.52%  
C000205008_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.83%    
C000205008_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.63%    
C000205008_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.87%  
C000014572_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (1.78%)    
C000014572_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.11%  
C000014572_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.98%
C000014572_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.79%    
C000014572_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.85%  
C000014572_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.35%
C000014572_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.63%    
C000014572_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.87%  
C000014572_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.87%
C000014573_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.32%    
C000014573_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.33%  
C000014573_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.85%
C000014573_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.63%    
C000014573_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.87%  
C000014573_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.87%
C000014571_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 0.34%    
C000014571_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.28%  
C000014571_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.94%
C000014571_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.27%    
C000014571_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.28%  
C000014571_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.94%
C000014571_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.63%    
C000014571_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.87%  
C000014571_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.87%
C000014569_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.81%)    
C000014569_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.84%  
C000014569_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     2.97%
C000014569_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.06%    
C000014569_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.07%  
C000014569_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.58%
C000014569_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.63%    
C000014569_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.87%  
C000014569_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.87%
C000205003_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 26.20%    
C000205003_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.23%  
C000205003_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.35%    
C000205003_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.40%    
C000205003_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.10%  
C000014542_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 21.01%    
C000014542_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   17.62%  
C000014542_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.26%
C000014542_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 25.40%    
C000014542_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.46%  
C000014542_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.65%
C000014542_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.40%    
C000014542_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.10%  
C000014542_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.71%
C000014543_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 26.05%    
C000014543_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.08%  
C000014543_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.25%
C000014543_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.40%    
C000014543_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.10%  
C000014543_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.71%
C000014541_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 23.73%    
C000014541_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   17.86%  
C000014541_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.27%
C000014541_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 24.73%    
C000014541_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   17.86%  
C000014541_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.27%
C000014541_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.40%    
C000014541_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.10%  
C000014541_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.71%
C000014539_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.47%    
C000014539_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   17.36%  
C000014539_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.28%
C000014539_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 25.70%    
C000014539_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.76%  
C000014539_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.94%
C000014539_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.40%    
C000014539_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   18.10%  
C000014539_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.71%
C000205006_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (6.07%)    
C000205006_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.33%  
C000205006_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.63%    
C000205006_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.70%)    
C000205006_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.09%  
C000205006_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 5.98%    
C000014562_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (9.91%)    
C000014562_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   0.97%  
C000014562_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.61%
C000014562_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (6.64%)    
C000014562_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.69%  
C000014562_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.98%
C000014562_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.70%)    
C000014562_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.09%  
C000014562_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.97%
C000014563_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (6.17%)    
C000014563_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   2.21%  
C000014563_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.52%
C000014563_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.70%)    
C000014563_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.09%  
C000014563_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.97%
C000014561_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.89%)    
C000014561_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.18%  
C000014561_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.62%
C000014561_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.10%)    
C000014561_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.18%  
C000014561_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.62%
C000014561_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.70%)    
C000014561_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.09%  
C000014561_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.97%
C000014559_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (11.78%)    
C000014559_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   0.75%  
C000014559_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.63%
C000014559_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (6.40%)    
C000014559_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   1.95%  
C000014559_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.25%
C000014559_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.70%)    
C000014559_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.09%  
C000014559_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.97%
C000205005_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.89%    
C000205005_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   21.11%  
C000205005_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.14%    
C000205005_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.22%    
C000205005_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.42%  
C000014557_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.90%    
C000014557_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.47%  
C000014557_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.76%
C000014557_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.10%    
C000014557_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   20.32%  
C000014557_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.15%
C000014557_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.22%    
C000014557_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.42%  
C000014557_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.92%
C000014558_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.75%    
C000014558_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   20.95%  
C000014558_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.75%
C000014558_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.22%    
C000014558_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.42%  
C000014558_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.92%
C000014556_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 18.53%    
C000014556_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.72%  
C000014556_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.77%
C000014556_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 19.53%    
C000014556_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.72%  
C000014556_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.77%
C000014556_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.22%    
C000014556_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.42%  
C000014556_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.92%
C000014554_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.49%    
C000014554_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.20%  
C000014554_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.78%
C000014554_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.42%    
C000014554_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   20.62%  
C000014554_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.44%
C000014554_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.22%    
C000014554_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   19.42%  
C000014554_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     11.92%
C000205007_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (4.90%)    
C000205007_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.71%  
C000205007_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 5.52%    
C000205007_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.19%)    
C000205007_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.27%  
C000014567_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (8.81%)    
C000014567_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   23.97%  
C000014567_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.98%
C000014567_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (5.50%)    
C000014567_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   24.85%  
C000014567_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.36%
C000014567_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.19%)    
C000014567_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.27%  
C000014567_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.19%
C000014568_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (5.01%)    
C000014568_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.54%  
C000014568_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.94%
C000014568_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.19%)    
C000014568_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.27%  
C000014568_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.19%
C000014566_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (6.91%)    
C000014566_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   24.25%  
C000014566_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.02%
C000014566_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (5.98%)    
C000014566_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   24.25%  
C000014566_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.02%
C000014566_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.19%)    
C000014566_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.27%  
C000014566_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.19%
C000014564_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (10.72%)    
C000014564_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   23.71%  
C000014564_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.01%
C000014564_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (5.27%)    
C000014564_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.18%  
C000014564_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.63%
C000014564_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (3.19%)    
C000014564_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   25.27%  
C000014564_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     6.19%
C000205002_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.88%    
C000205002_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.84%  
C000205002_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.79%    
C000205002_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.78%    
C000205002_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.42%  
C000014537_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 10.16%    
C000014537_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.33%  
C000014537_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.92%
C000014537_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.16%    
C000014537_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.11%  
C000014537_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.31%
C000014537_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.78%    
C000014537_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.42%  
C000014537_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.77%
C000014538_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.74%    
C000014538_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.69%  
C000014538_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.91%
C000014538_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.78%    
C000014538_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.42%  
C000014538_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.77%
C000014536_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.57%    
C000014536_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.57%  
C000014536_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.94%
C000014536_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 13.57%    
C000014536_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.57%  
C000014536_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.94%
C000014536_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.78%    
C000014536_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.42%  
C000014536_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.77%
C000014534_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.86%    
C000014534_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   9.10%  
C000014534_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     9.95%
C000014534_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 14.44%    
C000014534_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   10.40%  
C000014534_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     10.60%
C000014534_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 15.78%    
C000014534_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   12.42%  
C000014534_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     12.77%
C000204999_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.24%)    
C000204999_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.33%  
C000204999_NoLoadClassMember_2024-08-01_2025-07-31Member      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.72%    
C000204999_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.12%)    
C000204999_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   6.21%  
C000204999_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.64%    
C000014522_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (11.03%)    
C000014522_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.89%  
C000014522_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.05%
C000014522_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.81%)    
C000014522_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.63%  
C000014522_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.41%
C000014522_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.12%)    
C000014522_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   6.21%  
C000014522_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.16%
C000014523_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.32%)    
C000014523_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   5.20%  
C000014523_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     4.00%
C000014523_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.12%)    
C000014523_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   6.21%  
C000014523_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.16%
C000014521_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (9.11%)    
C000014521_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.13%  
C000014521_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.10%
C000014521_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (8.25%)    
C000014521_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.13%  
C000014521_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.10%
C000014521_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.12%)    
C000014521_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   6.21%  
C000014521_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.16%
C000014519_ClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (12.92%)    
C000014519_ClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   3.68%  
C000014519_ClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.10%
C000014519_NoLoadClassMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.60%)    
C000014519_NoLoadClassMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   4.91%  
C000014519_NoLoadClassMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     3.71%
C000014519_0_AdditionalIndexMember_1YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent (7.12%)    
C000014519_0_AdditionalIndexMember_5YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent   6.21%  
C000014519_0_AdditionalIndexMember_10YRMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent     5.16%
C000205000_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 20.72%    
C000205004_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 29.34%    
C000205008_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.29%    
C000205003_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.03%    
C000205005_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 11.87%    
C000205007_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.05%    
C000205002_0_AdditionalIndexMember_LOCMember      
Average Annual Return [Line Items]      
Average Annual Return, Percent 12.76%