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Feb. 23, 2024
shares
Cover [Abstract]  
Entity Central Index Key 0001308335
Amendment Flag false
Document Type DEF 14A
Entity Registrant Name Eaton Vance Enhanced Equity Income Fund II
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Securities [Table Text Block]

Fund No. of Common Shares
Outstanding on
January 30, 2024
Enhanced Equity Fund 52,307,415
Risk-Managed Fund 67,301,787
Buy-Write Income Fund 29,374,715
Buy-Write Opportunities Fund 116,754,568
Global Buy-Write Opportunities Fund 109,597,786
Common Shares Enhanced Equity Fund [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Enhanced Equity Fund
Outstanding Security, Held [Shares] 52,307,415
Common Shares Risk-Managed Fund [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Risk-Managed Fund
Outstanding Security, Held [Shares] 67,301,787
Common Shares Buy-Write Income Fund [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Buy-Write Income Fund
Outstanding Security, Held [Shares] 29,374,715
Common Shares Buy-Write Opportunities Fund [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Buy-Write Opportunities Fund
Outstanding Security, Held [Shares] 116,754,568
Common Shares Global Buy-Write Opportunities Fund [Member]  
Capital Stock, Long-Term Debt, and Other Securities [Abstract]  
Outstanding Security, Title [Text Block] Global Buy-Write Opportunities Fund
Outstanding Security, Held [Shares] 109,597,786