S 000007001 Summary [Member] Prospectus Summary Prospectus Summary S 000007001 [Member] Small-Cap Value Series Small-Cap Value Series S 000006998 Summary1 [Member] Prospectus Summary Prospectus Summary S 000006998 [Member] Lord Abbett Dividend Growth Fund Lord Abbett Dividend Growth Fund C 000019088 [Member] Class A Shares Class A Shares C 000019090 [Member] Class C Shares Class C Shares C 000054712 [Member] Class F Shares Class F Shares C 000188280 [Member] Class F3 Shares Class F3 Shares C 000019092 [Member] Class I Shares Class I Shares C 000019091 [Member] Class P Shares Class P Shares C 000054713 [Member] Class R2 Shares Class R2 Shares C 000054714 [Member] Class R3 Shares Class R3 Shares C 000156653 [Member] Class R4 Shares Class R4 Shares C 000156654 [Member] Class R5 Shares Class R5 Shares C 000156655 [Member] Class R6 Shares Class R6 Shares cik0000887194_PRINCIPALRISKS2Member [Member] PRINCIPAL RISKS PRINCIPAL RISKS cik0000887194_PortfolioManagementRisk2Member [Member] · 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Risk Money Market Fund May Not Preserve Dollar [Member] Risks [Table Text Block] Risks [Table Text Block]