present invention preferred are linear alkylbenzenesulfonic acid salts having an alkyl chain of c10 c14 with being more preferably c12 c14 the counter ionic species is preferably an alkali metal salt or an amine salt with being more preferably a sodium and or a potassium a monoethanolamine or a diethanolamine examples of preferred nonionic surfactants include polyoxyalkylene c8 c20 alkyl ethers alkyl polyglycosides polyoxyalkylene c8 c20 alkylphenyl ethers polyoxyalkylene sorbitan c8 c22 fatty acid esters polyoxyalkylene glycol c8 c22 fatty acid esters and polyoxyethylene polyoxypropylene block polymers the nonionic surfactant is preferably a polyoxyalkylene alkyl ether obtained through addition of an alkylene oxide such as ethylene oxide or propylene oxide 4 to 20 mol to a c10 c18 alcohol the polyoxyalkylene alkyl ether preferably having an hlb value calculated by the griffin method of 10 5 to 15 0 more preferably 11 0 to 14 5 a divalent metal ion trapping agent is incorporated in an amount of 0 01 to 50 mass preferably 5 to 40 mass examples of the divalent metal ion trapping agent to be employed in the detergent composition of the present invention include condensed phosphoric acid salts such as tripolyphosphoric acid salts pyrophosphoric acid salts and orthophosphoric acid salts aluminosilicates such as zeolite synthetic layered crystalline silicic acid salts nitrilotriacetic acid salts ethylenediaminetetraacetic acid salts citric acid salts isocitric acid salts and polyacetal carboxylic acid salts of these crystalline aluminosilicates.