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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Net income attributable to Colgate-Palmolive Company        
Basic EPS $ 703 $ 635 $ 1,384 $ 1,350
Diluted EPS $ 703 $ 635 $ 1,384 $ 1,350
Shares (millions)        
Basic EPS (in shares) 845,600,000 857,400,000 847,000,000.0 857,100,000
Stock options and restricted stock units (in shares) 3,800,000 1,500,000 3,400,000 1,500,000
Diluted EPS (in shares) 849,400,000 858,900,000 850,400,000 858,600,000
Per Share        
Basic EPS (in dollars per share) $ 0.83 $ 0.74 $ 1.63 $ 1.58
Diluted EPS (in dollars per share) $ 0.83 $ 0.74 $ 1.63 $ 1.57
Antidilutive securities excluded from computation of earnings per share (in shares) 1,634,728 19,291,359 2,453,048 19,717,653