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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Net income attributable to Colgate-Palmolive Company        
Basic EPS $ 634 $ 698 $ 2,018 $ 2,048
Diluted EPS $ 634 $ 698 $ 2,018 $ 2,048
Shares (millions)        
Basic EPS (in shares) 843,600,000 859,000,000.0 845,900,000 857,700,000
Stock options and restricted stock units (in shares) 2,800,000 2,800,000 3,100,000 1,800,000
Diluted EPS (in shares) 846,400,000 861,800,000 849,000,000.0 859,500,000
Per Share        
Basic EPS (in dollars per share) $ 0.75 $ 0.81 $ 2.39 $ 2.39
Diluted EPS (in dollars per share) $ 0.75 $ 0.81 $ 2.38 $ 2.38
Antidilutive securities excluded from computation of earnings per share (in shares) 2,318,391 2,693,996 2,763,779 15,862,643