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Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Net income attributable to Colgate-Palmolive Company                      
Basic EPS                 $ 2,695 $ 2,367 $ 2,400
Diluted EPS                 $ 2,695 $ 2,367 $ 2,400
Shares (millions)                      
Basic EPS (in shares)                 856.8 859.1 870.6
Stock options and restricted stock units (in shares)                 2.5 2.0 2.4
Diluted EPS (in shares)                 859.3 861.1 873.0
Earnings Per Share, Basic [Abstract]                      
Basic EPS (in dollars per share) $ 0.76 $ 0.81 $ 0.74 $ 0.83 $ 0.75 $ 0.67 $ 0.68 $ 0.65 $ 3.15 $ 2.76 $ 2.76
Earnings Per Share, Diluted [Abstract]                      
Diluted EPS (in dollars per share) $ 0.75 $ 0.81 $ 0.74 $ 0.83 $ 0.75 $ 0.67 $ 0.68 $ 0.65 $ 3.14 $ 2.75 $ 2.75