v3.22.4
Noncontrolling Interests (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Changes in Ownership Interests in Less Than 100% Owned Subsidiaries [Abstract]      
Net income attributed to Omnicom Group Inc. $ 1,316.5 $ 1,407.8 $ 945.4
Net transfers (to) from noncontrolling interests (17.1) (12.2) 5.8
Change from net income attributed to Omnicom Group Inc. and transfers (to) from noncontrolling interests $ 1,299.4 $ 1,395.6 $ 951.2