v3.26.1
Consolidated Statements of Comprehensive Income - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net Income $ 605.5 $ 277.8 $ 1,024.2 $ 581.2
Cash flow hedge:        
Amortization of loss included in interest expense 0.0 1.2 1.3 2.7
Income tax effect 0.0 (0.4) (0.4) (0.8)
Cash flow hedge, net of tax 0.0 0.8 0.9 1.9
Pension and other postemployment benefits:        
Amortization of prior service cost 1.8 1.7 3.6 3.4
Amortization of actuarial losses (0.5) 0.0 (1.1) 0.5
Income tax effect (4.7) (1.2) (2.4) (3.0)
Pension plans and other postemployment benefits, net of tax (3.4) 0.5 0.1 0.9
Foreign currency translation adjustment 19.2 132.2 (36.8) 215.8
Other Comprehensive Income (Loss) 15.8 133.5 (35.8) 218.6
Comprehensive Income 621.3 411.3 988.4 799.8
Comprehensive Income Attributed To Noncontrolling Interests 20.1 28.8 30.2 49.5
Comprehensive Income - Omnicom Group Inc. $ 601.2 $ 382.5 $ 958.2 $ 750.3