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Consolidated Statements of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Comprehensive Income [Abstract] |  |  |
NET INCOME | $ 673.9 | $ 637.7 | $ 570.4
Foreign Currency Translation: |  |  |
Foreign currency translation adjustments | 11.3 | (149.6) | 133.7
Reclassification adjustments recognized in net income | 6.7 | 15.7 | 1.1
Foreign currency translation, net of tax | 18.0 | (133.9) | 134.8
Available-for-sale securities: |  |  |
Changes in fair value of available-for-sale securities | 0.0 | 0.0 | 0.0
Recognition of previously unrealized gains in net income | (0.0) | (0.0) | (0.7)
Income tax effect | (0.0) | (0.0) | 0.1
Available-for-sale securities, net of tax | 0.0 | 0.0 | (0.6)
Derivatives instruments: |  |  |
Recognition of previously unrealized losses included in net income | 2.3 | 2.2 | 2.1
Income tax effect | (0.5) | (0.7) | (0.5)
Derivative instruments, net of tax | 1.8 | 1.5 | 1.6
Defined benefit pension and other postretirement plans: |  |  |
Net actuarial (losses) gains for the period | (14.8) | 12.6 | (13.6)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax | 6.7 | 7.5 | 6.9
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment | 0.0 | (1.0) | 6.8
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Other, before Tax | (2.5) | (1.0) | 2.7
Income tax effect | 1.2 | (1.8) | (0.5)
Defined benefit pension and other postretirement plans, net of tax | (9.4) | 16.3 | 2.3
Other comprehensive income (loss), net of tax | 10.4 | (116.1) | 138.1
Total comprehensive income | 684.3 | 521.6 | 708.5
Less: comprehensive income attributable to noncontrolling interests | 17.2 | 16.0 | 17.5
Comprehensive Income Attributable to IPG | $ 667.1 | $ 505.6 | $ 691.0

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