XML 95 R82.htm IDEA: XBRL DOCUMENT
v3.22.4

Employee Benefits Fair Value of Pension Plan Assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Retirement Benefits [Abstract] |
Fair Value of Pension Plan Assets [Table Text Block] | The following table presents the fair value of our domestic and foreign pension plan assets as of December 31, 2022 and 2021, and indicates the fair value hierarchy of the valuation techniques utilized to determine such fair value. See Note 13 for a description of the fair value hierarchy.
| December 31, 2022 |  | December 31, 2021
Plan assets subject to fair value hierarchy | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Registered investment companies | $ | 10.6 |  |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 10.6 |  |  | $ | 14.1 |  |  | $ | 0.0 |  |  | $ | 0.0 |  |  | $ | 14.1 |
Limited partnerships | 0.0 |  |  | 0.0 |  |  | 0.0 |  |  | 0.0 |  |  | 0.0 |  |  | 0.0 |  |  | 24.0 |  |  | 24.0 |
Fixed income securities | 12.5 |  |  | 0.0 |  |  | 0.0 |  |  | 12.5 |  |  | 29.0 |  |  | 0.0 |  |  | 0.0 |  |  | 29.0 |
Insurance contracts | 0.0 |  |  | 1.6 |  |  | 0.0 |  |  | 1.6 |  |  | 0.0 |  |  | 2.0 |  |  | 0.0 |  |  | 2.0 |
Other | 11.9 |  |  | 0.0 |  |  | 0.0 |  |  | 11.9 |  |  | 30.7 |  |  | 0.0 |  |  | 0.0 |  |  | 30.7 |
Total plan assets, subject to leveling | $ | 35.0 |  |  | $ | 1.6 |  |  | $ | 0.0 |  |  | $ | 36.6 |  |  | $ | 73.8 |  |  | $ | 2.0 |  |  | $ | 24.0 |  |  | $ | 99.8 |
Plan assets measured at net asset value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other investments measured at net asset value 1 |  |  |  |  |  |  | 331.0 |  |  |  |  |  |  |  |  | 483.1 |
Total plan assets |  |  |  |  |  |  | $ | 367.6 |  |  |  |  |  |  |  |  | $ | 582.9 |
1 Certain investments that are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy but are included to reconcile to the amounts presented in the fair value of plan assets table above.

X
- Definition Fair Value of Pension Plan Assets [Table Text Block] + References No definition available. + Details
Name: | ipg_FairValueOfPensionPlanAssetsTableTextBlock
Namespace Prefix: | ipg_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration