Document and Entity Information - shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2017 |
Apr. 14, 2017 |
|
| Document and Entity Information | ||
| Amendment Flag | false | |
| Entity Registrant Name | INTERPUBLIC GROUP OF COMPANIES, INC. | |
| Entity Central Index Key | 0000051644 | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Filer Category | Large Accelerated Filer | |
| Document Type | 10-Q | |
| Document Period End Date | Mar. 31, 2017 | |
| Document Fiscal Year Focus | 2017 | |
| Document Fiscal Period Focus | Q1 | |
| Entity Common Stock, Shares Outstanding | 395,110,131 |