XML 29 R11.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Earnings Per Share (Notes) | 12 Months Ended
--- | ---
Dec. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following sets forth basic and diluted earnings per common share available to IPG common stockholders.
| Years ended December 31,
| 2018 |  | 2017 |  | 2016
Net income available to IPG common stockholders | $ | 618.9 |  |  | $ | 554.4 |  |  | $ | 605.0 |
Weighted-average number of common shares outstanding - basic | 383.3 |  |  | 389.6 |  |  | 397.9 |
Dilutive effect of stock options and restricted shares | 5.7 |  |  | 7.7 |  |  | 10.1 |
Weighted-average number of common shares outstanding - diluted | 389.0 |  |  | 397.3 |  |  | 408.0 |
Earnings per share available to IPG common stockholders: |  |  |  |  |
Basic | $ | 1.61 |  |  | $ | 1.42 |  |  | $ | 1.52 |
Diluted | $ | 1.59 |  |  | $ | 1.40 |  |  | $ | 1.48 |

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

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration