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Net Income per Share | 9 Months Ended
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Sep. 30, 2020
Net Income per Share [Abstract] |
Net Income per Share | Net Income per Share The computations of basic and diluted net income per share were (in millions, except per share amounts):
| Three Months Ended September 30, |  |  |  | Nine Months Ended September 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Net Income - Omnicom Group Inc. | $ | 313.3 |  |  | $ | 290.2 |  |  | $ | 547.3 |  |  | $ | 924.1 |
Weighted Average Shares: |  |  |  |  |  |  |
Basic | 215.4 |  |  | 218.2 |  |  | 215.6 |  |  | 220.3 |
Dilutive stock options and restricted shares | 0.4 |  |  | 1.2 |  |  | 0.6 |  |  | 1.2 |
Diluted | 215.8 |  |  | 219.4 |  |  | 216.2 |  |  | 221.5 |
Anti-dilutive stock options and restricted shares | 0.8 |  |  | 0.9 |  |  | 0.8 |  |  | 0.9 |
Net Income per Share - Omnicom Group Inc.: |  |  |  |  |  |  |
Basic | $ | 1.45 |  |  | $ | 1.33 |  |  | $ | 2.54 |  |  | $ | 4.19 |
Diluted | $ | 1.45 |  |  | $ | 1.32 |  |  | $ | 2.53 |  |  | $ | 4.17 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
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