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Shares Used in Computing Net Income Per Share Attributable to Fiserv, Inc. | 3 Months Ended
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Mar. 31, 2020
Earnings Per Share [Abstract] |
Shares Used in Computing Net Income Per Share Attributable to Fiserv, Inc. | Shares Used in Computing Net Income Per Share Attributable to Fiserv, Inc. The computation of shares used in calculating basic and diluted net income per common share is as follows:
| Three Months Ended March 31,
(In millions) | 2020 |  | 2019
Weighted-average common shares outstanding used for the calculation of net income attributable to Fiserv, Inc. per share - basic | 678.1 |  |  | 391.7 |
Common stock equivalents | 13.1 |  |  | 7.4 |
Weighted-average common shares outstanding used for the calculation of net income attributable to Fiserv, Inc. per share - diluted | 691.2 |  |  | 399.1 |
For the three months ended March 31, 2020 and 2019, stock options for 1.0 million and 1.4 million shares, respectively, were excluded from the calculation of weighted-average outstanding shares - diluted because their impact was anti-dilutive.

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- 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
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