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Earnings Per Common Share Attributable to Pfizer Inc. Common Shareholders (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 02, 2022 | Oct. 03, 2021 | Oct. 02, 2022 | Oct. 03, 2021
EPS Numerator––Basic |  |  |  |  |
Income from continuing operations attributable to Pfizer Inc. common shareholders |  | $ 8,630 | $ 8,159 | $ 26,373 | $ 18,834
Discontinued operations––net of tax |  | (21) | (13) | 4 | (248)
Net income attributable to Pfizer Inc. common shareholders |  | 8,608 | 8,146 | 26,378 | 18,586
EPS Numerator––Diluted |  |  |  |  |
Income from continuing operations attributable to Pfizer Inc. common shareholders and assumed conversions |  | 8,630 | 8,159 | 26,373 | 18,834
Discontinued operations––net of tax, attributable to Pfizer Inc. common shareholders and assumed conversions |  | (21) | (13) | 4 | (248)
Net income attributable to Pfizer Inc. common shareholders and assumed conversions |  | $ 8,608 | $ 8,146 | $ 26,378 | $ 18,586
EPS Denominator |  |  |  |  |
Weighted-average number of common shares outstanding––Basic |  | 5,607 | 5,609 | 5,606 | 5,597
Common-share equivalents: stock options and stock issuable under employee compensation plans (in shares) |  | 111 | 116 | 124 | 91
Weighted-average number of common shares outstanding––Diluted |  | 5,718 | 5,725 | 5,729 | 5,688
Anti-dilutive common stock equivalents (in shares) | [1] | 3 | 0 | 1 | 3
[1] | These common stock equivalents were outstanding for the periods presented, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.

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