Earnings/(Loss) Per Common Share Attributable to Pfizer Inc. Common Shareholders - Footnote (Details) shares in Millions	3 Months Ended
Jun. 28, 2026 shares
Earnings Per Share [Abstract]
Weighted-average common-share equivalents excluded from computation of diluted LPS (in shares)	35

Weighted-Average Shares Excluded from Computation of Earnings Per Share, Amount

No definition available.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration