Earnings Per Share Attributable to Common Shareholders - Basic Numerator (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jul. 01, 2012		Jun. 30, 2013		Jul. 01, 2012
EPS Numerator-Basic
Income from continuing operations	$ 3,575		$ 3,000		$ 6,191		$ 4,554
Less: Net income attributable to noncontrolling interests	10		7		19		16
Income from continuing operations attributable to Pfizer Inc.	3,565		2,993		6,172		4,538
Less: Preferred stock dividends-net of tax	0		0		1		1
Income from continuing operations attributable to Pfizer Inc. common shareholders	3,565		2,993		6,171		4,537
Discontinued operations-net of tax	10,559		260		10,708		509
Less: Discontinued operations––net of tax, attributable to noncontrolling interests	25		0		39		0
Discontinued operations––net of tax, attributable to Pfizer Inc. common shareholders	10,534		260		10,669		509
Net income attributable to Pfizer Inc. common shareholders	$ 14,099		$ 3,253		$ 16,840		$ 5,046
EPS Denominator
Weighted-average number of common shares outstanding-Basic	7,042		7,476		7,115		7,506
Common-share equivalents: stock options, stock issuable under employee compensation plans and convertible preferred stock	75		61		70		64
Weighted-average number of common shares outstanding-Diluted	7,117		7,537		7,185		7,570
Stock options that had exercise prices greater than the average market price of our common stock issuable under employee compensation plans	44	[1]	216	[1]	44	[1]	216	[1]

[1] These common stock equivalents were outstanding for the six months ended June 30, 2013 and July 1, 2012, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.