Earnings Per Share Attributable to Common Shareholders - Diluted Numerator (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 01, 2012		Jul. 03, 2011		Jul. 01, 2012		Jul. 03, 2011
EPS Numerator-Diluted
Income from continuing operations attributable to Pfizer Inc. common shareholders and assumed conversions	$ 3,187		$ 2,513		$ 4,902		$ 4,637
Discontinued operations-net of tax	66	[1]	97	[1]	145	[1]	195	[1]
Net income attributable to Pfizer Inc. common shareholders and assumed conversions	$ 3,253		$ 2,610		$ 5,047		$ 4,832

[1] Includes the Nutrition business for all periods presented and the Capsugel business for 2011 only.