Segment, Geographic and Other Revenue Information - Revenues By Products (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012
Revenue from External Customer [Line Items]
Gains (Losses) on Sales of Assets	$ 490		$ 0
Revenues	13,500		14,885
Biopharmaceutical [Member]
Revenue from External Customer [Line Items]
Revenues	11,546		13,065
Biopharmaceutical [Member] | Lyrica [Member]
Revenue from External Customer [Line Items]
Revenues	1,066		955
Biopharmaceutical [Member] | Enbrel (Outside the U.S. and Canada) [Member]
Revenue from External Customer [Line Items]
Revenues	877		899
Biopharmaceutical [Member] | Prevnar 13/ Prevenar 13 [Member]
Revenue from External Customer [Line Items]
Revenues	846		945
Biopharmaceutical [Member] | Celebrex [Member]
Revenue from External Customer [Line Items]
Revenues	653		634
Biopharmaceutical [Member] | Lipitor [Member]
Revenue from External Customer [Line Items]
Revenues	626	[1]	1,395	[1]
Biopharmaceutical [Member] | Viagra [Member]
Revenue from External Customer [Line Items]
Revenues	461		496
Biopharmaceutical [Member] | Zyvox [Member]
Revenue from External Customer [Line Items]
Revenues	342		325
Biopharmaceutical [Member] | Sutent [Member]
Revenue from External Customer [Line Items]
Revenues	302		300
Biopharmaceutical [Member] | Norvasc [Member]
Revenue from External Customer [Line Items]
Revenues	301		334
Biopharmaceutical [Member] | Premarin family [Member]
Revenue from External Customer [Line Items]
Revenues	244		261
Biopharmaceutical [Member] | Genotropin [Member]
Revenue from External Customer [Line Items]
Revenues	189		195
Biopharmaceutical [Member] | BeneFIX [Member]
Revenue from External Customer [Line Items]
Revenues	189		183
Biopharmaceutical [Member] | Vfend [Member]
Revenue from External Customer [Line Items]
Revenues	187		178
Biopharmaceutical [Member] | Chantix / Champix [Member]
Revenue from External Customer [Line Items]
Revenues	166		178
Biopharmaceutical [Member] | Pristiq [Member]
Revenue from External Customer [Line Items]
Revenues	166		151
Biopharmaceutical [Member] | Detrol / Detrol LA [Member]
Revenue from External Customer [Line Items]
Revenues	151		195
Biopharmaceutical [Member] | Xalatan Xalacom [Member]
Revenue from External Customer [Line Items]
Revenues	147		227
Biopharmaceutical [Member] | ReFacto AF/ Xyntha [Member]
Revenue from External Customer [Line Items]
Revenues	139		132
Biopharmaceutical [Member] | Zithromax / Zmax [Member]
Revenue from External Customer [Line Items]
Revenues	116		123
Biopharmaceutical [Member] | Zoloft [Member]
Revenue from External Customer [Line Items]
Revenues	116		130
Biopharmaceutical [Member] | Medrol [Member]
Revenue from External Customer [Line Items]
Revenues	113		134
Biopharmaceutical [Member] | Effexor [Member]
Revenue from External Customer [Line Items]
Revenues	105		129
Biopharmaceutical [Member] | Zosyn / Tazocin [Member]
Revenue from External Customer [Line Items]
Revenues	87		128
Biopharmaceutical [Member] | Tygacil [Member]
Revenue from External Customer [Line Items]
Revenues	87		81
Biopharmaceutical [Member] | Relpax [Member]
Revenue from External Customer [Line Items]
Revenues	86		85
Biopharmaceutical [Member] | Fragmin [Member]
Revenue from External Customer [Line Items]
Revenues	86		91
Biopharmaceutical [Member] | Rapamune [Member]
Revenue from External Customer [Line Items]
Revenues	84		82
Biopharmaceutical [Member] | Prevnar / Prevenar (7-valent) [Member]
Revenue from External Customer [Line Items]
Revenues	81		138
Biopharmaceutical [Member] | Cardura [Member]
Revenue from External Customer [Line Items]
Revenues	76		84
Biopharmaceutical [Member] | EpiPen [Member]
Revenue from External Customer [Line Items]
Revenues	72		58
Biopharmaceutical [Member] | Revatio [Member]
Revenue from External Customer [Line Items]
Revenues	72		136
Biopharmaceutical [Member] | Sulperazon [Member]
Revenue from External Customer [Line Items]
Revenues	71		58
Biopharmaceutical [Member] | Xanax XR [Member]
Revenue from External Customer [Line Items]
Revenues	70		68
Biopharmaceutical [Member] | Inlyta [Member]
Revenue from External Customer [Line Items]
Revenues	63		7
Biopharmaceutical [Member] | Aricept [Member]
Revenue from External Customer [Line Items]
Revenues	62	[2]	94	[2]
Biopharmaceutical [Member] | Unasyn [Member]
Revenue from External Customer [Line Items]
Revenues	56		54
Biopharmaceutical [Member] | Caduet [Member]
Revenue from External Customer [Line Items]
Revenues	56		65
Biopharmaceutical [Member] | Xalkori [Member]
Revenue from External Customer [Line Items]
Revenues	53		17
Biopharmaceutical [Member] | Neurontin [Member]
Revenue from External Customer [Line Items]
Revenues	52		58
Biopharmaceutical [Member] | Inspra [Member]
Revenue from External Customer [Line Items]
Revenues	52		49
Biopharmaceutical [Member] | Toviaz [Member]
Revenue from External Customer [Line Items]
Revenues	52		46
Biopharmaceutical [Member] | Aromasin [Member]
Revenue from External Customer [Line Items]
Revenues	51		56
Biopharmaceutical [Member] | Dalacin / Cleocin [Member]
Revenue from External Customer [Line Items]
Revenues	50		49
Biopharmaceutical [Member] | Alliance revenues [Member]
Revenue from External Customer [Line Items]
Revenues	747	[3]	836	[3]
Biopharmaceutical [Member] | All Other Biopharmaceutical Products [Member]
Revenue from External Customer [Line Items]
Revenues	1,878	[4]	2,226	[4]
Other products [Member] | Zoetis [Member]
Revenue from External Customer [Line Items]
Revenues	1,090		1,040
Other products [Member] | Consumer Healthcare [Member]
Revenue from External Customer [Line Items]
Revenues	811		727
Other products [Member] | Pfizer Centre Source And Other [Member]
Revenue from External Customer [Line Items]
Revenues	$ 53	[5]	$ 53	[5]

[1] Lipitor lost exclusivity in the U.S. in November 2011 and various other major markets in 2011 and 2012. This loss of exclusivity reduced branded worldwide revenues by $792 million in the first quarter of 2013, in comparison with the first quarter of 2012.

[2] Represents direct sales under license agreement with Eisai Co., Ltd.

[3] Includes Enbrel (in the U.S. and Canada), Spiriva, Rebif, Aricept and Eliquis.

[4] Includes sales of generic atorvastatin.

[5] Represents revenues generated from Pfizer CentreSource, our contract manufacturing and bulk pharmaceutical chemical sales organization.