Segment, Geographic and Other Revenue Information - Revenues By Products (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2015		Mar. 30, 2014
Revenue from External Customer [Line Items]
Revenues	$ 10,864	[1]	$ 11,353	[1]
Biopharmaceutical [Member]
Revenue from External Customer [Line Items]
Revenues	9,945		10,479
Other products [Member]
Revenue from External Customer [Line Items]
Revenues	111	[2]	113	[2]
Global Innovative and Established Pharmaceutical [Member] | Lyrica [Member]
Revenue from External Customer [Line Items]
Revenues	1,187	[3]	1,150	[3]
Global Innovative and Established Pharmaceutical [Member] | Viagra [Member]
Revenue from External Customer [Line Items]
Revenues	396	[4]	374	[4]
Global Innovative and Established Pharmaceutical [Member] | Alliance revenues [Member]
Revenue from External Customer [Line Items]
Revenues	222	[5]	213	[5]
Global Innovative Pharmaceutical [Member]
Revenue from External Customer [Line Items]
Revenues	3,075		3,076
Global Innovative Pharmaceutical [Member] | Enbrel (Outside the U.S. and Canada) [Member]
Revenue from External Customer [Line Items]
Revenues	759		914
Global Innovative Pharmaceutical [Member] | BeneFIX [Member]
Revenue from External Customer [Line Items]
Revenues	173		201
Global Innovative Pharmaceutical [Member] | Chantix / Champix [Member]
Revenue from External Customer [Line Items]
Revenues	158		147
Global Innovative Pharmaceutical [Member] | Genotropin [Member]
Revenue from External Customer [Line Items]
Revenues	138		166
Global Innovative Pharmaceutical [Member] | ReFacto AF/ Xyntha [Member]
Revenue from External Customer [Line Items]
Revenues	120		145
Global Innovative Pharmaceutical [Member] | Xeljanz [Member]
Revenue from External Customer [Line Items]
Revenues	96		52
Global Innovative Pharmaceutical [Member] | Toviaz [Member]
Revenue from External Customer [Line Items]
Revenues	63		63
Global Innovative Pharmaceutical [Member] | Rapamune [Member]
Revenue from External Customer [Line Items]
Revenues	53		88
Global Innovative Pharmaceutical [Member] | All Other Biopharmaceutical Products [Member]
Revenue from External Customer [Line Items]
Revenues	179		196
Global Established Pharmaceutical [Member]
Revenue from External Customer [Line Items]
Revenues	5,014		5,990
Global Established Pharmaceutical [Member] | Lipitor [Member]
Revenue from External Customer [Line Items]
Revenues	441		457
Global Established Pharmaceutical [Member] | Zyvox [Member]
Revenue from External Customer [Line Items]
Revenues	271		321
Global Established Pharmaceutical [Member] | Norvasc [Member]
Revenue from External Customer [Line Items]
Revenues	252		278
Global Established Pharmaceutical [Member] | Premarin family [Member]
Revenue from External Customer [Line Items]
Revenues	232		248
Global Established Pharmaceutical [Member] | Celebrex [Member]
Revenue from External Customer [Line Items]
Revenues	205		624
Global Established Pharmaceutical [Member] | Vfend [Member]
Revenue from External Customer [Line Items]
Revenues	182		177
Global Established Pharmaceutical [Member] | Pristiq [Member]
Revenue from External Customer [Line Items]
Revenues	161		172
Global Established Pharmaceutical [Member] | Xalatan Xalacom [Member]
Revenue from External Customer [Line Items]
Revenues	102		119
Global Established Pharmaceutical [Member] | Medrol [Member]
Revenue from External Customer [Line Items]
Revenues	101		106
Global Established Pharmaceutical [Member] | Sulperazon [Member]
Revenue from External Customer [Line Items]
Revenues	98		88
Global Established Pharmaceutical [Member] | Zoloft [Member]
Revenue from External Customer [Line Items]
Revenues	86		101
Global Established Pharmaceutical [Member] | Zithromax / Zmax [Member]
Revenue from External Customer [Line Items]
Revenues	86		92
Global Established Pharmaceutical [Member] | Relpax [Member]
Revenue from External Customer [Line Items]
Revenues	80		87
Global Established Pharmaceutical [Member] | Epi Pen [Member]
Revenue from External Customer [Line Items]
Revenues	76		63
Global Established Pharmaceutical [Member] | Fragmin [Member]
Revenue from External Customer [Line Items]
Revenues	74		81
Global Established Pharmaceutical [Member] | Tygacil [Member]
Revenue from External Customer [Line Items]
Revenues	74		74
Global Established Pharmaceutical [Member] | Effexor [Member]
Revenue from External Customer [Line Items]
Revenues	73		82
Global Established Pharmaceutical [Member] | Revatio [Member]
Revenue from External Customer [Line Items]
Revenues	63		76
Global Established Pharmaceutical [Member] | Unasyn [Member]
Revenue from External Customer [Line Items]
Revenues	55		46
Global Established Pharmaceutical [Member] | Neurontin [Member]
Revenue from External Customer [Line Items]
Revenues	55		49
Global Established Pharmaceutical [Member] | Xanax/Xanax XR [Member]
Revenue from External Customer [Line Items]
Revenues	54		59
Global Established Pharmaceutical [Member] | Cardura [Member]
Revenue from External Customer [Line Items]
Revenues	52		66
Global Established Pharmaceutical [Member] | All Other Biopharmaceutical Products [Member]
Revenue from External Customer [Line Items]
Revenues	1,671		1,894
Global Vaccines, Oncology and Consumer Healthcare [Member]
Revenue from External Customer [Line Items]
Revenues	2,664		2,174
Global Vaccines, Oncology and Consumer Healthcare [Member] | Prevnar/ Prevenar family [Member]
Revenue from External Customer [Line Items]
Revenues	1,306	[6]	927	[6]
Global Vaccines, Oncology and Consumer Healthcare [Member] | Sutent [Member]
Revenue from External Customer [Line Items]
Revenues	242		268
Global Vaccines, Oncology and Consumer Healthcare [Member] | Xalkori [Member]
Revenue from External Customer [Line Items]
Revenues	111		88
Global Vaccines, Oncology and Consumer Healthcare [Member] | Inlyta [Member]
Revenue from External Customer [Line Items]
Revenues	95		88
Global Vaccines, Oncology and Consumer Healthcare [Member] | Ibrance [Member]
Revenue from External Customer [Line Items]
Revenues	38		0
Global Vaccines, Oncology and Consumer Healthcare [Member] | All Other Biopharmaceutical Products [Member]
Revenue from External Customer [Line Items]
Revenues	63		41
Global Vaccines, Oncology and Consumer Healthcare [Member] | Consumer Healthcare [Member]
Revenue from External Customer [Line Items]
Revenues	$ 808		$ 761

[1] Amounts may not add due to rounding.

[2] Other includes revenues generated from Pfizer CentreSource, our contract manufacturing and bulk pharmaceutical chemical sales organization, and revenues related to our transitional manufacturing and supply agreements with Zoetis.

[3] Lyrica revenues from all of Europe are included in GEP. All other Lyrica revenues are included in GIP.

[4] Viagra revenues from the U.S. and Canada are included in GIP. All other Viagra revenues are included in GEP.

[5] Includes Eliquis (GIP), Rebif (GIP), Spiriva (GEP) and Aricept (GEP).

[6] In the first quarter of 2015, all revenues were composed of Prevnar 13/Prevenar 13. In the first quarter of 2014, revenues were composed of the Prevnar family of products, which included Prevnar 13/Prevenar 13 and, to a much lesser extent, Prevenar (7-valent).