CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Apr. 03, 2016	Mar. 29, 2015
Income Statement [Abstract]
Revenues	[1],[2]	$ 13,005	$ 10,864
Costs and expenses:
Cost of sales	[1],[3]	2,851	1,838
Selling, informational and administrative expenses	[1],[3]	3,385	3,104
Research and development expenses	[1],[3]	1,731	1,885
Amortization of intangible assets	[1]	1,006	940
Restructuring charges and certain acquisition-related costs	[1]	141	60
Other (income)/deductions––net	[1]	330	(46)
Income from continuing operations before provision for taxes on income	[1],[4]	3,561	3,082
Provision for taxes on income	[1]	535	706
Income from continuing operations	[1]	3,026	2,376
Discontinued operations––net of tax	[1]	0	5
Net income before allocation to noncontrolling interests	[1],[5],[6]	3,026	2,381
Less: Net income attributable to noncontrolling interests	[1]	9	6
Net income attributable to Pfizer Inc.	[1]	$ 3,016	$ 2,376
Earnings per common share––basic:
Income from continuing operations attributable to Pfizer Inc. common shareholders (in dollars per share)	[1]	$ 0.49	$ 0.38
Discontinued operations––net of tax (in dollars per share)	[1]	0.00	0.00
Net income attributable to Pfizer Inc. common shareholders (in dollars per share)	[1]	0.49	0.38
Earnings per common share––diluted:
Income from continuing operations attributable to Pfizer Inc. common shareholders (in dollars per share)	[1]	0.49	0.38
Discontinued operations––net of tax (in dollars per share)	[1]	0.00	0.00
Net income attributable to Pfizer Inc. common shareholders (in dollars per share)	[1]	$ 0.49	$ 0.38
Weighted-average shares––basic	[1]	6,150	6,203
Weighted-average shares––diluted	[1]	6,214	6,292
Cash dividends paid per common share (in dollars per share)	[1]	$ 0.3	$ 0.28

[1] Amounts may not add due to rounding.

[2] On September 3, 2015, we acquired Hospira. Commencing from the acquisition date, our condensed consolidated statement of income includes the operating results of Hospira. As a result, legacy Hospira operations are included in our condensed consolidated statements of income for the first quarter of 2016, but not for the first quarter of 2015. See Note 2A for additional information.

[3] Excludes amortization of intangible assets, except as disclosed in Note 9A. Identifiable Intangible Assets and Goodwill:Identifiable Intangible Assets.

[4] Income from continuing operations before provision for taxes on income.

[5] Amounts may not add due to rounding.

[6] Amounts may not add due to rounding.