CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016		Sep. 27, 2015
Statement of Comprehensive Income [Abstract]
Net income before allocation to noncontrolling interests	[1],[2]	$ 1,319	$ 2,139	$ 6,380	[3]	$ 7,155	[3]
Foreign currency translation adjustments, net	[1]	418	(535)	999		(2,170)
Other comprehensive income (loss), foreign currency transaction and translation adjustment, before tax	[1]	418	(535)	999		(2,170)
Unrealized holding losses on derivative financial instruments, net	[1]	(126)	(217)	(970)		(80)
Reclassification adjustments for realized (gains)/losses	[1],[4]	150	(35)	280		(545)
Other comprehensive income (loss), derivatives qualifying as hedges, before tax, total	[1]	24	(251)	(690)		(625)
Unrealized holding gains/(losses) on available-for-sale securities, net	[1]	261	25	740		(502)
Reclassification adjustments for realized (gains)/losses	[1],[4]	(112)	69	(129)		815
Other comprehensive income (loss), available-for-sale securities adjustment, before tax, total	[1]	149	94	611		312
Benefit plans: actuarial losses, net	[1]	(82)	(144)	(101)		(122)
Reclassification adjustments related to amortization	[1],[5]	140	140	418		409
Reclassification adjustments related to settlements, net	[1],[5]	28	36	76		98
Other	[1]	69	(10)	51		120
Defined benefit plan, amounts recognized in other comprehensive income (loss), net gain (loss), before tax, total	[1]	155	23	444		506
Benefit plans: prior service credits and other, net	[1]	95	0	182		506
Reclassification adjustments related to amortization	[1],[5]	(45)	(46)	(127)		(115)
Reclassification adjustments related to curtailments, net	[1],[5]	(8)	(4)	(14)		(21)
Other	[1]	6	(1)	12		(3)
Defined benefit plan, amounts recognized in other comprehensive income (loss), net prior service cost, before tax	[1]	48	(51)	54		366
Other comprehensive income/(loss), before tax	[1]	794	(721)	1,418		(1,611)
Tax provision/(benefit) on other comprehensive income (loss)	[1],[6]	116	(65)	111		267
Other comprehensive income/(loss) before allocation to noncontrolling interests	[1]	678	(656)	1,307		(1,878)
Comprehensive income before allocation to noncontrolling interests	[1]	1,997	1,483	7,687		5,277
Less: Comprehensive income/(loss) attributable to noncontrolling interests	[1]	0	2	24		(1)
Comprehensive income attributable to Pfizer Inc.	[1]	$ 1,997	$ 1,481	$ 7,664		$ 5,278

[1] Amounts may not add due to rounding.

[2] Amounts may not add due to rounding.

[3] Amounts may not add due to rounding.

[4] Reclassified into Other (income)/deductions—net in the condensed consolidated statements of income.

[5] Generally reclassified, as part of net periodic pension cost, into Cost of sales, Selling, informational and administrative expenses, and/or Research and development expenses, as appropriate, in the condensed consolidated statements of income. For additional information, see Note 10. Pension and Postretirement Benefit Plans.

[6] See Note 5C. Tax Matters: Tax Provision/(Benefit) on Other Comprehensive Income/(Loss).