Earnings Per Share Attributable to Common Shareholders - Diluted Numerator (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Apr. 01, 2012
EPS Numerator-Diluted
Income from continuing operations attributable to Pfizer Inc. common shareholders and assumed conversions	$ 2,738	$ 1,715
Discontinued operations-net of tax	4	79
Net income attributable to Pfizer Inc. common shareholders and assumed conversions	$ 2,742	$ 1,794

Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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