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Share-Based Payments - Performance Share Awards (PSAs) Narrative (Details) (Performance Shares [Member])
 12 Months Ended
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Minimum [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares earned as a percentage of initial award 0.00%pfe_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedandExpectedtoVestOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Maximum [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares earned as a percentage of initial award 200.00%pfe_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedandExpectedtoVestOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember