Financial Instruments (Senior Notes Offering) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Jan. 28, 2013
Debt Instrument [Line Items]
Debt, principal amount	$ 3,652
Senior Notes
Debt Instrument [Line Items]
Debt, principal amount		3,650
Debt, unamortized discount		10
Debt, purchase price percent due to downgrade of investment grade		101.00%
Senior Notes | Initial Purchasers
Debt Instrument [Line Items]
Debt, principal amount		2,650
Senior Notes | Pfizer Transfer
Debt Instrument [Line Items]
Debt, principal amount		1,000
Senior Notes | Senior Notes 1.150% due 2016
Debt Instrument [Line Items]
Debt, principal amount	400	400
Debt, stated interest rate		1.15%
Senior Notes | Senior Notes 1.875% due 2018
Debt Instrument [Line Items]
Debt, principal amount	750	750
Debt, stated interest rate		1.875%
Senior Notes | Senior Notes 3.250% due 2023
Debt Instrument [Line Items]
Debt, principal amount	1,350	1,350
Debt, stated interest rate		3.25%
Senior Notes | Senior Notes 4.700% due 2043
Debt Instrument [Line Items]
Debt, principal amount	$ 1,150	$ 1,150
Debt, stated interest rate		4.70%