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Significant Accounting Policies Narrative (Detail) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Feb. 28, 2011
King [Member]
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Jan. 31, 2011
King [Member]
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Dec. 31, 2011
King US [Member]
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Dec. 31, 2011
King International [Member]
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Oct. 15, 2009
Wyeth [Member]
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Dec. 31, 2009
Wyeth US [Member]
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Dec. 31, 2009
Wyeth International [Member]
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| Significant Accounting Policies [Line Items] | ||||||||||
| Acquisition purchase price paid | $ 3,300,000,000 | |||||||||
| Percent of outstanding shares initially acquired | 92.50% | |||||||||
| Acquisition price for remaining outstanding shares | 300,000,000 | |||||||||
| Time period of operations included in parent's financial statements | 11 months | 10 months | Two-and-a-half months | One-and-a-half months | ||||||
| Acquisition of Wyeth in a cash-and-stock transaction, value | 68,236,000,000 | |||||||||
| Accruals for Medicaid rebates, Medicare rebates, performance-based contract rebates and chargebacks | 3,300,000,000 | 3,000,000,000 | ||||||||
| Advertising expenses | $ 3,900,000,000 | $ 4,000,000,000 | $ 2,900,000,000 | |||||||
| Measurement in percentage of benefit likely of being realized upon settlement | 50.00% | |||||||||