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Taxes on Income - Provision for Taxes on Income (Parenthetical) (Detail) (USD $)
In Billions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|
| Income Taxes [Line Items] | ||
| Deferred income taxes on certain current-year funds earned outside of the U.S. | $ 2.1 | $ 2.5 |