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Financial Instruments and Derivative Contracts - Net Carrying Amount of Held to Maturity Investments (Detail) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Dec. 31, 2008
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| Schedule of Held-to-maturity Securities [Line Items] | ||||||||||
| Short-term investments | $ 581 | [1],[2] | $ 973 | [1],[2] | ||||||
| Cash | 1,169 | 1,284 | ||||||||
| Cash and cash equivalents | 5,780 | [1] | 9,454 | [1] | 542 | 755 | ||||
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Time Deposits [Member] | Remaining maturities from 1 to 90 days [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | ||||||||||
| Short-term Investments, Carrying Amount | 349 | 302 | ||||||||
| Cash & Cash Equivalents, Carrying Amount | 4,318 | 6,154 | ||||||||
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Time Deposits [Member] | Remaining maturities from 91 to 180 days [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | ||||||||||
| Short-term Investments, Carrying Amount | 69 | |||||||||
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Commercial Paper [Member] | Remaining maturities from 1 to 90 days [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | ||||||||||
| Short-term Investments, Carrying Amount | 232 | 525 | ||||||||
| Cash & Cash Equivalents, Carrying Amount | 293 | 1,566 | ||||||||
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Government Obligations [Member] | Remaining maturities from 1 to 90 days [Member]
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| Schedule of Held-to-maturity Securities [Line Items] | ||||||||||
| Short-term Investments, Carrying Amount | 77 | |||||||||
| Cash & Cash Equivalents, Carrying Amount | $ 450 | |||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Unsecured short-term debt instrument issued by corporations which are highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents investments in debt securities which are categorized as held-to-maturity and that have scheduled maturities within one year of the balance sheet date or the normal operating cycle, whichever is longer; such investments are measured at amortized cost (carrying value). The held-to-maturity category is for those securities that the Entity has the positive intent and ability to hold until maturity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Other (not elsewhere specified in the taxonomy) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Any certificate of deposit or savings account held by a bank or other financial institution for a short-term specified period of time. Because of their short-term, time deposits are considered highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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