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Financial Instruments (Schedule Of Carrying Amounts And Estimated Fair Values Of Financial Instruments Not Recorded At Fair Value) (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2012
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Dec. 31, 2011
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Carrying Amount [Member]
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| Financial Instrument [Line Items] | ||
| Short-term debt (excluding capital leases) | $ 485 | $ 485 |
| Long-term debt (excluding capital leases) | 1,508 | 1,505 |
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Estimated Fair Value [Member]
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| Financial Instrument [Line Items] | ||
| Short-term debt (excluding capital leases) | 492 | 490 |
| Long-term debt (excluding capital leases) | $ 1,719 | $ 1,619 |
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- Details
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| X | ||||||||||
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- Definition
Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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