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Financial Instruments (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Carrying Amount [Member]
Carrying and estimated fair value
Long-term debt (including current maturities)	$ 1,230	$ 1,162
Carrying Amount [Member] \| Foreign Exchange Forward [Member]
Instruments with off-balance sheet risk:
Fair Value of Derivative Instruments	0	2
Fair Value [Member]
Carrying and estimated fair value
Long-term debt (including current maturities)	1,265	1,201
Fair Value [Member] \| Foreign Exchange Forward [Member]
Instruments with off-balance sheet risk:
Fair Value of Derivative Instruments	$ 0	$ 2

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.

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