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Fair Value Measurements Fair Value Measurements (Details Textuals) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Fair Value Measurements Textuals Abstract
Long-term debt and current portion of long term debt, carrying value	$ 3,687	$ 3,386
Long-term debt and current portion of long-term debt, fair value	$ 4,273	$ 3,787

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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