Fair Value Measurements Fair Value Measurements (Details Textuals) - USD ($) $ in Millions |
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Fair Value Disclosures [Abstract] | ||
| Long-term debt and current portion of long term debt, carrying value | $ 8,023 | $ 9,032 |
| Long-term debt and current portion of long-term debt, fair value | $ 8,231 | $ 9,509 |
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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