Borrowings (Details 3) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Borrowings
Long-Term Debt, including current portion	$ 37,265	$ 39,675
Less: current maturities	3,926	4,601
Total long-term debt (excluding current portion)	$ 33,339	$ 35,073

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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.

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