Borrowings - Pre-Swap Obligations (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Pre-swap annual contractual obligations of long-term debt outstanding
2018 (for Q3 - Q4)	$ 1,869
2019	7,048
2020	6,241
2021	6,460
2022	4,319
2023 and beyond	17,997
Total	$ 43,934	$ 45,445

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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