v3.19.3.a.u2

Debt (Debt) (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | $ 11,706 | $ 10,785
Debt, current portion | 1,268 | 637
Debt, net of current portion | 10,438 | 10,148
Unsecured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 3,663 | 3,036
Loans Payable [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 3,167 | 2,976
Corporate Debt Securities [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 2,835 | 2,400
Notes Payable, Other Payables [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 879 | 1,264
Secured Debt [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 967 | 974
Finance Lease Obligations [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | 73 | 105
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt and Lease Obligation | $ 122 | $ 30

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