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Fair Value Measurements (Fair Value Hierarchy Classification) (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Portion at Other than Fair Value Measurement [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term receivables | $ 364 | $ 344
Customer financing notes receivable | 309 | 283
Short-term borrowings | 1,725 | 2,364
Long-term debt (excluding finance leases) | 44,510 | 41,199
Long-term liabilities | 339 | 336
Short-term borrowings | 1,725 | 2,364
Fair Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term receivables | 360 | 347
Customer financing notes receivable | 283 | 283
Short-term borrowings | 1,725 | 2,364
Long-term debt (excluding finance leases) | 47,738 | 46,202
Long-term liabilities | 328 | 322
Fair Value Level 1 [Member] | Fair Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term receivables | 0 | 0
Customer financing notes receivable | 0 | 0
Short-term borrowings | 0 | 0
Long-term debt (excluding finance leases) | 0 | 0
Long-term liabilities | 0 | 0
Fair Value Level 2 [Member] | Fair Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term receivables | 360 | 347
Customer financing notes receivable | 283 | 283
Short-term borrowings | 500 | 0
Long-term debt (excluding finance leases) | 44,642 | 45,802
Long-term liabilities | 328 | 322
Fair Value Level 3 [Member] | Fair Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Long-term receivables | 0 | 0
Customer financing notes receivable | 0 | 0
Short-term borrowings | 1,225 | 2,364
Long-term debt (excluding finance leases) | 3,096 | 400
Long-term liabilities | 0 | 0
Fair Value, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale securities | 52 | 57
Derivative assets | 137 | 56
Derivative liabilities | (594) | (287)
Fair Value, Recurring [Member] | Fair Value Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale securities | 52 | 57
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Recurring [Member] | Fair Value Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale securities | 0 | 0
Derivative assets | 137 | 56
Derivative liabilities | (594) | (287)
Fair Value, Recurring [Member] | Fair Value Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available-for-sale securities | 0 | 0
Derivative assets | 0 | 0
Derivative liabilities | $ 0 | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 + Details
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