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Financial Instruments, Hedging Activities and Fair Value Measurements (Cash Flow and Net Investment Hedges) (Details) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Fair Value Hedging | Interest rate swaps | Interest expense |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Recognized Amount | $ 8 | $ 2
Cash Flow Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 0 | (4)
Gain (Loss) Recognized Amount | 35 | 50
Cash Flow Hedging | Foreign currency forward contracts | Other charges and Cost of sales |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 0 | (4)
Gain (Loss) Recognized Amount | 0 | 4
Net Investment Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 115 | 164
Gain (Loss) Recognized Amount | 13 | 12
Net Investment Hedging | Cross currency swaps |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 14 | 34
Gain (Loss) Recognized Amount | 13 | 12
Net Investment Hedging | Foreign denominated debt |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 101 | 130
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other charges and Cost of sales |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Recognized Amount | $ 27 | $ 44

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