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Financial Instruments, Hedging Activities and Fair Value Measurements (Cash Flow and Net Investment Hedges) (Details) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Fair Value Hedging | Interest rate swaps | Interest expense |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Recognized Amount | $ 5 | $ 1
Cash Flow Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 0 | (3)
Gain (Loss) Recognized Amount | 31 | 29
Cash Flow Hedging | Foreign currency forward contracts | Other charges and Cost of sales |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 0 | (3)
Gain (Loss) Recognized Amount | 0 | (4)
Net Investment Hedging |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 21 | 28
Gain (Loss) Recognized Amount | 9 | 8
Net Investment Hedging | Cross currency swaps |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | (4) | 6
Gain (Loss) Recognized Amount | 9 | 8
Net Investment Hedging | Foreign denominated debt |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Deferred in OCI | 25 | 22
Not Designated as Hedging Instrument | Foreign currency forward contracts | Other charges and Cost of sales |  |
Derivatives, Fair Value [Line Items] |  |
Gain (Loss) Recognized Amount | $ 26 | $ 32

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