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Fair Value Measurements Fair Value Measurement Recurring Basis (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |
Derivative Asset, Foreign Currency |  | $ 71 | $ 55
Derivative Liability, Foreign Currency |  | 26 | 135
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |
Marketable securities |  | 86 | 43
Total assets at fair value |  | 154 | 98
Total Liabilities at fair value |  | 24 | 135
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Contract [Member] |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |
Derivative Asset, Foreign Currency | [1] | 68 | 55
Derivative Liability, Foreign Currency | [1] | 24 | 135
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |
Equity Securities | [2] | 48 |
Total assets at fair value |  | 48 | 226
Total Liabilities at fair value |  | $ 0 | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities |  |  |
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items] |  |  |
Available-for-sale securities | [3] |  | $ 226
[1] | See Note 22 - Financial Instruments, to the Consolidated Financial Statements, for the classification of derivatives in the Consolidated Balance Sheets.
[2] | The company's equity securities are included in "other assets" in the Consolidated Balance Sheets.
[3] | The company's investments in U.S. treasuries, which are primarily available-for-sale, are included in "marketable securities" in the Consolidated Balance Sheets.

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