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Fair Value Measurements (Details) - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets: |  |
Investments | $ 20 | $ 11
Foreign Exchange Contracts | 21 | 1
Total Assets at Fair Value | 41 | 12
Liabilities: |  |
Foreign Exchange Contracts | 6 | 34
Total Liabilities at Fair Value | 6 | 34
Supplemental Fair Value Information |  |
Carrying amount — liability | 7,254 | 5,334
Notes Payable and Overdrafts | 459 | 406
Fixed Rate Debt, Excluding Capital Leases |  |
Supplemental Fair Value Information |  |
Carrying amount — liability | 5,632 | 4,094
Fair value — liability | 5,924 | 4,283
Notes Payable and Overdrafts | 282 | 227
Variable Rate Debt, Excluding Capital Leases |  |
Supplemental Fair Value Information |  |
Carrying amount — liability | 1,622 | 1,240
Fair value — liability | 1,617 | 1,197
Notes Payable and Overdrafts | 177 | 179
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  |
Assets: |  |
Investments | 20 | 11
Foreign Exchange Contracts | 0 | 0
Total Assets at Fair Value | 20 | 11
Liabilities: |  |
Foreign Exchange Contracts | 0 | 0
Total Liabilities at Fair Value | 0 | 0
Supplemental Fair Value Information |  |
Fair value — liability | 6,070 | 4,391
Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Investments | 0 | 0
Foreign Exchange Contracts | 21 | 1
Total Assets at Fair Value | 21 | 1
Liabilities: |  |
Foreign Exchange Contracts | 6 | 34
Total Liabilities at Fair Value | 6 | 34
Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Investments | 0 | 0
Foreign Exchange Contracts | 0 | 0
Total Assets at Fair Value | 0 | 0
Liabilities: |  |
Foreign Exchange Contracts | 0 | 0
Total Liabilities at Fair Value | $ 0 | $ 0

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