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Cash, Cash Equivalents, Restricted Cash And Cash Equivalents And Investments (Components Of Cash, Cash Equivalents, Restricted Cash And Cash Equivalents And Investments) (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 1,455 |  | $ 2,585 |  |  |
Restricted cash and cash equivalents |  | 1,073 |  | 1,063 |  |  |
Total cash, cash equivalents, restricted cash and cash equivalents |  | 2,528 | [1] | 3,648 | [1] | $ 1,423 | $ 2,508
Short-term Investments |  | 1,943 |  | 810 |  |  |
Long-term Investments |  | 375 |  | 89 |  |  |
Time Deposits [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Short-term Investments |  | 438 |  | 16 |  |  |
Foreign Government Debt [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Short-term Investments |  | 25 |  | 42 |  |  |
Long-term Investments |  | 48 |  | 23 |  |  |
U.S Government Debt Securitites [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Short-term Investments |  | 452 |  | 150 |  |  |
Long-term Investments |  | 256 |  |  |  |  |
Foreign Government Debt Securities (Central Bank Of Brazil Mandatory Guarantee) [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Short-term Investments |  | 1,013 |  | 602 |  |  |
Securitization Transactions [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Long-term Investments | [2] | 15 |  | 13 |  |  |
Corporate Debt Securities [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Short-term Investments |  | 15 |  |  |  |  |
Equity Interest Held At Cost [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Long-term Investments |  | 56 |  | 53 |  |  |
Cash In Bank Account [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  | 834 |  | 1,103 |  |  |
Cash In Bank Account [Member] | Argentina [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | 384 |  | 449 |  |  |
Cash In Bank Account [Member] | Mexico [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | 78 |  |  |  |  |
Cash In Bank Account [Member] | Chile [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | 9 |  | 21 |  |  |
Time Deposits [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  | 129 |  | 387 |  |  |
Time Deposits [Member] | Mexico [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | 95 |  |  |  |  |
Time Deposits [Member] | Chile [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | 35 |  |  |  |  |
Money Market [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  | 492 |  | 1,079 |  |  |
Restricted cash and cash equivalents |  | 51 |  | 15 |  |  |
Foreign Government Debt [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 16 |  |  |
Securitization Transactions [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  | $ 421 |  | 282 |  |  |
Sovereign Debt Securities (Secured Lines Of Credit Guarantee) [Member] |  |  |  |  |  |  |
Restricted Cash and Cash Equivalents Items [Line Items] |  |  |  |  |  |  |
Restricted cash and cash equivalents |  |  |  | $ 296 |  |  |
[1] | Cash, cash equivalents, restricted cash and cash equivalents as reported in the consolidated statements of cash flow
[2] | Investments from securitization transactions are restricted to the payment of amounts due to third-party investors.

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