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		Mar. 31, 2022		Dec. 31, 2021		Mar. 31, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Cash and cash equivalents		$ 1,573		$ 2,585
Restricted cash and cash equivalents		841		1,063
Total cash, cash equivalents, restricted cash and cash equivalents		2,414	[1]	3,648	[1]	$ 1,188	$ 2,508
Short-term Investments		1,412		810
Long-term Investments		121		89
Time Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Short-term Investments		19		16
Sovereign Debt Securities (Central Bank Of Brazil Mandatory Guarantee) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Short-term Investments		941		602
Sovereign Debt Securities (Secured Lines Of Credit Guarantee) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Long-term Investments		16
Sovereign Debt Securities [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Short-term Investments		372		192
Long-term Investments	[2]	52		23
Securitization Transactions [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Long-term Investments	[3]	15		13
Corporate Debt Securities [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Short-term Investments		80
Equity Interest Held At Cost [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Long-term Investments		54		53
Securitization Transactions [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents		410		282
Sovereign Debt Securities (Secured Lines Of Credit Guarantee) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents				296
Bank Account (Argentine Central Bank Regulation) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents		374		449
Bank Account (Chilean Financial Market Commission) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents		40		21
Money Market Funds (Secured Lines Of Credit Guarantee) [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents		16		$ 15
Cash In Bank Account [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents		$ 1

[1] Cash, cash equivalents, restricted cash and cash equivalents as reported in the consolidated statements of cash flow

[2] $16 million held by the Company’s Brazilian subsidiary in guarantee for secured lines of credit. (See Note 11 – Loans payable and other financial liabilities).

[3] Investments from securitization transactions are restricted to the payment of amounts due to third-party investors.