Notes Receivable (Details) $ / shares in Units, shares in Millions, adr in Millions	1 Months Ended
	Dec. 31, 2019 USD ($)	Nov. 18, 2019 USD ($) $ / shares	Nov. 30, 2018 USD ($) adr shares
BRW | Term Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan amount			$ 456,000,000
Number of shares pledged as collateral (in shares) | shares			516
Implied value equivalent of shares pledged as collateral (in ADRs) | adr			64.5
Carrying amount of loan receivable	$ 499,000,000
AVH | Convertible Term Loan | United Airlines, Inc. and Kingsland International Group, S.A.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest rate	3.00%
Principal increments required for conversion		$ 5,000,000
Conversion price per one American Depository Share or eight AVH shares (in dollars per share) | $ / shares		$ 4.6217
Conversion price if a change of control occurs (in dollars per share) | $ / shares		$ 4.1595
Percent of outstanding principal amount required to be exercised if criteria is met		100.00%
AVH | Convertible Term Loan | United Airlines, Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Issuance of notes receivable	$ 150,000,000