REVENUES - Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 5,859	$ 5,462	$ 10,274	$ 9,240
Online accommodation reservation services | Revenue Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk percentage	89.00%	89.00%	89.00%	89.00%
U.S.
Disaggregation of Revenue [Line Items]
Revenues	$ 638	$ 615	$ 1,195	$ 1,138
The Netherlands
Disaggregation of Revenue [Line Items]
Revenues	4,463	4,340	7,802	7,199
Other
Disaggregation of Revenue [Line Items]
Revenues	$ 758	$ 507	$ 1,277	$ 903