Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income (loss)	$ 10	$ 20	$ (148)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	87	97	111
Stock-based compensation expense (Note 13)	96	88	120
Deferred income tax expense (benefit) (Note 10)	(25)	(19)	(44)
Provision for expected credit losses (Note 2)	6	6	3
Other, net	9	7	19
Changes in operating assets and liabilities, net:
Accounts receivable, prepaid expenses and other assets	6	(87)	(73)
Accounts payable, accrued expenses and other liabilities	11	72	30
Deferred merchant payables	32	99	81
Income tax receivables/payables, net	(1)	107	1
Deferred revenue	4	10	8
Net cash provided by (used in) operating activities	235	400	108
Investing activities:
Capital expenditures, including capitalized website development	(63)	(56)	(54)
Other investing activities, net	0	4	0
Net cash provided by (used in) investing activities	(63)	(52)	(54)
Financing activities:
Repurchase of common stock (Note 14)	(100)	0	0
Purchase of capped calls in connection with 2026 Senior Notes (Note 8)	0	0	(35)
Proceeds from exercise of stock options (Note 13)	0	0	8
Payment of withholding taxes on net share settlements of equity awards	(17)	(20)	(44)
Payments of finance lease obligation and other financing activities, net (Note 5)	(7)	(7)	(6)
Net cash provided by (used in) financing activities	(127)	(27)	263
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1	(23)	(12)
Net increase (decrease) in cash, cash equivalents and restricted cash	46	298	305
Cash, cash equivalents and restricted cash at beginning of period	1,021	723	418
Cash, cash equivalents and restricted cash at end of period	1,067	1,021	723
Supplemental disclosure of cash flow information:
Cash paid (received) during the period for income taxes, net of refunds	140	(40)	5
Cash paid during the period for interest	39	40	43
Supplemental disclosure of non-cash investing and financing activities:
Stock-based compensation capitalized website development costs (Note 13)	10	10	13
2026 Senior Notes
Financing activities:
Proceeds from issuance of 2026 Senior Notes, net of financing costs (Note 8)	0	0	340
Credit Facility
Financing activities:
Payment of financing costs related to Credit Facility (Note 8)	$ (3)	$ 0	$ 0