Pay vs Performance Disclosure - USD ($)

12 Months Ended

Dec. 31, 2023

Dec. 31, 2022

Dec. 31, 2021

Dec. 31, 2020

Pay vs Performance Disclosure [Table]

Pay vs Performance [Table Text Block]

Pay Versus Performance 

As required by SEC Regulation S-K Item 402(v), the following table sets forth the compensation information of our Principal Executive Officer (PEO) and our non-PEO NEOs along with total shareholder return, net income, and revenue performance results for our fiscal years ending in 2020, 2021, 2022, and 2023. The calculations and analysis below do not reflect the Company’s approach to aligning executive compensation with performance. For information about how we align executive compensation with financial performance, refer to the Compensation Discussion and Analysis.

Year	Summary Compensation Table Total for PEO(1)	Compensation Actually Paid to PEO(1)(2)(3)(4)	Average Summary Compensation Table Total for Non-PEO Named Executive Officers(5)	Average Compensation Actually Paid to Non-PEO Named Executive Officers(2)(3)(5)(6)	Value of Initial Fixed $100 Investment Based On:		Net Income (in millions)	Revenue (in millions)(9)
					Total Shareholder Return(7)	Peer Group Total Shareholder Return(7)(8)
(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)
2023	$46,720,734	$139,515,292	$15,362,746	$45,820,973	$172.72	$118.93	$4,289	$21,365
2022	$31,519,648	$32,381,096	$9,254,954	$7,503,594	$98.13	$81.50	$3,058	$17,090
2021	$55,077,473	$78,192,575	$14,259,697	$22,828,947	$116.82	$134.41	$1,165	$10,958
2020	$7,148,598	($43,204,620)	$13,708,464	$1,250,364	$108.45	$137.32	$59	$6,796

(1) Mr. Fogel served as Chief Executive Officer (PEO) in each year included in the table.

(2)	Year-end stock prices used as part of the “Compensation Actually Paid” calculation were: 2023 $3,547.22, 2022 $2,015.28, 2021 $2,399.23, and 2020 $2,227.27.
(3)	Fair value or change in fair value, as applicable, of equity awards included in columns (c) and (e) was determined by reference to (1) for RSU awards, closing price on applicable year-end date(s) or, in the case of vesting dates, the actual vesting price, (2) for performance-based PSU awards (excluding PSUs with an rTSR component, TSR governor component, and a stock price appreciation component), the probable number of shares multiplied by the closing price on the applicable year-end date(s) or, in the case of awards that vested, the vested number of shares multiplied by the actual value per share on the vesting date, (3) for PSUs with an rTSR component and, for certain 2023 and 2022 PSUs, the TSR governor component, the probable number of shares multiplied by the share price on the applicable year-end date(s) which was derived using Monte Carlo simulations (because of the rTSR and TSR governor components of this award, as applicable), (4) for PSUs with an additional stock price appreciation component, the probable number of shares multiplied by the closing price on the applicable year-end date(s), plus the fair value of the stock price appreciation component on the applicable year-end date(s) or, in the case of awards that vested, the vested number of shares multiplied by the actual value per share on the vesting date, and (5) for stock options, a Black Scholes value as of the applicable year-end date(s) or vesting date, determined based on the same methodology as used to determine grant date fair value but using the closing stock price and assumptions including expected volatility, risk-free interest rate, expected dividends, and expected term as of the applicable revaluation date(s).
(4)	Compensation Actually Paid to Mr. Fogel in 2023 reflects the following adjustments from column (b):

Adjustments to Calculate Compensation Actually Paid for PEO	2023	2022	2021	2020
Amount Reported in Summary Compensation Table (“SCT”)	$46,720,734	$31,519,648	$55,077,473	$7,148,598
Subtract Amounts Reported under the Stock Awards and Option Awards Column in the SCT	(40,929,691)	(26,258,740)	(48,010,707)	(6,954,041)
Fair Value of Awards Granted during Year that Remain Unvested as of Year End	94,201,594	35,126,298	49,934,780	7,376,718
Fair Value of Awards Granted during Year that Vest during Year	—	—	20,829,900	—
Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted prior to Year that were Outstanding and Unvested as of Year-end	30,945,880	(4,718,980)	379,688	(44,329,590)
Increase/Deduction for Change in Fair Value from prior Year-end to Vesting Date of Awards Granted prior to Year that Vested during Year	8,576,775	(3,287,130)	(18,559)	(6,446,305)
Compensation Actually Paid to PEO	$139,515,292	$32,381,096	$78,192,575	$(43,204,620)

(5) In 2023, 2022, and 2021, the non-PEO NEOs were Messrs. Goulden, Millones, and Pisano. In 2020, the non-PEO NEOs were Messrs. Goulden and Millones.

(6) Average Compensation Actually Paid to the non-PEO NEOs noted in footnote (5) in 2023 reflects the following adjustments from column (d):

Adjustments to Calculate Compensation Actually Paid for non-PEO NEOs	2023	2022	2021	2020
Average Amount Reported in SCT	$15,362,746	$9,254,954	$14,259,697	$13,708,464
Subtract Average Amounts Reported under the Stock Awards and Option Awards Column in the SCT	(12,088,367)	(6,777,593)	(11,312,738)	(12,407,092)
Average Fair Value of Awards Granted during Year that Remain Unvested as of Year end	27,444,862	8,986,958	11,970,027	15,095,779
Average Fair Value of Awards Granted during Year that Vest during Year	—	—	4,463,550	—
Average Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted Prior to Year that were Outstanding and Unvested as of Year-End	9,603,511	(3,160,646)	3,433,026	(14,159,513)
Average Increase/Deduction for Change in Fair Value from Prior Year-end to Vesting Date of Awards Granted Prior to Year that Vested during Year	5,498,221	(800,079)	15,385	(987,274)
Average Compensation Actually Paid to non-PEO NEOs	$45,820,973	$7,503,594	$22,828,947	$1,250,364

(7) The amount listed for each year reflects what the cumulative value of $100 would be if that had been invested on December 31, 2019 (including reinvestment of dividends for applicable peers).

(8) Peer group total shareholder return reflects the RDG Internet Composite as reflected in our Annual Report on Form 10-K.

(9) Revenue is revenue under GAAP as reflected in the Company’s financial statements.

Company Selected Measure Name

Revenue

Named Executive Officers, Footnote [Text Block]

(1) Mr. Fogel served as Chief Executive Officer (PEO) in each year included in the table.

(5) In 2023, 2022, and 2021, the non-PEO NEOs were Messrs. Goulden, Millones, and Pisano. In 2020, the non-PEO NEOs were Messrs. Goulden and Millones.

Peer Group Issuers, Footnote [Text Block]

(8) Peer group total shareholder return reflects the RDG Internet Composite as reflected in our Annual Report on Form 10-K.

PEO Total Compensation Amount

^[1]

$ 46,720,734

$ 31,519,648

$ 55,077,473

$ 7,148,598

PEO Actually Paid Compensation Amount

^{[1],[2],[3],[4]}

$ 139,515,292

32,381,096

78,192,575

(43,204,620)

Adjustment To PEO Compensation, Footnote [Text Block]

Adjustments to Calculate Compensation Actually Paid for PEO	2023	2022	2021	2020
Amount Reported in Summary Compensation Table (“SCT”)	$46,720,734	$31,519,648	$55,077,473	$7,148,598
Subtract Amounts Reported under the Stock Awards and Option Awards Column in the SCT	(40,929,691)	(26,258,740)	(48,010,707)	(6,954,041)
Fair Value of Awards Granted during Year that Remain Unvested as of Year End	94,201,594	35,126,298	49,934,780	7,376,718
Fair Value of Awards Granted during Year that Vest during Year	—	—	20,829,900	—
Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted prior to Year that were Outstanding and Unvested as of Year-end	30,945,880	(4,718,980)	379,688	(44,329,590)
Increase/Deduction for Change in Fair Value from prior Year-end to Vesting Date of Awards Granted prior to Year that Vested during Year	8,576,775	(3,287,130)	(18,559)	(6,446,305)
Compensation Actually Paid to PEO	$139,515,292	$32,381,096	$78,192,575	$(43,204,620)

Non-PEO NEO Average Total Compensation Amount

^[5]

$ 15,362,746

9,254,954

14,259,697

13,708,464

Non-PEO NEO Average Compensation Actually Paid Amount

^{[3],[4],[5],[6]}

$ 45,820,973

7,503,594

22,828,947

1,250,364

Adjustment to Non-PEO NEO Compensation Footnote [Text Block]

Adjustments to Calculate Compensation Actually Paid for non-PEO NEOs	2023	2022	2021	2020
Average Amount Reported in SCT	$15,362,746	$9,254,954	$14,259,697	$13,708,464
Subtract Average Amounts Reported under the Stock Awards and Option Awards Column in the SCT	(12,088,367)	(6,777,593)	(11,312,738)	(12,407,092)
Average Fair Value of Awards Granted during Year that Remain Unvested as of Year end	27,444,862	8,986,958	11,970,027	15,095,779
Average Fair Value of Awards Granted during Year that Vest during Year	—	—	4,463,550	—
Average Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted Prior to Year that were Outstanding and Unvested as of Year-End	9,603,511	(3,160,646)	3,433,026	(14,159,513)
Average Increase/Deduction for Change in Fair Value from Prior Year-end to Vesting Date of Awards Granted Prior to Year that Vested during Year	5,498,221	(800,079)	15,385	(987,274)
Average Compensation Actually Paid to non-PEO NEOs	$45,820,973	$7,503,594	$22,828,947	$1,250,364

Compensation Actually Paid vs. Total Shareholder Return [Text Block]

COMPENSATION ACTUALLY PAID VERSUS TSR

Compensation Actually Paid vs. Net Income [Text Block]

COMPENSATION ACTUALLY PAID VERSUS NET INCOME

 

Compensation Actually Paid vs. Company Selected Measure [Text Block]

COMPENSATION ACTUALLY PAID VERSUS REVENUE

 

Total Shareholder Return Vs Peer Group [Text Block]

Tabular List [Table Text Block]

We measure performance for purposes of assessing pay for our PEO and other NEOs based on the following four unranked most important financial performance measures. For additional information, see How We Measure Performance on page 55.

Revenue

Compensation EBITDA

Absolute Total Stockholder Return

Relative Total Stockholder Return

Total Shareholder Return Amount

^[7]

$ 172.72

98.13

116.82

108.45

Peer Group Total Shareholder Return Amount

^[7],[8]

118.93

81.50

134.41

137.32

Net Income (Loss) Attributable to Parent

$ 4,289,000,000

$ 3,058,000,000

$ 1,165,000,000

$ 59,000,000

Company Selected Measure Amount

^[9]

21,365,000,000

17,090,000,000

10,958,000,000

6,796,000,000

PEO Name

Mr. Fogel

Mr. Fogel

Mr. Fogel

Mr. Fogel

Measure [Axis]: 1

Pay vs Performance Disclosure [Table]

Measure Name

Revenue

Measure [Axis]: 2

Pay vs Performance Disclosure [Table]

Measure Name

Compensation EBITDA

Measure [Axis]: 3

Pay vs Performance Disclosure [Table]

Measure Name

Absolute Total Stockholder Return

Measure [Axis]: 4

Pay vs Performance Disclosure [Table]

Measure Name

Relative Total Stockholder Return

PEO [Member] | Subtract Amounts Reported under the Stock Awards and Option Awards Column in the SCT

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

$ (40,929,691)

$ (26,258,740)

$ (48,010,707)

$ (6,954,041)

PEO [Member] | Fair Value of Awards Granted during Year that Remain Unvested as of Year End

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

94,201,594

35,126,298

49,934,780

7,376,718

PEO [Member] | Fair Value of Awards Granted during Year that Vest during Year

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

20,829,900

PEO [Member] | Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted prior to Year that were Outstanding and Unvested as of Year-end

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

30,945,880

(4,718,980)

379,688

(44,329,590)

PEO [Member] | Increase/Deduction for Change in Fair Value from prior Year-end to Vesting Date of Awards Granted prior to Year that Vested during Year

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

8,576,775

(3,287,130)

(18,559)

(6,446,305)

Non-PEO NEO [Member] | Subtract Average Amounts Reported under the Stock Awards and Option Awards Column in the SCT

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

(12,088,367)

(6,777,593)

(11,312,738)

(12,407,092)

Non-PEO NEO [Member] | Average Fair Value of Awards Granted during Year that Remain Unvested as of Year end

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

27,444,862

8,986,958

11,970,027

15,095,779

Non-PEO NEO [Member] | Average Fair Value of Awards Granted during Year that Vest during Year

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

4,463,550

Non-PEO NEO [Member] | Average Increase/Deduction for Change in Fair Value from prior Year-end to current Year-end of Awards Granted Prior to Year that were Outstanding and Unvested as of Year-End

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

9,603,511

(3,160,646)

3,433,026

(14,159,513)

Non-PEO NEO [Member] | Average Increase/Deduction for Change in Fair Value from Prior Year-end to Vesting Date of Awards Granted Prior to Year that Vested during Year

Pay vs Performance Disclosure [Table]

Adjustment to Compensation Amount

$ 5,498,221

$ (800,079)

$ 15,385

$ (987,274)

[1] Mr. Fogel served as Chief Executive Officer (PEO) in each year included in the table.

[2] Compensation Actually Paid to Mr. Fogel in 2023 reflects the following adjustments from column (b):

[3] Fair value or change in fair value, as applicable, of equity awards included in columns (c) and (e) was determined by reference to (1) for RSU awards, closing price on applicable year-end date(s) or, in the case of vesting dates, the actual vesting price, (2) for performance-based PSU awards (excluding PSUs with an rTSR component, TSR governor component, and a stock price appreciation component), the probable number of shares multiplied by the closing price on the applicable year-end date(s) or, in the case of awards that vested, the vested number of shares multiplied by the actual value per share on the vesting date, (3) for PSUs with an rTSR component and, for certain 2023 and 2022 PSUs, the TSR governor component, the probable number of shares multiplied by the share price on the applicable year-end date(s) which was derived using Monte Carlo simulations (because of the rTSR and TSR governor components of this award, as applicable), (4) for PSUs with an additional stock price appreciation component, the probable number of shares multiplied by the closing price on the applicable year-end date(s), plus the fair value of the stock price appreciation component on the applicable year-end date(s) or, in the case of awards that vested, the vested number of shares multiplied by the actual value per share on the vesting date, and (5) for stock options, a Black Scholes value as of the applicable year-end date(s) or vesting date, determined based on the same methodology as used to determine grant date fair value but using the closing stock price and assumptions including expected volatility, risk-free interest rate, expected dividends, and expected term as of the applicable revaluation date(s).

[4] Year-end stock prices used as part of the “Compensation Actually Paid” calculation were: 2023 $3,547.22, 2022 $2,015.28, 2021 $2,399.23, and 2020 $2,227.27.

[5] In 2023, 2022, and 2021, the non-PEO NEOs were Messrs. Goulden, Millones, and Pisano. In 2020, the non-PEO NEOs were Messrs. Goulden and Millones.

[6] Average Compensation Actually Paid to the non-PEO NEOs noted in footnote (5) in 2023 reflects the following adjustments from column (d):

[7] The amount listed for each year reflects what the cumulative value of $100 would be if that had been invested on December 31, 2019 (including reinvestment of dividends for applicable peers).

[8] Peer group total shareholder return reflects the RDG Internet Composite as reflected in our Annual Report on Form 10-K.

[9] Revenue is revenue under GAAP as reflected in the Company’s financial statements.