XML 57 R42.htm IDEA: XBRL DOCUMENT
v3.24.0.1

SHARE-BASED AWARDS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Summary of the Stock Option Activity | A summary of the stock option activity for the year ended December 31, 2023, is as follows:
| Number of Options (in thousands) |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in millions)
Balance – December 31, 2022 | 10,712 |  |  | $ | 2.13 |  |  | 3.5 |  | $ | 1 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (2,535) |  |  | 1.07 |  |  |  |  |
Expired | (357) |  |  | 2.87 |  |  |  |  |
Balance – December 31, 2023 | 7,820 |  |  | 2.44 |  |  | 3.3 |  | $ | 16 |
Exercisable – December 31, 2023 | 7,820 |  |  | 2.44 |  |  | 3.3 |  | $ | 16 |
Summary of the RSU Activity | A summary of the RSU activity for the year ended December 31, 2023, is as follows:
| Number of RSUs (in thousands) |  | Weighted- Average Grant-Date Fair Value
Unvested and outstanding – December 31, 2022 | 54,547 |  |  | $ | 10.29 |
Granted | 56,065 |  |  | 2.12 |
Vested | (35,776) |  |  | 5.05 |
Forfeited | (13,940) |  |  | 11.02 |
Unvested and outstanding – December 31, 2023 | 60,896 |  |  | $ | 4.05 |
Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions | The fair value of ESPP purchase rights is estimated at the date of grant using the Black-Scholes option-pricing valuation model. The following assumptions were applied in the model to estimate the grant-date fair value of the ESPP.
| Year Ended December 31, 2023 | Year Ended December 31, 2022
Fair value | $0.64 - $2.13 | $1.78- $3.55
Volatility | 101.8% - 119.1% | 94.5% - 101.4%
Risk-free rate | 5.06% - 5.47% | 0.60%- 3.34%
Expected life (in years) | 0.5 - 1.0 | 0.5
Expected dividend | $ | — |  | $ | — |
Summary of Stock-Based Compensation Expense in the Statements of Operations | The following table summarizes total stock-based compensation expense by function as presented in the consolidated statements of operations for the years ended December 31, 2023, 2022 and 2021, as follows (in millions):
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
General and administrative | $ | 63 |  |  | $ | 109 |  |  | $ | 463 |
Sales, marketing and operations | 16 |  |  | 18 |  |  | 13 |
Technology and development | 47 |  |  | 44 |  |  | 60 |
Total stock-based compensation expense | $ | 126 |  |  | $ | 171 |  |  | $ | 536 |
Summary of Assumptions Used in the Black-Scholes Model for Employee and non-Employee Stock Options | The Black-Scholes Model used to value stock options incorporates the following assumptions:
|  |  |  |  | Year Ended December 31,
|  |  |  |  | 2021
Fair value |  |  |  |  | $ | 15.00 |
Volatility |  |  |  |  | 73 | %
Risk-free rate |  |  |  |  | 1.09 | %
Expected life (in years) |  |  |  |  | 7
Expected dividend |  |  |  |  | $ | — |

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardEmployeeStockPurchasePlanValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration