XML 100 R92.htm IDEA: XBRL DOCUMENT
v3.22.4

ORDINARY SHARES AND TREASURY STOCK (Details) $ / shares in Units, $ in Thousands, $ in Millions |  |  |  |  |  |  | 1 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 16, 2022 shares | Mar. 10, 2022 USD ($) | Nov. 03, 2021 USD ($) | Apr. 24, 2021 HKD ($) shares | Apr. 24, 2021 USD ($) shares | Mar. 08, 2019 Vote $ / shares shares | Sep. 22, 2016 Vote $ / shares shares | Dec. 31, 2020 HKD ($) | Dec. 31, 2020 USD ($) $ / shares shares | Jun. 30, 2022 HKD ($) shares | Jun. 30, 2022 USD ($) $ / shares shares | Jun. 30, 2021 HKD ($) shares | Sep. 30, 2022 HKD ($) shares | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2021 HKD ($) shares | Dec. 31, 2021 HKD ($) shares | Dec. 31, 2021 USD ($) $ / shares shares | Jun. 11, 2021 shares | Sep. 21, 2016 $ / shares shares
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, shares authorized |  |  |  |  |  |  | 403,750,000 |  |  |  |  |  |  |  |  |  |  |  | 807,500
Ordinary shares, par value (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.00001 | $ 0.00001 |  |  |  |  |  |  |  |  |  |  |  | $ 0.0050
Number of vote | Vote |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds after deducting commissions and offering expenses | $ |  |  |  |  |  |  |  |  |  |  |  | $ 10,856,525 |  |  | $ 10,856,525 |  |  |  |
Average price of share repurchase | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 4.59 |  |  | $ 4.59 |  |  | $ 5.13 |  |
Total consideration | $ |  |  |  |  |  |  |  |  |  | $ 2,731,027 |  |  | $ 2,796,464 |  |  |  |  |  |
ADS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased |  |  |  |  |  |  |  |  |  | 109,041,760 | 109,041,760 |  | 110,839,528 | 110,839,528 |  | 29,462,760 | 29,462,760 |  |
Average price of share repurchase | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 36.70 |  |  | $ 36.74 |  |  | $ 41.04 |  |
Total consideration |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,975,200 | $ 508.7 |  |  |  |  |
ADS | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share repurchased value | $ |  | $ 500.0 | $ 300.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class A ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, shares authorized |  |  |  |  |  | 48,700,000,000 |  |  |  |  | 48,700,000,000 |  |  | 48,700,000,000 |  |  | 48,700,000,000 |  |
Ordinary shares, par value (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.00001 |  |  |  |  | $ 0.00001 |  |  | $ 0.00001 |  |  | $ 0.00001 |  |
Number of vote | Vote |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares (in shares) |  |  |  | 87,400,000 | 87,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds after deducting commissions and offering expenses |  |  |  | $ 10,856,500 | $ 1,398.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares conversion | 64,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon exercise of employee share options/ restricted share units ("RSUs") (in shares) |  |  |  |  |  |  |  |  |  | 1,197,536 | 1,197,536 | 2,395,392 | 1,475,848 | 1,475,848 | 4,192,000 |  |  |  |
Shares issued upon vest of outstanding restricted shares units |  |  |  |  |  |  |  |  |  | 0 | 0 | 0 | 134,700 | 134,700 | 0 |  |  |  |
Total consideration |  |  |  |  |  |  |  |  |  | $ 3,909,800 | $ 500.3 |  |  |  |  | $ 1,178,800 | $ 151.2 |  |
Class A ordinary shares | Ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of ordinary shares (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 87,400,000 |  |  |  |
Shares issued upon exercise of employee share options/ restricted share units ("RSUs") (in shares) |  |  |  |  |  |  |  |  |  | 1,197,536 | 1,197,536 | 2,395,392 | 1,610,448 | 1,610,448 | 4,192,000 |  |  |  |
Class A ordinary shares | Private placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate gross proceeds from private placement |  |  |  |  |  |  |  | $ 2,035,000 | $ 262.5 |  |  |  |  |  |  |  |  |  |
Price per share | $ / shares |  |  |  |  |  |  |  |  | $ 4.89751 |  |  |  |  |  |  |  |  |  |
Class B ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, shares authorized |  |  |  |  |  | 800,000,000 |  |  |  |  | 800,000,000 |  |  | 800,000,000 |  |  | 800,000,000 |  |
Ordinary shares, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.00001 |  |  | $ 0.00001 |  |  | $ 0.00001 |  |
Number of vote | Vote |  |  |  |  |  | 20 |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares, number of shares undesignated with par value |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-Funded Warrants | Class A ordinary shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares of ordinary shares |  |  |  |  |  |  |  |  | 53,600,000 |  |  |  |  |  |  |  | 53,599,890 | 53,599,890 |
Shares cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110 | 110 |
Warrants exercise price | $ / shares |  |  |  |  |  |  |  |  | $ 0.00001 |  |  |  |  |  |  |  |  |  |
Pre-Funded Warrants | Class A ordinary shares | Private placement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ORDINARY SHARES AND TREASURY STOCK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants to purchase shares of ordinary shares |  |  |  |  |  |  |  |  | 53,600,000 |  |  |  |  |  |  |  |  | 53,599,890 |
Shares cancelled |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 110 |
Warrants exercise price | $ / shares |  |  |  |  |  |  |  |  | $ 0.00001 |  |  |  |  |  |  |  |  |  |

X
- Definition The number of common shares undesignated with a par value of US$0.00001. + References No definition available. + Details
Name: | futu_CommonStockNumberOfSharesUndesignatedWithParValue
Namespace Prefix: | futu_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of votes entitled per share. + References No definition available. + Details
Name: | futu_NumberOfVotesPerShare
Namespace Prefix: | futu_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares cancelled. + References No definition available. + Details
Name: | futu_SharesCancelled
Namespace Prefix: | futu_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1E -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of new stock issued during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(02) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
Name: | us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=dei_AdrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=futu_PreFundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |