XML 90 R73.htm IDEA: XBRL DOCUMENT
v3.20.4

Stock Based Compensation - Additional Information (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2020 shares | Apr. 30, 2019 shares | Jan. 31, 2018 shares | Jul. 31, 2009 | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2016 | Dec. 31, 2015 | Aug. 31, 2020 $ / shares | Jul. 31, 2020 USD ($) $ / shares shares | Aug. 31, 2019 $ / shares | Jul. 31, 2019 USD ($) $ / shares shares | May 01, 2019 shares | Aug. 31, 2018 $ / shares | Jul. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares available to be granted under award stock plan |  |  |  |  | 28,800,000 |  |  |  |  |  |  |  |  |  |  |  |
Incremental increases in average stock price from initial grant price |  |  |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, award requisite service period |  |  |  | 20 years | 15 years |  |  |  |  |  |  |  |  |  |  |  |
Attainment age of stock plan |  |  |  |  | attainment of age 64 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, options, grants in period, gross |  |  |  |  | 10,217,232 |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation arrangement by share based payment award equity instruments other than options awarded shares outstanding number |  |  |  |  | 909,828 |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation arrangement by share based payment award equity instruments other than options distributed shares outstanding number |  |  |  |  | 9,307,404 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit | $ / shares |  |  |  |  | $ 8.30 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit | $ / shares |  |  |  |  | $ 10.31 |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period, fair value | $ |  |  |  |  | $ 5,000 | $ 3,500 | $ 11,900 |  |  |  |  |  |  |  |  |  |
Number of shares authorized |  |  |  |  | 34,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Maximum employee subscription rate |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |
Compensation cost not yet recognized | $ |  |  |  |  | $ 112,600 |  |  |  |  |  |  |  |  |  |  |  |
Compensation cost not yet recognized, period for recognition |  |  |  |  | 3 years 3 months 14 days |  |  |  |  |  |  |  |  |  |  |  |
Employee Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares available for grant |  |  |  |  | 5,378,467 |  |  |  |  |  |  |  |  |  |  |  |
Threshold period worked per week by employees |  |  |  |  | 20 |  |  |  |  |  |  |  |  |  |  |  |
Allotted value maximum | $ |  |  |  |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |
Subscription period beginning |  |  |  |  | August 1st |  |  |  |  |  |  |  |  |  |  |  |
Subscription period ending |  |  |  |  | July 31st |  |  |  |  |  |  |  |  |  |  |  |
Purchase price of common stock, percentage |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |
Percentage of market price |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |
Value of one year stock option percentage |  |  |  |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |
Estimated fair value per share option | $ / shares |  |  |  |  |  |  |  |  |  | $ 12.43 |  | $ 7.46 |  |  | $ 5.88 |  |
Stock awarded |  |  |  |  |  |  |  |  |  |  | 962,131 |  | 976,303 |  |  | 985,601 |
Shares issued aggregate purchase value | $ |  |  |  |  |  |  |  |  |  |  | $ 29,300 |  | $ 24,000 |  |  | $ 18,700 |
Shares issued aggregate purchase price per share | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 30.51 |  | $ 24.63 |  |  | $ 18.96 |
Shares held in employee stock option plan, suspense shares |  |  |  |  | 381,371 | 419,446 | 402,349 |  |  |  |  |  |  |  |  |  |
Cash received from proceeds by participants | $ |  |  |  |  | $ 14,800 | $ 12,800 | $ 9,900 |  |  |  |  |  |  |  |  |  |
2019 Stock Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares of stock reserved for issuance under stock incentive plans |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,283,475 |  |  |
Number of shares available for grant |  |  |  |  | 8,624,668 |  |  |  |  |  |  |  |  | 6,957,897 |  |  |
2010 SIP and 2019 SIP |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation arrangement by share based payment award equity instruments other than options awarded shares outstanding number |  |  |  |  | 6,919,847 | 8,070,576 | 6,595,319 |  |  |  |  |  |  |  |  |  | 4,809,604
2010 SIP and 2019 SIP | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock vesting period |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Performance measurement period |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Percentage of payout |  |  |  |  |  |  |  | 0.00% | 0.00% |  |  |  |  |  |  |  |
2010 SIP and 2019 SIP | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock vesting period |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |  |  |
Performance measurement period |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |
Percentage of payout |  |  |  |  |  |  |  | 200.00% | 100.00% |  |  |  |  |  |  |  |
2010 Stock Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock issued to directors shares | 16,490 | 27,885 | 26,620 |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Allotted​Value​Maximum + References No definition available. + Details
Name: | bro_AllottedValueMaximum
Namespace Prefix: | bro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Attainment age of stock plan. + References No definition available. + Details
Name: | bro_AttainmentAgeOfStockPlan
Namespace Prefix: | bro_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash​Received​From​Proceeds​ByParticipants + References No definition available. + Details
Name: | bro_CashReceivedFromProceedsByParticipants
Namespace Prefix: | bro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Common Stock Issued to Directors Shares + References No definition available. + Details
Name: | bro_CommonStockIssuedToDirectorsShares
Namespace Prefix: | bro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated​Fair​Value​Per​Share​Option + References No definition available. + Details
Name: | bro_EstimatedFairValuePerShareOption
Namespace Prefix: | bro_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Incremental increases in average stock price from initial grant price. + References No definition available. + Details
Name: | bro_IncrementalIncreasesInAverageStockPriceFromInitialGrantPrice
Namespace Prefix: | bro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum number of shares available to be granted under award stock plan. + References No definition available. + Details
Name: | bro_MaximumNumberOfSharesAvailableToBeGrantedUnderAwardStockPlan
Namespace Prefix: | bro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by share based payment award equity instruments other than options awarded shares outstanding number. + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAwardedSharesOutstandingNumber
Namespace Prefix: | bro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by Share based payment award equity instruments other than options distributed shares outstanding number. + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDistributedSharesOutstandingNumber
Namespace Prefix: | bro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Percent​OfMarket​Price + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentOfMarketPrice
Namespace Prefix: | bro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based compensation arrangement by share-based payment award, performance measurement period. + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceMeasurementPeriod
Namespace Prefix: | bro_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based compensation arrangement by share-based payment award, performance stock awards payout percentage + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceStockAwardsPayoutPercentage
Namespace Prefix: | bro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Shares​Issued + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssued
Namespace Prefix: | bro_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Shares​Issued​Aggregate​Purchase​Price​Per​Share + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAggregatePurchasePricePerShare
Namespace Prefix: | bro_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Shares​Issued​Aggregate​Purchase​Value + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAggregatePurchaseValue
Namespace Prefix: | bro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Subscription​Period​Beginning + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardSubscriptionPeriodBeginning
Namespace Prefix: | bro_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Subscription​Period​Ending + References No definition available. + Details
Name: | bro_ShareBasedCompensationArrangementByShareBasedPaymentAwardSubscriptionPeriodEnding
Namespace Prefix: | bro_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold​Period​Worked​Per​Week​ByEmployees + References No definition available. + Details
Name: | bro_ThresholdPeriodWorkedPerWeekByEmployees
Namespace Prefix: | bro_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value​OfOne​Year​Stock​Option​Percentage + References No definition available. + Details
Name: | bro_ValueOfOneYearStockOptionPercentage
Namespace Prefix: | bro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate number of common shares reserved for future issuance. + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchase price of common stock expressed as a percentage of its fair value. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of suspense shares held by the Employee Stock Option Plan at balance sheet date. Suspense shares are shares that have not been released, committed to be released or allocated to individual participant accounts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929 + Details
Name: | us-gaap_SharesHeldInEmployeeStockOptionPlanSuspenseShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | us-gaap_PlanNameAxis=bro_TwoThousandAndNineteenStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=bro_TwoThousandTenAndTwoThousandNineteenStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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_PlanNameAxis=bro_TwoThousandAndTenStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |