XML 105 R86.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Stock Based Compensation Employee Stock Purchase Plan Details (Details) | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) shares | Aug. 31, 2018 $ / shares | Jul. 31, 2018 shares | Dec. 31, 2017 USD ($) shares | Aug. 31, 2017 $ / shares | Jul. 31, 2017 USD ($) $ / shares shares | Dec. 31, 2016 USD ($) shares | Aug. 31, 2016 $ / shares | Jul. 31, 2016 USD ($) $ / shares shares | Jul. 31, 2015 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate | 10.00% |  |  |  |  |  |  |  |  |
Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 8,697,491 |  |  |  |  |  |  |  |  |
Employee Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 7,316,901 |  |  |  |  |  |  |  |  |
Threshold​Period​Worked​Per​Week​ByEmployees | 20 |  |  |  |  |  |  |  |  |
Allotted​Value​Maximum | $ | $ 25,000 |  |  |  |  |  |  |  |  |
Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Subscription​Period​Beginning | --08-01 |  |  |  |  |  |  |  |  |
Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Subscription​Period​Ending | --07-31 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent | 85.00% |  |  |  |  |  |  |  |  |
Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Percent​OfMarket​Price | 15.00% |  |  |  |  |  |  |  |  |
Value​OfOne​Year​Stock​Option​Percentage | 85.00% |  |  |  |  |  |  |  |  |
Estimated​Fair​Value​Per​Share​Option | $ / shares |  | $ 5.88 |  |  | $ 4.32 |  |  | $ 3.81 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period |  |  | 985,601 |  |  | 1,058,024 |  |  | 1,029,330 |
Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Shares​Issued​Aggregate​Purchase​Value | $ |  |  |  |  |  | $ 18,700,000 |  |  | $ 16,400,000 | $ 15,000,000.0
Share​Based​Compensation​Arrangement​ByShare​Based​Payment​Award​Shares​Issued​Aggregate​Purchase​Price​Per​Share | $ / shares |  |  |  |  |  | $ 18.96 |  |  | $ 15.52 | $ 14.62
Shares held in Employee Stock Option Plan, Suspense Shares | 402,349 |  |  | 435,027 |  |  | 494,046 |  |  |
Cash​Received​From​Proceeds​ByParticipants | $ | $ 9,900,000 |  |  | $ 8,200,000 |  |  | $ 7,700,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 34,000,000 |  |  |  |  |  |  |  |  |

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 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 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 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​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 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65895303&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_PlanNameAxis=bro_StockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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