XML 26 R74.htm IDEA: XBRL DOCUMENT
v3.19.3

Subsidiary Dividend Restrictions - Additional Information (Details) - Wright Flood $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2019 USD ($)
Dividend Restrictions [Line Items] |
Preferred stock, dividend rate, percentage | 100.00%
Maximum dividend payout that may be made without prior approval | $ 4.5
Maximum |
Dividend Restrictions [Line Items] |
Preferred stock, dividend rate, percentage | 10.00%

X
- Definition [Line Items] for Dividend Restrictions [Table] + References No definition available. + Details
Name: | bro_DividendRestrictionsLineItems
Namespace Prefix: | bro_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage rate used to calculate dividend payments on preferred stock. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_SubsegmentsAxis=bro_WrightNationalFloodInsuranceCompanyMember
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: |