XML 68 R57.htm IDEA: XBRL DOCUMENT
v3.22.1

GEOGRAPHICAL BREAKDOWN OF GROSS WRITTEN PREMIUM (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Effects of Reinsurance [Line Items] |  |
Total | $ 187.2 | $ 202.5
Assumed | 13.7 | 0.0
Texas |  |
Effects of Reinsurance [Line Items] |  |
Total | 37.3 | 43.0
Georgia |  |
Effects of Reinsurance [Line Items] |  |
Total | 18.8 | 19.0
Louisiana |  |
Effects of Reinsurance [Line Items] |  |
Total | 10.7 | 10.3
Colorado |  |
Effects of Reinsurance [Line Items] |  |
Total | 10.7 | 8.9
Pennsylvania |  |
Effects of Reinsurance [Line Items] |  |
Total | 10.0 | 10.4
Utah |  |
Effects of Reinsurance [Line Items] |  |
Total | 9.0 | 8.6
Nevada |  |
Effects of Reinsurance [Line Items] |  |
Total | 8.7 | 8.3
South Carolina |  |
Effects of Reinsurance [Line Items] |  |
Total | 7.1 | 6.1
Oklahoma |  |
Effects of Reinsurance [Line Items] |  |
Total | 6.3 | 6.6
Missouri |  |
Effects of Reinsurance [Line Items] |  |
Total | 6.0 | 7.9
All others states |  |
Effects of Reinsurance [Line Items] |  |
Total | $ 62.6 | $ 73.4
Geographic Concentration Risk | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 100.00% | 100.00%
Geographic Concentration Risk | Texas | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 19.90% | 21.20%
Geographic Concentration Risk | Georgia | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 10.00% | 9.40%
Geographic Concentration Risk | Louisiana | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 5.70% | 5.10%
Geographic Concentration Risk | Colorado | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 5.70% | 4.40%
Geographic Concentration Risk | Pennsylvania | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 5.30% | 5.10%
Geographic Concentration Risk | Utah | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 4.80% | 4.20%
Geographic Concentration Risk | Nevada | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 4.60% | 4.10%
Geographic Concentration Risk | South Carolina | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 3.80% | 3.00%
Geographic Concentration Risk | Oklahoma | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 3.40% | 3.30%
Geographic Concentration Risk | Missouri | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 3.20% | 3.90%
Geographic Concentration Risk | All others states | Gross Written Premiums |  |
Effects of Reinsurance [Line Items] |  |
Concentration percentage | 33.60% | 36.30%

X
- Definition Amount of written premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
Name: | us-gaap_AssumedPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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_EffectsOfReinsuranceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of direct and assumed premiums written. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
Name: | us-gaap_PremiumsWrittenGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_TX
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_GA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_LA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CO
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_PA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_UT
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_NV
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_SC
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_OK
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MO
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=root_AllOtherStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=root_GrossWrittenPremiumsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |