XML 45 R89.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Segment Information (Revenue From Continuing Operations by Segment) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned | $ 469,850 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 462,639 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 463,625 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 456,495 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 451,312 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 437,568 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 426,252 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 420,940 us-gaap_PremiumsEarnedNetPropertyAndCasualty | $ 1,852,609 us-gaap_PremiumsEarnedNetPropertyAndCasualty |  | $ 1,736,072 us-gaap_PremiumsEarnedNetPropertyAndCasualty |  | $ 1,584,119 us-gaap_PremiumsEarnedNetPropertyAndCasualty |
Other income |  |  |  |  |  |  |  |  | 16,945 us-gaap_OtherIncome |  | 12,294 us-gaap_OtherIncome |  | 9,118 us-gaap_OtherIncome |
Net Investment Income | 32,108 us-gaap_NetInvestmentIncome | 34,292 us-gaap_NetInvestmentIncome | 36,774 us-gaap_NetInvestmentIncome | 35,534 us-gaap_NetInvestmentIncome | 35,313 us-gaap_NetInvestmentIncome | 32,457 us-gaap_NetInvestmentIncome | 34,003 us-gaap_NetInvestmentIncome | 32,870 us-gaap_NetInvestmentIncome | 138,708 us-gaap_NetInvestmentIncome |  | 134,643 us-gaap_NetInvestmentIncome |  | 131,877 us-gaap_NetInvestmentIncome |
Net realized (gains) losses |  |  |  |  |  |  |  |  | 26,599 us-gaap_RealizedInvestmentGainsLosses |  | 20,732 us-gaap_RealizedInvestmentGainsLosses |  | 8,988 us-gaap_RealizedInvestmentGainsLosses |
Total investment revenues |  |  |  |  |  |  |  |  | 165,307 sigi_TotalInvestmentRevenues |  | 155,375 sigi_TotalInvestmentRevenues |  | 140,865 sigi_TotalInvestmentRevenues |
Total all segments |  |  |  |  |  |  |  |  | 2,034,514 sigi_SegmentReportingRevenue |  | 1,903,648 sigi_SegmentReportingRevenue |  | 1,733,811 sigi_SegmentReportingRevenue |
Total revenues |  |  |  |  |  |  |  |  | 2,034,861 us-gaap_Revenues |  | 1,903,741 us-gaap_Revenues |  | 1,734,102 us-gaap_Revenues |
Miscellaneous Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | 16,598 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember | [1] | 12,201 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember | [2] | 8,827 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember | [3]
Other Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | 347 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherRevenueMember |  | 93 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherRevenueMember |  | 291 us-gaap_OtherIncome / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherRevenueMember |
Standard Commercial Lines [Member] | Commercial Automobile [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 333,310 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |  | 310,994 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |  | 288,010 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |
Standard Commercial Lines [Member] | Workers' Compensation [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 274,585 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_WorkersCompensationMember |  | 267,612 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_WorkersCompensationMember |  | 262,108 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_WorkersCompensationMember |
Standard Commercial Lines [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 444,938 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |  | 405,322 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |  | 373,381 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |
Standard Commercial Lines [Member] | Commercial Property [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 244,792 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |  | 224,412 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |  | 202,340 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |
Standard Commercial Lines [Member] | Business Owners' Policies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 85,788 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_BusinessOwnersPoliciesMember |  | 77,097 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_BusinessOwnersPoliciesMember |  | 68,462 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_BusinessOwnersPoliciesMember |
Standard Commercial Lines [Member] | Bonds Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 19,288 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_SuretySegmentMember |  | 19,000 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_SuretySegmentMember |  | 18,891 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_SuretySegmentMember |
Standard Commercial Lines [Member] | Other Commercial [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 13,011 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherCommercialMember |  | 12,182 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherCommercialMember |  | 12,143 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherCommercialMember |
Standard Commercial Lines [Member] | Total standard Commercial Lines [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 1,430,459 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |  | 1,326,872 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |  | 1,232,338 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |
Standard Commercial Lines [Member] | Miscellaneous Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | 14,747 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | 10,253 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | 7,003 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardCommercialLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |
Standard Personal Lines [Member] | Personal Automobile [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 151,317 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_PersonalAutomobileMember |  | 152,005 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_PersonalAutomobileMember |  | 152,142 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_PersonalAutomobileMember |
Standard Personal Lines [Member] | Homeowners [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 134,273 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_HomeownersMember |  | 127,991 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_HomeownersMember |  | 113,850 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_HomeownersMember |
Standard Personal Lines [Member] | Other Personal [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 11,157 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherPersonalMember |  | 14,336 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherPersonalMember |  | 13,563 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_OtherPersonalMember |
Standard Personal Lines [Member] | Total Standard Personal Lines [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 298,581 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember |  | 296,280 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember |  | 281,379 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyPersonalInsuranceProductLineMember |
Standard Personal Lines [Member] | Miscellaneous Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | 1,834 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | 1,948 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | 1,824 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_StandardPersonalLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |
E&S Lines [Member] | Commercial Automobile [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 5,436 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |  | 4,306 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |  | 1,810 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_CommercialAutomobileMember |
E&S Lines [Member] | General Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 96,142 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |  | 88,761 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |  | 59,721 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_GeneralLiabilityMember |
E&S Lines [Member] | Commercial Property [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 38,572 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |  | 32,054 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |  | 17,698 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_PropertyAndCasualtyCommercialInsuranceProductLineMember |
E&S Lines [Member] | Total standard Commercial Lines [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 140,167 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |  | 125,121 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |  | 79,229 us-gaap_PremiumsEarnedNetPropertyAndCasualty / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_TotalCommercialLinesMember |
E&S Lines [Member] | Miscellaneous Income [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other income |  |  |  |  |  |  |  |  | $ 17 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | $ 0 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |  | $ 0 us-gaap_OtherIncome / sigi_LineOfBusinessBySegmentAxis = sigi_ESLinesMember / us-gaap_StatementBusinessSegmentsAxis = sigi_MiscellaneousIncomeMember |
[1] | In addition to amounts related to the Standard Commercial Lines, Standard Personal Lines, and E&S Lines, “Other income” and “Other expenses” on the Consolidated Statements of Income includes holding company income and expense amounts of $347 and $24,580, respectively.
[2] | In addition to amounts related to the Standard Commercial Lines, Standard Personal Lines, and E&S Lines, “Other income” and “Other expenses” on the Consolidated Statements of Income includes holding company income and expense amounts of $93 and $27,894, respectively.
[3] | In addition to amounts related to the Standard Commercial Lines, Standard Personal Lines, and E&S Lines, “Other income” and “Other expenses” on the Consolidated Statements of Income includes holding company income and expense amounts of $291 and $20,642, respectively.

X
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