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v3.19.3.a.u2

Statutory Financial Information, Capital Requirements and Restrictions on Dividends and Transfers of Funds (Statutory Financial Information) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statutory unassigned surplus | $ 1,396.8 | $ 1,232.8 |
Statutory surplus | 1,932.4 | 1,768.4 |
Statutory net income | 292.7 | 210.6 | $ 221.2
Selective Insurace Company of America (SICA) [Member] |  |  |
Statutory unassigned surplus | 525.9 | 478.6 |
Statutory surplus | 680.1 | 632.8 |
Statutory net income | 113.9 | 78.0 | 84.6
Selective Way Insurance Company (SWIC) [Member] |  |  |
Statutory unassigned surplus | 339.2 | 300.2 |
Statutory surplus | 388.2 | 349.3 |
Statutory net income | 59.2 | 47.5 | 43.6
Selective Insurance Company of South Carolina (SICSC) [Member] |  |  |
Statutory unassigned surplus | 132.6 | 119.4 |
Statutory surplus | 163.8 | 150.7 |
Statutory net income | 23.9 | 16.5 | 17.9
Selective Insurance Company of the Southeast (SICSE) [Member] |  |  |
Statutory unassigned surplus | 103.1 | 92.2 |
Statutory surplus | 128.7 | 117.7 |
Statutory net income | 18.5 | 12.9 | 14.7
Selective Insurance Company of New York (SICNY) [Member] |  |  |
Statutory unassigned surplus | 99.4 | 86.5 |
Statutory surplus | 127.1 | 114.2 |
Statutory net income | 17.0 | 12.0 | 13.4
Selective Insurance Company of New England (SICNE) [Member] |  |  |
Statutory unassigned surplus | 25.3 | 19.9 |
Statutory surplus | 55.4 | 50.0 |
Statutory net income | 7.8 | 5.6 | 6.3
Selective Auto Insurance Company of New Jersey (SAICNJ) [Member] |  |  |
Statutory unassigned surplus | 62.5 | 50.3 |
Statutory surplus | 105.4 | 93.2 |
Statutory net income | 14.9 | 9.9 | 11.4
Mesa Underwriting Specialty Insurance Company (MUSIC) [Member] |  |  |
Statutory unassigned surplus | 27.1 | 23.0 |
Statutory surplus | 95.6 | 91.5 |
Statutory net income | 13.2 | 9.4 | 10.3
Selective Casualty Insurance Company (SCIC) [Member] |  |  |
Statutory unassigned surplus | 58.2 | 44.9 |
Statutory surplus | 132.7 | 119.3 |
Statutory net income | 16.8 | 13.3 | 13.4
Selective Fire and Casualty Insurance Company (SFCIC) [Member] |  |  |
Statutory unassigned surplus | 23.5 | 17.8 |
Statutory surplus | 55.4 | 49.7 |
Statutory net income | $ 7.5 | $ 5.5 | $ 5.6

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