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Statutory Financial Information, Capital Requirements, and Restrictions on Dividends and Transfers of Funds (Tables)

12 Months Ended

Dec. 31, 2018

Insurance [Abstract]

Schedule of Insurance Subsidiaries Statutory Surplus Data

		State of Domicile		Unassigned Surplus							Statutory Surplus						Statutory Net Income
($ in millions)				2018				2017			2018			2017			2018			2017			2016
SICA		New Jersey		$	478.6			455.5			632.8			609.7			78.0			84.6			72.2
Selective Way Insurance Company ("SWIC")		New Jersey		300.2				276.1			349.3			325.1			47.5			43.6			41.2
SICSC		Indiana		119.4				112.9			150.7			144.1			16.5			17.9			17.4
SICSE		Indiana		92.2				86.2			117.7			111.8			12.9			14.7			13.4
SICNY		New York		86.5				78.8			114.2			106.5			12.0			13.4			12.9
Selective Insurance Company of New England ("SICNE")		New Jersey		19.9				16.1			50.0			46.3			5.6			6.3			5.9
Selective Auto Insurance Company of New Jersey ("SAICNJ")		New Jersey		50.3				42.1			93.2			84.9			9.9			11.4			11.5
MUSIC		New Jersey		23.0				21.4			91.5			89.9			9.4			10.3			9.7
Selective Casualty Insurance Company ("SCIC")		New Jersey		44.9				34.5			119.3			109.0			13.3			13.4			12.6
Selective Fire and Casualty Insurance Company ("SFCIC")		New Jersey		17.8				13.7			49.7			45.6			5.5			5.6			5.5
Total				$	1,232.8			1,137.3			1,768.4			1,672.9			210.6			221.2			202.3

Schedule of Insurance Subsidiaries Dividend Paid To Parent

Dividends				Twelve Months ended December 31, 2018				2019
($ in millions)		State of Domicile		Ordinary Dividends Paid				Maximum Ordinary Dividends
SICA		New Jersey		$	43.0			$	78.0
SWIC		New Jersey		19.0				47.5
SICSC		Indiana		10.0				16.5
SICSE		Indiana		7.5				12.9
SICNY		New York		4.5				11.4
SICNE		New Jersey		2.0				5.6
SAICNJ		New Jersey		2.5				9.9
MUSIC		New Jersey		7.1				9.4
SCIC		New Jersey		3.0				13.3
SFCIC		New Jersey		1.5				5.5
Total				$	100.1			$	210.0

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