Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Capital contributions to subsidiaries.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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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.

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The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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Amount of right to receive securities collateral under master netting arrangements that have not been offset against derivative liabilities.

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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Bonds or similar securities issued by state, city, or local governments or the agencies operated by state, city, or local governments which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Dividends received on equity and other investments during the current period.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Condensed Financial Information of Registrant Condensed Financial Information of Registrant (Narratives) (Details) - USD ($)						12 Months Ended
	Jan. 12, 2015	Jan. 02, 2015	Feb. 13, 2014	Aug. 09, 2013	Jul. 02, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 03, 2015
Condensed Financial Statements, Captions [Line Items]
Proceeds from special purpose investment vehicles						$ 4,900,000	$ 8,900,000
Proceeds from dividends received						111,000,000	133,000,000	$ 225,000,000
Capital contributions to subsidiaries						30,125,000	90,125,000	$ 30,125,000
Escrow deposit recovery						2,000,000
Loan maximum borrowing capacity					$ 250,000,000
Revolving credit facility term					5 years
Credit facility						180,000,000
Revolving Credit Facility [Member]
Condensed Financial Statements, Captions [Line Items]
Loan maximum borrowing capacity					$ 200,000,000		250,000,000		$ 250,000,000
Revolving credit facility term					5 years
Credit facility						$ 180,000,000
Interest rate at period end						1.73%
Workmen's Auto Insurance Company [Member]
Condensed Financial Statements, Captions [Line Items]
Consideration paid in cash		$ 8,000,000
Amount held in escrow		$ 2,000,000
Term for escrow security payment		3 years
Capital contribution amount	$ 15,000,000
Mcc [Member]
Condensed Financial Statements, Captions [Line Items]
Credit facility						$ 120,000,000
Bank loan						20,000,000
Municipal bonds, fair value						175,000,000
Total borrowing guaranteed						140,000,000
Swap [Member] \| FFL [Member]
Condensed Financial Statements, Captions [Line Items]
Swap agreement collateral						30,000,000
Notional amount						$ 108,000,000	$ 95,000,000
Term of swap agreement			1 year			1 year	1 year
Swap [Member] \| FFL [Member] \| LIBOR [Member]
Condensed Financial Statements, Captions [Line Items]
Basis spread on variable rate			1.45%	1.45%		1.45%	1.45%
Swap [Member] \| AFL [Member]
Condensed Financial Statements, Captions [Line Items]
Swap agreement collateral						$ 40,000,000
Notional amount						$ 152,000,000	$ 124,000,000
Term of swap agreement				3 years		1 year
Swap [Member] \| AFL [Member] \| LIBOR [Member]
Condensed Financial Statements, Captions [Line Items]
Basis spread on variable rate			1.35%	1.35%		1.35%	1.35%