Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Schedule of non-amortizable intangible assets

The following table provides additional information regarding ProAssurance's intangible assets.

	Gross Carrying Value				Accumulated Amortization				Amortization Expense
	December 31				December 31				Year Ended December 31
(In millions)	2016		2015		2016		2015		2016		2015		2014
Intangible Assets
Non-amortizable	$	25.8	$	25.8
Amortizable	93.6		94.0		$	35.0	$	27.3	$	8.1	$	8.3	$	10.3
Total Intangible Assets	$	119.4	$	119.8

Schedule of amortizable intangible assets

The following table provides additional information regarding ProAssurance's intangible assets.

	Gross Carrying Value				Accumulated Amortization				Amortization Expense
	December 31				December 31				Year Ended December 31
(In millions)	2016		2015		2016		2015		2016		2015		2014
Intangible Assets
Non-amortizable	$	25.8	$	25.8
Amortizable	93.6		94.0		$	35.0	$	27.3	$	8.1	$	8.3	$	10.3
Total Intangible Assets	$	119.4	$	119.8

Other liabilities

Other liabilities at December 31, 2016 and 2015 consisted of the following:

(In millions)	2016		2015
SPC dividends payable	$	34.3	$	16.7
Liability for unpaid dividends	265.7		69.4
Remaining other liabilities	122.3		116.2
Total Other liabilities	$	422.3	$	202.3