Other Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense	$ 6.0	$ 6.0	$ 6.0
Licensing Agreements [Member] | Workmen's Auto Insurance Company [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 1.4