Underwriting, Acquisition and Insurance Expenses (Tables)

12 Months Ended

Dec. 31, 2018

Underwriting Acquisition And Insurance Expenses [Abstract]

Underwriting, Acquisition and Insurance Expenses

Underwriting, acquisition and insurance expenses were as follows:

	For the Years Ended December 31,
(in millions)	2018			2017			2016
Commissions	$	280.4		$	255.9		$	234.0
General expenses	351.7			359.1			292.1
Premium taxes, boards and bureaus	32.5			32.3			25.2
	664.6			647.3			551.3
Net deferral of policy acquisition costs	(9.9		)	(11.9		)	(4.3		)
Total underwriting, acquisition and insurance expenses	$	654.7		$	635.4		$	547.0