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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Deferred Policy Acquisition Cost Amortization and Net Advertising Expense

The table below presents a summary of deferred policy acquisition cost amortization and net advertising expense:

	Year Ended December 31,
	2019				2018				2017
	(Amounts in millions)
Deferred policy acquisition cost amortization	$	602.1			$	572.2			$	555.4
Net advertising expense	42.2				40.9				37.4

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Summary of Deferred Policy Acquisition Cost Amortization and Net Advertising Expense [Table Text Block]

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