Intangible Assets, Goodwill and Other	9 Months Ended
	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill Disclosure	GoodwillDuring the second quarter of 2023, the Company identified impairment indicators impacting the fair value of the Preferred Property & Casualty Insurance business in connection with ongoing evaluation of strategic alternatives for the Preferred Insurance business. As a result, the business’s fair value was determined using a combination of available market information, market comparisons and a discounted cash flow valuation method based on the present value of future earnings. The fair value calculated in the second quarter of 2023 was lower than the carrying value of the business, resulting in a pre-tax impairment charge of $49.6 million and an after-tax impairment charge of $45.5 million. A substantial portion of the goodwill that was impaired was not tax deductible. The goodwill impairment charge is reported separately in the Condensed Consolidated Statements of Loss for the nine months ended September 30, 2023, with a corresponding reduction to goodwill in the Condensed Consolidated Balance Sheet as of September 30, 2023.