Goodwill and Other Intangible Assets - Fair Value of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Mar. 31, 2020	Jun. 28, 2019	Apr. 04, 2019	Apr. 01, 2019	Mar. 12, 2019
Goodwill [Line Items]
Goodwill, acquisition date fair value		$ 402.3	$ 392.4
Goodwill, Impairment Loss		7.6
Goodwill and other intangible assets		654.7	646.8
Goodwill		394.7	392.4
Renewal Rights
Goodwill [Line Items]
Goodwill and intangible assets acquired				$ 82.5
NSM Holding Co LLC
Goodwill [Line Items]
Goodwill, acquisition date fair value		381.6	379.1
Goodwill and intangible assets acquired			150.1
Goodwill		381.6	379.1
Kudu investments
Goodwill [Line Items]
Goodwill, acquisition date fair value		7.6	7.6
Goodwill		7.6	7.6
Other [Member]
Goodwill [Line Items]
Goodwill, acquisition date fair value		13.1	5.7
Goodwill, Impairment Loss		7.6
Goodwill		$ 5.5	$ 5.7
Embrace Pet Insurance
Goodwill [Line Items]
Capitalized Computer Software, Additions	$ 3.4
Goodwill and intangible assets acquired						$ 67.6
Goodwill						$ 52.2
Kudu
Goodwill [Line Items]
Goodwill and intangible assets acquired					$ 9.8
Other Operations
Goodwill [Line Items]
Goodwill and intangible assets acquired							$ 22.6