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Goodwill and Other Intangible Assets - Fair Value of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2019	Jun. 28, 2019	Apr. 04, 2019	Apr. 01, 2019	Mar. 12, 2019	Dec. 03, 2018	May 18, 2018	May 11, 2018
NSM Holding Co LLC
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired	$ 653.0
Renewal Rights
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired		$ 82.5
NSM Holding Co LLC
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired								$ 383.0
Fresh Insurance Services Group Limited
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired							$ 54.6
KBK Insurance Group, Inc. & KBK Premium Services, Inc.
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired						$ 65.3
Embrace Pet Insurance
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired				$ 67.6
Kudu
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired			$ 9.8
Other Operations
Finite-Lived Intangible Assets [Line Items]
Goodwill and intangible assets acquired					$ 22.6
Other Assets | Embrace Pet Insurance
Finite-Lived Intangible Assets [Line Items]
Software				$ 3.4

X

- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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