Deferred Contract Costs - Summary of Deferred Contract Costs (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Total deferred contract costs	$ 25.4	$ 24.8
Prepaid expenses and other current assets
Capitalized Contract Cost [Line Items]
Total deferred contract costs	4.2	4.0
Other assets
Capitalized Contract Cost [Line Items]
Total deferred contract costs	$ 21.2	$ 20.8

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

Name:	us-gaap_CapitalizedContractCostNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant