Revenue - Schedule of Contract Asset and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Accounts receivable	$ 115.0	$ 102.7
Contract asset	6.3	8.6	$ 6.3	$ 11.0
Contract liability	$ (12.5)	$ (12.5)	$ (8.7)	$ (19.4)

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant