Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt - Prior Term Loan Facility (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2019	Dec. 22, 2017	Nov. 30, 2016
Debt Instrument [Line Items]
Long-term debt, gross	$ 3,011.7
Term Loan Due 2023 \| Revolving Credit Facility
Debt Instrument [Line Items]
Aggregate principal amount			$ 325.0	$ 2,320.0
Long-term debt, gross		$ 2,070.0