Restructuring and Other Integration Related Costs - Schedule of Restructuring and Other Integration Related Costs (Details) - Central Merger - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Cost of Services - Lease Type Contracts
Business Acquisition [Line Items]
Restructuring, and integration related costs	$ 0.0	$ 0.2	$ 0.2	$ 0.4
Cost of Services - Management Type Contracts
Business Acquisition [Line Items]
Restructuring, and integration related costs	(0.1)	0.4	1.5	0.6
General and Administrative Expenses
Business Acquisition [Line Items]
Restructuring, and integration related costs	$ 0.1	$ 3.7	$ 0.8	$ 4.2

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration