Significant Accounting Policies and Practices - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) Partnership Voting_interest_model_entity Variable_interest_entity	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Significant Accounting Policies and Practices
Assets related to consolidated VIEs	$ 1,168.3		$ 1,168.3		$ 1,121.4
Liabilities related to consolidated VIEs	916.2		916.2		895.7
Restricted cash and cash equivalents	0.7		0.7		0.6
Allowance for doubtful accounts included in accounts receivable, net	4.6		$ 4.6		4.0
Number of ownership interest entities | Partnership			26
Investments under the equity method of accounting	12.1		$ 12.1		11.9
Equity earnings in related investments	0.7	$ 2.5	2.0	$ 4.0
Contingent cosideration liability	1.0		1.0
Probability weighting of potential payouts	1.0		1.0
Deferred tax assets	$ 0.3		0.3
Payment to former minority partner			$ 2.3
Former minority partner payments term			10 years
Additional payment to former minority partner			$ 4.5
Minority partner payment included in accrued and other current liabilities			$ 2.3
Internal-use Software
Significant Accounting Policies and Practices
Property, Plant and Equipment, Useful Life	3 years		3 years
Minimum | Equipment [Member]
Significant Accounting Policies and Practices
Property, Plant and Equipment, Useful Life	1 year		1 year
Minimum | Unconsolidated Entities
Significant Accounting Policies and Practices
Ownership interests percentage	30.00%		30.00%
Maximum | Equipment [Member]
Significant Accounting Policies and Practices
Property, Plant and Equipment, Useful Life	10 years		10 years
Maximum | Unconsolidated Entities
Significant Accounting Policies and Practices
Ownership interests percentage	50.00%		50.00%
Primary Beneficiary
Significant Accounting Policies and Practices
Assets related to consolidated VIEs	$ 58.1		$ 58.1		57.1
Liabilities related to consolidated VIEs	$ 45.9		$ 45.9		$ 50.9
Number of ownership interest entities | Variable_interest_entity			20
Not Primary Beneficiary
Significant Accounting Policies and Practices
Number of ownership interest entities | Voting_interest_model_entity			6