Incentive Plan - Schedule of Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Long-term incentive units
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	$ 5.2	$ 4.2
Deferred compensation, capitalized		0.1
Unearned Compensation	$ 38.4		$ 19.8
Expected period to recognize unearned compensation (in years)	2 years 6 months
Market-based performance awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	$ 5.0	6.2
Deferred compensation, capitalized	0.2	0.4
Unearned Compensation	$ 54.4		39.2
Expected period to recognize unearned compensation (in years)	2 years 7 months 6 days
Interxion awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	$ 0.9	10.5
Unearned Compensation	$ 5.9		8.5
Expected period to recognize unearned compensation (in years)	1 year 3 months 18 days
Restricted Stock Units
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	$ 5.3	6.0
Deferred compensation, capitalized	1.0	$ 0.7
Unearned Compensation	$ 75.6		$ 44.5
Expected period to recognize unearned compensation (in years)	3 years

Deferred Compensation Arrangement with Individual, Capitalized.

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
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-Topic 718
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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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