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Incentive Plans - Schedule of Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Long-term incentive units
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	$ 3.6	$ 6.4	$ 6.4	$ 11.6
Deferred compensation, capitalized				0.1
Unearned Compensation	23.2		$ 23.2		$ 20.7
Expected period to recognize unearned compensation (in years)			2 years 4 months 24 days
Market-based performance awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	1.3	5.6	$ 5.4	10.6
Deferred compensation, capitalized	0.1	0.1	0.1	0.3
Unearned Compensation	31.2		$ 31.2		30.3
Expected period to recognize unearned compensation (in years)			2 years 6 months
Service Based Restricted Stock Units
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	8.3	6.8	$ 16.0	12.1
Deferred compensation, capitalized	1.4	1.4	2.5	2.4
Unearned Compensation	0.4		$ 0.4		55.4
Expected period to recognize unearned compensation (in years)			2 years 10 months 24 days
Interxion awards
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation, expensed	0.6	$ 1.1	$ 1.3	$ 2.0
Unearned Compensation	$ 84.0		$ 84.0		$ 1.9
Expected period to recognize unearned compensation (in years)			4 months 24 days

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

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