Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2022

Incentive Plans

Market Performance Based Awards

		Market
	2021-2022	Performance
	RMS Relative	Vesting
Level	Market Performance	Percentage
Below Threshold Level	≤ -500 basis points	0	%
Threshold Level	-500 basis points	25	%
Target Level	0 basis points	50	%
High Level	≥ 500 basis points	100	%

Schedule of compensation expense and unearned compensation

Below is a summary of our compensation expense and our unearned compensation (in millions):

													Expected
													period to
	Deferred Compensation								Unearned Compensation				recognize
	Expensed				Capitalized				As of		As of		unearned
	Three Months Ended June 30,								June 30,		December 31,		compensation
Type of incentive award	2022		2021		2022		2021		2022		2021		(in years)
Long-term incentive units	$	6.4	$	2.8	$	0.0	$	—	$	33.9	$	19.8	2.3
Performance-based awards		5.6		6.4		0.1		0.1		46.9		39.2	2.3
Service-based restricted stock units		6.8		5.3		1.4		0.9		68.8		44.5	2.8
Interxion awards		1.1		4.1		—		—		4.6		8.5	1.1
	Six Months Ended June 30,
	2022		2021		2022		2021
Long-term incentive units	$	11.6	$	6.0	$	0.1	$	0.1
Performance-based awards		10.6		14.9		0.3		0.5
Service-based restricted stock units		12.1		9.2		2.4		1.6
Interxion awards		2.0		14.6		—		—

Summary of Long-Term Incentive Unit Activity

		Weighted-Average
		Grant Date Fair
Unvested LTIP Units	Units	Value
Unvested, beginning of period	250,468	$	132.66
Granted	167,326		154.09
Vested	(127,117)		130.32
Cancelled or expired	—		—
Unvested, end of period	290,677	$	146.02

Summary of Restricted Stock Activity

		Weighted-Average
		Grant Date Fair
Unvested Restricted Stock Units	Shares	Value
Unvested, beginning of period	509,369	$	129.52
Granted	312,244		138.35
Vested	(169,630)		124.32
Cancelled or expired	(44,828)		133.37
Unvested, end of period	607,155	$	135.23