Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Interest Rate Derivatives Designated as Cash Flow Hedges of Interest Rate Risk

As December 31, 2021, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk ($ in millions):

Interest Rate Derivatives (Level 2)	Number of Instruments	Notional Aggregate Principal Amount		Interest Cap / Swap Rate		Maturity Date
Interest rate cap contract	One	$	100.0	3.500	%	April 30, 2024
Interest rate swap contracts	Two	$	350.0	2.301	%	April 29, 2022
Forward-starting interest rate swap contracts - April 2022	Two	$	500.0	0.370	%	January 30, 2026

Schedule of Fair Value and Presentation in the Consolidated Balance Sheets for Derivatives

The following table summarizes the fair value and presentation on our Consolidated Balance Sheets for derivatives as of December 31, 2021 and December 31, 2020 (in millions):

	Fair Value of Derivative Instruments
Instrument	December 31, 2021				December 31, 2020
	Derivative Assets		Derivative Liabilities		Derivative Assets		Derivative Liabilities
Derivatives designated as hedging instruments
Interest rate cap contract(1)	$	—	$	0.1	$	—	$	0.2
Interest rate cap contract(2)	—		—		—		0.2
Interest rate swap contracts(1)	—		2.4		—		7.3
Interest rate swap contracts(2)	—		—		—		2.2
Forward-starting interest rate swap contracts(3)	0.7		—		—		—
Forward-starting interest rate swap contracts(4)	15.2		—		1.0		—
Total designated derivative fair value	15.9		2.5		1.0		9.9
Derivatives not designated as hedging instruments
Interest rate cap contract(1)	—		0.3		—		0.2
Interest rate cap contract(2)	—		—		—		0.2
Interest rate cap contract(4)	0.1		—		—		—
Total undesignated derivative fair value	0.1		0.3		—		0.4
Total derivative fair value	$	16.0	$	2.8	$	1.0	$	10.3

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(1) Included in Accrued expenses and other current liabilities on our Consolidated Balance Sheets.

(2) Included in Other long-term liabilities on our Consolidated Balance Sheets.

(3) Included in Prepaid expenses and other current assets on our Consolidated Balance Sheets.

(4) Included in Deferred costs and other assets, net of current portion on our Consolidated Balance Sheets.