Restructuring (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring and Related Activities [Abstract]

Summary of Liabilities Recognized Related to Restructuring Plan

The following table summarizes the liabilities recognized related to the 2021 Restructuring Plan (in millions):​​​​​​​

	Employee
	Termination		Contract
	Benefits		Terminations		Other		Total
Balance, December 31, 2020	$	—	$	—	$	—	$	—
Additions		19.5		2.3		10.3		32.1
Cash payments		—		—		—		—
Foreign currency exchange rate changes		—		—		—		—
Balance, December 31, 2021		19.5		2.3		10.3		32.1
Expense estimated to be recognized for the 2021 Restructuring Plan	$	62.0	$	167.0	$	11.0	$	240.0

 The following table summarizes the liabilities recognized related to the 2019 Restructuring Plan (in millions):

	Employee
	Termination			Contract
	Benefits			Terminations			Other			Total
Balance, December 31, 2018	$	—		$	—		$	—		$	—
Additions		22.3			—			12.2			34.5
Cash Payments		—			—			(8.1	)		(8.1	)
Balance, December 31, 2019		22.3			—			4.1			26.4
Additions		49.6			15.8			33.1			98.5
Cash payments		(35.5	)		(4.9	)		(22.1	)		(62.5	)
Foreign currency exchange rate changes		1.4			—			—			1.4
Balance, December 31, 2020		37.8			10.9			15.1			63.8
Additions		7.3			18.5			49.2			75.0
Cash payments		(28.7	)		(12.9	)		(64.2	)		(105.8	)
Foreign currency exchange rate changes		(1.6	)		—			(0.1	)		(1.7	)
Balance, December 31, 2021	$	14.8		$	16.5		$	—		$	31.3
Expense incurred since the start of the 2019 Restructuring Plan	$	79.2		$	34.3		$	94.5		$	208.0
Expense estimated to be recognized for the 2019 Restructuring Plan	$	175.0		$	40.0		$	145.0		$	360.0