Restructuring - Summary of Liabilities Recognized Related to Restructuring Plan (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2021	Dec. 31, 2019
2021 Restructuring Plan [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		$ 38.6
Expenses	$ 6.0	24.2
Cash payments		(27.4)
Foreign currency exchange rate changes		0.8
Ending Balance	36.2	36.2
Expense incurred since the start of the Restructuring Plan	156.0	156.0
Expense estimated to be recognized for the Restructuring Plan	185.0	185.0	$ 185.0
2021 Restructuring Plan [Member] | Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		10.5
Expenses	1.5	3.9
Cash payments		(6.6)
Foreign currency exchange rate changes		0.2
Ending Balance	8.0	8.0
Expense incurred since the start of the Restructuring Plan	57.0	57.0
Expense estimated to be recognized for the Restructuring Plan	70.0	70.0
2021 Restructuring Plan [Member] | Contract Termination [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		25.0
Expenses	1.9	16.2
Cash payments		(17.7)
Foreign currency exchange rate changes		0.6
Ending Balance	24.1	24.1
Expense incurred since the start of the Restructuring Plan	68.0	68.0
Expense estimated to be recognized for the Restructuring Plan	80.0	80.0
2021 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		3.1
Expenses	2.6	4.1
Cash payments		(3.1)
Foreign currency exchange rate changes
Ending Balance	4.1	4.1
Expense incurred since the start of the Restructuring Plan	31.0	31.0
Expense estimated to be recognized for the Restructuring Plan	35.0	35.0
2019 Restructuring Plan [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		44.3
Expenses	8.3	14.4
Cash payments		(21.8)
Foreign currency exchange rate changes		1.0
Ending Balance	37.9	37.9
Expense incurred since the start of the Restructuring Plan	292.3	292.3
Expense estimated to be recognized for the Restructuring Plan	350.0	350.0		$ 350.0
2019 Restructuring Plan [Member] | Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		28.9
Expenses	(1.1)	(1.1)
Cash payments		(2.5)
Foreign currency exchange rate changes		0.9
Ending Balance	26.2	26.2
Expense incurred since the start of the Restructuring Plan	107.2	107.2
Expense estimated to be recognized for the Restructuring Plan	135.0	135.0
2019 Restructuring Plan [Member] | Contract Termination [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		9.0
Cash payments		(1.9)
Ending Balance	7.1	7.1
Expense incurred since the start of the Restructuring Plan	35.0	35.0
Expense estimated to be recognized for the Restructuring Plan	35.0	35.0
2019 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance		6.4
Expenses	9.4	15.5
Cash payments		(17.4)
Foreign currency exchange rate changes		0.1
Ending Balance	4.6	4.6
Expense incurred since the start of the Restructuring Plan	150.1	150.1
Expense estimated to be recognized for the Restructuring Plan	$ 180.0	$ 180.0