Restructuring - Summary of Liabilities Recognized Related to Restructuring Plan (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2019
2023 Restructuring Plan [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	$ 14.2
Additions	100.7	$ 12.8
Cash payments	(88.2)	(1.0)
Foreign currency exchange rate changes	(1.2)
Non-cash activity	1.6	2.4
Ending Balance	27.1	14.2
Expense incurred since the start of the Restructuring Plan	113.5
Expense estimated to be recognized for the Restructuring Plan	120.0	120.0
2023 Restructuring Plan [Member] | Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	9.2
Additions	84.6	9.2
Cash payments	(73.9)
Foreign currency exchange rate changes	(1.1)
Ending Balance	18.8	9.2
Expense incurred since the start of the Restructuring Plan	93.8
Expense estimated to be recognized for the Restructuring Plan	95.0
2023 Restructuring Plan [Member] | Contract Termination [Member]
Restructuring Cost And Reserve [Line Items]
Additions	3.1
Cash payments	(1.7)
Ending Balance	1.4
Expense incurred since the start of the Restructuring Plan	3.1
Expense estimated to be recognized for the Restructuring Plan	5.0
2023 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	5.0
Additions	13.0	3.6
Cash payments	(12.6)	(1.0)
Foreign currency exchange rate changes	(0.1)
Non-cash activity	1.6	2.4
Ending Balance	6.9	5.0
Expense incurred since the start of the Restructuring Plan	16.6
Expense estimated to be recognized for the Restructuring Plan	20.0
2021 Restructuring Plan [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	24.7	38.6	$ 32.1
Additions	0.2	37.3	99.7
Cash payments	(20.1)	(52.3)	(95.1)
Foreign currency exchange rate changes	(0.9)	1.1	1.9
Ending Balance	3.9	24.7	38.6
Expense incurred since the start of the Restructuring Plan	169.3
Expense estimated to be recognized for the Restructuring Plan				$ 170.0
2021 Restructuring Plan [Member] | Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	4.2	10.5	19.5
Additions	(2.1)	6.0	33.6
Cash payments	(1.5)	(12.5)	(43.4)
Foreign currency exchange rate changes	(0.1)	0.2	0.8
Ending Balance	0.5	4.2	10.5
Expense incurred since the start of the Restructuring Plan	57.0
2021 Restructuring Plan [Member] | Contract Termination [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	17.6	25.0	2.3
Additions	(0.1)	22.0	49.5
Cash payments	(14.8)	(30.2)	(27.8)
Foreign currency exchange rate changes	(0.7)	0.8	1.0
Ending Balance	2.0	17.6	25.0
Expense incurred since the start of the Restructuring Plan	73.7
2021 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	2.9	3.1	10.3
Additions	2.4	9.3	16.6
Cash payments	(3.8)	(9.6)	(23.9)
Foreign currency exchange rate changes	(0.1)	0.1	0.1
Ending Balance	1.4	2.9	3.1
Expense incurred since the start of the Restructuring Plan	38.6
2019 Restructuring Plan [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	52.3	44.3	31.3
Additions	48.1	41.5	69.9
Cash payments	(57.0)	(33.2)	(54.0)
Foreign currency exchange rate changes	(0.3)	(0.3)	(2.9)
Ending Balance	43.1	52.3	44.3
Expense incurred since the start of the Restructuring Plan	367.5
Expense estimated to be recognized for the Restructuring Plan	400.0				$ 400.0
2019 Restructuring Plan [Member] | Employee Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	43.8	28.9	14.8
Additions	26.4	17.4	29.1
Cash payments	(32.0)	(2.1)	(13.4)
Foreign currency exchange rate changes	(0.2)	(0.4)	(1.6)
Ending Balance	38.0	43.8	28.9
Expense incurred since the start of the Restructuring Plan	152.1
Expense estimated to be recognized for the Restructuring Plan	160.0
2019 Restructuring Plan [Member] | Contract Termination [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	5.6	9.0	16.5
Additions			0.7
Cash payments	(1.8)	(3.4)	(7.3)
Foreign currency exchange rate changes			(0.9)
Ending Balance	3.8	5.6	9.0
Expense incurred since the start of the Restructuring Plan	35.0
Expense estimated to be recognized for the Restructuring Plan	35.0
2019 Restructuring Plan [Member] | Other Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Beginning Balance	2.9	6.4	0.0
Additions	21.7	24.1	40.1
Cash payments	(23.2)	(27.7)	(33.3)
Foreign currency exchange rate changes	(0.1)	0.1	(0.4)
Ending Balance	1.3	$ 2.9	$ 6.4
Expense incurred since the start of the Restructuring Plan	180.4
Expense estimated to be recognized for the Restructuring Plan	$ 205.0