Property and Equipment - Schedule of Property and Equipment and Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Property and Equipment [Line Items]
Property and equipment, gross	$ 1,444.5	$ 1,393.1
Less: accumulated depreciation and amortization	(836.3)	(743.5)
Software And Capitalized Software Development Costs [Member]
Property and Equipment [Line Items]
Property and equipment, gross	703.2	667.6
Buildings [Member]
Property and Equipment [Line Items]
Property and equipment, gross	307.3	304.4
Computer Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	314.2	303.7
Rental Clocks [Member]
Property and Equipment [Line Items]
Property and equipment, gross	55.4	53.1
Furniture, Fixtures and Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	43.5	43.3
Other [Member]
Property and Equipment [Line Items]
Property and equipment, gross	20.9	21.0
Property and Equipment, net, Excluding Land and Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	608.2	649.6
Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	0.0	1.2
Land [Member]
Property and Equipment [Line Items]
Property and equipment, net	36.5	36.5
Property and Equipment, net, Including Land and Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	$ 644.7	$ 687.3

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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