v3.24.2.u1
Segments and Geographic Information - Summary of Financial Information by Reportable Segment (Detail) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Segment Reporting Information [Line Items]    
Total assets $ 8,821.0 $ 9,371.9
Cash and cash equivalents 345.9 543.8
Deferred income tax assets 559.2 615.6
Operating Segments [Member]    
Segment Reporting Information [Line Items]    
Total assets 7,875.7 7,820.1
Operating Segments [Member] | CCS [Member]    
Segment Reporting Information [Line Items]    
Total assets 3,749.2 3,597.8
Operating Segments [Member] | OWN [Member]    
Segment Reporting Information [Line Items]    
Total assets 1,041.4 993.8
Operating Segments [Member] | NICS [Member]    
Segment Reporting Information [Line Items]    
Total assets 1,248.5 1,271.5
Operating Segments [Member] | ANS [Member]    
Segment Reporting Information [Line Items]    
Total assets 1,836.6 1,957.0
Segment Reconciling Items [Member]    
Segment Reporting Information [Line Items]    
Cash and cash equivalents 345.9 543.8
Deferred income tax assets 559.2 615.6
Home business assets 38.2 113.8
Assets held for sale $ 2.0 $ 278.6