v3.26.1
Treasury - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2026
Apr. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Mar. 31, 2026
Sep. 26, 2024
Aug. 24, 2021
Sep. 21, 2020
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity     $ 1,272.0   $ 1,272.0            
Rate adjustment to one month Eurodollar rate on credit facility borrowings         1.00%            
Financial liability         $ 68.0   $ 70.0        
Debt instrument carrying amount     4,900.0   4,900.0   4,800.0        
Debt, due during the next 12 month     772.0   772.0            
Debt, due during months 13 to 24     79.0   79.0            
Debt, due during months 25 to 36     87.0   87.0            
Debt, due during months 37 to 48     1,980.0   1,980.0            
Debt, due during months 49 to 60     809.0   809.0            
Debt, due in greater than 60 months     1,130.0   1,130.0            
Fair value of debt     $ 4,700.0   4,700.0   $ 4,600.0        
Foreign Currency Forward Exchange Contracts                      
Equity Class Of Treasury Stock [Line Items]                      
Net cash inflows (outflows)         $ 12.0 $ (66.0)          
ABR-based loans                      
Equity Class Of Treasury Stock [Line Items]                      
Rate adjustment to weighted average federal funds rate for credit facility borrowings     0.50%   0.50%            
Letter of Credit                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility amount outstanding     $ 3.0   $ 3.0            
Revolving Credit Facility                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity   $ 1,500.0 1,500.0   1,500.0     $ 1,300.0      
Line of credit facility increased (decreased) amount   200.0                  
Revolving Credit Facility | Letter of Credit                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity     125.0   125.0            
Letters of credit, outstanding     225.0   225.0            
Amended Revolving Credit Facility                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility increased (decreased) amount   900.0                  
Tranche A Term Loan | Quarterly Payment Beginning on December 31, 2026 Through June 30, 2029                      
Equity Class Of Treasury Stock [Line Items]                      
Scheduled principal payments per quarter         16.9            
Tranche A Term Loan | Installment Payments per Quarter Through September 30, 2026                      
Equity Class Of Treasury Stock [Line Items]                      
Scheduled principal payments per quarter         9.4            
Tranche A Term Loan | Payment on September 26, 2029                      
Equity Class Of Treasury Stock [Line Items]                      
Scheduled principal payments per quarter         1,245.0            
Tranche A Term Loan | Quarterly Payment Beginning on September 30, 2028 Through June 30, 2029                      
Equity Class Of Treasury Stock [Line Items]                      
Scheduled principal payments per quarter         18.8            
Delayed Draw Term Loan A                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity     400.0   400.0            
Delayed Draw Term Loan A | Talkspace, Inc                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity   $ 400.0                  
Delayed Draw Term Loan A | Payment on September 26, 2029                      
Equity Class Of Treasury Stock [Line Items]                      
Scheduled principal payments per quarter         400.0            
Delayed Draw Short Term Loan | Subsequent Event                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity $ 700.0                    
Line of credit facility, maturity date Sep. 01, 2026                    
Senior notes, interest rate 1.65%                    
Senior Secured Notes                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date   Sep. 26, 2029                  
New Senior Secured Notes                      
Equity Class Of Treasury Stock [Line Items]                      
Senior notes, issued     3,000.0   $ 3,000.0            
New Senior Secured Notes | 4.625% Senior Secured Notes due 2029                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date         Oct. 15, 2029            
Senior notes, issued                 $ 500.0    
Senior notes, interest rate                 5.05%    
New Senior Secured Notes | 5.050% Senior Secured Notes due 2034                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date         Oct. 15, 2034            
Senior notes, issued                 $ 500.0    
Senior notes, interest rate                 4.625%    
New Senior Secured Notes | 1.65% Senior Secured Notes due 2026                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date         Sep. 01, 2026            
Senior notes, issued                   $ 700.0  
Senior notes, interest rate                   2.65%  
New Senior Secured Notes | 2.65% Senior Secured Notes due 2030                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date         Oct. 15, 2030            
Senior notes, issued                     $ 800.0
Senior notes, interest rate                     2.65%
New Senior Secured Notes | 2.65% Senior Secured Notes due 2032                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, maturity date         Jan. 15, 2032            
Senior notes, issued                   $ 500.0  
Senior notes, interest rate                   1.65%  
Term Loan A                      
Equity Class Of Treasury Stock [Line Items]                      
Line of credit facility, borrowing capacity   $ 1,455.0 $ 1,448.0   $ 1,448.0     $ 1,155.0      
Line of credit facility increased (decreased) amount   $ 300.0                  
Term Loan A | ABR-based loans                      
Equity Class Of Treasury Stock [Line Items]                      
Current applicable margins     0.25%   0.25%            
Term Loan A | One Month SOFR Rate Plus Index Based Loans                      
Equity Class Of Treasury Stock [Line Items]                      
Current applicable margins     1.25%   1.25%            
Term Loan A | Minimum | One Month SOFR Rate Plus Index Based Loans                      
Equity Class Of Treasury Stock [Line Items]                      
Consolidated Leverage Ratio     0.25%   0.25%            
Term Loan A | Minimum | One Three Six Month SOFR Rate Plus Index Based Loans                      
Equity Class Of Treasury Stock [Line Items]                      
Consolidated Leverage Ratio     1.25%   1.25%            
Term Loan A | Maximum | One Month SOFR Rate Plus Index Based Loans                      
Equity Class Of Treasury Stock [Line Items]                      
Consolidated Leverage Ratio     0.625%   0.625%            
Term Loan A | Maximum | One Three Six Month SOFR Rate Plus Index Based Loans                      
Equity Class Of Treasury Stock [Line Items]                      
Consolidated Leverage Ratio     1.625%   1.625%            
Revolving Credit, Term Loan A and Senior Notes                      
Equity Class Of Treasury Stock [Line Items]                      
Average outstanding borrowings     $ 4,610.0 $ 4,340.0 $ 4,600.0 $ 4,310.0          
Average effective interest rate     3.90% 4.10% 4.00% 4.10%