v3.26.1
Fair Value - Schedule of Components of Fair Value Measurements of Financial Assets and Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Cash equivalents:    
Derivative assets $ 5.6 $ 4.5
Total assets $ 292.5 $ 281.7
Derivative asset, statement of financial position [extensible enumeration] Assets, Current, Sundry Assets, Current, Sundry
Liabilities:    
Derivative liabilities $ 2.2 $ 1.2
Total liabilities $ 68.5 $ 63.6
Derivative liability, statement of financial position [extensible enumeration] Liabilities, Noncurrent, Other current liabilities Liabilities, Noncurrent, Other current liabilities
Diversified investments associated with the Executive Stock Unit (ESU) Program    
Cash equivalents:    
Diversified investments associated with the Executive Stock Unit (ESU) Program $ 65.2 $ 60.2
Liabilities associated with the ESU Program    
Liabilities:    
Liabilities associated with the ESU Program 66.3 62.4
Bank time deposits with original maturities of three months or less    
Cash equivalents:    
Bank time deposits with original maturities of three months or less 221.7 217.0
Level 1    
Cash equivalents:    
Derivative assets 0.0 0.0
Total assets 65.2 60.2
Liabilities:    
Derivative liabilities 0.0 0.0
Total liabilities 66.3 62.4
Level 1 | Diversified investments associated with the Executive Stock Unit (ESU) Program    
Cash equivalents:    
Diversified investments associated with the Executive Stock Unit (ESU) Program 65.2 60.2
Level 1 | Liabilities associated with the ESU Program    
Liabilities:    
Liabilities associated with the ESU Program 66.3 62.4
Level 1 | Bank time deposits with original maturities of three months or less    
Cash equivalents:    
Bank time deposits with original maturities of three months or less 0.0 0.0
Level 2    
Cash equivalents:    
Derivative assets 5.6 4.5
Total assets 227.3 221.5
Liabilities:    
Derivative liabilities 2.2 1.2
Total liabilities 2.2 1.2
Level 2 | Diversified investments associated with the Executive Stock Unit (ESU) Program    
Cash equivalents:    
Diversified investments associated with the Executive Stock Unit (ESU) Program 0.0 0.0
Level 2 | Liabilities associated with the ESU Program    
Liabilities:    
Liabilities associated with the ESU Program 0.0 0.0
Level 2 | Bank time deposits with original maturities of three months or less    
Cash equivalents:    
Bank time deposits with original maturities of three months or less 221.7 217.0
Level 3    
Cash equivalents:    
Derivative assets 0.0 0.0
Total assets 0.0 0.0
Liabilities:    
Derivative liabilities 0.0 0.0
Total liabilities 0.0 0.0
Level 3 | Diversified investments associated with the Executive Stock Unit (ESU) Program    
Cash equivalents:    
Diversified investments associated with the Executive Stock Unit (ESU) Program 0.0 0.0
Level 3 | Liabilities associated with the ESU Program    
Liabilities:    
Liabilities associated with the ESU Program 0.0 0.0
Level 3 | Bank time deposits with original maturities of three months or less    
Cash equivalents:    
Bank time deposits with original maturities of three months or less $ 0.0 $ 0.0