XML 74 R61.htm IDEA: XBRL DOCUMENT v3.21.1
Shareholders' Equity - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Aug. 31, 2019
Aug. 03, 2018
Equity, Class of Treasury Stock [Line Items]        
Net earnings, net of tax, attributable to noncontrolling interests $ 5.4 $ 20.5    
Shares authorized to be repurchased (in shares)     6,000,000.0 6,000,000.0
Shares repurchased (in shares)   900,000    
Total cost of shares repurchased   $ 63.8    
August 2019 Authorization        
Equity, Class of Treasury Stock [Line Items]        
Shares repurchased (in shares) 1,100,000 100,000    
Total cost of shares repurchased $ 100.1      
Shares remaining authorized for repurchase (in shares) 2,300,000      
August 2018 Authorization        
Equity, Class of Treasury Stock [Line Items]        
Shares repurchased (in shares)   800,000    
Shares remaining authorized for repurchase (in shares) 0      
Non-Controlling Interests        
Equity, Class of Treasury Stock [Line Items]        
Net earnings, net of tax, attributable to noncontrolling interests $ 0.9 $ 0.6