XML 79 R78.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Mar. 06, 2020
Feb. 04, 2020
Dec. 05, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dividends [Abstract]              
Quarterly cash dividend paid (in dollars per share)     $ 0.3665        
Subsequent Event [Line Items]              
Dividends declared per common share (in dollars per share)       $ 0.3665 $ 0.3645 $ 1.0980 $ 1.0920
Quarterly cash dividend     $ 87.7        
Subsequent Event              
Subsequent Event [Line Items]              
Dividends declared per common share (in dollars per share)   $ 0.3670          
Scenario, Forecast              
Subsequent Event [Line Items]              
Quarterly cash dividend $ 88.0