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Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Feb. 25, 2016
Mar. 31, 2016
Jun. 30, 2015
Mar. 31, 2015
Equity [Abstract]        
Stock repurchased (in shares)   3,124,053    
Common stock issued under stock compensation plan (in shares)   903,920    
Net decrease in period (in shares)   2,220,133    
Increase in quarterly cash dividend rate (in dollars per share)     $ 0.005  
Dividends declared (in dollars per share)   $ 0.085   $ 0.08
Dividends declared $ 24.6