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Real Estate (Tables)
 3 Months Ended
Dec. 31, 2018
Real Estate [Abstract]  
Real Estate
Real estate consists of:
 
December 31,
2018
 
September 30,
2018
 
(In millions)
Developed and under development projects
$
644.7

 
$
463.1

Land held for development
48.5

 
34.9

 
$
693.2

 
$
498.0