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Real Estate (Tables)
 9 Months Ended
Jun. 30, 2022
Real Estate [Abstract]  
Schedule of Real Estate Properties Real estate consists of:
June 30,
2022		September 30,
2021
 (In millions)
Developed and under development projects$1,950.6 $1,824.7 
Undeveloped land103.7 80.5 
$2,054.3 $1,905.2