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Capitalized Interest (Tables)
 3 Months Ended
Dec. 31, 2019
Capitalized Interest [Abstract]  
Capitalized Interest Costs [Table Text Block]
The following table summarizes the Company’s interest costs incurred, capitalized and expensed during the three months ended December 31, 2019 and 2018.
 
Three Months Ended December 31,
 
2019
 
2018
 
(In millions)
Capitalized interest, beginning of period
$
23.7

 
$
3.2

Interest incurred
9.9

 
2.8

Interest charged to cost of sales
(3.8
)
 
(0.7
)
Capitalized interest, end of period
$
29.8

 
$
5.3