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Goodwill and Intangible Assets, Net
 3 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net:
Amounts related to the Company’s amortization of intangible assets are as follows (in millions):
Three Months Ended
December 31,
20222021
Aggregate amortization expense$0.4 $0.4 
Amounts related to the Company’s goodwill are as follows (in millions):
December 31,
2022		September 30,
2022
Plant Nutrition$51.0 $50.9 
Other5.8 5.5 
Total$56.8 $56.4 
The change in goodwill between September 30, 2022, and December 31, 2022 was due to the impact from translating foreign-denominated amounts to U.S. dollars. As of December 31, 2022, there were no indicators necessitating an interim impairment test of the Company’s reporting units based on the Company’s review of operating performance, among other factors, for the relevant reporting units.