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Contingencies, Significant Estimates and Concentrations (Tables)

12 Months Ended

Sep. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Schedule of significant portion of revenues from the Department of Defense

The Company derived a significant portion of its revenue from the DoD, as follows (in millions):

		Fiscal Year Ended September 30,
		2021				2020				2019
DoD		$	2,395.1			$	2,300.4			$	2,006.9
Foreign military sales			139.2				71.2				27.7
Total DoD sales		$	2,534.3			$	2,371.6			$	2,034.6

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- Definition

Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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