Inventory

6 Months Ended

Mar. 31, 2017

Inventory, Net [Abstract]

INVENTORY

INVENTORY

Inventory consists of the following (in millions):

	As of
	March 31, 2017		September 30, 2016
Raw materials	$	18.4	$	18.5
Work-in-process	273.7		255.5
Finished goods	140.3		140.4
Finished goods held on consignment by customers	12.1		9.6
Total inventory	$	444.5	$	424.0