Other Financial Statement Details (Tables)

12 Months Ended

Mar. 31, 2018

Accounts Receivable, Net [Abstract]

Accounts Receivable Schedule

Accounts receivable consists of the following (amounts in millions):

	March 31,
	2018		2017
Trade accounts receivable	$	557.8	$	473.3
Other	8.1		7.2
Total accounts receivable, gross	565.9		480.5
Less allowance for doubtful accounts	2.2		2.1
Total accounts receivable, net	$	563.7	$	478.4

Schedule of Inventory, Current

The components of inventories consist of the following (amounts in millions):

	March 31,
	2018		2017
Raw materials	$	26.0	$	14.4
Work in process	311.8		268.3
Finished goods	138.4		134.5
Total inventories	$	476.2	$	417.2

Property, Plant and Equipment

Property, plant and equipment consists of the following (amounts in millions):

	March 31,
	2018		2017
Land	$	73.4	$	73.4
Building and building improvements	508.5		499.7
Machinery and equipment	1,943.9		1,774.9
Projects in process	118.3		104.3
Total property, plant and equipment, gross	2,644.1		2,452.3
Less accumulated depreciation and amortization	1,876.2		1,769.0
Total property, plant and equipment, net	$	767.9	$	683.3