Other Financial Statement Details - Property, Plant and Equipment (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 3,181.5		$ 3,096.7
Less: accumulated depreciation and amortization	2,289.3		2,242.0
Total property, plant and equipment, net	892.2		854.7
Depreciation expense	41.2	$ 41.1
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	83.2		83.2
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	661.6		659.7
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	2,313.7		2,251.1
Projects in process
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 123.0		$ 102.7