Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate	1.54%	(0.22%)	0.35%	(0.31%)
Deferred employer payroll taxes	$ 1.8		$ 1.8
Deferred employer payroll taxes, current	0.9		0.9
Deferred employer payroll taxes, noncurrent	$ 0.9		$ 0.9