Income Taxes (Details) - USD ($)	3 Months Ended			10 Months Ended
	Feb. 28, 2021	May 31, 2020	Feb. 29, 2020	Dec. 31, 2020	Nov. 30, 2020
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income tax expense	$ 26,500,000		$ 9,100,000
Effective tax rate	21.40%		13.20%
Excess tax benefits related to stock-based compensation	$ (3,500,000)		$ (5,600,000)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount	1,400,000		1,000,000.0
Income Taxes Receivable, Alternative Minimum Tax, CARES Act		$ 39,300,000
Tax credits	(2,700,000)		(4,000,000.0)
Deferred tax assets	233,100,000				$ 249,100,000
Valuation allowance	18,000,000.0				18,000,000.0
Deferred Tax Assets, Tax Credit Carryforwards	0		$ 43,322,000
Adjustments to deferred tax valuation allowance	0
Gross unrecognized tax benefits (including interest and penalties)	0				$ 0
CARES Act Employee Retention Credit	$ 4,300,000
Maximum [Member]
Income Tax Contingency [Line Items]
RefundableTaxCreditAllowedPerEmployeeCARESAct				$ 5,000