Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2021	Aug. 31, 2020
Cash flows provided from (used in) operating activities:
Net income (loss)	$ 11.5	$ (14.5)
Less: (Income) Loss from discontinued operations	(0.3)	0.6
Income (Loss) from continuing operations	11.2	(13.9)
Adjustments to reconcile income (loss) from continuing operations to net cash provided from operating activities:
Depreciation and intangible amortization	8.9	9.0
Stock-based compensation	3.1	2.7
Deferred tax provision	0.2	1.4
Loss from joint ventures	0.2	0.1
Loss on sale of business	0.0	19.5
Customer contract termination costs	0.0	2.2
Impairment charges	2.3	5.8
Changes in certain assets and liabilities:
Accounts receivable	(14.5)	2.7
Contract assets	(2.8)	(0.1)
Inventories	14.4	18.8
Prepaid expenses and other current assets	(4.9)	15.8
Rotable assets supporting long-term programs	0.9	1.0
Accounts payable	17.3	(9.9)
Accrued and other liabilities	(14.4)	(15.2)
Payroll Support Program deferred credit	0.0	40.8
Deferred revenue on long-term programs	(2.0)	(17.9)
Other	(2.4)	(23.0)
Net cash provided from operating activities - continuing operations	17.5	39.8
Net cash used in operating activities - discontinued operations	(14.6)	(0.9)
Net cash provided from operating activities	2.9	38.9
Cash flows used in investing activities:
Property, plant and equipment expenditures	(2.2)	(3.3)
Other	(2.7)	1.6
Net cash used in investing activities - continuing operations	(4.9)	(1.7)
Cash flows used in financing activities:
Short-term borrowings, net	(5.0)	(355.0)
Cash dividends	0.0	(0.1)
Stock compensation activity	(0.5)	(1.5)
Net cash used in financing activities - continuing operations	(5.5)	(347.9)
Effect of exchange rate changes on cash	(0.1)	0.1
Decrease in cash and cash equivalents	(7.6)	(310.6)
Cash, cash equivalents, and restricted cash at beginning of period	60.2	424.7
Cash, cash equivalents, and restricted cash at end of period	52.6	114.1
Payroll Support Program Promissory Note
Cash flows used in financing activities:
Proceeds from Payroll Support Program note	$ 0.0	$ 8.7