Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Cash flows provided by (used in) operating activities:
Net income	$ 45.2	$ 32.3
Less: Income from discontinued operations	(0.4)	(0.3)
Income from continuing operations	44.8	32.0
Adjustments to reconcile income from continuing operations to net cash provided by (used in) operating activities:
Depreciation and intangible amortization	13.3	17.8
Stock-based compensation	6.9	4.7
Provision for (Recovery of) credit losses	(0.1)	0.8
Loss from joint ventures	1.3	0.6
Losses on sale and exit of business	0.1	1.3
Impairment charges		2.9
Changes in certain assets and liabilities:
Accounts receivable	(12.0)	(26.2)
Contract assets	(9.3)	3.2
Inventories	(44.8)	8.0
Prepaid expenses and other current assets	(0.1)	(8.7)
Rotable assets supporting long-term programs	(8.1)	1.8
Accounts payable		(2.3)
Accrued and other liabilities	(21.2)	0.9
Deferred revenue on long-term programs	8.2	0.7
Other	(17.9)	(4.1)
Net cash provided by (used in) operating activities - continuing operations	(38.9)	33.4
Net cash used in operating activities - discontinued operations	(0.4)	(14.2)
Net cash provided by (used in) operating activities	(39.3)	19.2
Cash flows used in investing activities:
Property, plant and equipment expenditures	(12.8)	(6.0)
Proceeds from asset disposals		7.3
Joint venture and other investments	(5.5)	(4.0)
Net cash used in investing activities	(18.3)	(2.7)
Cash flows provided by (used in) financing activities:
Short-term borrowings (repayments) on revolving credit facility, net	98.0	(5.0)
Repayment of long-term borrowings		(24.7)
Purchase of treasury stock	(50.1)	0.0
Stock compensation activity	2.1	(0.4)
Net cash provided by (used in) financing activities	50.0	(30.1)
Effect of exchange rate changes on cash	(0.1)	(0.2)
Decrease in cash and cash equivalents	(7.7)	(13.8)
Cash, cash equivalents, and restricted cash at beginning of period	58.9	60.2
Cash, cash equivalents, and restricted cash at end of period	$ 51.2	$ 46.4