Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023
Cash flows provided by (used in) operating activities:
Net income	$ 37.2	$ 67.0
Less: Income from discontinued operations		(0.4)
Income from continuing operations	37.2	66.6
Adjustments to reconcile income from continuing operations to net cash provided by (used in) operating activities:
Depreciation and amortization	25.9	20.2
Stock-based compensation	11.5	10.4
Pension settlement charge	26.7
Loss from joint ventures	0.5	3.0
Provision for credit losses	0.5	1.8
Deferred taxes	(4.8)	(5.8)
Changes in certain assets and liabilities:
Accounts receivable	(17.3)	(26.4)
Contract assets	0.5	(18.5)
Inventories	(97.3)	(20.2)
Rotable assets and equipment on or available for short-term lease	(23.8)	1.9
Prepaid expenses and other current assets	(11.3)	(8.8)
Rotable assets supporting long-term programs	(6.9)	(13.2)
Accounts payable	73.7	2.8
Accrued and other liabilities	19.8	(15.9)
Deferred revenue on long-term programs	(13.6)	2.2
Other	(2.0)	(21.6)
Net cash provided by (used in) operating activities - continuing operations	19.3	(21.5)
Net cash used in operating activities - discontinued operations	(0.2)	(0.4)
Net cash provided by (used in) operating activities	19.1	(21.9)
Cash flows used in investing activities:
Property, plant, and equipment expenditures	(22.2)	(22.5)
Other	(4.6)	(4.8)
Net cash used in investing activities - continuing operations	(26.8)	(27.3)
Cash flows provided by financing activities:
Short-term borrowings on Revolving Credit Facility, net	5.0	88.0
Purchase of treasury stock	(5.1)	(50.1)
Financing costs	(0.8)	(1.9)
Stock compensation activity	10.4	8.5
Net cash provided by financing activities - continuing operations	9.5	44.5
Effect of exchange rate changes on cash		(0.1)
Increase (Decrease) in cash, cash equivalents, and restricted cash	1.8	(4.8)
Cash, cash equivalents, and restricted cash at beginning of period	81.8	58.9
Cash, cash equivalents, and restricted cash at end of period	$ 83.6	$ 54.1