Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	May 31, 2025
Cash flows used in operating activities:
Net income	$ 34.4	$ 18.0
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	13.8	13.5
Amortization of financing costs	0.7	0.7
Stock-based compensation expense	5.3	5.0
Earnings from joint ventures	(3.0)	(2.3)
Provision for credit losses	0.6	0.2
Gain on sale of business	(1.0)
Changes in certain assets and liabilities:
Accounts receivable	(8.5)	(23.7)
Contract assets	(6.4)	(24.5)
Inventories	(51.8)	(14.8)
Prepaid expenses and other current assets	3.5	(8.5)
Rotable assets supporting long-term programs	(3.5)	(6.5)
Accounts payable	10.0	19.4
Accrued and other liabilities	(26.7)	(10.9)
Other	(12.3)	15.8
Net cash used in operating activities	(44.9)	(18.6)
Cash flows used in investing activities:
Property, plant, and equipment expenditures	(8.7)	(7.9)
Acquisitions, net of cash acquired	(11.9)	2.9
Other	(3.2)	(0.3)
Net cash used in investing activities	(23.8)	(5.3)
Cash flows provided by (used in) financing activities:
Proceeds from long-term borrowings	153.0
Short-term borrowings (repayments), net	(97.0)	(5.0)
Financing costs	(2.5)
Stock compensation activity	(2.4)	(4.1)
Net cash provided by (used in) financing activities	51.1	(9.1)
Decrease in cash, cash equivalents, and restricted cash	(17.6)	(33.0)
Cash, cash equivalents, and restricted cash at beginning of period	109.2	96.1	$ 96.1
Cash, cash equivalents, and restricted cash at end of period	$ 91.6	$ 63.1	$ 109.2