CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Cash flows from operating activities
Net income	$ 88.4	$ 90.4
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	52.9	61.1
Deferred income taxes	(2.6)	3.3
Share-based compensation expense	16.6	14.6
Provision for bad debt	2.2	0.0
Discount accretion on insurance claims	0.3	0.2
(Gain)/Loss on sale of assets	(0.2)	0.2
Change in fair value of contingent consideration	0.0	(8.4)
Income from unconsolidated affiliates	(3.0)	(1.7)
Distributions from unconsolidated affiliates	1.8	1.8
Changes in operating assets and liabilities
Trade accounts receivable and costs incurred in excess of amounts billed	36.4	(93.5)
Prepaid expenses and other current assets	(34.4)	(35.9)
Right-of-use assets	5.0	3.5
Other noncurrent assets	(30.1)	22.9
Trade accounts payable and other accrued liabilities	(57.8)	(118.1)
Long-term lease liabilities	(1.8)	(6.5)
Insurance claims	49.5	25.4
Income taxes payable, net	(5.4)	(4.0)
Other noncurrent liabilities	(0.9)	(0.3)
Total adjustments	28.4	(135.4)
Net cash provided by (used in) operating activities	116.9	(45.0)
Cash flows from investing activities
Additions to property, plant and equipment	(29.1)	(23.8)
Proceeds from sale of assets	0.6	1.6
Net cash used in investing activities	(28.6)	(22.2)
Cash flows from financing activities
Taxes withheld from issuance of share-based compensation awards, net	(8.7)	(12.0)
Repurchases of common stock, including excise taxes	(23.8)	0.0
Dividends paid	(28.3)	(29.0)
Borrowings from debt	556.0	575.5
Repayment of borrowings from debt	(597.3)	(459.8)
Changes in book cash overdrafts	6.0	(11.0)
Financing of energy savings performance contracts	0.0	0.5
Repayment of finance lease obligations	(2.0)	(1.5)
Net cash (used in) provided by financing activities	(98.0)	62.8
Effect of exchange rate changes on cash and cash equivalents	0.8	2.6
Net decrease in cash and cash equivalents	(8.8)	(1.8)
Cash and cash equivalents at beginning of year	69.5	73.0
Cash and cash equivalents at end of period	$ 60.7	$ 71.2