CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Cash flows from operating activities
Net income	$ 188.5	$ 181.6
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	91.3	82.4
Deferred income taxes	(2.0)	39.7
Share-based compensation expense	22.2	24.4
Provision for/(Recovery of) bad debt	0.6	(2.0)
Amortization of accumulated other comprehensive gain on interest rate swaps	0.0	(4.3)
Discount accretion on insurance claims	0.3	0.0
Loss/(Gain) on sale of assets	0.1	(0.8)
Change in fair value of contingent consideration	(45.6)	0.0
Income from unconsolidated affiliates	(3.0)	(1.8)
Distributions from unconsolidated affiliates	1.9	1.8
Changes in operating assets and liabilities
Trade accounts receivable and costs incurred in excess of amounts billed	(125.1)	(129.4)
Prepaid expenses and other current assets	(22.3)	(8.0)
Right-of-use assets	8.0	10.0
Other noncurrent assets	25.0	(6.6)
Trade accounts payable and other accrued liabilities	(45.9)	(178.0)
Long-term lease liabilities	(10.8)	(10.1)
Insurance claims	18.7	(18.8)
Income taxes payable, net	4.4	(10.3)
Other noncurrent liabilities	(2.2)	(66.5)
Total adjustments	(84.4)	(278.3)
Net cash provided by (used in) operating activities	104.1	(96.7)
Cash flows from investing activities
Additions to property, plant and equipment	(34.6)	(37.7)
Proceeds from sale of assets	2.0	4.1
Purchase of businesses, net of cash acquired	0.0	(56.7)
Investments in equity securities	(12.4)	(3.0)
Net cash used in investing activities	(45.0)	(93.3)
Cash flows from financing activities
Taxes withheld from issuance of share-based compensation awards, net	(11.3)	(10.7)
Repurchases of common stock	(27.1)	(74.5)
Dividends paid	(43.5)	(39.0)
Borrowings from debt	794.0	990.1
Repayment of borrowings from debt	(738.4)	(684.5)
Changes in book cash overdrafts	(10.5)	5.4
Financing of energy savings performance contracts	0.5	8.7
Repayment of finance lease obligations	(2.2)	(1.2)
Net cash (used in) provided by financing activities	(38.4)	194.2
Effect of exchange rate changes on cash and cash equivalents	3.9	(3.2)
Net increase in cash and cash equivalents	24.7	1.0
Cash and cash equivalents at beginning of year	73.0	62.8
Cash and cash equivalents at end of period	$ 97.7	$ 63.9