CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2023
Cash flows from operating activities
Net income	$ 162.4	$ 81.4	$ 251.3
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	105.6	106.6	120.7
Deferred income taxes	(21.9)	(24.7)	(4.9)
Share-based compensation expense	38.0	30.0	30.5
Provision for bad debt	6.7	8.8	3.0
Discount accretion on insurance claims	0.7	0.6	0.4
Impairment of assets	4.0	0.0	0.0
Loss on sale of assets	(0.2)	(0.6)	(0.1)
Income from unconsolidated affiliates	(4.6)	(6.5)	(3.9)
Distributions from unconsolidated affiliates	5.5	4.6	1.9
Change in fair value of contingent consideration	(1.6)	95.7	(45.6)
Changes in operating assets and liabilities, net of effects of acquisitions
Trade accounts receivable and costs incurred in excess of amounts billed	(109.8)	(32.6)	(152.7)
Prepaid expenses and other current assets	23.8	(40.4)	(7.4)
Right-of-use assets	5.7	12.7	1.8
Other noncurrent assets	(17.4)	(34.0)	33.8
Trade accounts payable and other accrued liabilities	53.1	(10.9)	(3.8)
Long-term lease liabilities	(8.3)	(7.3)	(5.7)
Insurance claims	40.0	54.3	5.0
Income taxes payable	(9.2)	(6.8)	15.1
Other noncurrent liabilities	(38.1)	(4.2)	3.8
Total adjustments	72.0	145.3	(8.0)
Net cash provided by operating activities	234.4	226.7	243.3
Cash flows from investing activities
Additions to property, plant and equipment	(79.3)	(59.4)	(52.6)
Proceeds from sale of assets	0.4	1.8	2.9
Purchase of businesses, net of cash acquired, and equity securities	(36.7)	(114.3)	(12.4)
Net cash used in investing activities	(115.6)	(171.9)	(62.1)
Cash flows from financing activities
Taxes withheld from issuance of share-based compensation awards, net	(7.4)	(7.0)	(10.5)
Repurchases of common stock, including excise taxes	(122.2)	(56.1)	(138.1)
Dividends paid	(65.6)	(56.5)	(57.5)
Deferred financing costs paid	(8.0)	0.0	0.0
Borrowings from debt	1,846.8	1,334.0	1,178.5
Repayment of borrowings from debt	(1,613.0)	(1,312.5)	(1,136.0)
Changes in book cash overdrafts	(47.2)	40.7	(20.3)
Financing of energy savings performance contracts	0.0	0.0	0.5
Repayment of finance lease obligations	(4.5)	(4.2)	(3.0)
Cash paid to settle the contingent consideration liability	(59.0)	0.0	0.0
Net cash used in financing activities	(80.2)	(61.5)	(186.3)
Effect of exchange rate changes on cash and cash equivalents	0.9	1.8	1.6
Net increase (decrease) in cash and cash equivalents	39.5	(4.9)	(3.5)
Cash and cash equivalents at beginning of year	64.6	69.5	73.0
Cash and cash equivalents at end of year	104.1	64.6	69.5
Supplemental cash flow information
Income tax payments, net	88.2	83.2	69.1
Interest paid on credit facility	$ 99.8	$ 98.5	$ 89.4