Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016
Cash flows from operating activities
Net income (loss)	$ (25.5)	$ 18.4
Net loss from discontinued operations	73.2	2.0
Income from continuing operations	47.7	20.4
Adjustments to reconcile income from continuing operations to net cash provided by operating activities of continuing operations
Depreciation and amortization	28.5	29.2
Impairment recovery	(17.4)	0.0
Deferred income taxes	9.7	8.0
Share-based compensation expense	7.3	7.4
Provision for bad debt	2.0	9.8
Discount accretion on insurance claims	0.1	0.1
Gain on sale of assets	(0.1)	(0.1)
Income from unconsolidated affiliates, net	(2.3)	(3.3)
Distributions from unconsolidated affiliates	0.8	4.5
Changes in operating assets and liabilities, net of effects of acquisitions
Trade accounts receivable	(47.3)	12.4
Prepaid expenses and other current assets	(2.7)	3.4
Other noncurrent assets	(6.4)	(0.4)
Trade accounts payable and other accrued liabilities	1.1	(10.7)
Insurance claims	15.6	7.3
Income taxes payable	5.1	(11.6)
Other noncurrent liabilities	8.4	2.6
Total adjustments	2.4	58.6
Net cash provided by operating activities of continuing operations	50.1	79.0
Net cash used in operating activities of discontinued operations	(2.0)	(22.5)
Net cash provided by operating activities	48.1	56.5
Cash flows from investing activities
Additions to property, plant and equipment	(27.8)	(15.7)
Proceeds from sale of assets	0.4	0.4
Purchase of businesses, net of cash acquired	(18.6)	(81.0)
Proceeds from redemption of auction rate security	0.0	5.0
Net cash used in investing activities of continuing operations	(46.0)	(91.3)
Net cash used in investing activities of discontinued operations	0.0	(3.1)
Net cash used in investing activities	(46.0)	(94.4)
Cash flows from financing activities
Proceeds from issuance of share-based compensation awards, net of taxes withheld	0.8	2.6
Incremental tax benefit from share-based compensation awards	0.0	0.5
Repurchases of common stock	(7.9)	(21.5)
Dividends paid	(18.9)	(18.5)
Deferred financing costs paid	0.0	(0.1)
Borrowings from line of credit	441.9	536.6
Repayment of borrowings from line of credit	(432.3)	(485.7)
Financing of energy savings performance contracts	2.6	10.5
Changes in book cash overdrafts	17.2	4.8
Payment of contingent consideration	(3.8)	0.0
Repayment of capital lease obligations	(0.1)	(0.6)
Net cash (used in) provided by financing activities	(0.5)	28.6
Effect of exchange rate changes on cash and cash equivalents	0.6	(0.5)
Net increase (decrease) in cash and cash equivalents	2.2	(9.8)
Cash and cash equivalents at beginning of year	53.5	55.5
Cash and cash equivalents at end of period	$ 55.7	$ 45.7