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Acquisitions - GCA Preliminary Purchase Price Allocation (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jan. 31, 2018 | Oct. 31, 2017
Business Acquisition [Line Items] |  |  |
Adjustment, Cash and cash equivalents |  | $ (2.4) |
Goodwill |  | 1,871.2 | $ 1,864.2
Adjustment, Income taxes payable |  | 8.2 |
GCA Holding Corp. |  |  |
Business Acquisition [Line Items] |  |  |
Cash and cash equivalents |  | 0.1 | 2.5
Trade accounts receivable | [1] | 118.1 | 118.1
Prepaid expenses and other current assets |  | 10.3 | 10.3
Property, plant and equipment |  | 41.4 | 41.4
Goodwill | [2] | 934.3 | 933.9
Adjustment, Goodwill |  | 0.4 |
Other assets |  | 4.2 | 4.2
Trade accounts payable |  | (9.1) | (9.1)
Insurance reserves |  | (35.5) | (35.5)
Income taxes payable |  | (8.3) | (16.5)
Accrued liabilities |  | (31.6) | (36.5)
Adjustment, Accrued liabilities |  | 4.9 |
Deferred income tax liability, net |  | (93.6) | (92.6)
Adjustment, Deferred income tax liability, net |  | (1.0) |
Other liabilities |  | (8.1) | (8.1)
Net assets acquired |  | 1,261.3 | 1,261.3
Acquired Receivables |  |  |
Trade accounts receivable, gross |  | 122.0 |
Estimated uncollectible trade accounts receivable |  | 3.9 |
GCA Holding Corp. | Customer relationships |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets | [3] | 330.0 | 340.0
Adjustment, Intangible assets |  | $ (10.0) |
Acquired Intangible Assets |  |  |
Amortization period for acquired intangible assets |  | 15 years |
GCA Holding Corp. | Trade names |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets | [3] | $ 9.0 | $ 9.0
Acquired Intangible Assets |  |  |
Amortization period for acquired intangible assets |  | 2 years |
[1] | The gross amount of trade accounts receivable was $122.0 million, of which $3.9 million is expected to be uncollectible.
[2] | Goodwill is largely attributable to value we expect to obtain from long-term business growth, the established workforce, and buyer-specific synergies. This goodwill is not deductible for income tax purposes.
[3] | The amortization periods for the acquired intangible assets are 15 years for customer relationships and 2 years for trade names.

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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