Basis of Presentation and Significant Accounting Policies - Management Reimbursement Revenue (Details) - USD ($) $ in Millions	3 Months Ended
Jan. 31, 2018	Jan. 31, 2017
Segment Reporting Information [Line Items]
Parking facility management fee revenue	$ 93.4	$ 78.9
Business & Industry
Segment Reporting Information [Line Items]
Parking facility management fee revenue	63.0	57.8
Aviation
Segment Reporting Information [Line Items]
Parking facility management fee revenue	25.5	16.5
Healthcare
Segment Reporting Information [Line Items]
Parking facility management fee revenue	$ 4.9	$ 4.6

Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 45
-Section 45
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=68075638&loc=d3e60722-111653

Name:	us-gaap_ReimbursementRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration