Commitments and Contingencies - Schedule of Contingent Liabilities (Detail) - USD ($) $ in Millions	Oct. 31, 2020	Oct. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Performance, bid and specialty bonds	$ 328.6	$ 229.9
Open standby letters of credit	11.0	14.3
Total	$ 339.6	$ 244.2

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant