Segment Information - Narrative (Details) $ in Millions	3 Months Ended
Jan. 31, 2018 segment	Jan. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of segments \| segment	4
Advanced payments from advanced royalty payment arrangements \| $		$ 439
Term of arrangements		15 years

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration