XML 109 R97.htm IDEA: XBRL DOCUMENT v3.10.0.1

Operations by Business Segment and Geographic Area - Reportable Segments (Details)	12 Months Ended
	Dec. 31, 2017 segment
Operations by Business Segment and Geographic Area
Number of reportable segments	4

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration