v2.4.0.6
Segment Information (Narrative) (Details)
3 Months Ended
Mar. 31, 2012
Segment Information [Abstract]
Number of segments
2
X
- Details
Name:
us-gaap_SegmentReportingAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration
X
- Definition
Number of segments
+ References
No definition available.
+ Details
Name:
wlk_NumberOfSegments
Namespace Prefix:
wlk_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
duration