Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details Textual)

v2.4.0.6
Subsequent Events (Details Textual) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Crown Imports [Member]
 
Subsequent Event [Line Items]  
Remaining equity interest percentage 50.00%
Business acquisition, cost of acquired entity, purchase price $ 1,850
Mark West Assets [Member]
 
Subsequent Event [Line Items]  
Business acquisition, cost of acquired entity, purchase price $ 160