Commitments and Contingencies (Contingencies Related to Acquisition) (Details)	3 Months Ended	9 Months Ended
	Dec. 31, 2013	Sep. 30, 2013 LIG Pipeline [Member]
Business Acquisition [Line Items]
Business Acquisition, Name of Acquired Entity		LIG Pipeline Company
Business Acquisition, Date of Acquisition Agreement	Oct. 21, 2013	Apr. 01, 2004