Investments in Affiliates Narrative (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2014	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
AmeriGas common units sold by ETP	9.2
Proceeds from ETP's sale of AmeriGas common units		$ 381	$ 0
AmeriGas [Member]
Schedule of Equity Method Investments [Line Items]
Investment Owned, Balance, Shares		12.9
Interest ownership		14.00%
Citrus [Member]
Schedule of Equity Method Investments [Line Items]
Interest ownership		50.00%
FGT [Member]
Schedule of Equity Method Investments [Line Items]
Percentage Ownership Operating Facility		100.00%
Fayetteville Express Pipeline, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Interest ownership		50.00%
RIGS Haynesville Partnership Co. [Member]
Schedule of Equity Method Investments [Line Items]
Interest ownership		49.99%
Midcontinent Express Pipeline, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Interest ownership		50.00%