Mergers and Other Transactions (Narrative) (Details) (USD $)	9 Months Ended	12 Months Ended		3 Months Ended			4 Months Ended				4 Months Ended	12 Months Ended					1 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Mar. 25, 2012	Mar. 25, 2012 ETE Merger [Member]	Mar. 25, 2012 Citrus Merger [Member]	Dec. 31, 2013 Citrus Merger [Member]	Apr. 30, 2013 ETE [Member] Holdco Transaction [Member]	Dec. 31, 2013 Regency [Member]	Feb. 19, 2014 ETP [Member]	Dec. 31, 2013 ETP [Member]	Apr. 30, 2013 ETP [Member] Holdco Transaction [Member]	Dec. 31, 2013 ETP [Member] Holdco Transaction [Member]	Jun. 24, 2013 7.60% Senior Notes, due February 1, 2024 [Member]	Jun. 24, 2013 8.25% Senior Notes, due November 14, 2029 [Member]	Dec. 31, 2013 Regency 4.50% Senior Notes Due 2023 [Member]	Dec. 31, 2013 Class F Units [Member] Regency [Member]	Feb. 28, 2014 Trunkline LNG Transaction [Member]
Debt Instrument, Interest Rate, Stated Percentage													7.60%	8.25%	4.50%
Number of common units of a subsidiary partnership that are held by a less than wholly-owned subsidiary of the Parent.								31,400,000								6,300,000
Number of common units of a subsidiary partnership that are held by a wholly-owned subsidiary of the Parent.										2,200,000
Guarantor Obligations, Current Carrying Value															$ 600,000,000
Notes Payable, Related Parties, Noncurrent									1,090,000,000
Partners' Capital Account, Units, Redeemed																	18,700,000
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest							60.00%				40.00%	100.00%
Percentage owned by equity investment						50.00%
Merger amount, in cash					1,900,000,000
Merger related expenses	48,000,000
Net gain due to curtailment of postretirement employee benefit plans	11,000,000
Intangible asset, estimated useful life		17 years 6 months
Business Acquisition Units Acquired				56,982,160	2,300,000
Business Combination, Consideration Transferred				3,010,000,000
Business Combination, Cost of Acquired Entity, Purchase Price			$ 3,961,000,000		$ 2,000,000,000