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Debt Obligations (Senior Notes) (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended						3 Months Ended
	Jan. 31, 2013 ETP [Member]	Jan. 31, 2013 Sunoco Logistics [Member]	Mar. 31, 2013 3.6% Senior Notes due February 1, 2023 [Member]	Mar. 31, 2013 5.15% Senior Notes due February 1, 2043 [Member]	Mar. 31, 2013 3.45% Senior Notes due January 2023 [Member]	Mar. 31, 2013 4.95% Senior Notes due January 2043 [Member]	Mar. 31, 2013 Regency Senior Notes [Member]	Mar. 31, 2013 Due November 1, 2023 [Member] Regency Senior Notes [Member]
Debt Instrument [Line Items]
Senior Notes			$ 800	$ 450	$ 350	$ 350
Offering Price for Debt Redemption Percentage							104.688%
Estimated Closing Adjustments								600
Debt Instrument, Interest Rate, Stated Percentage			3.60%	5.15%	3.45%	4.95%	4.50%
Early Repayment of Senior Debt							162
Proceeds from Issuance of Senior Long-term Debt	$ 1,240	$ 691

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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