Related Party Transactions Related Party balances on condensed consolidated balance sheets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	$ 94		$ 82
Accounts Payable, Related Parties	24		33
ETE [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	16		14
Accounts Payable, Related Parties	7		2
Regency [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	10		10
Accounts Payable, Related Parties	2		0
PES Joint Venture [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	60	[1]	0	[1]
Accounts Payable, Related Parties	13	[1]	0	[1]
Enterprise [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	0	[2]	55	[2]
Accounts Payable, Related Parties	0	[2]	30	[2]
Other Related Parties [Member]
Related Party Transaction [Line Items]
Accounts Receivable, Related Parties	8		3
Accounts Payable, Related Parties	$ 2		$ 1

[1] PES became a related party in October 2012 as a result of the Sunoco Merger. See Note 3.

[2] In January 2012, Enterprise sold a significant portion of its ownership in ETE's common units. Subsequent to that transaction, Enterprise owns less than 5% of ETE's outstanding common units and is no longer considered a related party.