Note 9 - Non-Wholly Owned Entities (Details) - Equity Method Investments (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 83		$ 97
Income from Equity Method Investments	3		3
Triton [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	67		72
Income from Equity Method Investments	2		2
Horizon Pipeline [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	15		16
Income from Equity Method Investments	1		1
Other Equity Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 1	[1]	$ 9	[1]

[1] Includes our investment in Sawgrass Storage. In December 2013, the joint venture decided to terminate the development of the Sawgrass storage facility and reduced the carrying amount of the joint venture's long-lived assets to fair value.